ValueAnimator.java revision 0e0590bf3cb32e73f423c0fe39a180d4b3c4343d
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; 22a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport android.view.animation.AccelerateDecelerateInterpolator; 23a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport android.view.animation.AnimationUtils; 24a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport android.view.animation.Interpolator; 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 39a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link ValueAnimator#setInterpolator(Interpolator)}.</p> 40a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 41a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haasepublic class ValueAnimator<T> 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 */ 50a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final long DEFAULT_FRAME_DELAY = 30; 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 65a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final int CANCELED = 2; // cancel() called - need to end it 66a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final int ENDED = 3; // end() called - need to end it 67a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final int SEEKED = 4; // Seeked to some time value 68a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 69a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 70a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Internal variables 71a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * NOTE: This object implements the clone() method, making a deep copy of any referenced 72a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * objects. As other non-trivial fields are added to this class, make sure to add logic 73a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * to clone() to make deep copies of them. 74a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 75a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 76a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The first time that the animation's animateFrame() method is called. This time is used to 77a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // determine elapsed time (and therefore the elapsed fraction) in subsequent calls 78a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // to animateFrame() 79a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private long mStartTime; 80a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 81a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 82a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Set when setCurrentPlayTime() is called. If negative, animation is not currently seeked 83a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * to a value. 84a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 85a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private long mSeekTime = -1; 86a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 87a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The static sAnimationHandler processes the internal timing loop on which all animations 88a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // are based 89a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static AnimationHandler sAnimationHandler; 90a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 91a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The static list of all active animations 92a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final ArrayList<ValueAnimator> sAnimations = new ArrayList<ValueAnimator>(); 93a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 94a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The set of animations to be started on the next animation frame 95a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final ArrayList<ValueAnimator> sPendingAnimations = new ArrayList<ValueAnimator>(); 96a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 97a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The time interpolator to be used if none is set on the animation 98a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final Interpolator sDefaultInterpolator = new AccelerateDecelerateInterpolator(); 99a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 100a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // type evaluators for the three primitive types handled by this implementation 101a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final TypeEvaluator sIntEvaluator = new IntEvaluator(); 102a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final TypeEvaluator sFloatEvaluator = new FloatEvaluator(); 103a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final TypeEvaluator sDoubleEvaluator = new DoubleEvaluator(); 104a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 105a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 106a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Used to indicate whether the animation is currently playing in reverse. This causes the 107a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * elapsed fraction to be inverted to calculate the appropriate values. 108a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 109a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private boolean mPlayingBackwards = false; 110a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 111a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 112a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This variable tracks the current iteration that is playing. When mCurrentIteration exceeds the 113a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * repeatCount (if repeatCount!=INFINITE), the animation ends 114a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 115a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private int mCurrentIteration = 0; 116a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 117a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 118a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Tracks whether a startDelay'd animation has begun playing through the startDelay. 119a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 120a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private boolean mStartedDelay = false; 121a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 122a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 123a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Tracks the time at which the animation began playing through its startDelay. This is 124a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * different from the mStartTime variable, which is used to track when the animation became 125a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * active (which is when the startDelay expired and the animation was added to the active 126a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animations list). 127a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 128a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private long mDelayStartTime; 129a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 130a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 131a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Flag that represents the current state of the animation. Used to figure out when to start 132a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * an animation (if state == STOPPED). Also used to end an animation that 133a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * has been cancel()'d or end()'d since the last animation frame. Possible values are 134a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * STOPPED, RUNNING, ENDED, CANCELED. 135a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 136a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private int mPlayingState = STOPPED; 137a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 138a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 139a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Internal collections used to avoid set collisions as animations start and end while being 140a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * processed. 141a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 142a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final ArrayList<ValueAnimator> sEndingAnims = new ArrayList<ValueAnimator>(); 143a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final ArrayList<ValueAnimator> sDelayedAnims = new ArrayList<ValueAnimator>(); 144a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static final ArrayList<ValueAnimator> sReadyAnims = new ArrayList<ValueAnimator>(); 145a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 146a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 147a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Flag that denotes whether the animation is set up and ready to go. Used to 148a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * set up animation that has not yet been started. 