ValueAnimator.java revision 27c1d4debb3848f5accd5673fffeeacad3e61648
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 19a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport android.os.Handler; 20a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport android.os.Looper; 21a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport android.os.Message; 222970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haaseimport android.util.AndroidRuntimeException; 23a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport android.view.animation.AccelerateDecelerateInterpolator; 24a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport android.view.animation.AnimationUtils; 2527c1d4debb3848f5accd5673fffeeacad3e61648Chet Haaseimport android.view.animation.LinearInterpolator; 26a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 27a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport java.util.ArrayList; 28a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport java.util.HashMap; 29a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 30a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase/** 31a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This class provides a simple timing engine for running animations 32a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * which calculate animated values and set them on target objects. 33a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 34a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>There is a single timing pulse that all animations use. It runs in a 35a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * custom handler to ensure that property changes happen on the UI thread.</p> 36a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 37a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>By default, ValueAnimator uses non-linear time interpolation, via the 38a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link AccelerateDecelerateInterpolator} class, which accelerates into and decelerates 39a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * out of an animation. This behavior can be changed by calling 40e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase * {@link ValueAnimator#setInterpolator(TimeInterpolator)}.</p> 41a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 422794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haasepublic class ValueAnimator extends Animator { 43a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 44a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 45a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Internal constants 46a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 47a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 48a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /* 49a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The default amount of time in ms between animation frames 50a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 51608fc3cbed6062f29cd512c08aacb8c1632a8851Chet Haase private static final long DEFAULT_FRAME_DELAY = 10; 52a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 53a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 54a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Messages sent to timing handler: START is sent when an animation first begins, FRAME is sent 55a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * by the handler to itself to process the next animation frame 56a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 57a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final int ANIMATION_START = 0; 58a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final int ANIMATION_FRAME = 1; 59a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 60a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 61a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Values used with internal variable mPlayingState to indicate the current state of an 62a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation. 63a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 64051d35e41f7b21cd8a1608bdce10cf70952c6be4Chet Haase static final int STOPPED = 0; // Not yet playing 65051d35e41f7b21cd8a1608bdce10cf70952c6be4Chet Haase static final int RUNNING = 1; // Playing normally 66051d35e41f7b21cd8a1608bdce10cf70952c6be4Chet Haase static final int SEEKED = 2; // Seeked to some time value 67a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 68a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 69a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Internal variables 70a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * NOTE: This object implements the clone() method, making a deep copy of any referenced 71a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * objects. As other non-trivial fields are added to this class, make sure to add logic 72a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * to clone() to make deep copies of them. 73a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 74a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 75a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The first time that the animation's animateFrame() method is called. This time is used to 76a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // determine elapsed time (and therefore the elapsed fraction) in subsequent calls 77a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // to animateFrame() 78051d35e41f7b21cd8a1608bdce10cf70952c6be4Chet Haase long mStartTime; 79a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 80a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 81a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Set when setCurrentPlayTime() is called. If negative, animation is not currently seeked 82a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * to a value. 83a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 84051d35e41f7b21cd8a1608bdce10cf70952c6be4Chet Haase long mSeekTime = -1; 85a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 86e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase // TODO: We access the following ThreadLocal variables often, some of them on every update. 87e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase // If ThreadLocal access is significantly expensive, we may want to put all of these 88e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase // fields into a structure sot hat we just access ThreadLocal once to get the reference 89e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase // to that structure, then access the structure directly for each field. 90e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase 91a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The static sAnimationHandler processes the internal timing loop on which all animations 92a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // are based 93e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase private static ThreadLocal<AnimationHandler> sAnimationHandler = 94e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase new ThreadLocal<AnimationHandler>(); 95e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase 96e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase // The per-thread list of all active animations 97e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase private static final ThreadLocal<ArrayList<ValueAnimator>> sAnimations = 98e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase new ThreadLocal<ArrayList<ValueAnimator>>() { 99e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase @Override 100e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase protected ArrayList<ValueAnimator> initialValue() { 101e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase return new ArrayList<ValueAnimator>(); 102e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase } 103e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase }; 104e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase 105e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase // The per-thread set of animations to be started on the next animation frame 106e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase private static final ThreadLocal<ArrayList<ValueAnimator>> sPendingAnimations = 107e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase new ThreadLocal<ArrayList<ValueAnimator>>() { 108e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase @Override 109e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase protected ArrayList<ValueAnimator> initialValue() { 110e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase return new ArrayList<ValueAnimator>(); 111e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase } 112e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase }; 113e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase 114e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase /** 115e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase * Internal per-thread collections used to avoid set collisions as animations start and end 116e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase * while being processed. 117e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase */ 118e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase private static final ThreadLocal<ArrayList<ValueAnimator>> sDelayedAnims = 119e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase new ThreadLocal<ArrayList<ValueAnimator>>() { 120e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase @Override 121e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase protected ArrayList<ValueAnimator> initialValue() { 122e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase return new ArrayList<ValueAnimator>(); 123e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase } 124e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase }; 125a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 126e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase private static final ThreadLocal<ArrayList<ValueAnimator>> sEndingAnims = 127e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase new ThreadLocal<ArrayList<ValueAnimator>>() { 128e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase @Override 129e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase protected ArrayList<ValueAnimator> initialValue() { 130e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase return new ArrayList<ValueAnimator>(); 131e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase } 132e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase }; 133a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 134e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase private static final ThreadLocal<ArrayList<ValueAnimator>> sReadyAnims = 135e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase new ThreadLocal<ArrayList<ValueAnimator>>() { 136e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase @Override 137e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase protected ArrayList<ValueAnimator> initialValue() { 138e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase return new ArrayList<ValueAnimator>(); 139e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase } 140e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase }; 141a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 142a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The time interpolator to be used if none is set on the animation 143e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase private static final TimeInterpolator sDefaultInterpolator = 144e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase new AccelerateDecelerateInterpolator(); 145a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 146a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // type evaluators for the three primitive types handled by this implementation 147a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final TypeEvaluator sIntEvaluator = new IntEvaluator(); 148a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final TypeEvaluator sFloatEvaluator = new FloatEvaluator(); 149a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final TypeEvaluator sDoubleEvaluator = new DoubleEvaluator(); 150a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 151a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 152a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Used to indicate whether the animation is currently playing in reverse. This causes the 153a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * elapsed fraction to be inverted to calculate the appropriate values. 