ValueAnimator.java revision e2ab7ccd385cdb6517955c719e1d2b49771bedb6
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; 25a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 26a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport java.util.ArrayList; 27a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport java.util.HashMap; 28a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 29a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase/** 30a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This class provides a simple timing engine for running animations 31a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * which calculate animated values and set them on target objects. 32a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 33a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>There is a single timing pulse that all animations use. It runs in a 34a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * custom handler to ensure that property changes happen on the UI thread.</p> 35a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 36a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>By default, ValueAnimator uses non-linear time interpolation, via the 37a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link AccelerateDecelerateInterpolator} class, which accelerates into and decelerates 38a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * out of an animation. This behavior can be changed by calling 39e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase * {@link ValueAnimator#setInterpolator(TimeInterpolator)}.</p> 40a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 412794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haasepublic class ValueAnimator extends Animator { 42a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 43a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 44a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Internal constants 45a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 46a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 47a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /* 48a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The default amount of time in ms between animation frames 49a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 50608fc3cbed6062f29cd512c08aacb8c1632a8851Chet Haase private static final long DEFAULT_FRAME_DELAY = 10; 51a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 52a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 53a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Messages sent to timing handler: START is sent when an animation first begins, FRAME is sent 54a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * by the handler to itself to process the next animation frame 55a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 56a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final int ANIMATION_START = 0; 57a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final int ANIMATION_FRAME = 1; 58a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 59a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 60a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Values used with internal variable mPlayingState to indicate the current state of an 61a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation. 62a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 63a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final int STOPPED = 0; // Not yet playing 64a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final int RUNNING = 1; // Playing normally 65e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase private static final int SEEKED = 2; // Seeked to some time value 66a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 67a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 68a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Internal variables 69a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * NOTE: This object implements the clone() method, making a deep copy of any referenced 70a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * objects. As other non-trivial fields are added to this class, make sure to add logic 71a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * to clone() to make deep copies of them. 72a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 73a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 74a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The first time that the animation's animateFrame() method is called. This time is used to 75a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // determine elapsed time (and therefore the elapsed fraction) in subsequent calls 76a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // to animateFrame() 77a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private long mStartTime; 78a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 79a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 80a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Set when setCurrentPlayTime() is called. If negative, animation is not currently seeked 81a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * to a value. 82a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 83a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private long mSeekTime = -1; 84a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 85e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase // TODO: We access the following ThreadLocal variables often, some of them on every update. 86e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase // If ThreadLocal access is significantly expensive, we may want to put all of these 87e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase // fields into a structure sot hat we just access ThreadLocal once to get the reference 88e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase // to that structure, then access the structure directly for each field. 89e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase 90a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The static sAnimationHandler processes the internal timing loop on which all animations 91a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // are based 92e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase private static ThreadLocal<AnimationHandler> sAnimationHandler = 93e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase new ThreadLocal<AnimationHandler>(); 94e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase 95e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase // The per-thread list of all active animations 96e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase private static final ThreadLocal<ArrayList<ValueAnimator>> sAnimations = 97e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase new ThreadLocal<ArrayList<ValueAnimator>>() { 98e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase @Override 99e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase protected ArrayList<ValueAnimator> initialValue() { 100e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase return new ArrayList<ValueAnimator>(); 101e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase } 102e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase }; 103e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase 104e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase // The per-thread set of animations to be started on the next animation frame 105e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase private static final ThreadLocal<ArrayList<ValueAnimator>> sPendingAnimations = 106e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase new ThreadLocal<ArrayList<ValueAnimator>>() { 107e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase @Override 108e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase protected ArrayList<ValueAnimator> initialValue() { 109e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase return new ArrayList<ValueAnimator>(); 110e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase } 111e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase }; 112e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase 113e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase /** 114e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase * Internal per-thread collections used to avoid set collisions as animations start and end 115e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase * while being processed. 116e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase */ 117e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase private static final ThreadLocal<ArrayList<ValueAnimator>> sDelayedAnims = 118e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase new ThreadLocal<ArrayList<ValueAnimator>>() { 119e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase @Override 120e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase protected ArrayList<ValueAnimator> initialValue() { 121e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase return new ArrayList<ValueAnimator>(); 122e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase } 123e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase }; 124a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 125e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase private static final ThreadLocal<ArrayList<ValueAnimator>> sEndingAnims = 126e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase new ThreadLocal<ArrayList<ValueAnimator>>() { 127e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase @Override 128e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase protected ArrayList<ValueAnimator> initialValue() { 129e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase return new ArrayList<ValueAnimator>(); 130e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase } 131e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase }; 132a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 133e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase private static final ThreadLocal<ArrayList<ValueAnimator>> sReadyAnims = 134e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase new ThreadLocal<ArrayList<ValueAnimator>>() { 135e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase @Override 136e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase protected ArrayList<ValueAnimator> initialValue() { 137e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase return new ArrayList<ValueAnimator>(); 138e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase } 139e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase }; 140a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 141a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The time interpolator to be used if none is set on the animation 142e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase private static final TimeInterpolator sDefaultInterpolator = 143e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase new AccelerateDecelerateInterpolator(); 144a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 145a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // type evaluators for the three primitive types handled by this implementation 146a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final TypeEvaluator sIntEvaluator = new IntEvaluator(); 147a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final TypeEvaluator sFloatEvaluator = new FloatEvaluator(); 148a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final TypeEvaluator sDoubleEvaluator = new DoubleEvaluator(); 149a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 150a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 151a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Used to indicate whether the animation is currently playing in reverse. This causes the 152a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * elapsed fraction to be inverted to calculate the appropriate values. 153a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 154a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private boolean mPlayingBackwards = false; 155a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 156a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 157a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This variable tracks the current iteration that is playing. When mCurrentIteration exceeds the 158a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * repeatCount (if repeatCount!=INFINITE), the animation ends 159a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 160a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private int mCurrentIteration = 0; 161a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 162a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 163a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Tracks whether a startDelay'd animation has begun playing through the startDelay. 