ValueAnimator.java revision 0a815bb94fa2aad016a10fe23633efc5682d2a7c
1a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase/* 2a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Copyright (C) 2010 The Android Open Source Project 3a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 4a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Licensed under the Apache License, Version 2.0 (the "License"); 5a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * you may not use this file except in compliance with the License. 6a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * You may obtain a copy of the License at 7a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 8a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * http://www.apache.org/licenses/LICENSE-2.0 9a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 10a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Unless required by applicable law or agreed to in writing, software 11a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * distributed under the License is distributed on an "AS IS" BASIS, 12a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * See the License for the specific language governing permissions and 14a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * limitations under the License. 15a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 16a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 17a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haasepackage android.animation; 18a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 19c615c6fc9caca76cd96998f86e1f1e6393aeadbbTor Norbyeimport android.annotation.CallSuper; 207764b920f21e0b9250122ff26533d5dac98df6b3George Mountimport android.annotation.IntDef; 210a815bb94fa2aad016a10fe23633efc5682d2a7cTeng-Hui Zhuimport android.annotation.TestApi; 22a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport android.os.Looper; 2318772ea228f3d292629c4f0b5f6392d047e0530dRomain Guyimport android.os.Trace; 242970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haaseimport android.util.AndroidRuntimeException; 25c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brownimport android.util.Log; 26a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport android.view.animation.AccelerateDecelerateInterpolator; 27a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport android.view.animation.AnimationUtils; 2827c1d4debb3848f5accd5673fffeeacad3e61648Chet Haaseimport android.view.animation.LinearInterpolator; 29a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 307764b920f21e0b9250122ff26533d5dac98df6b3George Mountimport java.lang.annotation.Retention; 317764b920f21e0b9250122ff26533d5dac98df6b3George Mountimport java.lang.annotation.RetentionPolicy; 32a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport java.util.ArrayList; 33a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport java.util.HashMap; 34a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 35a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase/** 36a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This class provides a simple timing engine for running animations 37a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * which calculate animated values and set them on target objects. 38a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 39a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>There is a single timing pulse that all animations use. It runs in a 40a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * custom handler to ensure that property changes happen on the UI thread.</p> 41a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 42a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>By default, ValueAnimator uses non-linear time interpolation, via the 43a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link AccelerateDecelerateInterpolator} class, which accelerates into and decelerates 44a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * out of an animation. This behavior can be changed by calling 45e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase * {@link ValueAnimator#setInterpolator(TimeInterpolator)}.</p> 463aef8e1d1b2f0b87d470bcccf37ba4ebb6560c45Joe Fernandez * 47d430753cba09acb07af8b313286f247c78a41a32Chet Haase * <p>Animators can be created from either code or resource files. Here is an example 48d430753cba09acb07af8b313286f247c78a41a32Chet Haase * of a ValueAnimator resource file:</p> 49d430753cba09acb07af8b313286f247c78a41a32Chet Haase * 50d430753cba09acb07af8b313286f247c78a41a32Chet Haase * {@sample development/samples/ApiDemos/res/anim/animator.xml ValueAnimatorResources} 51d430753cba09acb07af8b313286f247c78a41a32Chet Haase * 52d430753cba09acb07af8b313286f247c78a41a32Chet Haase * <p>It is also possible to use a combination of {@link PropertyValuesHolder} and 53d430753cba09acb07af8b313286f247c78a41a32Chet Haase * {@link Keyframe} resource tags to create a multi-step animation. 54d430753cba09acb07af8b313286f247c78a41a32Chet Haase * Note that you can specify explicit fractional values (from 0 to 1) for 55d430753cba09acb07af8b313286f247c78a41a32Chet Haase * each keyframe to determine when, in the overall duration, the animation should arrive at that 56d430753cba09acb07af8b313286f247c78a41a32Chet Haase * value. Alternatively, you can leave the fractions off and the keyframes will be equally 57d430753cba09acb07af8b313286f247c78a41a32Chet Haase * distributed within the total duration:</p> 58d430753cba09acb07af8b313286f247c78a41a32Chet Haase * 59d430753cba09acb07af8b313286f247c78a41a32Chet Haase * {@sample development/samples/ApiDemos/res/anim/value_animator_pvh_kf.xml 60d430753cba09acb07af8b313286f247c78a41a32Chet Haase * ValueAnimatorKeyframeResources} 61d430753cba09acb07af8b313286f247c78a41a32Chet Haase * 623aef8e1d1b2f0b87d470bcccf37ba4ebb6560c45Joe Fernandez * <div class="special reference"> 633aef8e1d1b2f0b87d470bcccf37ba4ebb6560c45Joe Fernandez * <h3>Developer Guides</h3> 643aef8e1d1b2f0b87d470bcccf37ba4ebb6560c45Joe Fernandez * <p>For more information about animating with {@code ValueAnimator}, read the 653aef8e1d1b2f0b87d470bcccf37ba4ebb6560c45Joe Fernandez * <a href="{@docRoot}guide/topics/graphics/prop-animation.html#value-animator">Property 663aef8e1d1b2f0b87d470bcccf37ba4ebb6560c45Joe Fernandez * Animation</a> developer guide.</p> 673aef8e1d1b2f0b87d470bcccf37ba4ebb6560c45Joe Fernandez * </div> 68a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 6918772ea228f3d292629c4f0b5f6392d047e0530dRomain Guy@SuppressWarnings("unchecked") 703618d30f8ab6018025b11869676b309c3b4961cfDoris Liupublic class ValueAnimator extends Animator implements AnimationHandler.AnimationFrameCallback { 71c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown private static final String TAG = "ValueAnimator"; 72c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown private static final boolean DEBUG = false; 73a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 74a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 75a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Internal constants 76a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 77d21a9fe2d9a6cfe966fc7df3a8c37c172d7ac302Chet Haase private static float sDurationScale = 1.0f; 78a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 79a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 80a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Internal variables 81a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * NOTE: This object implements the clone() method, making a deep copy of any referenced 82a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * objects. As other non-trivial fields are added to this class, make sure to add logic 83a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * to clone() to make deep copies of them. 84a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 85a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 86c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown /** 87c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * The first time that the animation's animateFrame() method is called. This time is used to 88c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * determine elapsed time (and therefore the elapsed fraction) in subsequent calls 89c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * to animateFrame(). 90c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * 91c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * Whenever mStartTime is set, you must also update mStartTimeCommitted. 92c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown */ 93051d35e41f7b21cd8a1608bdce10cf70952c6be4Chet Haase long mStartTime; 94a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 95a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 96c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * When true, the start time has been firmly committed as a chosen reference point in 97c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * time by which the progress of the animation will be evaluated. When false, the 98c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * start time may be updated when the first animation frame is committed so as 99c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * to compensate for jank that may have occurred between when the start time was 100c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * initialized and when the frame was actually drawn. 101c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * 102c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * This flag is generally set to false during the first frame of the animation 103c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * when the animation playing state transitions from STOPPED to RUNNING or 104c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * resumes after having been paused. This flag is set to true when the start time 105c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * is firmly committed and should not be further compensated for jank. 106c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown */ 107c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown boolean mStartTimeCommitted; 108c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown 109c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown /** 110a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Set when setCurrentPlayTime() is called. If negative, animation is not currently seeked 111a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * to a value. 112a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1130d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase float mSeekFraction = -1; 114a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1158aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase /** 1168aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase * Set on the next frame after pause() is called, used to calculate a new startTime 1178aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase * or delayStartTime which allows the animator to continue from the point at which 1188aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase * it was paused. If negative, has not yet been set. 1198aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase */ 1208aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase private long mPauseTime; 1218aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase 1228aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase /** 1238aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase * Set when an animator is resumed. This triggers logic in the next frame which 1248aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase * actually resumes the animator. 1258aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase */ 1268aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase private boolean mResumed = false; 1278aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase 128a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The time interpolator to be used if none is set on the animation 129e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase private static final TimeInterpolator sDefaultInterpolator = 130e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase new AccelerateDecelerateInterpolator(); 131a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 132a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 133f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase * Flag to indicate whether this animator is playing in reverse mode, specifically 134f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase * by being started or interrupted by a call to reverse(). This flag is different than 135f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase * mPlayingBackwards, which indicates merely whether the current iteration of the 136f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase * animator is playing in reverse. It is used in corner cases to determine proper end 137f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase * behavior. 138f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase */ 139f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase private boolean mReversing; 140f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase 141f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase /** 142fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * Tracks the overall fraction of the animation, ranging from 0 to mRepeatCount + 1 143a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 144fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu private float mOverallFraction = 0f; 145a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 146a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 147a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase * Tracks current elapsed/eased fraction, for querying in getAnimatedFraction(). 148fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * This is calculated by interpolating the fraction (range: [0, 1]) in the current iteration. 149a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase */ 150a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase private float mCurrentFraction = 0f; 151a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase 152a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase /** 1533618d30f8ab6018025b11869676b309c3b4961cfDoris Liu * Tracks the time (in milliseconds) when the last frame arrived. 154a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1553618d30f8ab6018025b11869676b309c3b4961cfDoris Liu private long mLastFrameTime = 0; 156a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 157a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 158b8f574a165bf6ec5b316734b367ac274ded4809bChet Haase * Additional playing state to indicate whether an animator has been start()'d. There is 159b8f574a165bf6ec5b316734b367ac274ded4809bChet Haase * some lag between a call to start() and the first animation frame. We should still note 160b8f574a165bf6ec5b316734b367ac274ded4809bChet Haase * that the animation has been started, even if it's first animation frame has not yet 161b8f574a165bf6ec5b316734b367ac274ded4809bChet Haase * happened, and reflect that state in isRunning(). 162b8f574a165bf6ec5b316734b367ac274ded4809bChet Haase * Note that delayed animations are different: they are not started until their first 163b8f574a165bf6ec5b316734b367ac274ded4809bChet Haase * animation frame, which occurs after their delay elapses. 164b8f574a165bf6ec5b316734b367ac274ded4809bChet Haase */ 1658b699792b677bd4dd8442b32641ac09d48fdd79cChet Haase private boolean mRunning = false; 1668b699792b677bd4dd8442b32641ac09d48fdd79cChet Haase 1678b699792b677bd4dd8442b32641ac09d48fdd79cChet Haase /** 1688b699792b677bd4dd8442b32641ac09d48fdd79cChet Haase * Additional playing state to indicate whether an animator has been start()'d, whether or 1698b699792b677bd4dd8442b32641ac09d48fdd79cChet Haase * not there is a nonzero startDelay. 1708b699792b677bd4dd8442b32641ac09d48fdd79cChet Haase */ 171b8f574a165bf6ec5b316734b367ac274ded4809bChet Haase private boolean mStarted = false; 172b8f574a165bf6ec5b316734b367ac274ded4809bChet Haase 173b8f574a165bf6ec5b316734b367ac274ded4809bChet Haase /** 1748aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase * Tracks whether we've notified listeners of the onAnimationStart() event. This can be 17517cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase * complex to keep track of since we notify listeners at different times depending on 17617cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase * startDelay and whether start() was called before end(). 