154a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 155a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private boolean mPlayingBackwards = false; 156a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 157a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 158a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This variable tracks the current iteration that is playing. When mCurrentIteration exceeds the 159a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * repeatCount (if repeatCount!=INFINITE), the animation ends 160a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 161a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private int mCurrentIteration = 0; 162a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 163a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 164a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Tracks whether a startDelay'd animation has begun playing through the startDelay. 165a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 166a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private boolean mStartedDelay = false; 167a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 168a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 169a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Tracks the time at which the animation began playing through its startDelay. This is 170a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * different from the mStartTime variable, which is used to track when the animation became 171a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * active (which is when the startDelay expired and the animation was added to the active 172a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animations list). 173a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 174a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private long mDelayStartTime; 175a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 176a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 177a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Flag that represents the current state of the animation. Used to figure out when to start 178a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * an animation (if state == STOPPED). Also used to end an animation that 179a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * has been cancel()'d or end()'d since the last animation frame. Possible values are 180e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase * STOPPED, RUNNING, SEEKED. 181a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 182051d35e41f7b21cd8a1608bdce10cf70952c6be4Chet Haase int mPlayingState = STOPPED; 183a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 184a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 185a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Flag that denotes whether the animation is set up and ready to go. Used to 186a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * set up animation that has not yet been started. 187a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 188a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase boolean mInitialized = false; 189a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 190a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // 191a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Backing variables 192a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // 193a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 194a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // How long the animation should last in ms 1952794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase private long mDuration = 300; 196a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 197a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The amount of time in ms to delay starting the animation after start() is called 198a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private long mStartDelay = 0; 199a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 200a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The number of milliseconds between animation frames 201a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static long sFrameDelay = DEFAULT_FRAME_DELAY; 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 */ 224a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private 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 241a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 242a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * When the animation reaches the end and <code>repeatCount</code> is INFINITE 243a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * or a positive value, the animation restarts from the beginning. 244a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 245a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static final int RESTART = 1; 246a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 247a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * When the animation reaches the end and <code>repeatCount</code> is INFINITE 248a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * or a positive value, the animation reverses direction on every iteration. 249a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 250a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static final int REVERSE = 2; 251a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 252a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This value used used with the {@link #setRepeatCount(int)} property to repeat 253a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the animation indefinitely. 254a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 255a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static final int INFINITE = -1; 256a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 257a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 258a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Creates a new ValueAnimator object. This default constructor is primarily for 2592794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * use internally; the factory methods which take parameters are more generally 260a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * useful. 261a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 262a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public ValueAnimator() { 263a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 264a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 265a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 2662794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Constructs and returns a ValueAnimator that animates between int values. A single 2672794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 2682794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 2692794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 2702794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 2712794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 272a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 2732794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 2742794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return A ValueAnimator object that is set up to animate between the given values. 27541f041d9986f8a5d45b6cb0b86e881c81a412168Chet Haase */ 2762794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public static ValueAnimator ofInt(int... values) { 2772794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ValueAnimator anim = new ValueAnimator(); 2782794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setIntValues(values); 2792794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return anim; 2802794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 2812794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 2822794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 2832794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Constructs and returns a ValueAnimator that animates between float values. A single 2842794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 2852794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 2862794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 2872794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 2882794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 2892794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 2902794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 2912794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return A ValueAnimator object that is set up to animate between the given values. 2922794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 2932794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public static ValueAnimator ofFloat(float... values) { 2942794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ValueAnimator anim = new ValueAnimator(); 2952794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setFloatValues(values); 2962794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return anim; 2972794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 2982794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 2992794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 3002794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Constructs and returns a ValueAnimator that animates between the values 3012794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * specified in the PropertyValuesHolder objects. 3022794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3032794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of PropertyValuesHolder objects whose values will be animated 3042794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * between over time. 3052794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return A ValueAnimator object that is set up to animate between the given values. 3062794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 3072794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public static ValueAnimator ofPropertyValuesHolder(PropertyValuesHolder... values) { 3082794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ValueAnimator anim = new ValueAnimator(); 3092794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setValues(values); 3102794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return anim; 3112794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3122794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 3132794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Constructs and returns a ValueAnimator that animates between Object values. A single 3142794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 3152794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 3162794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 3172794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 3182794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 3192794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3202794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>Since ValueAnimator does not know how to animate between arbitrary Objects, this 3212794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * factory method also takes a TypeEvaluator object that the ValueAnimator will use 3222794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * to perform that interpolation. 3232794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3242794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param evaluator A TypeEvaluator that will be called on each animation frame to 3252794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * provide the ncessry interpolation between the Object values to derive the animated 3262794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value. 3272794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 3282794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return A ValueAnimator object that is set up to animate between the given values. 3292794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 3302794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public static ValueAnimator ofObject(TypeEvaluator evaluator, Object... values) { 3312794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ValueAnimator anim = new ValueAnimator(); 3322794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setObjectValues(values); 3332794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setEvaluator(evaluator); 3342794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return anim; 3352794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3362794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 3372794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 3382794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Sets int values that will be animated between. A single 3392794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 3402794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 3412794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 3422794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 3432794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 3442794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3452794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>If there are already multiple sets of values defined for this ValueAnimator via more 3462794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * than one PropertyValuesHolder object, this method will set the values for the first 3472794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * of those objects.