149a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 150a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase boolean mInitialized = false; 151a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 152a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // 153a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Backing variables 154a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // 155a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 156a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // How long the animation should last in ms 157a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private long mDuration; 158a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 159a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The amount of time in ms to delay starting the animation after start() is called 160a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private long mStartDelay = 0; 161a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 162a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The number of milliseconds between animation frames 163a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static long sFrameDelay = DEFAULT_FRAME_DELAY; 164a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 165a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The number of times the animation will repeat. The default is 0, which means the animation 166a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // will play only once 167a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private int mRepeatCount = 0; 168a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 169a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 170a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The type of repetition that will occur when repeatMode is nonzero. RESTART means the 171a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation will start from the beginning on every new cycle. REVERSE means the animation 172a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * will reverse directions on each iteration. 173a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 174a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private int mRepeatMode = RESTART; 175a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 176a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 177a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The time interpolator to be used. The elapsed fraction of the animation will be passed 178a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * through this interpolator to calculate the interpolated fraction, which is then used to 179a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * calculate the animated values. 180a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 181a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private Interpolator mInterpolator = sDefaultInterpolator; 182a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 183a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 184a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The set of listeners to be sent events through the life of an animation. 185a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 186a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private ArrayList<AnimatorUpdateListener> mUpdateListeners = null; 187a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 188a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 189a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The property/value sets being animated. 190a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 191a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder[] mValues; 192a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 193a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 194a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * A hashmap of the PropertyValuesHolder objects. This map is used to lookup animated values 195a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * by property name during calls to getAnimatedValue(String). 196a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 197a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase HashMap<String, PropertyValuesHolder> mValuesMap; 198a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 199a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 200a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Public constants 201a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 202a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 203a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 204a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * When the animation reaches the end and <code>repeatCount</code> is INFINITE 205a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * or a positive value, the animation restarts from the beginning. 206a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 207a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static final int RESTART = 1; 208a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 209a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * When the animation reaches the end and <code>repeatCount</code> is INFINITE 210a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * or a positive value, the animation reverses direction on every iteration. 211a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 212a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static final int REVERSE = 2; 213a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 214a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This value used used with the {@link #setRepeatCount(int)} property to repeat 215a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the animation indefinitely. 216a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 217a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static final int INFINITE = -1; 218a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 219a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 220a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Creates a new ValueAnimator object. This default constructor is primarily for 221a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * use internally; the other constructors which take parameters are more generally 222a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * useful. 223a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 224a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public ValueAnimator() { 225a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 226a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 227a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 228a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Constructs an ValueAnimator object with the specified duration and set of 229a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * values. If the values are a set of PropertyValuesHolder objects, then these objects 230a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * define the potentially multiple properties being animated and the values the properties are 231a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animated between. Otherwise, the values define a single set of values animated between. 232a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 233a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param duration The length of the animation, in milliseconds. 234a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param values The set of values to animate between. If these values are not 235a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * PropertyValuesHolder objects, then there should be more than one value, since the values 236a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * determine the interval to animate between. 237a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 238a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public ValueAnimator(long duration, T...values) { 239a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mDuration = duration; 240a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (values.length > 0) { 241a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase setValues(values); 242a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 243a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 244a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 245a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 246a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Sets the values, per property, being animated between. This function is called internally 247a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * by the constructors of ValueAnimator that take a list of values. But an ValueAnimator can 248a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * be constructed without values and this method can be called to set the values manually 249a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * instead. 