17717cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase */ 17817cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase private boolean mStartListenersCalled = false; 17917cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase 18017cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase /** 181a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Flag that denotes whether the animation is set up and ready to go. Used to 182a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * set up animation that has not yet been started. 183a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 184a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase boolean mInitialized = false; 185a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1863dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu /** 1873dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu * Flag that tracks whether animation has been requested to end. 1883dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu */ 1893dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu private boolean mAnimationEndRequested = false; 1903dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu 191a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // 192a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Backing variables 193a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // 194a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 195a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // How long the animation should last in ms 196fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu private long mDuration = 300; 197a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 198fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu // The amount of time in ms to delay starting the animation after start() is called. Note 199fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu // that this start delay is unscaled. When there is a duration scale set on the animator, the 200fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu // scaling factor will be applied to this delay. 201fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu private long mStartDelay = 0; 202a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 203a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The number of times the animation will repeat. The default is 0, which means the animation 204a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // will play only once 205a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private int mRepeatCount = 0; 206a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 207a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 208a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The type of repetition that will occur when repeatMode is nonzero. RESTART means the 209a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation will start from the beginning on every new cycle. REVERSE means the animation 210a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * will reverse directions on each iteration. 211a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 212a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private int mRepeatMode = RESTART; 213a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 214a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 215a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The time interpolator to be used. The elapsed fraction of the animation will be passed 216a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * through this interpolator to calculate the interpolated fraction, which is then used to 217a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * calculate the animated values. 218a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 219e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase private TimeInterpolator mInterpolator = sDefaultInterpolator; 220a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 221a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 222a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The set of listeners to be sent events through the life of an animation. 223a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 224d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck ArrayList<AnimatorUpdateListener> mUpdateListeners = null; 225a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 226a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 227a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The property/value sets being animated. 228a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 229a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder[] mValues; 230a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 231a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 232a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * A hashmap of the PropertyValuesHolder objects. This map is used to lookup animated values 233a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * by property name during calls to getAnimatedValue(String). 234a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 235a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase HashMap<String, PropertyValuesHolder> mValuesMap; 236a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 237a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 238a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Public constants 239a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 240a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 2417764b920f21e0b9250122ff26533d5dac98df6b3George Mount /** @hide */ 2427764b920f21e0b9250122ff26533d5dac98df6b3George Mount @IntDef({RESTART, REVERSE}) 2437764b920f21e0b9250122ff26533d5dac98df6b3George Mount @Retention(RetentionPolicy.SOURCE) 2447764b920f21e0b9250122ff26533d5dac98df6b3George Mount public @interface RepeatMode {} 2457764b920f21e0b9250122ff26533d5dac98df6b3George Mount 246a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 247a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * When the animation reaches the end and <code>repeatCount</code> is INFINITE 248a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * or a positive value, the animation restarts from the beginning. 249a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 250a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static final int RESTART = 1; 251a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 252a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * When the animation reaches the end and <code>repeatCount</code> is INFINITE 253a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * or a positive value, the animation reverses direction on every iteration. 254a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 255a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static final int REVERSE = 2; 256a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 257a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This value used used with the {@link #setRepeatCount(int)} property to repeat 258a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the animation indefinitely. 259a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 260a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static final int INFINITE = -1; 261a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 262c38fa1f63674971f9ac6ced1a449fb81026b62f7Chet Haase /** 263c38fa1f63674971f9ac6ced1a449fb81026b62f7Chet Haase * @hide 264c38fa1f63674971f9ac6ced1a449fb81026b62f7Chet Haase */ 2650a815bb94fa2aad016a10fe23633efc5682d2a7cTeng-Hui Zhu @TestApi 266c38fa1f63674971f9ac6ced1a449fb81026b62f7Chet Haase public static void setDurationScale(float durationScale) { 267c38fa1f63674971f9ac6ced1a449fb81026b62f7Chet Haase sDurationScale = durationScale; 268c38fa1f63674971f9ac6ced1a449fb81026b62f7Chet Haase } 269c38fa1f63674971f9ac6ced1a449fb81026b62f7Chet Haase 270a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 271ff7e6ef4f18ff94a9836492ff3ccd1ba7f6804f3Jeff Brown * @hide 272ff7e6ef4f18ff94a9836492ff3ccd1ba7f6804f3Jeff Brown */ 2730a815bb94fa2aad016a10fe23633efc5682d2a7cTeng-Hui Zhu @TestApi 274ff7e6ef4f18ff94a9836492ff3ccd1ba7f6804f3Jeff Brown public static float getDurationScale() { 275ff7e6ef4f18ff94a9836492ff3ccd1ba7f6804f3Jeff Brown return sDurationScale; 276ff7e6ef4f18ff94a9836492ff3ccd1ba7f6804f3Jeff Brown } 277ff7e6ef4f18ff94a9836492ff3ccd1ba7f6804f3Jeff Brown 278ff7e6ef4f18ff94a9836492ff3ccd1ba7f6804f3Jeff Brown /** 279a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Creates a new ValueAnimator object. This default constructor is primarily for 2802794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * use internally; the factory methods which take parameters are more generally 281a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * useful. 282a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 283a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public ValueAnimator() { 284a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 285a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 286a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 2872794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Constructs and returns a ValueAnimator that animates between int values. A single 2882794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 2892794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 2902794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 2912794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 2922794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 293a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 2942794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 2952794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return A ValueAnimator object that is set up to animate between the given values. 29641f041d9986f8a5d45b6cb0b86e881c81a412168Chet Haase */ 2972794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public static ValueAnimator ofInt(int... values) { 2982794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ValueAnimator anim = new ValueAnimator(); 2992794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setIntValues(values); 3002794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return anim; 3012794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3022794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 3032794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 3041ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount * Constructs and returns a ValueAnimator that animates between color values. A single 3051ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount * value implies that that value is the one being animated to. However, this is not typically 3061ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount * useful in a ValueAnimator object because there is no way for the object to determine the 3071ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount * starting value for the animation (unlike ObjectAnimator, which can derive that value 3081ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount * from the target object and property being animated). Therefore, there should typically 3091ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount * be two or more values. 3101ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount * 3111ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount * @param values A set of values that the animation will animate between over time. 3121ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount * @return A ValueAnimator object that is set up to animate between the given values. 3131ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount */ 3141ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount public static ValueAnimator ofArgb(int... values) { 3151ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount ValueAnimator anim = new ValueAnimator(); 3161ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount anim.setIntValues(values); 3171ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount anim.setEvaluator(ArgbEvaluator.getInstance()); 3181ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount return anim; 3191ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount } 3201ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount 3211ffb280a7d2c70cc16d709c685f5d31fdb86b5e4George Mount /** 3222794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Constructs and returns a ValueAnimator that animates between float values. A single 3232794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 3242794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 3252794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 3262794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 3272794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 3282794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3292794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 3302794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return A ValueAnimator object that is set up to animate between the given values. 3312794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 3322794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public static ValueAnimator ofFloat(float... values) { 3332794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ValueAnimator anim = new ValueAnimator(); 3342794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setFloatValues(values); 3352794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return anim; 3362794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3372794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 3382794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 3392794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Constructs and returns a ValueAnimator that animates between the values 3402794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * specified in the PropertyValuesHolder objects. 3412794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3422794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of PropertyValuesHolder objects whose values will be animated 3432794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * between over time. 3442794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return A ValueAnimator object that is set up to animate between the given values. 3452794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 3462794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public static ValueAnimator ofPropertyValuesHolder(PropertyValuesHolder... values) { 3472794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ValueAnimator anim = new ValueAnimator(); 3482794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setValues(values); 3492794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return anim; 3502794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3512794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 3522794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Constructs and returns a ValueAnimator that animates between Object values. A single 3532794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 3542794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 3552794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 3562794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 3572794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 3582794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 359fa21bdfd5a8a5da3ec0530f7cc884994f92dc597Chet Haase * <p><strong>Note:</strong> The Object values are stored as references to the original 360fa21bdfd5a8a5da3ec0530f7cc884994f92dc597Chet Haase * objects, which means that changes to those objects after this method is called will 361fa21bdfd5a8a5da3ec0530f7cc884994f92dc597Chet Haase * affect the values on the animator. If the objects will be mutated externally after 362fa21bdfd5a8a5da3ec0530f7cc884994f92dc597Chet Haase * this method is called, callers should pass a copy of those objects instead. 363fa21bdfd5a8a5da3ec0530f7cc884994f92dc597Chet Haase * 3642794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>Since ValueAnimator does not know how to animate between arbitrary Objects, this 3652794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * factory method also takes a TypeEvaluator object that the ValueAnimator will use 3662794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * to perform that interpolation. 