</p> 3482794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3492794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 3502794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 3512794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public void setIntValues(int... values) { 3522794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (values == null || values.length == 0) { 3532794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return; 3542794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3552794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (mValues == null || mValues.length == 0) { 3562794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase setValues(new PropertyValuesHolder[]{PropertyValuesHolder.ofInt("", values)}); 3572794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } else { 3582794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase PropertyValuesHolder valuesHolder = mValues[0]; 3592794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase valuesHolder.setIntValues(values); 3602794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3612794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase // New property/values/target should cause re-initialization prior to starting 3622794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase mInitialized = false; 3632794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3642794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 3652794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 3662794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Sets float values that will be animated between. A single 3672794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 3682794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 3692794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 3702794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 3712794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 3722794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3732794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>If there are already multiple sets of values defined for this ValueAnimator via more 3742794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * than one PropertyValuesHolder object, this method will set the values for the first 3752794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * of those objects.</p> 3762794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3772794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 3782794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 3792794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public void setFloatValues(float... values) { 3802794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (values == null || values.length == 0) { 3812794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return; 38241f041d9986f8a5d45b6cb0b86e881c81a412168Chet Haase } 3832794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (mValues == null || mValues.length == 0) { 3842794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase setValues(new PropertyValuesHolder[]{PropertyValuesHolder.ofFloat("", values)}); 3852794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } else { 3862794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase PropertyValuesHolder valuesHolder = mValues[0]; 3872794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase valuesHolder.setFloatValues(values); 3882794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3892794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase // New property/values/target should cause re-initialization prior to starting 3902794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase mInitialized = false; 3912794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3922794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 3932794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 3942794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Sets the values to animate between for this animation. A single 3952794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 3962794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 3972794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 3982794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 3992794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 4002794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 4012794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>If there are already multiple sets of values defined for this ValueAnimator via more 4022794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * than one PropertyValuesHolder object, this method will set the values for the first 4032794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * of those objects.</p> 4042794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 4052794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>There should be a TypeEvaluator set on the ValueAnimator that knows how to interpolate 4062794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * between these value objects. ValueAnimator only knows how to interpolate between the 4072794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * primitive types specified in the other setValues() methods.</p> 4082794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 4092794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values The set of values to animate between. 4102794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 4112794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public void setObjectValues(Object... values) { 4122794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (values == null || values.length == 0) { 4132794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return; 4142794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 4152794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (mValues == null || mValues.length == 0) { 4162794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase setValues(new PropertyValuesHolder[]{PropertyValuesHolder.ofObject("", 4172794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase (TypeEvaluator)null, values)}); 4182794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } else { 4192794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase PropertyValuesHolder valuesHolder = mValues[0]; 4202794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase valuesHolder.setObjectValues(values); 4212794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 4222794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase // New property/values/target should cause re-initialization prior to starting 4232794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase mInitialized = false; 424a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 425a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 426a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 427a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Sets the values, per property, being animated between. This function is called internally 428a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * by the constructors of ValueAnimator that take a list of values. But an ValueAnimator can 429a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * be constructed without values and this method can be called to set the values manually 430a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * instead. 431a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 432a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param values The set of values, per property, being animated between. 433a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 434a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setValues(PropertyValuesHolder... values) { 435a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = values.length; 436a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues = values; 437a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValuesMap = new HashMap<String, PropertyValuesHolder>(numValues); 438a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 439a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder valuesHolder = (PropertyValuesHolder) values[i]; 440a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValuesMap.put(valuesHolder.getPropertyName(), valuesHolder); 441a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 4420e0590bf3cb32e73f423c0fe39a180d4b3c4343dChet Haase // New property/values/target should cause re-initialization prior to starting 4430e0590bf3cb32e73f423c0fe39a180d4b3c4343dChet Haase mInitialized = false; 444a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 445a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 446a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 447a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Returns the values that this ValueAnimator animates between. These values are stored in 448a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * PropertyValuesHolder objects, even if the ValueAnimator was created with a simple list 449a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of value objects instead. 450a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 451a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return PropertyValuesHolder[] An array of PropertyValuesHolder objects which hold the 452a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * values, per property, that define the animation. 453a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 454a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public PropertyValuesHolder[] getValues() { 455a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mValues; 456a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 457a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 458a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 459a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This function is called immediately before processing the first animation 460a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frame of an animation. If there is a nonzero <code>startDelay</code>, the 461a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function is called after that delay ends. 462a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * It takes care of the final initialization steps for the 463a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation. 464a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 465a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>Overrides of this method should call the superclass method to ensure 466a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * that internal mechanisms for the animation are set up correctly.</p> 467a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 468a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase void initAnimation() { 469a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (!mInitialized) { 470a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = mValues.length; 471a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 472a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues[i].init(); 473a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 474a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mInitialized = true; 475a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 476a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 477a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 478a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 479a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 4802794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Sets the length of the animation. The default duration is 300 milliseconds. 481a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 48227c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase * @param duration The length of the animation, in milliseconds. This value cannot 48327c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase * be negative. 