164a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 165a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private boolean mStartedDelay = false; 166a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 167a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 168a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Tracks the time at which the animation began playing through its startDelay. This is 169a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * different from the mStartTime variable, which is used to track when the animation became 170a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * active (which is when the startDelay expired and the animation was added to the active 171a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animations list). 172a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 173a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private long mDelayStartTime; 174a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 175a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 176a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Flag that represents the current state of the animation. Used to figure out when to start 177a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * an animation (if state == STOPPED). Also used to end an animation that 178a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * has been cancel()'d or end()'d since the last animation frame. Possible values are 179e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase * STOPPED, RUNNING, SEEKED. 180a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 181a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private int mPlayingState = STOPPED; 182a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 183a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 184a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Flag that denotes whether the animation is set up and ready to go. Used to 185a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * set up animation that has not yet been started. 186a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 187a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase boolean mInitialized = false; 188a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 189a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // 190a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Backing variables 191a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // 192a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 193a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // How long the animation should last in ms 1942794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase private long mDuration = 300; 195a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 196a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The amount of time in ms to delay starting the animation after start() is called 197a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private long mStartDelay = 0; 198a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 199a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The number of milliseconds between animation frames 200a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static long sFrameDelay = DEFAULT_FRAME_DELAY; 201a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 202a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The number of times the animation will repeat. The default is 0, which means the animation 203a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // will play only once 204a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private int mRepeatCount = 0; 205a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 206a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 207a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The type of repetition that will occur when repeatMode is nonzero. RESTART means the 208a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation will start from the beginning on every new cycle. REVERSE means the animation 209a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * will reverse directions on each iteration. 210a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 211a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private int mRepeatMode = RESTART; 212a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 213a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 214a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The time interpolator to be used. The elapsed fraction of the animation will be passed 215a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * through this interpolator to calculate the interpolated fraction, which is then used to 216a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * calculate the animated values. 217a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 218e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase private TimeInterpolator mInterpolator = sDefaultInterpolator; 219a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 220a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 221a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The set of listeners to be sent events through the life of an animation. 222a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 223a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private ArrayList<AnimatorUpdateListener> mUpdateListeners = null; 224a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 225a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 226a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The property/value sets being animated. 227a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 228a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder[] mValues; 229a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 230a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 231a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * A hashmap of the PropertyValuesHolder objects. This map is used to lookup animated values 232a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * by property name during calls to getAnimatedValue(String). 233a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 234a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase HashMap<String, PropertyValuesHolder> mValuesMap; 235a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 236a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 237a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Public constants 238a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 239a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 240a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 241a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * When the animation reaches the end and <code>repeatCount</code> is INFINITE 242a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * or a positive value, the animation restarts from the beginning. 243a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 244a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static final int RESTART = 1; 245a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 246a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * When the animation reaches the end and <code>repeatCount</code> is INFINITE 247a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * or a positive value, the animation reverses direction on every iteration. 248a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 249a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static final int REVERSE = 2; 250a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 251a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This value used used with the {@link #setRepeatCount(int)} property to repeat 252a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the animation indefinitely. 253a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 254a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static final int INFINITE = -1; 255a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 256a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 257a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Creates a new ValueAnimator object. This default constructor is primarily for 2582794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * use internally; the factory methods which take parameters are more generally 259a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * useful. 260a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 261a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public ValueAnimator() { 262a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 263a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 264a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 2652794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Constructs and returns a ValueAnimator that animates between int values. A single 2662794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 2672794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 2682794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 2692794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 2702794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 271a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 2722794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 2732794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return A ValueAnimator object that is set up to animate between the given values. 27441f041d9986f8a5d45b6cb0b86e881c81a412168Chet Haase */ 2752794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public static ValueAnimator ofInt(int... values) { 2762794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ValueAnimator anim = new ValueAnimator(); 2772794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setIntValues(values); 2782794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return anim; 2792794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 2802794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 2812794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 2822794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Constructs and returns a ValueAnimator that animates between float values. A single 2832794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 2842794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 2852794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 2862794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 2872794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 2882794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 2892794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 2902794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return A ValueAnimator object that is set up to animate between the given values. 2912794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 2922794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public static ValueAnimator ofFloat(float... values) { 2932794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ValueAnimator anim = new ValueAnimator(); 2942794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setFloatValues(values); 2952794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return anim; 2962794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 2972794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 2982794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 2992794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Constructs and returns a ValueAnimator that animates between the values 3002794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * specified in the PropertyValuesHolder objects. 3012794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3022794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of PropertyValuesHolder objects whose values will be animated 3032794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * between over time. 3042794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return A ValueAnimator object that is set up to animate between the given values. 3052794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 3062794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public static ValueAnimator ofPropertyValuesHolder(PropertyValuesHolder... values) { 3072794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ValueAnimator anim = new ValueAnimator(); 3082794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setValues(values); 3092794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return anim; 3102794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3112794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 3122794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Constructs and returns a ValueAnimator that animates between Object values. A single 3132794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 3142794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 3152794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 3162794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 3172794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 3182794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3192794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>Since ValueAnimator does not know how to animate between arbitrary Objects, this 3202794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * factory method also takes a TypeEvaluator object that the ValueAnimator will use 3212794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * to perform that interpolation. 