250a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 251a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param values The set of values, per property, being animated between. 252a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 253a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setValues(PropertyValuesHolder... values) { 254a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = values.length; 255a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues = values; 256a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValuesMap = new HashMap<String, PropertyValuesHolder>(numValues); 257a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 258a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder valuesHolder = (PropertyValuesHolder) values[i]; 259a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValuesMap.put(valuesHolder.getPropertyName(), valuesHolder); 260a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 2610e0590bf3cb32e73f423c0fe39a180d4b3c4343dChet Haase // New property/values/target should cause re-initialization prior to starting 2620e0590bf3cb32e73f423c0fe39a180d4b3c4343dChet Haase mInitialized = false; 263a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 264a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 265a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 266a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Returns the values that this ValueAnimator animates between. These values are stored in 267a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * PropertyValuesHolder objects, even if the ValueAnimator was created with a simple list 268a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of value objects instead. 269a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 270a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return PropertyValuesHolder[] An array of PropertyValuesHolder objects which hold the 271a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * values, per property, that define the animation. 272a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 273a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public PropertyValuesHolder[] getValues() { 274a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mValues; 275a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 276a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 277a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 278a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Sets the values to animate between for this animation. If <code>values</code> is 279a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * a set of PropertyValuesHolder objects, these objects will become the set of properties 280a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animated and the values that those properties are animated between. Otherwise, this method 281a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * will set only one set of values for the ValueAnimator. Also, if the values are not 282a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * PropertyValuesHolder objects and if there are already multiple sets of 283a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * values defined for this ValueAnimator via 284a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * more than one PropertyValuesHolder objects, this method will set the values for 285a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the first of those objects. 286a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 287a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param values The set of values to animate between. 288a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 289a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setValues(T... values) { 290a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mValues == null || mValues.length == 0) { 291a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase setValues(new PropertyValuesHolder[]{ 292a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase new PropertyValuesHolder("", (Object[])values)}); 293a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 294a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder valuesHolder = mValues[0]; 295a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase valuesHolder.setValues(values); 296a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 2970e0590bf3cb32e73f423c0fe39a180d4b3c4343dChet Haase // New property/values/target should cause re-initialization prior to starting 2980e0590bf3cb32e73f423c0fe39a180d4b3c4343dChet Haase mInitialized = false; 299a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 300a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 301a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 302a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This function is called immediately before processing the first animation 303a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frame of an animation. If there is a nonzero <code>startDelay</code>, the 304a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function is called after that delay ends. 305a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * It takes care of the final initialization steps for the 306a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation. 307a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 308a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>Overrides of this method should call the superclass method to ensure 309a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * that internal mechanisms for the animation are set up correctly.</p> 310a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 311a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase void initAnimation() { 312a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (!mInitialized) { 313a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = mValues.length; 314a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 315a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues[i].init(); 316a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 317a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mCurrentIteration = 0; 318a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mInitialized = true; 319a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 320a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 321a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 322a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 323a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 324a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Sets the length of the animation. 325a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 326a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param duration The length of the animation, in milliseconds. 327a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 328a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setDuration(long duration) { 329a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mDuration = duration; 330a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 331a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 332a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 333a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Gets the length of the animation. 334a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 335a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return The length of the animation, in milliseconds. 336a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 337a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public long getDuration() { 338a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mDuration; 339a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 340a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 341a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 342a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Sets the position of the animation to the specified point in time. This time should 343a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * be between 0 and the total duration of the animation, including any repetition. If 344a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the animation has not yet been started, then it will not advance forward after it is 345a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * set to this time; it will simply set the time to this value and perform any appropriate 346a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * actions based on that time. If the animation is already running, then setCurrentPlayTime() 347a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * will set the current playing time to this value and continue playing from that point. 