4842794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return ValueAnimator The object called with setDuration(). This return 4852794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value makes it easier to compose statements together that construct and then set the 4862794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * duration, as in <code>ValueAnimator.ofInt(0, 10).setDuration(500).start()</code>. 487a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 4882794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public ValueAnimator setDuration(long duration) { 48927c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase if (duration < 0) { 49027c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase throw new IllegalArgumentException("Animators cannot have negative duration: " + 49127c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase duration); 49227c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase } 493a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mDuration = duration; 4942794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return this; 495a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 496a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 497a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 4982794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Gets the length of the animation. The default duration is 300 milliseconds. 499a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 500a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return The length of the animation, in milliseconds. 501a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 502a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public long getDuration() { 503a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mDuration; 504a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 505a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 506a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 507a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Sets the position of the animation to the specified point in time. This time should 508a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * be between 0 and the total duration of the animation, including any repetition. If 509a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the animation has not yet been started, then it will not advance forward after it is 510a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * set to this time; it will simply set the time to this value and perform any appropriate 511a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * actions based on that time. If the animation is already running, then setCurrentPlayTime() 512a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * will set the current playing time to this value and continue playing from that point. 513a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 514a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param playTime The time, in milliseconds, to which the animation is advanced or rewound. 515a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 516a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setCurrentPlayTime(long playTime) { 517a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase initAnimation(); 518a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long currentTime = AnimationUtils.currentAnimationTimeMillis(); 519a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mPlayingState != RUNNING) { 520a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mSeekTime = playTime; 521a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = SEEKED; 522a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 523a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime - playTime; 524a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase animationFrame(currentTime); 525a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 526a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 527a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 528a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Gets the current position of the animation in time, which is equal to the current 529a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * time minus the time that the animation started. An animation that is not yet started will 530a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * return a value of zero. 531a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 532a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return The current position in time of the animation. 533a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 534a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public long getCurrentPlayTime() { 535a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (!mInitialized || mPlayingState == STOPPED) { 536a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return 0; 537a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 538a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return AnimationUtils.currentAnimationTimeMillis() - mStartTime; 539a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 540a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 541a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 542a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This custom, static handler handles the timing pulse that is shared by 543a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * all active animations. This approach ensures that the setting of animation 544a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * values will happen on the UI thread and that all animations will share 545a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the same times for calculating their values, which makes synchronizing 546a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animations possible. 547a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 548a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 549a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static class AnimationHandler extends Handler { 550a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 551a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * There are only two messages that we care about: ANIMATION_START and 552a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * ANIMATION_FRAME. The START message is sent when an animation's start() 553a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * method is called. It cannot start synchronously when start() is called 554a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * because the call may be on the wrong thread, and it would also not be 555a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * synchronized with other animations because it would not start on a common 556a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * timing pulse. So each animation sends a START message to the handler, which 557a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * causes the handler to place the animation on the active animations queue and 558a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * start processing frames for that animation. 559a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The FRAME message is the one that is sent over and over while there are any 560a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * active animations to process. 561a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 562a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 563a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void handleMessage(Message msg) { 564a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase boolean callAgain = true; 565e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ArrayList<ValueAnimator> animations = sAnimations.get(); 566e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ArrayList<ValueAnimator> delayedAnims = sDelayedAnims.get(); 567a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase switch (msg.what) { 568a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // TODO: should we avoid sending frame message when starting if we 569a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // were already running? 570a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase case ANIMATION_START: 571e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ArrayList<ValueAnimator> pendingAnimations = sPendingAnimations.get(); 572e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase if (animations.size() > 0 || delayedAnims.size() > 0) { 573a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase callAgain = false; 574a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 575a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // pendingAnims holds any animations that have requested to be started 576a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // We're going to clear sPendingAnimations, but starting animation may 577a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // cause more to be added to the pending list (for example, if one animation 578a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // starting triggers another starting). So we loop until sPendingAnimations 579a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // is empty. 580e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase while (pendingAnimations.size() > 0) { 581a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<ValueAnimator> pendingCopy = 582e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase (ArrayList<ValueAnimator>) pendingAnimations.clone(); 583e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase pendingAnimations.clear(); 584a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int count = pendingCopy.size(); 585a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < count; ++i) { 586a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ValueAnimator anim = pendingCopy.get(i); 587a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // If the animation has a startDelay, place it on the delayed list 588e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase if (anim.mStartDelay == 0) { 589a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.startAnimation(); 590a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 591e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase delayedAnims.add(anim); 592a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 593a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 594a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 595a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // fall through to process first frame of new animations 596a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase case ANIMATION_FRAME: 597a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // currentTime holds the common time for all animations processed 598a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // during this frame 599a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long currentTime = AnimationUtils.currentAnimationTimeMillis(); 600e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ArrayList<ValueAnimator> readyAnims = sReadyAnims.get(); 601e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ArrayList<ValueAnimator> endingAnims = sEndingAnims.get(); 602a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 603a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // First, process animations currently sitting on the delayed queue, adding 604a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // them to the active animations if they are ready 605e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase int numDelayedAnims = delayedAnims.size(); 606a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numDelayedAnims; ++i) { 607e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ValueAnimator anim = delayedAnims.get(i); 608a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (anim.delayedAnimationFrame(currentTime)) { 609e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase readyAnims.add(anim); 610a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 611a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 612e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase int numReadyAnims = readyAnims.size(); 613a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (numReadyAnims > 0) { 614a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numReadyAnims; ++i) { 615e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ValueAnimator anim = readyAnims.get(i); 616a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.startAnimation(); 617e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase delayedAnims.remove(anim); 618a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 619e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase readyAnims.clear(); 620a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 621a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 622a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Now process all active animations. The return value from animationFrame() 623a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // tells the handler whether it should now be ended 624e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase int numAnims = animations.size(); 625e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase int i = 0; 626e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase while (i < numAnims) { 627e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ValueAnimator anim = animations.get(i); 628a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (anim.animationFrame(currentTime)) { 629e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase endingAnims.add(anim); 630a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 631e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase if (animations.size() == numAnims) { 632e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase ++i; 633e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase } else { 634e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // An animation might be canceled or ended by client code 635e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // during the animation frame. Check to see if this happened by 636e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // seeing whether the current index is the same as it was before 637e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // calling animationFrame(). Another approach would be to copy 638e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // animations to a temporary list and process that list instead, 639e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // but that entails garbage and processing overhead that would 640e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // be nice to avoid. 641e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase --numAnims; 642e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase endingAnims.remove(anim); 643e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase } 644a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 645e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase if (endingAnims.size() > 0) { 646e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase for (i = 0; i < endingAnims.size(); ++i) { 647e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase endingAnims.get(i).endAnimation(); 648a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 649e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase endingAnims.clear(); 650a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 651a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 652a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // If there are still active or delayed animations, call the handler again 653a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // after the frameDelay 654e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase if (callAgain && (!animations.isEmpty() || !delayedAnims.isEmpty())) { 65551b3227c2e08143c2e3dde9d51ae5b6fff36693cChet Haase sendEmptyMessageDelayed(ANIMATION_FRAME, Math.max(0, sFrameDelay - 65651b3227c2e08143c2e3dde9d51ae5b6fff36693cChet Haase (AnimationUtils.currentAnimationTimeMillis() - currentTime))); 657a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 658a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase break; 659a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 660a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 661a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 662a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 663a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 664a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, to delay starting the animation after 665a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link #start()} is called. 666a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 667a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return the number of milliseconds to delay running the animation 668a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 669a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public long getStartDelay() { 670a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mStartDelay; 671a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 672a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 673a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 674a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, to delay starting the animation after 675a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link #start()} is called. 676a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 677a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param startDelay The amount of the delay, in milliseconds 678a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 679a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setStartDelay(long startDelay) { 680a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase this.mStartDelay = startDelay; 681a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 682a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 683a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 684a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, between each frame of the animation. This is a 685a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * requested time that the animation will attempt to honor, but the actual delay between 686a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frames may be different, depending on system load and capabilities. This is a static 687a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function because the same delay will be applied to all animations, since they are all 688a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * run off of a single timing loop. 689a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 690a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return the requested time between frames, in milliseconds 691a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 692a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static long getFrameDelay() { 693a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return sFrameDelay; 694a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 695a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 696a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 697a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, between each frame of the animation. This is a 698a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * requested time that the animation will attempt to honor, but the actual delay between 699a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frames may be different, depending on system load and capabilities. This is a static 700a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function because the same delay will be applied to all animations, since they are all 701a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * run off of a single timing loop. 702a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 703a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param frameDelay the requested time between frames, in milliseconds 704a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 705a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static void setFrameDelay(long frameDelay) { 706a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sFrameDelay = frameDelay; 707a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 708a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 709a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 710a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The most recent value calculated by this <code>ValueAnimator</code> when there is just one 711a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * property being animated. This value is only sensible while the animation is running. The main 712a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * purpose for this read-only property is to retrieve the value from the <code>ValueAnimator</code> 713a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * during a call to {@link AnimatorUpdateListener#onAnimationUpdate(ValueAnimator)}, which 714a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is called during each animation frame, immediately after the value is calculated. 715a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 716a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return animatedValue The value most recently calculated by this <code>ValueAnimator</code> for 717a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the single property being animated. If there are several properties being animated 718a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * (specified by several PropertyValuesHolder objects in the constructor), this function 719a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * returns the animated value for the first of those objects. 720a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 721a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public Object getAnimatedValue() { 722a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mValues != null && mValues.length > 0) { 723a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mValues[0].getAnimatedValue(); 724a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 725a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Shouldn't get here; should always have values unless ValueAnimator was set up wrong 726a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return null; 727a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 728a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 729a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 730a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The most recent value calculated by this <code>ValueAnimator</code> for <code>propertyName</code>. 731a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The main purpose for this read-only property is to retrieve the value from the 732a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <code>ValueAnimator</code> during a call to 733a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link AnimatorUpdateListener#onAnimationUpdate(ValueAnimator)}, which 734a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is called during each animation frame, immediately after the value is calculated. 735a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 736a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return animatedValue The value most recently calculated for the named property 737a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * by this <code>ValueAnimator</code>. 738a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 739a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public Object getAnimatedValue(String propertyName) { 740a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder valuesHolder = mValuesMap.get(propertyName); 741a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (valuesHolder != null) { 742a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return valuesHolder.getAnimatedValue(); 743a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 744a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // At least avoid crashing if called with bogus propertyName 745a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return null; 746a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 747a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 748a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 749a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 750a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Sets how many times the animation should be repeated. If the repeat 751a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * count is 0, the animation is never repeated. If the repeat count is 752a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * greater than 0 or {@link #INFINITE}, the repeat mode will be taken 753a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * into account. The repeat count is 0 by default. 754a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 755a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param value the number of times the animation should be repeated 756a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 757a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setRepeatCount(int value) { 758a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mRepeatCount = value; 759a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 760a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 761a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Defines how many times the animation should repeat. The default value 762a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is 0. 