3222794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3232794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param evaluator A TypeEvaluator that will be called on each animation frame to 3242794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * provide the ncessry interpolation between the Object values to derive the animated 3252794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value. 3262794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 3272794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return A ValueAnimator object that is set up to animate between the given values. 3282794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 3292794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public static ValueAnimator ofObject(TypeEvaluator evaluator, Object... values) { 3302794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase ValueAnimator anim = new ValueAnimator(); 3312794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setObjectValues(values); 3322794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase anim.setEvaluator(evaluator); 3332794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return anim; 3342794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3352794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 3362794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 3372794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Sets int values that will be animated between. A single 3382794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 3392794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 3402794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 3412794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 3422794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 3432794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3442794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>If there are already multiple sets of values defined for this ValueAnimator via more 3452794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * than one PropertyValuesHolder object, this method will set the values for the first 3462794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * of those objects.</p> 3472794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3482794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 3492794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 3502794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public void setIntValues(int... values) { 3512794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (values == null || values.length == 0) { 3522794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return; 3532794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3542794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (mValues == null || mValues.length == 0) { 3552794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase setValues(new PropertyValuesHolder[]{PropertyValuesHolder.ofInt("", values)}); 3562794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } else { 3572794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase PropertyValuesHolder valuesHolder = mValues[0]; 3582794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase valuesHolder.setIntValues(values); 3592794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3602794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase // New property/values/target should cause re-initialization prior to starting 3612794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase mInitialized = false; 3622794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3632794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 3642794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 3652794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Sets float values that will be animated between. A single 3662794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 3672794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 3682794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 3692794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 3702794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 3712794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3722794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>If there are already multiple sets of values defined for this ValueAnimator via more 3732794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * than one PropertyValuesHolder object, this method will set the values for the first 3742794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * of those objects.</p> 3752794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 3762794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values A set of values that the animation will animate between over time. 3772794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 3782794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public void setFloatValues(float... values) { 3792794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (values == null || values.length == 0) { 3802794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return; 38141f041d9986f8a5d45b6cb0b86e881c81a412168Chet Haase } 3822794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (mValues == null || mValues.length == 0) { 3832794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase setValues(new PropertyValuesHolder[]{PropertyValuesHolder.ofFloat("", values)}); 3842794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } else { 3852794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase PropertyValuesHolder valuesHolder = mValues[0]; 3862794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase valuesHolder.setFloatValues(values); 3872794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3882794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase // New property/values/target should cause re-initialization prior to starting 3892794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase mInitialized = false; 3902794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 3912794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase 3922794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase /** 3932794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Sets the values to animate between for this animation. A single 3942794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value implies that that value is the one being animated to. However, this is not typically 3952794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * useful in a ValueAnimator object because there is no way for the object to determine the 3962794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * starting value for the animation (unlike ObjectAnimator, which can derive that value 3972794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * from the target object and property being animated). Therefore, there should typically 3982794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * be two or more values. 3992794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 4002794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>If there are already multiple sets of values defined for this ValueAnimator via more 4012794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * than one PropertyValuesHolder object, this method will set the values for the first 4022794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * of those objects.</p> 4032794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 4042794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * <p>There should be a TypeEvaluator set on the ValueAnimator that knows how to interpolate 4052794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * between these value objects. ValueAnimator only knows how to interpolate between the 4062794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * primitive types specified in the other setValues() methods.</p> 4072794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * 4082794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @param values The set of values to animate between. 4092794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase */ 4102794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public void setObjectValues(Object... values) { 4112794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (values == null || values.length == 0) { 4122794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return; 4132794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 4142794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase if (mValues == null || mValues.length == 0) { 4152794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase setValues(new PropertyValuesHolder[]{PropertyValuesHolder.ofObject("", 4162794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase (TypeEvaluator)null, values)}); 4172794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } else { 4182794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase PropertyValuesHolder valuesHolder = mValues[0]; 4192794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase valuesHolder.setObjectValues(values); 4202794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase } 4212794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase // New property/values/target should cause re-initialization prior to starting 4222794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase mInitialized = false; 423a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 424a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 425a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 426a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Sets the values, per property, being animated between. This function is called internally 427a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * by the constructors of ValueAnimator that take a list of values. But an ValueAnimator can 428a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * be constructed without values and this method can be called to set the values manually 429a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * instead. 430a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 431a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param values The set of values, per property, being animated between. 432a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 433a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setValues(PropertyValuesHolder... values) { 434a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = values.length; 435a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues = values; 436a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValuesMap = new HashMap<String, PropertyValuesHolder>(numValues); 437a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 438a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder valuesHolder = (PropertyValuesHolder) values[i]; 439a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValuesMap.put(valuesHolder.getPropertyName(), valuesHolder); 440a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 4410e0590bf3cb32e73f423c0fe39a180d4b3c4343dChet Haase // New property/values/target should cause re-initialization prior to starting 4420e0590bf3cb32e73f423c0fe39a180d4b3c4343dChet Haase mInitialized = false; 443a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 444a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 445a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 446a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Returns the values that this ValueAnimator animates between. These values are stored in 447a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * PropertyValuesHolder objects, even if the ValueAnimator was created with a simple list 448a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of value objects instead. 449a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 450a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return PropertyValuesHolder[] An array of PropertyValuesHolder objects which hold the 451a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * values, per property, that define the animation. 