3672794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3682794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param evaluator A TypeEvaluator that will be called on each animation frame to 3692794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * provide the ncessry interpolation between the Object values to derive the animated 3702794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value. 3712794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 3722794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return A ValueAnimator object that is set up to animate between the given values. 3732794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 3742794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public static ValueAnimator ofObject(TypeEvaluator evaluator, Object... values) { 3752794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ValueAnimator anim = new ValueAnimator(); 3762794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setObjectValues(values); 3772794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setEvaluator(evaluator); 3782794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return anim; 3792794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3802794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 3812794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 3822794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Sets int values that will be animated between. A single 3832794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 3842794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 3852794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 3862794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 3872794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 3882794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3892794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>If there are already multiple sets of values defined for this ValueAnimator via more 3902794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * than one PropertyValuesHolder object, this method will set the values for the first 3912794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * of those objects.</p> 3922794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3932794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 3942794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 3952794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public void setIntValues(int... values) { 3962794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (values == null || values.length == 0) { 3972794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return; 3982794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3992794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (mValues == null || mValues.length == 0) { 40018772ea228f3d292629c4f0b5f6392d047e0530dRomain Guy setValues(PropertyValuesHolder.ofInt("", values)); 4012794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } else { 4022794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase PropertyValuesHolder valuesHolder = mValues[0]; 4032794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase valuesHolder.setIntValues(values); 4042794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 4052794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase // New property/values/target should cause re-initialization prior to starting 4062794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase mInitialized = false; 4072794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 4082794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 4092794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 4102794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Sets float values that will be animated between. A single 4112794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 4122794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 4132794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 4142794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 4152794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 4162794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 4172794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>If there are already multiple sets of values defined for this ValueAnimator via more 4182794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * than one PropertyValuesHolder object, this method will set the values for the first 4192794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * of those objects.</p> 4202794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 4212794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 4222794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 4232794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public void setFloatValues(float... values) { 4242794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (values == null || values.length == 0) { 4252794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return; 42641f041d9986f8a5d45b6cb0b86e881c81a412168Chet Haase } 4272794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (mValues == null || mValues.length == 0) { 42818772ea228f3d292629c4f0b5f6392d047e0530dRomain Guy setValues(PropertyValuesHolder.ofFloat("", values)); 4292794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } else { 4302794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase PropertyValuesHolder valuesHolder = mValues[0]; 4312794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase valuesHolder.setFloatValues(values); 4322794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 4332794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase // New property/values/target should cause re-initialization prior to starting 4342794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase mInitialized = false; 4352794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 4362794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 4372794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 4382794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Sets the values to animate between for this animation. A single 4392794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 4402794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 4412794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 4422794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 4432794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 4442794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 445fa21bdfd5a8a5da3ec0530f7cc884994f92dc597Chet Haase * <p><strong>Note:</strong> The Object values are stored as references to the original 446fa21bdfd5a8a5da3ec0530f7cc884994f92dc597Chet Haase * objects, which means that changes to those objects after this method is called will 447fa21bdfd5a8a5da3ec0530f7cc884994f92dc597Chet Haase * affect the values on the animator. If the objects will be mutated externally after 448fa21bdfd5a8a5da3ec0530f7cc884994f92dc597Chet Haase * this method is called, callers should pass a copy of those objects instead. 449fa21bdfd5a8a5da3ec0530f7cc884994f92dc597Chet Haase * 4502794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>If there are already multiple sets of values defined for this ValueAnimator via more 4512794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * than one PropertyValuesHolder object, this method will set the values for the first 4522794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * of those objects.</p> 4532794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 4542794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>There should be a TypeEvaluator set on the ValueAnimator that knows how to interpolate 4552794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * between these value objects. ValueAnimator only knows how to interpolate between the 4562794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * primitive types specified in the other setValues() methods.</p> 4572794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 4582794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values The set of values to animate between. 4592794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 4602794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public void setObjectValues(Object... values) { 4612794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (values == null || values.length == 0) { 4622794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return; 4632794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 4642794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (mValues == null || mValues.length == 0) { 46518772ea228f3d292629c4f0b5f6392d047e0530dRomain Guy setValues(PropertyValuesHolder.ofObject("", null, values)); 4662794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } else { 4672794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase PropertyValuesHolder valuesHolder = mValues[0]; 4682794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase valuesHolder.setObjectValues(values); 4692794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 4702794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase // New property/values/target should cause re-initialization prior to starting 4712794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase mInitialized = false; 472a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 473a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 474a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 475a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Sets the values, per property, being animated between. This function is called internally 476f76a50ce8fdc6aea22cabc77b2977a1a15a79630Ken Wakasa * by the constructors of ValueAnimator that take a list of values. But a ValueAnimator can 477a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * be constructed without values and this method can be called to set the values manually 478a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * instead. 479a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 480a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param values The set of values, per property, being animated between. 481a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 482a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setValues(PropertyValuesHolder... values) { 483a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = values.length; 484a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues = values; 485a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValuesMap = new HashMap<String, PropertyValuesHolder>(numValues); 486a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 48718772ea228f3d292629c4f0b5f6392d047e0530dRomain Guy PropertyValuesHolder valuesHolder = values[i]; 488a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValuesMap.put(valuesHolder.getPropertyName(), valuesHolder); 489a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 4900e0590bf3cb32e73f423c0fe39a180d4b3c4343dChet Haase // New property/values/target should cause re-initialization prior to starting 4910e0590bf3cb32e73f423c0fe39a180d4b3c4343dChet Haase mInitialized = false; 492a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 493a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 494a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 495a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Returns the values that this ValueAnimator animates between. These values are stored in 496a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * PropertyValuesHolder objects, even if the ValueAnimator was created with a simple list 497a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of value objects instead. 498a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 499a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return PropertyValuesHolder[] An array of PropertyValuesHolder objects which hold the 500a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * values, per property, that define the animation. 501a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 502a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public PropertyValuesHolder[] getValues() { 503a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mValues; 504a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 505a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 506a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 507a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This function is called immediately before processing the first animation 508a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frame of an animation. If there is a nonzero <code>startDelay</code>, the 509a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function is called after that delay ends. 510a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * It takes care of the final initialization steps for the 511a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation. 512a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 513a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>Overrides of this method should call the superclass method to ensure 514a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * that internal mechanisms for the animation are set up correctly.</p> 515a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 516c615c6fc9caca76cd96998f86e1f1e6393aeadbbTor Norbye @CallSuper 517a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase void initAnimation() { 518a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (!mInitialized) { 519a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = mValues.length; 520a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 521a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues[i].init(); 522a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 523a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mInitialized = true; 524a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 525a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 526a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 527a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 5282794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Sets the length of the animation. The default duration is 300 milliseconds. 529a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 53027c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase * @param duration The length of the animation, in milliseconds. This value cannot 53127c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase * be negative. 5322794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return ValueAnimator The object called with setDuration(). This return 5332794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value makes it easier to compose statements together that construct and then set the 5342794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * duration, as in <code>ValueAnimator.ofInt(0, 10).setDuration(500).start()</code>. 535a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 536c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown @Override 5372794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public ValueAnimator setDuration(long duration) { 53827c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase if (duration < 0) { 53927c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase throw new IllegalArgumentException("Animators cannot have negative duration: " + 54027c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase duration); 54127c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase } 542fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu mDuration = duration; 5432794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return this; 544a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 545a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 546fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu private long getScaledDuration() { 547fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu return (long)(mDuration * sDurationScale); 5487a08fe0e09c9bd5b66049738617cc9972651bf5bJeff Brown } 5497a08fe0e09c9bd5b66049738617cc9972651bf5bJeff Brown 550a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 5512794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Gets the length of the animation. The default duration is 300 milliseconds. 552a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 553a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return The length of the animation, in milliseconds. 