348a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 349a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param playTime The time, in milliseconds, to which the animation is advanced or rewound. 350a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 351a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setCurrentPlayTime(long playTime) { 352a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase initAnimation(); 353a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long currentTime = AnimationUtils.currentAnimationTimeMillis(); 354a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mPlayingState != RUNNING) { 355a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mSeekTime = playTime; 356a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = SEEKED; 357a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 358a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime - playTime; 359a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase animationFrame(currentTime); 360a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 361a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 362a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 363a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Gets the current position of the animation in time, which is equal to the current 364a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * time minus the time that the animation started. An animation that is not yet started will 365a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * return a value of zero. 366a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 367a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return The current position in time of the animation. 368a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 369a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public long getCurrentPlayTime() { 370a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (!mInitialized || mPlayingState == STOPPED) { 371a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return 0; 372a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 373a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return AnimationUtils.currentAnimationTimeMillis() - mStartTime; 374a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 375a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 376a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 377a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This custom, static handler handles the timing pulse that is shared by 378a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * all active animations. This approach ensures that the setting of animation 379a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * values will happen on the UI thread and that all animations will share 380a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the same times for calculating their values, which makes synchronizing 381a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animations possible. 382a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 383a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 384a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private static class AnimationHandler extends Handler { 385a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 386a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * There are only two messages that we care about: ANIMATION_START and 387a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * ANIMATION_FRAME. The START message is sent when an animation's start() 388a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * method is called. It cannot start synchronously when start() is called 389a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * because the call may be on the wrong thread, and it would also not be 390a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * synchronized with other animations because it would not start on a common 391a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * timing pulse. So each animation sends a START message to the handler, which 392a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * causes the handler to place the animation on the active animations queue and 393a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * start processing frames for that animation. 394a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The FRAME message is the one that is sent over and over while there are any 395a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * active animations to process. 396a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 397a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 398a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void handleMessage(Message msg) { 399a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase boolean callAgain = true; 400a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase switch (msg.what) { 401a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // TODO: should we avoid sending frame message when starting if we 402a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // were already running? 403a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase case ANIMATION_START: 404a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (sAnimations.size() > 0 || sDelayedAnims.size() > 0) { 405a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase callAgain = false; 406a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 407a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // pendingAnims holds any animations that have requested to be started 408a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // We're going to clear sPendingAnimations, but starting animation may 409a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // cause more to be added to the pending list (for example, if one animation 410a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // starting triggers another starting). So we loop until sPendingAnimations 411a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // is empty. 412a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase while (sPendingAnimations.size() > 0) { 413a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<ValueAnimator> pendingCopy = 414a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase (ArrayList<ValueAnimator>) sPendingAnimations.clone(); 415a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sPendingAnimations.clear(); 416a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int count = pendingCopy.size(); 417a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < count; ++i) { 418a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ValueAnimator anim = pendingCopy.get(i); 419a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // If the animation has a startDelay, place it on the delayed list 420a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (anim.mStartDelay == 0 || anim.mPlayingState == ENDED || 421a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mPlayingState == CANCELED) { 422a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.startAnimation(); 423a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 424a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sDelayedAnims.add(anim); 425a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 426a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 427a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 428a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // fall through to process first frame of new animations 429a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase case ANIMATION_FRAME: 430a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // currentTime holds the common time for all animations processed 431a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // during this frame 432a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long currentTime = AnimationUtils.currentAnimationTimeMillis(); 433a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 434a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // First, process animations currently sitting on the delayed queue, adding 435a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // them to the active animations if they are ready 436a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numDelayedAnims = sDelayedAnims.size(); 437a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numDelayedAnims; ++i) { 438a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ValueAnimator anim = sDelayedAnims.get(i); 439a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (anim.delayedAnimationFrame(currentTime)) { 440a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sReadyAnims.add(anim); 441a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 442a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 443a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numReadyAnims = sReadyAnims.size(); 444a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (numReadyAnims > 0) { 445a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numReadyAnims; ++i) { 446a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ValueAnimator anim = sReadyAnims.get(i); 447a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.startAnimation(); 448a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sDelayedAnims.remove(anim); 449a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 450a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sReadyAnims.clear(); 451a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 452a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 453a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Now process all active animations. The return value from animationFrame() 454a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // tells the handler whether it should now be ended 455a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numAnims = sAnimations.size(); 456a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numAnims; ++i) { 457a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ValueAnimator anim = sAnimations.get(i); 458a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (anim.animationFrame(currentTime)) { 459a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sEndingAnims.add(anim); 460a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 461a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 462a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (sEndingAnims.size() > 0) { 463a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < sEndingAnims.size(); ++i) { 464a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sEndingAnims.get(i).endAnimation(); 465a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 466a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sEndingAnims.clear(); 467a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 468a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 469a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // If there are still active or delayed animations, call the handler again 470a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // after the frameDelay 471a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (callAgain && (!sAnimations.isEmpty() || !sDelayedAnims.isEmpty())) { 472a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sendEmptyMessageDelayed(ANIMATION_FRAME, sFrameDelay); 473a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 474a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase break; 475a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 476a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 477a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 478a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 479a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 480a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, to delay starting the animation after 481a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link #start()} is called. 482a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 483a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return the number of milliseconds to delay running the animation 484a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 485a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public long getStartDelay() { 486a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mStartDelay; 487a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 488a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 489a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 490a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, to delay starting the animation after 491a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link #start()} is called. 492a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 493a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param startDelay The amount of the delay, in milliseconds 494a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 495a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setStartDelay(long startDelay) { 496a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase this.mStartDelay = startDelay; 497a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 498a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 499a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 500a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, between each frame of the animation. This is a 501a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * requested time that the animation will attempt to honor, but the actual delay between 502a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frames may be different, depending on system load and capabilities. This is a static 503a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function because the same delay will be applied to all animations, since they are all 504a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * run off of a single timing loop. 505a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 506a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return the requested time between frames, in milliseconds 507a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 508a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static long getFrameDelay() { 509a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return sFrameDelay; 510a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 511a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 512a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 513a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The amount of time, in milliseconds, between each frame of the animation. This is a 514a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * requested time that the animation will attempt to honor, but the actual delay between 515a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frames may be different, depending on system load and capabilities. This is a static 516a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function because the same delay will be applied to all animations, since they are all 517a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * run off of a single timing loop. 518a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 519a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param frameDelay the requested time between frames, in milliseconds 520a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 521a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static void setFrameDelay(long frameDelay) { 522a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sFrameDelay = frameDelay; 523a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 524a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 525a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 526a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The most recent value calculated by this <code>ValueAnimator</code> when there is just one 527a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * property being animated. This value is only sensible while the animation is running. The main 528a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * purpose for this read-only property is to retrieve the value from the <code>ValueAnimator</code> 529a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * during a call to {@link AnimatorUpdateListener#onAnimationUpdate(ValueAnimator)}, which 530a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is called during each animation frame, immediately after the value is calculated. 531a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 532a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return animatedValue The value most recently calculated by this <code>ValueAnimator</code> for 533a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the single property being animated. If there are several properties being animated 534a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * (specified by several PropertyValuesHolder objects in the constructor), this function 535a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * returns the animated value for the first of those objects. 536a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 537a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public Object getAnimatedValue() { 538a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mValues != null && mValues.length > 0) { 539a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mValues[0].getAnimatedValue(); 540a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 541a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Shouldn't get here; should always have values unless ValueAnimator was set up wrong 542a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return null; 543a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 544a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 545a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 546a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The most recent value calculated by this <code>ValueAnimator</code> for <code>propertyName</code>. 