452a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 453a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public PropertyValuesHolder[] getValues() { 454a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mValues; 455a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 456a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 457a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 458a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This function is called immediately before processing the first animation 459a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frame of an animation. If there is a nonzero <code>startDelay</code>, the 460a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function is called after that delay ends. 461a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * It takes care of the final initialization steps for the 462a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation. 463a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 464a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>Overrides of this method should call the superclass method to ensure 465a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * that internal mechanisms for the animation are set up correctly.</p> 466a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 467a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase void initAnimation() { 468a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (!mInitialized) { 469a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = mValues.length; 470a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 471a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues[i].init(); 472a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 473a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mInitialized = true; 474a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 475a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 476a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 477a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 478a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 4792794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Sets the length of the animation. The default duration is 300 milliseconds. 480a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 481a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param duration The length of the animation, in milliseconds. 4822794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * @return ValueAnimator The object called with setDuration(). This return 4832794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * value makes it easier to compose statements together that construct and then set the 4842794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * duration, as in <code>ValueAnimator.ofInt(0, 10).setDuration(500).start()</code>. 485a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 4862794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase public ValueAnimator setDuration(long duration) { 487a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mDuration = duration; 4882794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase return this; 489a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 490a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 491a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 4922794eb3b02e2404d453d3ad22a8a85a138130a07Chet Haase * Gets the length of the animation. The default duration is 300 milliseconds. 493a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 494a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return The length of the animation, in milliseconds. 495a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 496a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public long getDuration() { 497a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mDuration; 498a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 499a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 500a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 501a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Sets the position of the animation to the specified point in time. This time should 502a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * be between 0 and the total duration of the animation, including any repetition. If 503a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the animation has not yet been started, then it will not advance forward after it is 504a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * set to this time; it will simply set the time to this value and perform any appropriate 505a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * actions based on that time. If the animation is already running, then setCurrentPlayTime() 506a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * will set the current playing time to this value and continue playing from that point. 507a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 508a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param playTime The time, in milliseconds, to which the animation is advanced or rewound. 509a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 510a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setCurrentPlayTime(long playTime) { 511a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase initAnimation(); 512a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long currentTime = AnimationUtils.currentAnimationTimeMillis(); 513a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mPlayingState != RUNNING) { 514a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mSeekTime = playTime; 515a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = SEEKED; 516a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 517a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime - playTime; 518a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase animationFrame(currentTime); 519a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 520a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 521a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 522a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Gets the current position of the animation in time, which is equal to the current 523a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * time minus the time that the animation started. An animation that is not yet started will 524a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * return a value of zero. 525a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 526a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return The current position in time of the animation. 527a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 528a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public long getCurrentPlayTime() { 529a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (!mInitialized || mPlayingState == STOPPED) { 530a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return 0; 531a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 532a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return AnimationUtils.currentAnimationTimeMillis() - mStartTime; 533a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 534a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 535a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 536a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This custom, static handler handles the timing pulse that is shared by 537a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * all active animations. This approach ensures that the setting of animation 538a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * values will happen on the UI thread and that all animations will share 539a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the same times for calculating their values, which makes synchronizing 540a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animations possible. 541a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 542a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 543a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static class AnimationHandler extends Handler { 544a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 545a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * There are only two messages that we care about: ANIMATION_START and 546a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * ANIMATION_FRAME. The START message is sent when an animation's start() 547a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * method is called. It cannot start synchronously when start() is called 548a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * because the call may be on the wrong thread, and it would also not be 549a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * synchronized with other animations because it would not start on a common 550a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * timing pulse. So each animation sends a START message to the handler, which 551a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * causes the handler to place the animation on the active animations queue and 552a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * start processing frames for that animation. 553a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The FRAME message is the one that is sent over and over while there are any 554a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * active animations to process. 555a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 556a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 557a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void handleMessage(Message msg) { 558a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase boolean callAgain = true; 559e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ArrayList<ValueAnimator> animations = sAnimations.get(); 560e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ArrayList<ValueAnimator> delayedAnims = sDelayedAnims.get(); 561a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase switch (msg.what) { 562a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // TODO: should we avoid sending frame message when starting if we 563a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // were already running? 564a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase case ANIMATION_START: 565e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ArrayList<ValueAnimator> pendingAnimations = sPendingAnimations.get(); 566e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase if (animations.size() > 0 || delayedAnims.size() > 0) { 567a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase callAgain = false; 568a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 569a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // pendingAnims holds any animations that have requested to be started 570a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // We're going to clear sPendingAnimations, but starting animation may 571a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // cause more to be added to the pending list (for example, if one animation 572a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // starting triggers another starting). So we loop until sPendingAnimations 573a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // is empty. 574e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase while (pendingAnimations.size() > 0) { 575a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<ValueAnimator> pendingCopy = 576e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase (ArrayList<ValueAnimator>) pendingAnimations.clone(); 577e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase pendingAnimations.clear(); 578a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int count = pendingCopy.size(); 579a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < count; ++i) { 580a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ValueAnimator anim = pendingCopy.get(i); 581a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // If the animation has a startDelay, place it on the delayed list 582e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase if (anim.mStartDelay == 0) { 583a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.startAnimation(); 584a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 585e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase delayedAnims.add(anim); 586a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 587a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 588a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 589a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // fall through to process first frame of new animations 590a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase case ANIMATION_FRAME: 591a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // currentTime holds the common time for all animations processed 592a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // during this frame 593a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long currentTime = AnimationUtils.currentAnimationTimeMillis(); 594e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ArrayList<ValueAnimator> readyAnims = sReadyAnims.get(); 595e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ArrayList<ValueAnimator> endingAnims = sEndingAnims.get(); 596a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 