554a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 555c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown @Override 556a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public long getDuration() { 557fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu return mDuration; 558a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 559a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 5601309914ebf21e705fc59d7d44014124d8a21a2d2Doris Liu @Override 5611309914ebf21e705fc59d7d44014124d8a21a2d2Doris Liu public long getTotalDuration() { 5621309914ebf21e705fc59d7d44014124d8a21a2d2Doris Liu if (mRepeatCount == INFINITE) { 5631309914ebf21e705fc59d7d44014124d8a21a2d2Doris Liu return DURATION_INFINITE; 5641309914ebf21e705fc59d7d44014124d8a21a2d2Doris Liu } else { 565fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu return mStartDelay + (mDuration * (mRepeatCount + 1)); 5661309914ebf21e705fc59d7d44014124d8a21a2d2Doris Liu } 5671309914ebf21e705fc59d7d44014124d8a21a2d2Doris Liu } 5681309914ebf21e705fc59d7d44014124d8a21a2d2Doris Liu 5691309914ebf21e705fc59d7d44014124d8a21a2d2Doris Liu /** 570a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Sets the position of the animation to the specified point in time. This time should 571a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * be between 0 and the total duration of the animation, including any repetition. If 572a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the animation has not yet been started, then it will not advance forward after it is 573a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * set to this time; it will simply set the time to this value and perform any appropriate 574a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * actions based on that time. If the animation is already running, then setCurrentPlayTime() 575a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * will set the current playing time to this value and continue playing from that point. 576a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 577a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param playTime The time, in milliseconds, to which the animation is advanced or rewound. 578a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 579a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setCurrentPlayTime(long playTime) { 580fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu float fraction = mDuration > 0 ? (float) playTime / mDuration : 1; 5810d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase setCurrentFraction(fraction); 5820d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase } 5830d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase 5840d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase /** 5850d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase * Sets the position of the animation to the specified fraction. This fraction should 5860d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase * be between 0 and the total fraction of the animation, including any repetition. That is, 5870d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase * a fraction of 0 will position the animation at the beginning, a value of 1 at the end, 588f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase * and a value of 2 at the end of a reversing animator that repeats once. If 5890d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase * the animation has not yet been started, then it will not advance forward after it is 5900d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase * set to this fraction; it will simply set the fraction to this value and perform any 5910d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase * appropriate actions based on that fraction. If the animation is already running, then 5920d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase * setCurrentFraction() will set the current fraction to this value and continue 5935a5afe010d2f8fb7e8f00858b8a305b4745c0469Eino-Ville Talvala * playing from that point. {@link Animator.AnimatorListener} events are not called 594f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase * due to changing the fraction; those events are only processed while the animation 595f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase * is running. 5960d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase * 597f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase * @param fraction The fraction to which the animation is advanced or rewound. Values 598f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase * outside the range of 0 to the maximum fraction for the animator will be clamped to 599f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase * the correct range. 6000d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase */ 6010d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase public void setCurrentFraction(float fraction) { 602a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase initAnimation(); 603fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu fraction = clampFraction(fraction); 604fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu long seekTime = (long) (getScaledDuration() * fraction); 605f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase long currentTime = AnimationUtils.currentAnimationTimeMillis(); 606f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase mStartTime = currentTime - seekTime; 607c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown mStartTimeCommitted = true; // do not allow start time to be compensated for jank 608caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu if (!isPulsingInternal()) { 609caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu // If the animation loop hasn't started, the startTime will be adjusted in the first 610caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu // frame based on seek fraction. 6110d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase mSeekFraction = fraction; 612a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 613fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu mOverallFraction = fraction; 614fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu final float currentIterationFraction = getCurrentIterationFraction(fraction); 615fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu animateValue(currentIterationFraction); 616fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu } 617fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu 618fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu /** 619fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * Calculates current iteration based on the overall fraction. The overall fraction will be 620fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * in the range of [0, mRepeatCount + 1]. Both current iteration and fraction in the current 621fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * iteration can be derived from it. 622fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu */ 623fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu private int getCurrentIteration(float fraction) { 624fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu fraction = clampFraction(fraction); 625fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu // If the overall fraction is a positive integer, we consider the current iteration to be 626fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu // complete. In other words, the fraction for the current iteration would be 1, and the 627fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu // current iteration would be overall fraction - 1. 628fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu double iteration = Math.floor(fraction); 629fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu if (fraction == iteration && fraction > 0) { 630fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu iteration--; 631fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu } 632fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu return (int) iteration; 633fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu } 634fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu 635fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu /** 636fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * Calculates the fraction of the current iteration, taking into account whether the animation 637fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * should be played backwards. E.g. When the animation is played backwards in an iteration, 638fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * the fraction for that iteration will go from 1f to 0f. 639fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu */ 640fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu private float getCurrentIterationFraction(float fraction) { 641fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu fraction = clampFraction(fraction); 642fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu int iteration = getCurrentIteration(fraction); 643fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu float currentFraction = fraction - iteration; 644fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu return shouldPlayBackward(iteration) ? 1f - currentFraction : currentFraction; 645fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu } 646fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu 647fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu /** 648fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * Clamps fraction into the correct range: [0, mRepeatCount + 1]. If repeat count is infinite, 649fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * no upper bound will be set for the fraction. 650fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * 651fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * @param fraction fraction to be clamped 652fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * @return fraction clamped into the range of [0, mRepeatCount + 1] 653fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu */ 654fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu private float clampFraction(float fraction) { 655fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu if (fraction < 0) { 656fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu fraction = 0; 657fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu } else if (mRepeatCount != INFINITE) { 658fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu fraction = Math.min(fraction, mRepeatCount + 1); 659fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu } 660fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu return fraction; 661fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu } 662fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu 663fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu /** 664fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * Calculates the direction of animation playing (i.e. forward or backward), based on 1) 665fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * whether the entire animation is being reversed, 2) repeat mode applied to the current 666fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu * iteration. 667fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu */ 668fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu private boolean shouldPlayBackward(int iteration) { 669fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu if (iteration > 0 && mRepeatMode == REVERSE && 670fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu (iteration < (mRepeatCount + 1) || mRepeatCount == INFINITE)) { 671fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu // if we were seeked to some other iteration in a reversing animator, 672fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu // figure out the correct direction to start playing based on the iteration 673fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu if (mReversing) { 674fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu return (iteration % 2) == 0; 675fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu } else { 676fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu return (iteration % 2) != 0; 677fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu } 678fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu } else { 679fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu return mReversing; 680f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase } 681a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 682a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 683a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 684a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Gets the current position of the animation in time, which is equal to the current 685a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * time minus the time that the animation started. An animation that is not yet started will 6864365e5a13755ffbdb977586c90b8b515add599aaChet Haase * return a value of zero, unless the animation has has its play time set via 6874365e5a13755ffbdb977586c90b8b515add599aaChet Haase * {@link #setCurrentPlayTime(long)} or {@link #setCurrentFraction(float)}, in which case 6884365e5a13755ffbdb977586c90b8b515add599aaChet Haase * it will return the time that was set. 689a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 690a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return The current position in time of the animation. 691a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 692a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public long getCurrentPlayTime() { 6934365e5a13755ffbdb977586c90b8b515add599aaChet Haase if (!mInitialized || (!mStarted && mSeekFraction < 0)) { 694a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return 0; 695a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 6964365e5a13755ffbdb977586c90b8b515add599aaChet Haase if (mSeekFraction >= 0) { 697fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu return (long) (mDuration * mSeekFraction); 6984365e5a13755ffbdb977586c90b8b515add599aaChet Haase } 699fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu float durationScale = sDurationScale == 0 ? 1 : sDurationScale; 700fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu return (long) ((AnimationUtils.currentAnimationTimeMillis() - mStartTime) / durationScale); 701a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 702a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 703a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 704a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, to delay starting the animation after 705a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link #start()} is called. 706a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 707a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return the number of milliseconds to delay running the animation 708a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 709c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown @Override 710a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public long getStartDelay() { 711fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu return mStartDelay; 712a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 713a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 714a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 715a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, to delay starting the animation after 71661045c518b18a7cee30954fe45f9db8c14e705e1Doris Liu * {@link #start()} is called. Note that the start delay should always be non-negative. Any 71761045c518b18a7cee30954fe45f9db8c14e705e1Doris Liu * negative start delay will be clamped to 0 on N and above. 71861045c518b18a7cee30954fe45f9db8c14e705e1Doris Liu * 719a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param startDelay The amount of the delay, in milliseconds 720a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 721c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown @Override 722a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setStartDelay(long startDelay) { 72361045c518b18a7cee30954fe45f9db8c14e705e1Doris Liu // Clamp start delay to non-negative range. 