547a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The main purpose for this read-only property is to retrieve the value from the 548a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <code>ValueAnimator</code> during a call to 549a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link AnimatorUpdateListener#onAnimationUpdate(ValueAnimator)}, which 550a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is called during each animation frame, immediately after the value is calculated. 551a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 552a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return animatedValue The value most recently calculated for the named property 553a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * by this <code>ValueAnimator</code>. 554a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 555a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public Object getAnimatedValue(String propertyName) { 556a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder valuesHolder = mValuesMap.get(propertyName); 557a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (valuesHolder != null) { 558a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return valuesHolder.getAnimatedValue(); 559a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 560a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // At least avoid crashing if called with bogus propertyName 561a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return null; 562a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 563a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 564a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 565a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 566a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Sets how many times the animation should be repeated. If the repeat 567a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * count is 0, the animation is never repeated. If the repeat count is 568a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * greater than 0 or {@link #INFINITE}, the repeat mode will be taken 569a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * into account. The repeat count is 0 by default. 570a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 571a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param value the number of times the animation should be repeated 572a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 573a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setRepeatCount(int value) { 574a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mRepeatCount = value; 575a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 576a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 577a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Defines how many times the animation should repeat. The default value 578a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is 0. 579a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 580a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return the number of times the animation should repeat, or {@link #INFINITE} 581a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 582a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public int getRepeatCount() { 583a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mRepeatCount; 584a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 585a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 586a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 587a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Defines what this animation should do when it reaches the end. This 588a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * setting is applied only when the repeat count is either greater than 589a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 0 or {@link #INFINITE}. Defaults to {@link #RESTART}. 590a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 591a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param value {@link #RESTART} or {@link #REVERSE} 592a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 593a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setRepeatMode(int value) { 594a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mRepeatMode = value; 595a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 596a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 597a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 598a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Defines what this animation should do when it reaches the end. 599a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 600a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return either one of {@link #REVERSE} or {@link #RESTART} 601a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 602a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public int getRepeatMode() { 603a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mRepeatMode; 604a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 605a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 606a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 607a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Adds a listener to the set of listeners that are sent update events through the life of 608a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * an animation. This method is called on all listeners for every frame of the animation, 609a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * after the values for the animation have been calculated. 610a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 611a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param listener the listener to be added to the current set of listeners for this animation. 612a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 613a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void addUpdateListener(AnimatorUpdateListener listener) { 614a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners == null) { 615a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners = new ArrayList<AnimatorUpdateListener>(); 616a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 617a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners.add(listener); 618a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 619a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 620a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 6213060421045d4d9e411797f91bb509824b03e33fbJim Miller * Removes all listeners from the set listening to frame updates for this animation. 6223060421045d4d9e411797f91bb509824b03e33fbJim Miller */ 6233060421045d4d9e411797f91bb509824b03e33fbJim Miller public void removeAllUpdateListeners() { 6243060421045d4d9e411797f91bb509824b03e33fbJim Miller if (mUpdateListeners == null) { 6253060421045d4d9e411797f91bb509824b03e33fbJim Miller return; 6263060421045d4d9e411797f91bb509824b03e33fbJim Miller } 6273060421045d4d9e411797f91bb509824b03e33fbJim Miller mUpdateListeners.clear(); 6283060421045d4d9e411797f91bb509824b03e33fbJim Miller mUpdateListeners = null; 6293060421045d4d9e411797f91bb509824b03e33fbJim Miller } 6303060421045d4d9e411797f91bb509824b03e33fbJim Miller 6313060421045d4d9e411797f91bb509824b03e33fbJim Miller /** 632a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Removes a listener from the set listening to frame updates for this animation. 633a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 634a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param listener the listener to be removed from the current set of update listeners 635a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * for this animation. 