597a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // First, process animations currently sitting on the delayed queue, adding 598a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // them to the active animations if they are ready 599e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase int numDelayedAnims = delayedAnims.size(); 600a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numDelayedAnims; ++i) { 601e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ValueAnimator anim = delayedAnims.get(i); 602a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (anim.delayedAnimationFrame(currentTime)) { 603e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase readyAnims.add(anim); 604a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 605a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 606e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase int numReadyAnims = readyAnims.size(); 607a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (numReadyAnims > 0) { 608a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numReadyAnims; ++i) { 609e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ValueAnimator anim = readyAnims.get(i); 610a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.startAnimation(); 611e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase delayedAnims.remove(anim); 612a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 613e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase readyAnims.clear(); 614a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 615a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 616a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Now process all active animations. The return value from animationFrame() 617a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // tells the handler whether it should now be ended 618e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase int numAnims = animations.size(); 619e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase int i = 0; 620e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase while (i < numAnims) { 621e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase ValueAnimator anim = animations.get(i); 622a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (anim.animationFrame(currentTime)) { 623e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase endingAnims.add(anim); 624a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 625e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase if (animations.size() == numAnims) { 626e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase ++i; 627e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase } else { 628e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // An animation might be canceled or ended by client code 629e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // during the animation frame. Check to see if this happened by 630e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // seeing whether the current index is the same as it was before 631e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // calling animationFrame(). Another approach would be to copy 632e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // animations to a temporary list and process that list instead, 633e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // but that entails garbage and processing overhead that would 634e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // be nice to avoid. 635e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase --numAnims; 636e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase endingAnims.remove(anim); 637e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase } 638a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 639e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase if (endingAnims.size() > 0) { 640e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase for (i = 0; i < endingAnims.size(); ++i) { 641e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase endingAnims.get(i).endAnimation(); 642a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 643e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase endingAnims.clear(); 644a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 645a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 646a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // If there are still active or delayed animations, call the handler again 647a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // after the frameDelay 648e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase if (callAgain && (!animations.isEmpty() || !delayedAnims.isEmpty())) { 64951b3227c2e08143c2e3dde9d51ae5b6fff36693cChet Haase sendEmptyMessageDelayed(ANIMATION_FRAME, Math.max(0, sFrameDelay - 65051b3227c2e08143c2e3dde9d51ae5b6fff36693cChet Haase (AnimationUtils.currentAnimationTimeMillis() - currentTime))); 651a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 652a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase break; 653a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 654a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 655a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 656a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 657a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 658a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, to delay starting the animation after 659a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link #start()} is called. 660a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 661a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return the number of milliseconds to delay running the animation 662a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 663a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public long getStartDelay() { 664a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mStartDelay; 665a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 666a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 667a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 668a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, to delay starting the animation after 669a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link #start()} is called. 670a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 671a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param startDelay The amount of the delay, in milliseconds 672a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 673a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setStartDelay(long startDelay) { 674a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase this.mStartDelay = startDelay; 675a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 676a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 677a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 678a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, between each frame of the animation. This is a 679a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * requested time that the animation will attempt to honor, but the actual delay between 680a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frames may be different, depending on system load and capabilities. This is a static 681a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function because the same delay will be applied to all animations, since they are all 682a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * run off of a single timing loop. 683a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 684a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return the requested time between frames, in milliseconds 685a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 686a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static long getFrameDelay() { 687a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return sFrameDelay; 688a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 689a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 690a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 691a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, between each frame of the animation. This is a 692a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * requested time that the animation will attempt to honor, but the actual delay between 693a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frames may be different, depending on system load and capabilities. This is a static 694a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function because the same delay will be applied to all animations, since they are all 695a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * run off of a single timing loop. 696a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 697a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param frameDelay the requested time between frames, in milliseconds 698a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 699a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static void setFrameDelay(long frameDelay) { 700a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sFrameDelay = frameDelay; 701a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 702a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 703a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 704a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The most recent value calculated by this <code>ValueAnimator</code> when there is just one 705a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * property being animated. This value is only sensible while the animation is running. The main 706a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * purpose for this read-only property is to retrieve the value from the <code>ValueAnimator</code> 707a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * during a call to {@link AnimatorUpdateListener#onAnimationUpdate(ValueAnimator)}, which 708a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is called during each animation frame, immediately after the value is calculated. 709a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 710a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return animatedValue The value most recently calculated by this <code>ValueAnimator</code> for 711a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the single property being animated. If there are several properties being animated 712a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * (specified by several PropertyValuesHolder objects in the constructor), this function 713a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * returns the animated value for the first of those objects. 714a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 715a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public Object getAnimatedValue() { 716a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mValues != null && mValues.length > 0) { 717a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mValues[0].getAnimatedValue(); 718a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 719a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Shouldn't get here; should always have values unless ValueAnimator was set up wrong 720a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return null; 721a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 722a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 723a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 724a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The most recent value calculated by this <code>ValueAnimator</code> for <code>propertyName</code>. 725a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The main purpose for this read-only property is to retrieve the value from the 726a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <code>ValueAnimator</code> during a call to 727a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link AnimatorUpdateListener#onAnimationUpdate(ValueAnimator)}, which 728a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is called during each animation frame, immediately after the value is calculated. 729a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 730a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return animatedValue The value most recently calculated for the named property 731a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * by this <code>ValueAnimator</code>. 