72461045c518b18a7cee30954fe45f9db8c14e705e1Doris Liu if (startDelay < 0) { 72561045c518b18a7cee30954fe45f9db8c14e705e1Doris Liu Log.w(TAG, "Start delay should always be non-negative"); 72661045c518b18a7cee30954fe45f9db8c14e705e1Doris Liu startDelay = 0; 72761045c518b18a7cee30954fe45f9db8c14e705e1Doris Liu } 728fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu mStartDelay = startDelay; 729a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 730a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 731a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 732a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, between each frame of the animation. This is a 733a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * requested time that the animation will attempt to honor, but the actual delay between 734a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frames may be different, depending on system load and capabilities. This is a static 735a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function because the same delay will be applied to all animations, since they are all 736a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * run off of a single timing loop. 737a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 73896e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * The frame delay may be ignored when the animation system uses an external timing 73996e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * source, such as the display refresh rate (vsync), to govern animations. 74096e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * 7412b2e2c8d252b33fa25ccba1e37322256cd44b3d5Doris Liu * Note that this method should be called from the same thread that {@link #start()} is 7422b2e2c8d252b33fa25ccba1e37322256cd44b3d5Doris Liu * called in order to check the frame delay for that animation. A runtime exception will be 7432b2e2c8d252b33fa25ccba1e37322256cd44b3d5Doris Liu * thrown if the calling thread does not have a Looper. 7442b2e2c8d252b33fa25ccba1e37322256cd44b3d5Doris Liu * 745a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return the requested time between frames, in milliseconds 746a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 747a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static long getFrameDelay() { 7483618d30f8ab6018025b11869676b309c3b4961cfDoris Liu return AnimationHandler.getInstance().getFrameDelay(); 749a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 750a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 751a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 752a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, between each frame of the animation. This is a 753a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * requested time that the animation will attempt to honor, but the actual delay between 754a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frames may be different, depending on system load and capabilities. This is a static 755a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function because the same delay will be applied to all animations, since they are all 756a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * run off of a single timing loop. 757a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 75896e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * The frame delay may be ignored when the animation system uses an external timing 75996e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * source, such as the display refresh rate (vsync), to govern animations. 76096e942dabeeaaa9ab6df3a870668c6fe53d930daJeff Brown * 7612b2e2c8d252b33fa25ccba1e37322256cd44b3d5Doris Liu * Note that this method should be called from the same thread that {@link #start()} is 7622b2e2c8d252b33fa25ccba1e37322256cd44b3d5Doris Liu * called in order to have the new frame delay take effect on that animation. A runtime 7632b2e2c8d252b33fa25ccba1e37322256cd44b3d5Doris Liu * exception will be thrown if the calling thread does not have a Looper. 7642b2e2c8d252b33fa25ccba1e37322256cd44b3d5Doris Liu * 765a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param frameDelay the requested time between frames, in milliseconds 766a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 767a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static void setFrameDelay(long frameDelay) { 7683618d30f8ab6018025b11869676b309c3b4961cfDoris Liu AnimationHandler.getInstance().setFrameDelay(frameDelay); 769a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 770a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 771a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 772a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The most recent value calculated by this <code>ValueAnimator</code> when there is just one 773a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * property being animated. This value is only sensible while the animation is running. The main 774a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * purpose for this read-only property is to retrieve the value from the <code>ValueAnimator</code> 775a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * during a call to {@link AnimatorUpdateListener#onAnimationUpdate(ValueAnimator)}, which 776a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is called during each animation frame, immediately after the value is calculated. 777a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 778a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return animatedValue The value most recently calculated by this <code>ValueAnimator</code> for 779a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the single property being animated. If there are several properties being animated 780a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * (specified by several PropertyValuesHolder objects in the constructor), this function 781a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * returns the animated value for the first of those objects. 782a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 783a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public Object getAnimatedValue() { 784a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mValues != null && mValues.length > 0) { 785a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mValues[0].getAnimatedValue(); 786a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 787a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Shouldn't get here; should always have values unless ValueAnimator was set up wrong 788a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return null; 789a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 790a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 791a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 792a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The most recent value calculated by this <code>ValueAnimator</code> for <code>propertyName</code>. 793a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The main purpose for this read-only property is to retrieve the value from the 794a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <code>ValueAnimator</code> during a call to 795a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link AnimatorUpdateListener#onAnimationUpdate(ValueAnimator)}, which 796a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is called during each animation frame, immediately after the value is calculated. 797a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 798a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return animatedValue The value most recently calculated for the named property 799a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * by this <code>ValueAnimator</code>. 800a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 801a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public Object getAnimatedValue(String propertyName) { 802a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder valuesHolder = mValuesMap.get(propertyName); 803a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (valuesHolder != null) { 804a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return valuesHolder.getAnimatedValue(); 805a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 806a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // At least avoid crashing if called with bogus propertyName 807a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return null; 808a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 809a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 810a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 811a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 812a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Sets how many times the animation should be repeated. If the repeat 813a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * count is 0, the animation is never repeated. If the repeat count is 814a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * greater than 0 or {@link #INFINITE}, the repeat mode will be taken 815a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * into account. The repeat count is 0 by default. 816a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 817a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param value the number of times the animation should be repeated 818a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 819a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setRepeatCount(int value) { 820a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mRepeatCount = value; 821a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 822a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 823a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Defines how many times the animation should repeat. The default value 824a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is 0. 825a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 826a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return the number of times the animation should repeat, or {@link #INFINITE} 827a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 828a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public int getRepeatCount() { 829a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mRepeatCount; 830a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 831a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 832a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 833a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Defines what this animation should do when it reaches the end. This 834a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * setting is applied only when the repeat count is either greater than 835a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 0 or {@link #INFINITE}. Defaults to {@link #RESTART}. 836a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 837a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param value {@link #RESTART} or {@link #REVERSE} 838a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 8397764b920f21e0b9250122ff26533d5dac98df6b3George Mount public void setRepeatMode(@RepeatMode int value) { 840a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mRepeatMode = value; 841a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 842a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 843a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 844a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Defines what this animation should do when it reaches the end. 845a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 846a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return either one of {@link #REVERSE} or {@link #RESTART} 847a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 8487764b920f21e0b9250122ff26533d5dac98df6b3George Mount @RepeatMode 849a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public int getRepeatMode() { 850a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mRepeatMode; 851a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 852a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 853a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 854a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Adds a listener to the set of listeners that are sent update events through the life of 855a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * an animation. This method is called on all listeners for every frame of the animation, 856a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * after the values for the animation have been calculated. 857a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 858a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param listener the listener to be added to the current set of listeners for this animation. 859a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 860a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void addUpdateListener(AnimatorUpdateListener listener) { 861a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners == null) { 862a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners = new ArrayList<AnimatorUpdateListener>(); 863a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 864a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners.add(listener); 865a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 866a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 867a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 8683060421045d4d9e411797f91bb509824b03e33fbJim Miller * Removes all listeners from the set listening to frame updates for this animation. 8693060421045d4d9e411797f91bb509824b03e33fbJim Miller */ 8703060421045d4d9e411797f91bb509824b03e33fbJim Miller public void removeAllUpdateListeners() { 8713060421045d4d9e411797f91bb509824b03e33fbJim Miller if (mUpdateListeners == null) { 8723060421045d4d9e411797f91bb509824b03e33fbJim Miller return; 8733060421045d4d9e411797f91bb509824b03e33fbJim Miller } 8743060421045d4d9e411797f91bb509824b03e33fbJim Miller mUpdateListeners.clear(); 8753060421045d4d9e411797f91bb509824b03e33fbJim Miller mUpdateListeners = null; 8763060421045d4d9e411797f91bb509824b03e33fbJim Miller } 8773060421045d4d9e411797f91bb509824b03e33fbJim Miller 8783060421045d4d9e411797f91bb509824b03e33fbJim Miller /** 879a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Removes a listener from the set listening to frame updates for this animation. 880a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 881a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param listener the listener to be removed from the current set of update listeners 882a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * for this animation. 883a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 884a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void removeUpdateListener(AnimatorUpdateListener listener) { 885a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners == null) { 886a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return; 887a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 888a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners.remove(listener); 889a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners.size() == 0) { 890a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners = null; 891a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 892a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 893a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 894a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 895a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 896a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The time interpolator used in calculating the elapsed fraction of this animation. The 897a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * interpolator determines whether the animation runs with linear or non-linear motion, 898a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * such as acceleration and deceleration. The default value is 899a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link android.view.animation.AccelerateDecelerateInterpolator} 900a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 90127c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase * @param value the interpolator to be used by this animation. A value of <code>null</code> 90227c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase * will result in linear interpolation. 903a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 904a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 905e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase public void setInterpolator(TimeInterpolator value) { 906a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (value != null) { 907a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mInterpolator = value; 90827c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase } else { 90927c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase mInterpolator = new LinearInterpolator(); 910a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 911a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 912a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 913a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 914a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Returns the timing interpolator that this ValueAnimator uses. 915a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 916a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return The timing interpolator for this ValueAnimator. 