636a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 637a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void removeUpdateListener(AnimatorUpdateListener listener) { 638a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners == null) { 639a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return; 640a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 641a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners.remove(listener); 642a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners.size() == 0) { 643a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners = null; 644a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 645a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 646a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 647a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 648a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 649a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The time interpolator used in calculating the elapsed fraction of this animation. The 650a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * interpolator determines whether the animation runs with linear or non-linear motion, 651a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * such as acceleration and deceleration. The default value is 652a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * {@link android.view.animation.AccelerateDecelerateInterpolator} 653a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 654a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param value the interpolator to be used by this animation 655a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 656a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 657a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setInterpolator(Interpolator value) { 658a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (value != null) { 659a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mInterpolator = value; 660a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 661a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 662a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 663a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 664a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Returns the timing interpolator that this ValueAnimator uses. 665a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 666a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return The timing interpolator for this ValueAnimator. 667a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 668a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public Interpolator getInterpolator() { 669a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return mInterpolator; 670a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 671a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 672a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 673a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The type evaluator to be used when calculating the animated values of this animation. 674a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * The system will automatically assign a float, int, or double evaluator based on the type 675a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of <code>startValue</code> and <code>endValue</code> in the constructor. But if these values 676a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * are not one of these primitive types, or if different evaluation is desired (such as is 677a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * necessary with int values that represent colors), a custom evaluator needs to be assigned. 678a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * For example, when running an animation on color values, the {@link RGBEvaluator} 679a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * should be used to get correct RGB color interpolation. 680a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 681a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>If this ValueAnimator has only one set of values being animated between, this evaluator 682a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * will be used for that set. If there are several sets of values being animated, which is 683a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the case if PropertyValuesHOlder objects were set on the ValueAnimator, then the evaluator 684a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * is assigned just to the first PropertyValuesHolder object.</p> 685a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 686a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param value the evaluator to be used this animation 687a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 688a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void setEvaluator(TypeEvaluator value) { 689a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (value != null && mValues != null && mValues.length > 0) { 690a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues[0].setEvaluator(value); 691a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 692a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 693a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 694a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 695a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Start the animation playing. This version of start() takes a boolean flag that indicates 696a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * whether the animation should play in reverse. The flag is usually false, but may be set 697a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * to true if called from the reverse() method/ 698a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 699a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param playBackwards Whether the ValueAnimator should start playing in reverse. 700a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 701a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private void start(boolean playBackwards) { 702a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingBackwards = playBackwards; 7033060421045d4d9e411797f91bb509824b03e33fbJim Miller Looper looper = Looper.getMainLooper(); 7043060421045d4d9e411797f91bb509824b03e33fbJim Miller final boolean isUiThread; 7053060421045d4d9e411797f91bb509824b03e33fbJim Miller if (looper != null) { 7063060421045d4d9e411797f91bb509824b03e33fbJim Miller isUiThread = Thread.currentThread() == looper.getThread(); 7073060421045d4d9e411797f91bb509824b03e33fbJim Miller } else { 7083060421045d4d9e411797f91bb509824b03e33fbJim Miller // ignore check if we don't have a Looper (this isn't an Activity) 7093060421045d4d9e411797f91bb509824b03e33fbJim Miller isUiThread = true; 7103060421045d4d9e411797f91bb509824b03e33fbJim Miller } 7113060421045d4d9e411797f91bb509824b03e33fbJim Miller if ((mStartDelay == 0) && isUiThread) { 712b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase if (mListeners != null) { 713b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase ArrayList<AnimatorListener> tmpListeners = 714b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase (ArrayList<AnimatorListener>) mListeners.clone(); 715b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase for (AnimatorListener listener : tmpListeners) { 716b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase listener.onAnimationStart(this); 717b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase } 718b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase } 719a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // This sets the initial value of the animation, prior to actually starting it running 720a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase setCurrentPlayTime(getCurrentPlayTime()); 721a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 722a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = STOPPED; 723a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartedDelay = false; 724a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sPendingAnimations.add(this); 725a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (sAnimationHandler == null) { 726a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sAnimationHandler = new AnimationHandler(); 727a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 728a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // TODO: does this put too many messages on the queue if the handler 729a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // is already running? 730a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sAnimationHandler.sendEmptyMessage(ANIMATION_START); 731a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 732a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 733a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 734a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void start() { 735a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase start(false); 736a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 737a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 738a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 739a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void cancel() { 740a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mListeners != null) { 741a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<AnimatorListener> tmpListeners = 742a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase (ArrayList<AnimatorListener>) mListeners.clone(); 743a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (AnimatorListener listener : tmpListeners) { 744a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase listener.onAnimationCancel(this); 745a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 746a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 747a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Just set the CANCELED flag - this causes the animation to end the next time a frame 748a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // is processed. 