732a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 733a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public Object getAnimatedValue(String propertyName) { 734a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder valuesHolder = mValuesMap.get(propertyName); 735a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (valuesHolder != null) { 736a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return valuesHolder.getAnimatedValue(); 737a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 738a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // At least avoid crashing if called with bogus propertyName 739a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return null; 740a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 741a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 742a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 743a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 744a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Sets how many times the animation should be repeated. If the repeat 745a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * count is 0, the animation is never repeated. If the repeat count is 746a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * greater than 0 or {@link #INFINITE}, the repeat mode will be taken 747a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * into account. The repeat count is 0 by default. 748a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 749a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param value the number of times the animation should be repeated 750a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 751a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setRepeatCount(int value) { 752a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mRepeatCount = value; 753a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 754a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 755a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Defines how many times the animation should repeat. The default value 756a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is 0. 757a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 758a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return the number of times the animation should repeat, or {@link #INFINITE} 759a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 760a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public int getRepeatCount() { 761a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mRepeatCount; 762a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 763a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 764a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 765a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Defines what this animation should do when it reaches the end. This 766a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * setting is applied only when the repeat count is either greater than 767a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 0 or {@link #INFINITE}. Defaults to {@link #RESTART}. 768a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 769a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param value {@link #RESTART} or {@link #REVERSE} 770a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 771a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setRepeatMode(int value) { 772a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mRepeatMode = value; 773a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 774a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 775a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 776a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Defines what this animation should do when it reaches the end. 777a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 778a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return either one of {@link #REVERSE} or {@link #RESTART} 779a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 780a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public int getRepeatMode() { 781a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mRepeatMode; 782a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 783a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 784a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 785a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Adds a listener to the set of listeners that are sent update events through the life of 786a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * an animation. This method is called on all listeners for every frame of the animation, 787a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * after the values for the animation have been calculated. 788a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 789a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param listener the listener to be added to the current set of listeners for this animation. 790a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 791a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void addUpdateListener(AnimatorUpdateListener listener) { 792a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners == null) { 793a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners = new ArrayList<AnimatorUpdateListener>(); 794a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 795a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners.add(listener); 796a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 797a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 798a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 7993060421045d4d9e411797f91bb509824b03e33fbJim Miller * Removes all listeners from the set listening to frame updates for this animation. 8003060421045d4d9e411797f91bb509824b03e33fbJim Miller */ 8013060421045d4d9e411797f91bb509824b03e33fbJim Miller public void removeAllUpdateListeners() { 8023060421045d4d9e411797f91bb509824b03e33fbJim Miller if (mUpdateListeners == null) { 8033060421045d4d9e411797f91bb509824b03e33fbJim Miller return; 8043060421045d4d9e411797f91bb509824b03e33fbJim Miller } 8053060421045d4d9e411797f91bb509824b03e33fbJim Miller mUpdateListeners.clear(); 8063060421045d4d9e411797f91bb509824b03e33fbJim Miller mUpdateListeners = null; 8073060421045d4d9e411797f91bb509824b03e33fbJim Miller } 8083060421045d4d9e411797f91bb509824b03e33fbJim Miller 8093060421045d4d9e411797f91bb509824b03e33fbJim Miller /** 810a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Removes a listener from the set listening to frame updates for this animation. 811a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 812a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param listener the listener to be removed from the current set of update listeners 813a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * for this animation. 814a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 815a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void removeUpdateListener(AnimatorUpdateListener listener) { 816a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners == null) { 817a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return; 818a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 819a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners.remove(listener); 820a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners.size() == 0) { 821a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners = null; 822a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 823a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 824a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 825a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 826a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 827a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The time interpolator used in calculating the elapsed fraction of this animation. The 828a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * interpolator determines whether the animation runs with linear or non-linear motion, 829a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * such as acceleration and deceleration. The default value is 830a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link android.view.animation.AccelerateDecelerateInterpolator} 831a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 832a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param value the interpolator to be used by this animation 833a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 834a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 835e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase public void setInterpolator(TimeInterpolator value) { 836a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (value != null) { 837a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mInterpolator = value; 838a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 839a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 840a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 841a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 842a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Returns the timing interpolator that this ValueAnimator uses. 843a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 844a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return The timing interpolator for this ValueAnimator. 845a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 846e0ee2e9f3102c3c14c873a75a7b04e49787e0fb9Chet Haase public TimeInterpolator getInterpolator() { 847a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mInterpolator; 848a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 849a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 850a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 851a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The type evaluator to be used when calculating the animated values of this animation. 852a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The system will automatically assign a float, int, or double evaluator based on the type 853a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of <code>startValue</code> and <code>endValue</code> in the constructor. But if these values 854a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * are not one of these primitive types, or if different evaluation is desired (such as is 855a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * necessary with int values that represent colors), a custom evaluator needs to be assigned. 856a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * For example, when running an animation on color values, the {@link RGBEvaluator} 857a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * should be used to get correct RGB color interpolation. 858a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 859a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>If this ValueAnimator has only one set of values being animated between, this evaluator 860a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * will be used for that set. If there are several sets of values being animated, which is 861a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the case if PropertyValuesHOlder objects were set on the ValueAnimator, then the evaluator 862a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is assigned just to the first PropertyValuesHolder object.</p> 863a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 864a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param value the evaluator to be used this animation 865a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 866a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setEvaluator(TypeEvaluator value) { 867a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (value != null && mValues != null && mValues.length > 0) { 868a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues[0].setEvaluator(value); 869a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 870a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 871a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 872a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 873a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Start the animation playing. This version of start() takes a boolean flag that indicates 874a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * whether the animation should play in reverse. The flag is usually false, but may be set 8752970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * to true if called from the reverse() method. 8762970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * 8772970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * <p>The animation started by calling this method will be run on the thread that called 8782970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * this method. This thread should have a Looper on it (a runtime exception will be thrown if 8792970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * this is not the case). Also, if the animation will animate 8802970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * properties of objects in the view hierarchy, then the calling thread should be the UI 8812970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase * thread for that view hierarchy.</p> 882a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 883a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param playBackwards Whether the ValueAnimator should start playing in reverse. 