763a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 764a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return the number of times the animation should repeat, or {@link #INFINITE} 765a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 766a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public int getRepeatCount() { 767a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mRepeatCount; 768a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 769a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 770a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 771a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Defines what this animation should do when it reaches the end. This 772a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * setting is applied only when the repeat count is either greater than 773a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 0 or {@link #INFINITE}. Defaults to {@link #RESTART}. 774a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 775a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param value {@link #RESTART} or {@link #REVERSE} 776a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 777a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setRepeatMode(int value) { 778a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mRepeatMode = value; 779a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 780a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 781a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 782a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Defines what this animation should do when it reaches the end. 783a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 784a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return either one of {@link #REVERSE} or {@link #RESTART} 785a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 786a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public int getRepeatMode() { 787a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mRepeatMode; 788a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 789a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 790a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 791a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Adds a listener to the set of listeners that are sent update events through the life of 792a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * an animation. This method is called on all listeners for every frame of the animation, 793a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * after the values for the animation have been calculated. 794a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 795a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param listener the listener to be added to the current set of listeners for this animation. 796a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 797a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void addUpdateListener(AnimatorUpdateListener listener) { 798a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners == null) { 799a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners = new ArrayList<AnimatorUpdateListener>(); 800a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 801a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners.add(listener); 802a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 803a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 804a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 8053060421045d4d9e411797f91bb509824b03e33fbJim Miller * Removes all listeners from the set listening to frame updates for this animation. 8063060421045d4d9e411797f91bb509824b03e33fbJim Miller */ 8073060421045d4d9e411797f91bb509824b03e33fbJim Miller public void removeAllUpdateListeners() { 8083060421045d4d9e411797f91bb509824b03e33fbJim Miller if (mUpdateListeners == null) { 8093060421045d4d9e411797f91bb509824b03e33fbJim Miller return; 8103060421045d4d9e411797f91bb509824b03e33fbJim Miller } 8113060421045d4d9e411797f91bb509824b03e33fbJim Miller mUpdateListeners.clear(); 8123060421045d4d9e411797f91bb509824b03e33fbJim Miller mUpdateListeners = null; 8133060421045d4d9e411797f91bb509824b03e33fbJim Miller } 8143060421045d4d9e411797f91bb509824b03e33fbJim Miller 8153060421045d4d9e411797f91bb509824b03e33fbJim Miller /** 816a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Removes a listener from the set listening to frame updates for this animation. 817a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 818a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param listener the listener to be removed from the current set of update listeners 819a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * for this animation. 820a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 821a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void removeUpdateListener(AnimatorUpdateListener listener) { 822a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners == null) { 823a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return; 824a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 825a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners.remove(listener); 826a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners.size() == 0) { 827a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners = null; 828a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 829a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 830a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 831a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 832a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 833a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The time interpolator used in calculating the elapsed fraction of this animation. The 834a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * interpolator determines whether the animation runs with linear or non-linear motion, 835a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * such as acceleration and deceleration. The default value is 836a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link android.view.animation.AccelerateDecelerateInterpolator} 837a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 83827c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase * @param value the interpolator to be used by this animation. A value of <code>null</code> 83927c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase * will result in linear interpolation. 840a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 841a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 842e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase public void setInterpolator(TimeInterpolator value) { 843a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (value != null) { 844a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mInterpolator = value; 84527c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase } else { 84627c1d4debb3848f5accd5673fffeeacad3e61648Chet Haase mInterpolator = new LinearInterpolator(); 847a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 848a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 849a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 850a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 851a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Returns the timing interpolator that this ValueAnimator uses. 852a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 853a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return The timing interpolator for this ValueAnimator. 854a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 855e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase public TimeInterpolator getInterpolator() { 856a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mInterpolator; 857a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 858a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 859a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 860a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The type evaluator to be used when calculating the animated values of this animation. 861a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The system will automatically assign a float, int, or double evaluator based on the type 862a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of <code>startValue</code> and <code>endValue</code> in the constructor. But if these values 863a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * are not one of these primitive types, or if different evaluation is desired (such as is 864a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * necessary with int values that represent colors), a custom evaluator needs to be assigned. 865a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * For example, when running an animation on color values, the {@link RGBEvaluator} 866a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * should be used to get correct RGB color interpolation. 867a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 868a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>If this ValueAnimator has only one set of values being animated between, this evaluator 869a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * will be used for that set. If there are several sets of values being animated, which is 870a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the case if PropertyValuesHOlder objects were set on the ValueAnimator, then the evaluator 871a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is assigned just to the first PropertyValuesHolder object.</p> 872a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 873a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param value the evaluator to be used this animation 874a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 875a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setEvaluator(TypeEvaluator value) { 876a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (value != null && mValues != null && mValues.length > 0) { 877a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues[0].setEvaluator(value); 878a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 879a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 880a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 881a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 882a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Start the animation playing. This version of start() takes a boolean flag that indicates 883a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * whether the animation should play in reverse. The flag is usually false, but may be set 8842970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * to true if called from the reverse() method. 8852970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * 8862970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * <p>The animation started by calling this method will be run on the thread that called 8872970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * this method. This thread should have a Looper on it (a runtime exception will be thrown if 8882970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * this is not the case). Also, if the animation will animate 8892970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * properties of objects in the view hierarchy, then the calling thread should be the UI 8902970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * thread for that view hierarchy.</p> 891a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 892a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param playBackwards Whether the ValueAnimator should start playing in reverse. 