917a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 918430742f09063574271e6c4091de13b9b9e762514Chet Haase @Override 919e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase public TimeInterpolator getInterpolator() { 920a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mInterpolator; 921a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 922a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 923a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 924a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The type evaluator to be used when calculating the animated values of this animation. 925b2ab04ffb6894f399d5c9ceb15f64eb17b654426Chet Haase * The system will automatically assign a float or int evaluator based on the type 926a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of <code>startValue</code> and <code>endValue</code> in the constructor. But if these values 927a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * are not one of these primitive types, or if different evaluation is desired (such as is 928a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * necessary with int values that represent colors), a custom evaluator needs to be assigned. 92953ee3316bcb3590ff156b3fd7108903c0817c35dChet Haase * For example, when running an animation on color values, the {@link ArgbEvaluator} 930a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * should be used to get correct RGB color interpolation. 931a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 932a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>If this ValueAnimator has only one set of values being animated between, this evaluator 933a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * will be used for that set. If there are several sets of values being animated, which is 934fdd3ad7018ebb054c0288b8cd92739703a973181Chet Haase * the case if PropertyValuesHolder objects were set on the ValueAnimator, then the evaluator 935a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is assigned just to the first PropertyValuesHolder object.</p> 936a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 937a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param value the evaluator to be used this animation 938a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 939a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setEvaluator(TypeEvaluator value) { 940a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (value != null && mValues != null && mValues.length > 0) { 941a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues[0].setEvaluator(value); 942a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 943a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 944a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 94517cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase private void notifyStartListeners() { 94617cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase if (mListeners != null && !mStartListenersCalled) { 94717cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase ArrayList<AnimatorListener> tmpListeners = 94817cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase (ArrayList<AnimatorListener>) mListeners.clone(); 94917cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase int numListeners = tmpListeners.size(); 95017cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase for (int i = 0; i < numListeners; ++i) { 95117cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase tmpListeners.get(i).onAnimationStart(this); 95217cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase } 95317cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase } 95417cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase mStartListenersCalled = true; 95517cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase } 95617cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase 957a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 958a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Start the animation playing. This version of start() takes a boolean flag that indicates 959a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * whether the animation should play in reverse. The flag is usually false, but may be set 9602970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * to true if called from the reverse() method. 9612970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * 9622970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * <p>The animation started by calling this method will be run on the thread that called 9632970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * this method. This thread should have a Looper on it (a runtime exception will be thrown if 9642970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * this is not the case). Also, if the animation will animate 9652970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * properties of objects in the view hierarchy, then the calling thread should be the UI 9662970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * thread for that view hierarchy.</p> 967a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 968a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param playBackwards Whether the ValueAnimator should start playing in reverse. 969a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 970a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private void start(boolean playBackwards) { 9712970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase if (Looper.myLooper() == null) { 9722970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase throw new AndroidRuntimeException("Animators may only be run on Looper threads"); 9733060421045d4d9e411797f91bb509824b03e33fbJim Miller } 974f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase mReversing = playBackwards; 975fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu // Special case: reversing from seek-to-0 should act as if not seeked at all. 976fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu if (playBackwards && mSeekFraction != -1 && mSeekFraction != 0) { 977fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu if (mRepeatCount == INFINITE) { 978fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu // Calculate the fraction of the current iteration. 979fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu float fraction = (float) (mSeekFraction - Math.floor(mSeekFraction)); 980fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu mSeekFraction = 1 - fraction; 981f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase } else { 982fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu mSeekFraction = 1 + mRepeatCount - mSeekFraction; 983f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase } 984f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase } 9858b699792b677bd4dd8442b32641ac09d48fdd79cChet Haase mStarted = true; 9868aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase mPaused = false; 9873618d30f8ab6018025b11869676b309c3b4961cfDoris Liu mRunning = false; 988543a7ed7af992c5f62a9df1a20f3a2397d3e6ec3Justin Klaassen mAnimationEndRequested = false; 989caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu // Resets mLastFrameTime when start() is called, so that if the animation was running, 990caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu // calling start() would put the animation in the 991caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu // started-but-not-yet-reached-the-first-frame phase. 992caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu mLastFrameTime = 0; 9933618d30f8ab6018025b11869676b309c3b4961cfDoris Liu AnimationHandler animationHandler = AnimationHandler.getInstance(); 994fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu animationHandler.addAnimationFrameCallback(this, (long) (mStartDelay * sDurationScale)); 995f57bfe2fefc87fdb1dcc27b0f4b3a11996c15da2Doris Liu 996907c177b04d07d5d84005ac92df9bde6af7c394dGeorge Mount if (mStartDelay == 0 || mSeekFraction >= 0) { 997f57bfe2fefc87fdb1dcc27b0f4b3a11996c15da2Doris Liu // If there's no start delay, init the animation and notify start listeners right away 998fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu // to be consistent with the previous behavior. Otherwise, postpone this until the first 999fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu // frame after the start delay. 1000f57bfe2fefc87fdb1dcc27b0f4b3a11996c15da2Doris Liu startAnimation(); 1001b199da785b0174a2addcf0c4c31304d005dc69e9Doris Liu if (mSeekFraction == -1) { 1002b199da785b0174a2addcf0c4c31304d005dc69e9Doris Liu // No seek, start at play time 0. Note that the reason we are not using fraction 0 1003b199da785b0174a2addcf0c4c31304d005dc69e9Doris Liu // is because for animations with 0 duration, we want to be consistent with pre-N 1004b199da785b0174a2addcf0c4c31304d005dc69e9Doris Liu // behavior: skip to the final value immediately. 1005b199da785b0174a2addcf0c4c31304d005dc69e9Doris Liu setCurrentPlayTime(0); 1006b199da785b0174a2addcf0c4c31304d005dc69e9Doris Liu } else { 1007b199da785b0174a2addcf0c4c31304d005dc69e9Doris Liu setCurrentFraction(mSeekFraction); 1008b199da785b0174a2addcf0c4c31304d005dc69e9Doris Liu } 1009f57bfe2fefc87fdb1dcc27b0f4b3a11996c15da2Doris Liu } 1010a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1011a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1012a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 1013a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void start() { 1014a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase start(false); 1015a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1016a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1017a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 1018a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void cancel() { 10193618d30f8ab6018025b11869676b309c3b4961cfDoris Liu if (Looper.myLooper() == null) { 10203618d30f8ab6018025b11869676b309c3b4961cfDoris Liu throw new AndroidRuntimeException("Animators may only be run on Looper threads"); 10213618d30f8ab6018025b11869676b309c3b4961cfDoris Liu } 10223dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu 10233dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu // If end has already been requested, through a previous end() or cancel() call, no-op 10243dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu // until animation starts again. 10253dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu if (mAnimationEndRequested) { 10263dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu return; 10273dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu } 10283dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu 10292970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase // Only cancel if the animation is actually running or has been started and is about 10302970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase // to run 10313618d30f8ab6018025b11869676b309c3b4961cfDoris Liu // Only notify listeners if the animator has actually started 10323618d30f8ab6018025b11869676b309c3b4961cfDoris Liu if ((mStarted || mRunning) && mListeners != null) { 10333618d30f8ab6018025b11869676b309c3b4961cfDoris Liu if (!mRunning) { 10343618d30f8ab6018025b11869676b309c3b4961cfDoris Liu // If it's not yet running, then start listeners weren't called. Call them now. 10353618d30f8ab6018025b11869676b309c3b4961cfDoris Liu notifyStartListeners(); 10363618d30f8ab6018025b11869676b309c3b4961cfDoris Liu } 10373618d30f8ab6018025b11869676b309c3b4961cfDoris Liu ArrayList<AnimatorListener> tmpListeners = 10383618d30f8ab6018025b11869676b309c3b4961cfDoris Liu (ArrayList<AnimatorListener>) mListeners.clone(); 10393618d30f8ab6018025b11869676b309c3b4961cfDoris Liu for (AnimatorListener listener : tmpListeners) { 10403618d30f8ab6018025b11869676b309c3b4961cfDoris Liu listener.onAnimationCancel(this); 10417dfacdb1c820f955cb3cd6032ff5fbc2dd7d9df5Chet Haase } 10422970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase } 10433618d30f8ab6018025b11869676b309c3b4961cfDoris Liu endAnimation(); 10443618d30f8ab6018025b11869676b309c3b4961cfDoris Liu 1045a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1046a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1047a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 1048a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void end() { 10493618d30f8ab6018025b11869676b309c3b4961cfDoris Liu if (Looper.myLooper() == null) { 10503618d30f8ab6018025b11869676b309c3b4961cfDoris Liu throw new AndroidRuntimeException("Animators may only be run on Looper threads"); 10513618d30f8ab6018025b11869676b309c3b4961cfDoris Liu } 10523618d30f8ab6018025b11869676b309c3b4961cfDoris Liu if (!mRunning) { 1053a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Special case if the animation has not yet started; get it ready for ending 10543618d30f8ab6018025b11869676b309c3b4961cfDoris Liu startAnimation(); 105517cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase mStarted = true; 1056add6577a0196258e5a48c5deefcdb12e05c935b3Chet Haase } else if (!mInitialized) { 1057add6577a0196258e5a48c5deefcdb12e05c935b3Chet Haase initAnimation(); 1058e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase } 1059fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu animateValue(shouldPlayBackward(mRepeatCount) ? 0f : 1f); 10603618d30f8ab6018025b11869676b309c3b4961cfDoris Liu endAnimation(); 1061a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1062a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1063a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 10648aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase public void resume() { 1065a06b3f19d498e2c387e7a976f94d3cd5f1d77c35George Mount if (Looper.myLooper() == null) { 1066a06b3f19d498e2c387e7a976f94d3cd5f1d77c35George Mount throw new AndroidRuntimeException("Animators may only be resumed from the same " + 1067a06b3f19d498e2c387e7a976f94d3cd5f1d77c35George Mount "thread that the animator was started on"); 1068a06b3f19d498e2c387e7a976f94d3cd5f1d77c35George Mount } 1069a06b3f19d498e2c387e7a976f94d3cd5f1d77c35George Mount if (mPaused && !mResumed) { 10708aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase mResumed = true; 1071a06b3f19d498e2c387e7a976f94d3cd5f1d77c35George Mount if (mPauseTime > 0) { 1072a06b3f19d498e2c387e7a976f94d3cd5f1d77c35George Mount AnimationHandler handler = AnimationHandler.getInstance(); 1073a06b3f19d498e2c387e7a976f94d3cd5f1d77c35George Mount handler.addAnimationFrameCallback(this, 0); 1074a06b3f19d498e2c387e7a976f94d3cd5f1d77c35George Mount } 10758aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase } 10768aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase super.resume(); 10778aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase } 10788aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase 10798aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase @Override 10808aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase public void pause() { 10818aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase boolean previouslyPaused = mPaused; 10828aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase super.pause(); 10838aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase if (!previouslyPaused && mPaused) { 10848aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase mPauseTime = -1; 10858aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase mResumed = false; 10868aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase } 10878aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase } 10888aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase 10898aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase @Override 1090a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public boolean isRunning() { 10913618d30f8ab6018025b11869676b309c3b4961cfDoris Liu return mRunning; 10928b699792b677bd4dd8442b32641ac09d48fdd79cChet Haase } 10938b699792b677bd4dd8442b32641ac09d48fdd79cChet Haase 10948b699792b677bd4dd8442b32641ac09d48fdd79cChet Haase @Override 10958b699792b677bd4dd8442b32641ac09d48fdd79cChet Haase public boolean isStarted() { 10968b699792b677bd4dd8442b32641ac09d48fdd79cChet Haase return mStarted; 1097a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1098a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1099a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1100a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Plays the ValueAnimator in reverse. If the animation is already running, 1101a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * it will stop itself and play backwards from the point reached when reverse was called. 