884a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 885a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private void start(boolean playBackwards) { 8862970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase if (Looper.myLooper() == null) { 8872970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase throw new AndroidRuntimeException("Animators may only be run on Looper threads"); 8883060421045d4d9e411797f91bb509824b03e33fbJim Miller } 8892970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase mPlayingBackwards = playBackwards; 8902970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase if (mStartDelay == 0) { 891b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase if (mListeners != null) { 892b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase ArrayList<AnimatorListener> tmpListeners = 893b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase (ArrayList<AnimatorListener>) mListeners.clone(); 8947c608f25d494c8a0a671e7373efbb47ca635367eChet Haase int numListeners = tmpListeners.size(); 8957c608f25d494c8a0a671e7373efbb47ca635367eChet Haase for (int i = 0; i < numListeners; ++i) { 8967c608f25d494c8a0a671e7373efbb47ca635367eChet Haase tmpListeners.get(i).onAnimationStart(this); 897b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase } 898b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase } 899a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // This sets the initial value of the animation, prior to actually starting it running 900a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase setCurrentPlayTime(getCurrentPlayTime()); 901a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 9025c13d89c1332fcc499379b9064b891187b75ca32Chet Haase mCurrentIteration = 0; 903a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = STOPPED; 904a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartedDelay = false; 905e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase sPendingAnimations.get().add(this); 906e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase AnimationHandler animationHandler = sAnimationHandler.get(); 907e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase if (animationHandler == null) { 908e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase animationHandler = new AnimationHandler(); 909e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase sAnimationHandler.set(animationHandler); 910a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 911e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase animationHandler.sendEmptyMessage(ANIMATION_START); 912a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 913a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 914a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 915a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void start() { 916a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase start(false); 917a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 918a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 919a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 920a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void cancel() { 921a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mListeners != null) { 922a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<AnimatorListener> tmpListeners = 923a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase (ArrayList<AnimatorListener>) mListeners.clone(); 924a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (AnimatorListener listener : tmpListeners) { 925a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase listener.onAnimationCancel(this); 926a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 927a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 9282970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase // Only cancel if the animation is actually running or has been started and is about 9292970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase // to run 9302970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase if (mPlayingState != STOPPED || sPendingAnimations.get().contains(this) || 9312970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase sDelayedAnims.get().contains(this)) { 932e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase endAnimation(); 9332970c499388b4dcd1232cd622a9b80b395eeb2b4Chet Haase } 934a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 935a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 936a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 937a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void end() { 938e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase if (!sAnimations.get().contains(this) && !sPendingAnimations.get().contains(this)) { 939a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Special case if the animation has not yet started; get it ready for ending 940a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartedDelay = false; 941e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase startAnimation(); 942e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase } 943e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // The final value set on the target varies, depending on whether the animation 944e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase // was supposed to repeat an odd number of times 945e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase if (mRepeatCount > 0 && (mRepeatCount & 0x01) == 1) { 946e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase animateValue(0f); 947e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase } else { 948e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase animateValue(1f); 949a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 950e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase endAnimation(); 951a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 952a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 953a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 954a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public boolean isRunning() { 955e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase return (mPlayingState == RUNNING); 956a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 957a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 958a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 959a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Plays the ValueAnimator in reverse. If the animation is already running, 960a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * it will stop itself and play backwards from the point reached when reverse was called. 961a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * If the animation is not currently running, then it will start from the end and 962a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * play backwards. This behavior is only set for the current animation; future playing 963a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of the animation will use the default behavior of playing forward. 964a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 965a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void reverse() { 966a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingBackwards = !mPlayingBackwards; 967a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mPlayingState == RUNNING) { 968a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long currentTime = AnimationUtils.currentAnimationTimeMillis(); 969a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long currentPlayTime = currentTime - mStartTime; 970a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long timeLeft = mDuration - currentPlayTime; 971a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime - timeLeft; 972a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 973a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase start(true); 974a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 975a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 976a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 977a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 978a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Called internally to end an animation by removing it from the animations list. Must be 979a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * called on the UI thread. 980a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 981a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private void endAnimation() { 982e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase sAnimations.get().remove(this); 983e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase sPendingAnimations.get().remove(this); 984e2ab7ccd385cdb6517955c719e1d2b49771bedb6Chet Haase sDelayedAnims.get().remove(this); 985a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = STOPPED; 986a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mListeners != null) { 987a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<AnimatorListener> tmpListeners = 988a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase (ArrayList<AnimatorListener>) mListeners.clone(); 9897c608f25d494c8a0a671e7373efbb47ca635367eChet Haase int numListeners = tmpListeners.size(); 9907c608f25d494c8a0a671e7373efbb47ca635367eChet Haase for (int i = 0; i < numListeners; ++i) { 9917c608f25d494c8a0a671e7373efbb47ca635367eChet Haase tmpListeners.get(i).onAnimationEnd(this); 992a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 993a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 994a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 995a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 996a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 997a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Called internally to start an animation by adding it to the active animations list. Must be 998a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * called on the UI thread. 999a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1000a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private void startAnimation() { 1001a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase initAnimation(); 1002e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase sAnimations.get().add(this); 1003b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase if (mStartDelay > 0 && mListeners != null) { 1004b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase // Listeners were already notified in start() if startDelay is 0; this is 1005b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase // just for delayed animations 1006a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<AnimatorListener> tmpListeners = 1007a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase (ArrayList<AnimatorListener>) mListeners.clone(); 10087c608f25d494c8a0a671e7373efbb47ca635367eChet Haase int numListeners = tmpListeners.size(); 10097c608f25d494c8a0a671e7373efbb47ca635367eChet Haase for (int i = 0; i < numListeners; ++i) { 10107c608f25d494c8a0a671e7373efbb47ca635367eChet Haase tmpListeners.get(i).onAnimationStart(this); 1011a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1012a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1013a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1014a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1015a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1016a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Internal function called to process an animation frame on an animation that is currently 1017a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * sleeping through its <code>startDelay</code> phase. The return value indicates whether it 1018a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * should be woken up and put on the active animations queue. 1019a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 1020a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param currentTime The current animation time, used to calculate whether the animation 1021a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * has exceeded its <code>startDelay</code> and should be started. 1022a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return True if the animation's <code>startDelay</code> has been exceeded and the animation 1023a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * should be added to the set of active animations. 