893a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 894a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private void start(boolean playBackwards) { 8952970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase if (Looper.myLooper() == null) { 8962970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase throw new AndroidRuntimeException("Animators may only be run on Looper threads"); 8973060421045d4d9e411797f91bb509824b03e33fbJim Miller } 8982970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase mPlayingBackwards = playBackwards; 8992970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase if (mStartDelay == 0) { 900b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase if (mListeners != null) { 901b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase ArrayList<AnimatorListener> tmpListeners = 902b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase (ArrayList<AnimatorListener>) mListeners.clone(); 9037c608f25d494c8a0a671e7373efbb47ca635367eChet Haase int numListeners = tmpListeners.size(); 9047c608f25d494c8a0a671e7373efbb47ca635367eChet Haase for (int i = 0; i < numListeners; ++i) { 9057c608f25d494c8a0a671e7373efbb47ca635367eChet Haase tmpListeners.get(i).onAnimationStart(this); 906b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase } 907b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase } 908a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // This sets the initial value of the animation, prior to actually starting it running 909a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase setCurrentPlayTime(getCurrentPlayTime()); 910a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 9115c13d89c1332fcc499379b9064b891187b75ca32Chet Haase mCurrentIteration = 0; 912a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = STOPPED; 913a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartedDelay = false; 914e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase sPendingAnimations.get().add(this); 915e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase AnimationHandler animationHandler = sAnimationHandler.get(); 916e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase if (animationHandler == null) { 917e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase animationHandler = new AnimationHandler(); 918e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase sAnimationHandler.set(animationHandler); 919a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 920e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase animationHandler.sendEmptyMessage(ANIMATION_START); 921a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 922a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 923a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 924a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void start() { 925a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase start(false); 926a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 927a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 928a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 929a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void cancel() { 930a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mListeners != null) { 931a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<AnimatorListener> tmpListeners = 932a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase (ArrayList<AnimatorListener>) mListeners.clone(); 933a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (AnimatorListener listener : tmpListeners) { 934a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase listener.onAnimationCancel(this); 935a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 936a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 9372970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase // Only cancel if the animation is actually running or has been started and is about 9382970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase // to run 9392970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase if (mPlayingState != STOPPED || sPendingAnimations.get().contains(this) || 9402970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase sDelayedAnims.get().contains(this)) { 941e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase endAnimation(); 9422970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase } 943a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 944a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 945a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 946a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void end() { 947e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase if (!sAnimations.get().contains(this) && !sPendingAnimations.get().contains(this)) { 948a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Special case if the animation has not yet started; get it ready for ending 949a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartedDelay = false; 950e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase startAnimation(); 951e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase } 952e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // The final value set on the target varies, depending on whether the animation 953e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // was supposed to repeat an odd number of times 954e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase if (mRepeatCount > 0 && (mRepeatCount & 0x01) == 1) { 955e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase animateValue(0f); 956e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase } else { 957e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase animateValue(1f); 958a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 959e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase endAnimation(); 960a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 961a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 962a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 963a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public boolean isRunning() { 964e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase return (mPlayingState == RUNNING); 965a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 966a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 967a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 968a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Plays the ValueAnimator in reverse. If the animation is already running, 969a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * it will stop itself and play backwards from the point reached when reverse was called. 970a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * If the animation is not currently running, then it will start from the end and 971a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * play backwards. This behavior is only set for the current animation; future playing 972a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of the animation will use the default behavior of playing forward. 973a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 974a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void reverse() { 975a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingBackwards = !mPlayingBackwards; 976a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mPlayingState == RUNNING) { 977a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long currentTime = AnimationUtils.currentAnimationTimeMillis(); 978a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long currentPlayTime = currentTime - mStartTime; 979a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long timeLeft = mDuration - currentPlayTime; 980a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime - timeLeft; 981a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 982a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase start(true); 983a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 984a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 985a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 986a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 987a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Called internally to end an animation by removing it from the animations list. Must be 988a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * called on the UI thread. 989a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 990a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private void endAnimation() { 991e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase sAnimations.get().remove(this); 992e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase sPendingAnimations.get().remove(this); 993e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase sDelayedAnims.get().remove(this); 994a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = STOPPED; 995a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mListeners != null) { 996a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<AnimatorListener> tmpListeners = 997a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase (ArrayList<AnimatorListener>) mListeners.clone(); 9987c608f25d494c8a0a671e7373efbb47ca635367eChet Haase int numListeners = tmpListeners.size(); 9997c608f25d494c8a0a671e7373efbb47ca635367eChet Haase for (int i = 0; i < numListeners; ++i) { 10007c608f25d494c8a0a671e7373efbb47ca635367eChet Haase tmpListeners.get(i).onAnimationEnd(this); 1001a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1002a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1003a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1004a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1005a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1006a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Called internally to start an animation by adding it to the active animations list. Must be 1007a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * called on the UI thread. 1008a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1009a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private void startAnimation() { 1010a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase initAnimation(); 1011e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase sAnimations.get().add(this); 1012b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase if (mStartDelay > 0 && mListeners != null) { 1013b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase // Listeners were already notified in start() if startDelay is 0; this is 1014b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase // just for delayed animations 1015a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<AnimatorListener> tmpListeners = 1016a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase (ArrayList<AnimatorListener>) mListeners.clone(); 10177c608f25d494c8a0a671e7373efbb47ca635367eChet Haase int numListeners = tmpListeners.size(); 10187c608f25d494c8a0a671e7373efbb47ca635367eChet Haase for (int i = 0; i < numListeners; ++i) { 10197c608f25d494c8a0a671e7373efbb47ca635367eChet Haase tmpListeners.get(i).onAnimationStart(this); 1020a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1021a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1022a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1023a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1024a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1025a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Internal function called to process an animation frame on an animation that is currently 1026a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * sleeping through its <code>startDelay</code> phase. The return value indicates whether it 1027a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * should be woken up and put on the active animations queue. 1028a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 1029a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param currentTime The current animation time, used to calculate whether the animation 1030a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * has exceeded its <code>startDelay</code> and should be started. 1031a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return True if the animation's <code>startDelay</code> has been exceeded and the animation 1032a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * should be added to the set of active animations. 