1102a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * If the animation is not currently running, then it will start from the end and 1103a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * play backwards. This behavior is only set for the current animation; future playing 1104a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of the animation will use the default behavior of playing forward. 1105a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 11067bc6a3f023ca3e1dde91fc97b6036dee3ba538a2ztenghui @Override 1107a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void reverse() { 1108caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu if (isPulsingInternal()) { 1109a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long currentTime = AnimationUtils.currentAnimationTimeMillis(); 1110a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long currentPlayTime = currentTime - mStartTime; 1111fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu long timeLeft = getScaledDuration() - currentPlayTime; 1112a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime - timeLeft; 1113c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown mStartTimeCommitted = true; // do not allow start time to be compensated for jank 1114f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase mReversing = !mReversing; 1115f43fb2a57f152b5760d8792fec26f36d46b23817Chet Haase } else if (mStarted) { 1116caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu mReversing = !mReversing; 1117f43fb2a57f152b5760d8792fec26f36d46b23817Chet Haase end(); 1118a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 1119a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase start(true); 1120a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1121a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1122a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1123a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 11247bc6a3f023ca3e1dde91fc97b6036dee3ba538a2ztenghui * @hide 11257bc6a3f023ca3e1dde91fc97b6036dee3ba538a2ztenghui */ 11267bc6a3f023ca3e1dde91fc97b6036dee3ba538a2ztenghui @Override 11277bc6a3f023ca3e1dde91fc97b6036dee3ba538a2ztenghui public boolean canReverse() { 11287bc6a3f023ca3e1dde91fc97b6036dee3ba538a2ztenghui return true; 11297bc6a3f023ca3e1dde91fc97b6036dee3ba538a2ztenghui } 11307bc6a3f023ca3e1dde91fc97b6036dee3ba538a2ztenghui 11317bc6a3f023ca3e1dde91fc97b6036dee3ba538a2ztenghui /** 1132a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Called internally to end an animation by removing it from the animations list. Must be 1133a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * called on the UI thread. 1134a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 11353dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu private void endAnimation() { 11363dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu if (mAnimationEndRequested) { 11373dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu return; 11383dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu } 11393618d30f8ab6018025b11869676b309c3b4961cfDoris Liu AnimationHandler handler = AnimationHandler.getInstance(); 11403618d30f8ab6018025b11869676b309c3b4961cfDoris Liu handler.removeCallback(this); 11413dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu 11423dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu mAnimationEndRequested = true; 11438aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase mPaused = false; 114417cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase if ((mStarted || mRunning) && mListeners != null) { 114517cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase if (!mRunning) { 114617cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase // If it's not yet running, then start listeners weren't called. Call them now. 114717cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase notifyStartListeners(); 114817cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase } 1149a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<AnimatorListener> tmpListeners = 1150a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase (ArrayList<AnimatorListener>) mListeners.clone(); 11517c608f25d494c8a0a671e7373efbb47ca635367eChet Haase int numListeners = tmpListeners.size(); 11527c608f25d494c8a0a671e7373efbb47ca635367eChet Haase for (int i = 0; i < numListeners; ++i) { 11537c608f25d494c8a0a671e7373efbb47ca635367eChet Haase tmpListeners.get(i).onAnimationEnd(this); 1154a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1155a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 11568b699792b677bd4dd8442b32641ac09d48fdd79cChet Haase mRunning = false; 1157b8f574a165bf6ec5b316734b367ac274ded4809bChet Haase mStarted = false; 115817cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase mStartListenersCalled = false; 1159f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase mReversing = false; 1160f57bfe2fefc87fdb1dcc27b0f4b3a11996c15da2Doris Liu mLastFrameTime = 0; 11619b80ca81a8cc33067d858c52c7acbef9d8bdaf6aChet Haase if (Trace.isTagEnabled(Trace.TRACE_TAG_VIEW)) { 11629b80ca81a8cc33067d858c52c7acbef9d8bdaf6aChet Haase Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, getNameForTrace(), 11639b80ca81a8cc33067d858c52c7acbef9d8bdaf6aChet Haase System.identityHashCode(this)); 11649b80ca81a8cc33067d858c52c7acbef9d8bdaf6aChet Haase } 1165a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1166a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1167a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1168a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Called internally to start an animation by adding it to the active animations list. Must be 1169a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * called on the UI thread. 1170a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 11713618d30f8ab6018025b11869676b309c3b4961cfDoris Liu private void startAnimation() { 11729b80ca81a8cc33067d858c52c7acbef9d8bdaf6aChet Haase if (Trace.isTagEnabled(Trace.TRACE_TAG_VIEW)) { 11739b80ca81a8cc33067d858c52c7acbef9d8bdaf6aChet Haase Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, getNameForTrace(), 11749b80ca81a8cc33067d858c52c7acbef9d8bdaf6aChet Haase System.identityHashCode(this)); 11759b80ca81a8cc33067d858c52c7acbef9d8bdaf6aChet Haase } 117666d48566537bd2d037e1eff919542731b93fa85cDoris Liu 117766d48566537bd2d037e1eff919542731b93fa85cDoris Liu mAnimationEndRequested = false; 1178a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase initAnimation(); 11793618d30f8ab6018025b11869676b309c3b4961cfDoris Liu mRunning = true; 1180fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu if (mSeekFraction >= 0) { 1181fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu mOverallFraction = mSeekFraction; 1182fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu } else { 1183fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu mOverallFraction = 0f; 1184fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu } 11853618d30f8ab6018025b11869676b309c3b4961cfDoris Liu if (mListeners != null) { 118617cf42cb85c22b50ecfa8d21efc992f99d20fc45Chet Haase notifyStartListeners(); 1187a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1188a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1189caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu 1190caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu /** 1191caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu * Internal only: This tracks whether the animation has gotten on the animation loop. Note 1192caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu * this is different than {@link #isRunning()} in that the latter tracks the time after start() 1193caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu * is called (or after start delay if any), which may be before the animation loop starts. 1194caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu */ 1195caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu private boolean isPulsingInternal() { 1196caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu return mLastFrameTime > 0; 1197caa2ebf814d0c0a4ff29e7f7a7ee8ca46df08802Doris Liu } 1198a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1199a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1200fdd3ad7018ebb054c0288b8cd92739703a973181Chet Haase * Returns the name of this animator for debugging purposes. 1201fdd3ad7018ebb054c0288b8cd92739703a973181Chet Haase */ 1202fdd3ad7018ebb054c0288b8cd92739703a973181Chet Haase String getNameForTrace() { 1203fdd3ad7018ebb054c0288b8cd92739703a973181Chet Haase return "animator"; 1204fdd3ad7018ebb054c0288b8cd92739703a973181Chet Haase } 1205fdd3ad7018ebb054c0288b8cd92739703a973181Chet Haase 1206a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1207c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * Applies an adjustment to the animation to compensate for jank between when 1208c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown * the animation first ran and when the frame was drawn. 12093618d30f8ab6018025b11869676b309c3b4961cfDoris Liu * @hide 1210c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown */ 12113618d30f8ab6018025b11869676b309c3b4961cfDoris Liu public void commitAnimationFrame(long frameTime) { 1212c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown if (!mStartTimeCommitted) { 1213c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown mStartTimeCommitted = true; 12143618d30f8ab6018025b11869676b309c3b4961cfDoris Liu long adjustment = frameTime - mLastFrameTime; 12153618d30f8ab6018025b11869676b309c3b4961cfDoris Liu if (adjustment > 0) { 1216c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown mStartTime += adjustment; 1217c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown if (DEBUG) { 1218c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown Log.d(TAG, "Adjusted start time by " + adjustment + " ms: " + toString()); 1219c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown } 1220c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown } 1221c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown } 1222c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown } 1223c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown 1224c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown /** 1225a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This internal function processes a single animation frame for a given animation. The 1226a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * currentTime parameter is the timing pulse sent by the handler, used to calculate the 1227a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * elapsed duration, and therefore 1228a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the elapsed fraction, of the animation. The return value indicates whether the animation 1229a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * should be ended (which happens when the elapsed time of the animation exceeds the 1230a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation's duration, including the repeatCount). 1231a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 1232a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param currentTime The current time, as tracked by the static timing handler 1233a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return true if the animation's duration, including any repetitions due to 12343618d30f8ab6018025b11869676b309c3b4961cfDoris Liu * <code>repeatCount</code> has been exceeded and the animation should be ended. 1235a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 12363618d30f8ab6018025b11869676b309c3b4961cfDoris Liu boolean animateBasedOnTime(long currentTime) { 1237a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase boolean done = false; 12383618d30f8ab6018025b11869676b309c3b4961cfDoris Liu if (mRunning) { 123956b0b570890dbb7baa00da95f5be2eb3e0122f0aDoris Liu final long scaledDuration = getScaledDuration(); 124056b0b570890dbb7baa00da95f5be2eb3e0122f0aDoris Liu final float fraction = scaledDuration > 0 ? 124156b0b570890dbb7baa00da95f5be2eb3e0122f0aDoris Liu (float)(currentTime - mStartTime) / scaledDuration : 1f; 1242fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu final float lastFraction = mOverallFraction; 1243fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu final boolean newIteration = (int) fraction > (int) lastFraction; 1244fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu final boolean lastIterationFinished = (fraction >= mRepeatCount + 1) && 1245fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu (mRepeatCount != INFINITE); 124656b0b570890dbb7baa00da95f5be2eb3e0122f0aDoris Liu if (scaledDuration == 0) { 124756b0b570890dbb7baa00da95f5be2eb3e0122f0aDoris Liu // 0 duration animator, ignore the repeat count and skip to the end 124856b0b570890dbb7baa00da95f5be2eb3e0122f0aDoris Liu done = true; 124956b0b570890dbb7baa00da95f5be2eb3e0122f0aDoris Liu } else if (newIteration && !lastIterationFinished) { 1250fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu // Time to repeat 1251fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu if (mListeners != null) { 1252fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu int numListeners = mListeners.size(); 1253fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu for (int i = 0; i < numListeners; ++i) { 1254fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu mListeners.get(i).onAnimationRepeat(this); 1255a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1256a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1257fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu } else if (lastIterationFinished) { 1258fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu done = true; 1259a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1260fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu mOverallFraction = clampFraction(fraction); 1261fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu float currentIterationFraction = getCurrentIterationFraction(mOverallFraction); 1262fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu animateValue(currentIterationFraction); 1263a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1264a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return done; 1265a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1266a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1267a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 126820c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown * Processes a frame of the animation, adjusting the start time if needed. 126920c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown * 127020c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown * @param frameTime The frame time. 127120c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown * @return true if the animation has ended. 