1024a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1025a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private boolean delayedAnimationFrame(long currentTime) { 1026a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (!mStartedDelay) { 1027a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartedDelay = true; 1028a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mDelayStartTime = currentTime; 1029a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 1030a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long deltaTime = currentTime - mDelayStartTime; 1031a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (deltaTime > mStartDelay) { 1032a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // startDelay ended - start the anim and record the 1033a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // mStartTime appropriately 1034a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime - (deltaTime - mStartDelay); 1035a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = RUNNING; 1036a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return true; 1037a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1038a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1039a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return false; 1040a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1041a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1042a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1043a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This internal function processes a single animation frame for a given animation. The 1044a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * currentTime parameter is the timing pulse sent by the handler, used to calculate the 1045a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * elapsed duration, and therefore 1046a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the elapsed fraction, of the animation. The return value indicates whether the animation 1047a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * should be ended (which happens when the elapsed time of the animation exceeds the 1048a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation's duration, including the repeatCount). 1049a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 1050a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param currentTime The current time, as tracked by the static timing handler 1051a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return true if the animation's duration, including any repetitions due to 1052a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <code>repeatCount</code> has been exceeded and the animation should be ended. 1053a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1054a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private boolean animationFrame(long currentTime) { 1055a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase boolean done = false; 1056a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1057a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mPlayingState == STOPPED) { 1058a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = RUNNING; 1059a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mSeekTime < 0) { 1060a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime; 1061a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 1062a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime - mSeekTime; 1063a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Now that we're playing, reset the seek time 1064a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mSeekTime = -1; 1065a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1066a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1067a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase switch (mPlayingState) { 1068a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase case RUNNING: 1069a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase case SEEKED: 107070d4ba15b1f0c1133c5aabc86de828b41e482fffChet Haase float fraction = mDuration > 0 ? (float)(currentTime - mStartTime) / mDuration : 1f; 1071a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (fraction >= 1f) { 1072a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mCurrentIteration < mRepeatCount || mRepeatCount == INFINITE) { 1073a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Time to repeat 1074a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mListeners != null) { 10757c608f25d494c8a0a671e7373efbb47ca635367eChet Haase int numListeners = mListeners.size(); 10767c608f25d494c8a0a671e7373efbb47ca635367eChet Haase for (int i = 0; i < numListeners; ++i) { 10777c608f25d494c8a0a671e7373efbb47ca635367eChet Haase mListeners.get(i).onAnimationRepeat(this); 1078a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1079a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1080a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mRepeatMode == REVERSE) { 1081a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingBackwards = mPlayingBackwards ? false : true; 1082a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1083730666858692ea396f5ad779654b5d86ff90b6caChet Haase mCurrentIteration += (int)fraction; 1084730666858692ea396f5ad779654b5d86ff90b6caChet Haase fraction = fraction % 1f; 1085a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime += mDuration; 1086a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 1087a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase done = true; 1088a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase fraction = Math.min(fraction, 1.0f); 1089a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1090a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1091a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mPlayingBackwards) { 1092a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase fraction = 1f - fraction; 1093a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1094a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase animateValue(fraction); 1095a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase break; 1096a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1097a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1098a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return done; 1099a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1100a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1101a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1102a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This method is called with the elapsed fraction of the animation during every 1103a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation frame. This function turns the elapsed fraction into an interpolated fraction 1104a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * and then into an animated value (from the evaluator. The function is called mostly during 1105a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation updates, but it is also called when the <code>end()</code> 1106a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function is called, to set the final value on the property. 1107a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 1108a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>Overrides of this method must call the superclass to perform the calculation 1109a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of the animated value.</p> 1110a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 1111a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param fraction The elapsed fraction of the animation. 1112a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1113a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase void animateValue(float fraction) { 1114a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase fraction = mInterpolator.getInterpolation(fraction); 1115a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = mValues.length; 1116a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 1117a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues[i].calculateValue(fraction); 1118a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1119a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners != null) { 1120a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numListeners = mUpdateListeners.size(); 1121a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numListeners; ++i) { 1122a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners.get(i).onAnimationUpdate(this); 1123a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1124a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1125a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1126a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1127a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 1128a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public ValueAnimator clone() { 1129a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase final ValueAnimator anim = (ValueAnimator) super.clone(); 1130a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners != null) { 1131a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<AnimatorUpdateListener> oldListeners = mUpdateListeners; 1132a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mUpdateListeners = new ArrayList<AnimatorUpdateListener>(); 1133a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numListeners = oldListeners.size(); 1134a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numListeners; ++i) { 1135a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mUpdateListeners.add(oldListeners.get(i)); 1136a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1137a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1138a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mSeekTime = -1; 1139a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mPlayingBackwards = false; 1140a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mCurrentIteration = 0; 1141a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mInitialized = false; 1142a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mPlayingState = STOPPED; 1143a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mStartedDelay = false; 1144a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder[] oldValues = mValues; 1145a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (oldValues != null) { 1146a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = oldValues.length; 1147a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mValues = new PropertyValuesHolder[numValues]; 1148a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 1149a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mValues[i] = oldValues[i].clone(); 1150a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1151a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mValuesMap = new HashMap<String, PropertyValuesHolder>(numValues); 1152a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 1153a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder valuesHolder = mValues[i]; 1154a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mValuesMap.put(valuesHolder.getPropertyName(), valuesHolder); 1155a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1156a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1157a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return anim; 1158a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1159a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1160a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1161a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Implementors of this interface can add themselves as update listeners 1162a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * to an <code>ValueAnimator</code> instance to receive callbacks on every animation 1163a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frame, after the current frame's values have been calculated for that 1164a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <code>ValueAnimator</code>. 1165a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1166a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static interface AnimatorUpdateListener { 1167a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 1168a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>Notifies the occurrence of another frame of the animation.</p> 1169a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 1170a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param animation The animation which was repeated. 1171a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1172a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase void onAnimationUpdate(ValueAnimator animation); 1173a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1174a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1175599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick 1176599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick /** 1177599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * Return the number of animations currently running. 1178599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * 1179599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * Used by StrictMode internally to annotate violations. Only 1180599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * called on the main thread. 1181599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * 1182599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick * @hide 1183599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick */ 1184599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick public static int getCurrentAnimationsCount() { 1185e3bc4e6f102fbef760fe0a59dd807363571b0867Chet Haase return sAnimations.get().size(); 1186599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick } 1187599ca29986235e07f532c7b112507f6c39b5dba9Brad Fitzpatrick} 1188