1033a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1034a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private boolean delayedAnimationFrame(long currentTime) { 1035a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (!mStartedDelay) { 1036a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartedDelay = true; 1037a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mDelayStartTime = currentTime; 1038a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 1039a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long deltaTime = currentTime - mDelayStartTime; 1040a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (deltaTime > mStartDelay) { 1041a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // startDelay ended - start the anim and record the 1042a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // mStartTime appropriately 1043a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime - (deltaTime - mStartDelay); 1044a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = RUNNING; 1045a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return true; 1046a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1047a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1048a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return false; 1049a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1050a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1051a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1052a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This internal function processes a single animation frame for a given animation. The 1053a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * currentTime parameter is the timing pulse sent by the handler, used to calculate the 1054a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * elapsed duration, and therefore 1055a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the elapsed fraction, of the animation. The return value indicates whether the animation 1056a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * should be ended (which happens when the elapsed time of the animation exceeds the 1057a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation's duration, including the repeatCount). 1058a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 1059a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param currentTime The current time, as tracked by the static timing handler 1060a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return true if the animation's duration, including any repetitions due to 1061a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <code>repeatCount</code> has been exceeded and the animation should be ended. 1062a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1063051d35e41f7b21cd8a1608bdce10cf70952c6be4Chet Haase boolean animationFrame(long currentTime) { 1064a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase boolean done = false; 1065a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1066a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mPlayingState == STOPPED) { 1067a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = RUNNING; 1068a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mSeekTime < 0) { 1069a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime; 1070a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 1071a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime - mSeekTime; 1072a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Now that we're playing, reset the seek time 1073a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mSeekTime = -1; 1074a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1075a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1076a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase switch (mPlayingState) { 1077a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase case RUNNING: 1078a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase case SEEKED: 107970d4ba15b1f0c1133c5aabc86de828b41e482fffChet Haase float fraction = mDuration > 0 ? (float)(currentTime - mStartTime) / mDuration : 1f; 1080a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (fraction >= 1f) { 1081a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mCurrentIteration < mRepeatCount || mRepeatCount == INFINITE) { 1082a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Time to repeat 1083a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mListeners != null) { 10847c608f25d494c8a0a671e7373efbb47ca635367eChet Haase int numListeners = mListeners.size(); 10857c608f25d494c8a0a671e7373efbb47ca635367eChet Haase for (int i = 0; i < numListeners; ++i) { 10867c608f25d494c8a0a671e7373efbb47ca635367eChet Haase mListeners.get(i).onAnimationRepeat(this); 1087a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1088a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1089a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mRepeatMode == REVERSE) { 1090a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingBackwards = mPlayingBackwards ? false : true; 1091a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1092730666858692ea396f5ad779654b5d86ff90b6caChet Haase mCurrentIteration += (int)fraction; 1093730666858692ea396f5ad779654b5d86ff90b6caChet Haase fraction = fraction % 1f; 1094a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime += mDuration; 1095a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 1096a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase done = true; 1097a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase fraction = Math.min(fraction, 1.0f); 1098a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1099a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1100a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mPlayingBackwards) { 1101a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase fraction = 1f - fraction; 1102a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1103a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase animateValue(fraction); 1104a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase break; 1105a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1106a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1107a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return done; 1108a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1109a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1110a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1111a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This method is called with the elapsed fraction of the animation during every 1112a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation frame. This function turns the elapsed fraction into an interpolated fraction 1113a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * and then into an animated value (from the evaluator. The function is called mostly during 1114a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation updates, but it is also called when the <code>end()</code> 1115a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function is called, to set the final value on the property. 1116a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 1117a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>Overrides of this method must call the superclass to perform the calculation 1118a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of the animated value.</p> 1119a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 1120a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param fraction The elapsed fraction of the animation. 1121a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1122a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase void animateValue(float fraction) { 1123a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase fraction = mInterpolator.getInterpolation(fraction); 1124a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = mValues.length; 1125a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 1126a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues[i].calculateValue(fraction); 1127a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1128a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners != null) { 1129a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numListeners = mUpdateListeners.size(); 1130a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numListeners; ++i) { 1131a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners.get(i).onAnimationUpdate(this); 1132a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1133a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1134a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1135a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1136a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 1137a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public ValueAnimator clone() { 1138a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase final ValueAnimator anim = (ValueAnimator) super.clone(); 1139a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners != null) { 1140a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<AnimatorUpdateListener> oldListeners = mUpdateListeners; 1141a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mUpdateListeners = new ArrayList<AnimatorUpdateListener>(); 1142a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numListeners = oldListeners.size(); 1143a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numListeners; ++i) { 1144a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mUpdateListeners.add(oldListeners.get(i)); 1145a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1146a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1147a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mSeekTime = -1; 1148a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mPlayingBackwards = false; 1149a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mCurrentIteration = 0; 1150a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mInitialized = false; 1151a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mPlayingState = STOPPED; 1152a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mStartedDelay = false; 1153a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder[] oldValues = mValues; 1154a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (oldValues != null) { 1155a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = oldValues.length; 1156a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mValues = new PropertyValuesHolder[numValues]; 1157a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 1158a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mValues[i] = oldValues[i].clone(); 1159a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1160a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mValuesMap = new HashMap<String, PropertyValuesHolder>(numValues); 1161a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 1162a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder valuesHolder = mValues[i]; 1163a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mValuesMap.put(valuesHolder.getPropertyName(), valuesHolder); 1164a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1165a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1166a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return anim; 1167a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1168a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1169a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1170a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Implementors of this interface can add themselves as update listeners 1171a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * to an <code>ValueAnimator</code> instance to receive callbacks on every animation 1172a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frame, after the current frame's values have been calculated for that 1173a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <code>ValueAnimator</code>. 1174a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1175a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static interface AnimatorUpdateListener { 1176a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1177a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>Notifies the occurrence of another frame of the animation.</p> 1178a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 1179a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param animation The animation which was repeated. 1180a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1181a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase void onAnimationUpdate(ValueAnimator animation); 1182a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1183a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1184599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick 1185599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick /** 1186599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * Return the number of animations currently running. 1187599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * 1188599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * Used by StrictMode internally to annotate violations. Only 1189599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * called on the main thread. 1190599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * 1191599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * @hide 1192599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick */ 1193599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick public static int getCurrentAnimationsCount() { 1194e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase return sAnimations.get().size(); 1195599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick } 1196599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick} 1197