12723618d30f8ab6018025b11869676b309c3b4961cfDoris Liu * @hide 127320c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown */ 12743618d30f8ab6018025b11869676b309c3b4961cfDoris Liu public final void doAnimationFrame(long frameTime) { 12753618d30f8ab6018025b11869676b309c3b4961cfDoris Liu AnimationHandler handler = AnimationHandler.getInstance(); 1276f57bfe2fefc87fdb1dcc27b0f4b3a11996c15da2Doris Liu if (mLastFrameTime == 0) { 12773618d30f8ab6018025b11869676b309c3b4961cfDoris Liu // First frame 12783618d30f8ab6018025b11869676b309c3b4961cfDoris Liu handler.addOneShotCommitCallback(this); 1279f57bfe2fefc87fdb1dcc27b0f4b3a11996c15da2Doris Liu if (mStartDelay > 0) { 1280f57bfe2fefc87fdb1dcc27b0f4b3a11996c15da2Doris Liu startAnimation(); 1281f57bfe2fefc87fdb1dcc27b0f4b3a11996c15da2Doris Liu } 12820d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase if (mSeekFraction < 0) { 128320c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown mStartTime = frameTime; 128420c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown } else { 1285fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu long seekTime = (long) (getScaledDuration() * mSeekFraction); 12860d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase mStartTime = frameTime - seekTime; 12870d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase mSeekFraction = -1; 128820c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown } 1289c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown mStartTimeCommitted = false; // allow start time to be compensated for jank 129020c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown } 1291f57bfe2fefc87fdb1dcc27b0f4b3a11996c15da2Doris Liu mLastFrameTime = frameTime; 12928aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase if (mPaused) { 1293a06b3f19d498e2c387e7a976f94d3cd5f1d77c35George Mount mPauseTime = frameTime; 1294a06b3f19d498e2c387e7a976f94d3cd5f1d77c35George Mount handler.removeCallback(this); 12953618d30f8ab6018025b11869676b309c3b4961cfDoris Liu return; 12968aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase } else if (mResumed) { 12978aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase mResumed = false; 12988aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase if (mPauseTime > 0) { 12998aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase // Offset by the duration that the animation was paused 13008aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase mStartTime += (frameTime - mPauseTime); 1301c42b28dda45347b05826dc3e04f5605a60867a63Jeff Brown mStartTimeCommitted = false; // allow start time to be compensated for jank 13028aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase } 13033618d30f8ab6018025b11869676b309c3b4961cfDoris Liu handler.addOneShotCommitCallback(this); 13048aa1ffb0ed292891030992c65df4e5dc8bd37524Chet Haase } 130520c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown // The frame time might be before the start time during the first frame of 130620c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown // an animation. The "current time" must always be on or after the start 130720c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown // time to avoid animating frames at negative time intervals. In practice, this 130820c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown // is very rare and only happens when seeking backwards. 130920c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown final long currentTime = Math.max(frameTime, mStartTime); 13103618d30f8ab6018025b11869676b309c3b4961cfDoris Liu boolean finished = animateBasedOnTime(currentTime); 13113618d30f8ab6018025b11869676b309c3b4961cfDoris Liu 13123618d30f8ab6018025b11869676b309c3b4961cfDoris Liu if (finished) { 13133618d30f8ab6018025b11869676b309c3b4961cfDoris Liu endAnimation(); 13143618d30f8ab6018025b11869676b309c3b4961cfDoris Liu } 131520c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown } 131620c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown 131720c4f87b2916d05e860d11568d7db6b2d340e909Jeff Brown /** 1318a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase * Returns the current animation fraction, which is the elapsed/interpolated fraction used in 1319a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase * the most recent frame update on the animation. 1320a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase * 1321a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase * @return Elapsed/interpolated fraction of the animation. 1322a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase */ 1323a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase public float getAnimatedFraction() { 1324a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase return mCurrentFraction; 1325a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase } 1326a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase 1327a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase /** 1328a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This method is called with the elapsed fraction of the animation during every 1329a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation frame. This function turns the elapsed fraction into an interpolated fraction 1330a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * and then into an animated value (from the evaluator. The function is called mostly during 1331a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation updates, but it is also called when the <code>end()</code> 1332a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function is called, to set the final value on the property. 1333a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 1334a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>Overrides of this method must call the superclass to perform the calculation 1335a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of the animated value.</p> 1336a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 1337a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param fraction The elapsed fraction of the animation. 1338a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1339c615c6fc9caca76cd96998f86e1f1e6393aeadbbTor Norbye @CallSuper 1340a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase void animateValue(float fraction) { 1341a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase fraction = mInterpolator.getInterpolation(fraction); 1342a00f3865f55c5c9cb74510ee2b239d101230133cChet Haase mCurrentFraction = fraction; 1343a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = mValues.length; 1344a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 1345a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues[i].calculateValue(fraction); 1346a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1347a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners != null) { 1348a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numListeners = mUpdateListeners.size(); 1349a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numListeners; ++i) { 1350a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners.get(i).onAnimationUpdate(this); 1351a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1352a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1353a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1354a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1355a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 1356a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public ValueAnimator clone() { 1357a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase final ValueAnimator anim = (ValueAnimator) super.clone(); 1358a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners != null) { 1359d422dc358f0100106dc07d7b903201eb9b043b11Yigit Boyar anim.mUpdateListeners = new ArrayList<AnimatorUpdateListener>(mUpdateListeners); 1360a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 13610d1c27a713cb49de8f6f4fd0a129baa883153921Chet Haase anim.mSeekFraction = -1; 1362f4e3bab9253bba2c0086c35f4e5a1f7e41324876Chet Haase anim.mReversing = false; 1363a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mInitialized = false; 136426e9a19900bae56b012425a114685d42dfa2fde1ztenghui anim.mStarted = false; 136526e9a19900bae56b012425a114685d42dfa2fde1ztenghui anim.mRunning = false; 136626e9a19900bae56b012425a114685d42dfa2fde1ztenghui anim.mPaused = false; 136726e9a19900bae56b012425a114685d42dfa2fde1ztenghui anim.mResumed = false; 136826e9a19900bae56b012425a114685d42dfa2fde1ztenghui anim.mStartListenersCalled = false; 1369e1b5c2b48a5cf1dd3712dde35b59bc18851b4018ztenghui anim.mStartTime = 0; 1370e1b5c2b48a5cf1dd3712dde35b59bc18851b4018ztenghui anim.mStartTimeCommitted = false; 13713dbaae1ef4f221b3626810f4ba19eec068dd6304Doris Liu anim.mAnimationEndRequested = false; 1372e1b5c2b48a5cf1dd3712dde35b59bc18851b4018ztenghui anim.mPauseTime = 0; 13733618d30f8ab6018025b11869676b309c3b4961cfDoris Liu anim.mLastFrameTime = 0; 1374fbe94ece70c8064e9d9d6f6c278bb9ab310911cdDoris Liu anim.mOverallFraction = 0; 1375e1b5c2b48a5cf1dd3712dde35b59bc18851b4018ztenghui anim.mCurrentFraction = 0; 137626e9a19900bae56b012425a114685d42dfa2fde1ztenghui 1377a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder[] oldValues = mValues; 1378a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (oldValues != null) { 1379a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = oldValues.length; 1380a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mValues = new PropertyValuesHolder[numValues]; 1381a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mValuesMap = new HashMap<String, PropertyValuesHolder>(numValues); 1382a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 1383d4dd7025a1b356476e119de19a2e2cd5cf50d43cChet Haase PropertyValuesHolder newValuesHolder = oldValues[i].clone(); 1384d4dd7025a1b356476e119de19a2e2cd5cf50d43cChet Haase anim.mValues[i] = newValuesHolder; 1385d4dd7025a1b356476e119de19a2e2cd5cf50d43cChet Haase anim.mValuesMap.put(newValuesHolder.getPropertyName(), newValuesHolder); 1386a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1387a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1388a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return anim; 1389a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1390a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1391a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1392a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Implementors of this interface can add themselves as update listeners 1393a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * to an <code>ValueAnimator</code> instance to receive callbacks on every animation 1394a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frame, after the current frame's values have been calculated for that 1395a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <code>ValueAnimator</code>. 1396a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1397a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static interface AnimatorUpdateListener { 1398a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1399a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>Notifies the occurrence of another frame of the animation.</p> 1400a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 1401a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param animation The animation which was repeated. 1402a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1403a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase void onAnimationUpdate(ValueAnimator animation); 1404a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1405a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1406599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick 1407599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick /** 1408599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * Return the number of animations currently running. 1409599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * 14109c38dbeb1d183ecd48bbf5d18a39f5e0508a1223Jeff Brown * Used by StrictMode internally to annotate violations. 14119c38dbeb1d183ecd48bbf5d18a39f5e0508a1223Jeff Brown * May be called on arbitrary threads! 1412599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * 1413599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * @hide 1414599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick */ 1415599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick public static int getCurrentAnimationsCount() { 14163618d30f8ab6018025b11869676b309c3b4961cfDoris Liu return AnimationHandler.getAnimationCount(); 14178901ffab294934fc4899143f31bd58f3d58df225Patrick Dubroy } 1418e9140a72b1059574046a624b471b2c3a35806496Chet Haase 1419e9140a72b1059574046a624b471b2c3a35806496Chet Haase @Override 1420e9140a72b1059574046a624b471b2c3a35806496Chet Haase public String toString() { 1421e9140a72b1059574046a624b471b2c3a35806496Chet Haase String returnVal = "ValueAnimator@" + Integer.toHexString(hashCode()); 1422e9140a72b1059574046a624b471b2c3a35806496Chet Haase if (mValues != null) { 1423e9140a72b1059574046a624b471b2c3a35806496Chet Haase for (int i = 0; i < mValues.length; ++i) { 1424e9140a72b1059574046a624b471b2c3a35806496Chet Haase returnVal += "\n " + mValues[i].toString(); 1425e9140a72b1059574046a624b471b2c3a35806496Chet Haase } 1426e9140a72b1059574046a624b471b2c3a35806496Chet Haase } 1427e9140a72b1059574046a624b471b2c3a35806496Chet Haase return returnVal; 1428e9140a72b1059574046a624b471b2c3a35806496Chet Haase } 1429d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck 1430d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck /** 1431d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * <p>Whether or not the ValueAnimator is allowed to run asynchronously off of 1432d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * the UI thread. This is a hint that informs the ValueAnimator that it is 1433d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * OK to run the animation off-thread, however ValueAnimator may decide 1434d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * that it must run the animation on the UI thread anyway. For example if there 1435d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * is an {@link AnimatorUpdateListener} the animation will run on the UI thread, 1436d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * regardless of the value of this hint.</p> 1437d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * 1438d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * <p>Regardless of whether or not the animation runs asynchronously, all 1439d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * listener callbacks will be called on the UI thread.</p> 1440d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * 1441d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * <p>To be able to use this hint the following must be true:</p> 1442d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * <ol> 1443d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * <li>{@link #getAnimatedFraction()} is not needed (it will return undefined values).</li> 1444d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * <li>The animator is immutable while {@link #isStarted()} is true. Requests 1445d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * to change values, duration, delay, etc... may be ignored.</li> 1446d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * <li>Lifecycle callback events may be asynchronous. Events such as 1447d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * {@link Animator.AnimatorListener#onAnimationEnd(Animator)} or 1448d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * {@link Animator.AnimatorListener#onAnimationRepeat(Animator)} may end up delayed 1449d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * as they must be posted back to the UI thread, and any actions performed 1450d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * by those callbacks (such as starting new animations) will not happen 1451d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * in the same frame.</li> 1452d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * <li>State change requests ({@link #cancel()}, {@link #end()}, {@link #reverse()}, etc...) 1453d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * may be asynchronous. It is guaranteed that all state changes that are 1454d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * performed on the UI thread in the same frame will be applied as a single 1455d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * atomic update, however that frame may be the current frame, 1456d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * the next frame, or some future frame. This will also impact the observed 1457d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * state of the Animator. For example, {@link #isStarted()} may still return true 1458d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * after a call to {@link #end()}. Using the lifecycle callbacks is preferred over 1459d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * queries to {@link #isStarted()}, {@link #isRunning()}, and {@link #isPaused()} 1460d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * for this reason.</li> 1461d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * </ol> 1462d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck * @hide 1463d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck */ 1464c01bd1167a1b08d59557f214ddc48cf24d3b8d0aJohn Reck @Override 1465d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck public void setAllowRunningAsynchronously(boolean mayRunAsync) { 1466d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck // It is up to subclasses to support this, if they can. 1467d3de42cae84fadfa1befd082a2cf1bf72f9ad82aJohn Reck } 1468599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick} 1469