749a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = CANCELED; 750a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 751a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 752a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 753a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void end() { 754a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (!sAnimations.contains(this) && !sPendingAnimations.contains(this)) { 755a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Special case if the animation has not yet started; get it ready for ending 756a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartedDelay = false; 757a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sPendingAnimations.add(this); 758a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (sAnimationHandler == null) { 759a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sAnimationHandler = new AnimationHandler(); 760a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 761a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sAnimationHandler.sendEmptyMessage(ANIMATION_START); 762a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 763a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Just set the ENDED flag - this causes the animation to end the next time a frame 764a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // is processed. 765a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = ENDED; 766a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 767a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 768a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 769a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public boolean isRunning() { 770a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // ENDED or CANCELED indicate that it has been ended or canceled, but not processed yet 771a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return (mPlayingState == RUNNING || mPlayingState == ENDED || mPlayingState == CANCELED); 772a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 773a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 774a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 775a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Plays the ValueAnimator in reverse. If the animation is already running, 776a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * it will stop itself and play backwards from the point reached when reverse was called. 777a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * If the animation is not currently running, then it will start from the end and 778a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * play backwards. This behavior is only set for the current animation; future playing 779a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of the animation will use the default behavior of playing forward. 780a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 781a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public void reverse() { 782a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingBackwards = !mPlayingBackwards; 783a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mPlayingState == RUNNING) { 784a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long currentTime = AnimationUtils.currentAnimationTimeMillis(); 785a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long currentPlayTime = currentTime - mStartTime; 786a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long timeLeft = mDuration - currentPlayTime; 787a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime - timeLeft; 788a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 789a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase start(true); 790a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 791a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 792a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 793a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 794a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Called internally to end an animation by removing it from the animations list. Must be 795a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * called on the UI thread. 796a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 797a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private void endAnimation() { 798a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sAnimations.remove(this); 799a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = STOPPED; 800a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mListeners != null) { 801a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<AnimatorListener> tmpListeners = 802a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase (ArrayList<AnimatorListener>) mListeners.clone(); 803a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (AnimatorListener listener : tmpListeners) { 804a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase listener.onAnimationEnd(this); 805a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 806a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 807a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 808a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 809a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 810a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Called internally to start an animation by adding it to the active animations list. Must be 811a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * called on the UI thread. 812a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 813a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private void startAnimation() { 814a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase initAnimation(); 815a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase sAnimations.add(this); 816b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase if (mStartDelay > 0 && mListeners != null) { 817b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase // Listeners were already notified in start() if startDelay is 0; this is 818b20db3ec34e846010f389880b2cfab4d7bf79820Chet Haase // just for delayed animations 819a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<AnimatorListener> tmpListeners = 820a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase (ArrayList<AnimatorListener>) mListeners.clone(); 821a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (AnimatorListener listener : tmpListeners) { 822a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase listener.onAnimationStart(this); 823a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 824a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 825a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 826a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 827a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 828a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Internal function called to process an animation frame on an animation that is currently 829a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * sleeping through its <code>startDelay</code> phase. The return value indicates whether it 830a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * should be woken up and put on the active animations queue. 831a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 832a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param currentTime The current animation time, used to calculate whether the animation 833a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * has exceeded its <code>startDelay</code> and should be started. 834a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return True if the animation's <code>startDelay</code> has been exceeded and the animation 835a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * should be added to the set of active animations. 836a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 837a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private boolean delayedAnimationFrame(long currentTime) { 838a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mPlayingState == CANCELED || mPlayingState == ENDED) { 839a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // end the delay, process an animation frame to actually cancel it 840a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return true; 841a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 842a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (!mStartedDelay) { 843a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartedDelay = true; 844a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mDelayStartTime = currentTime; 845a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 846a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase long deltaTime = currentTime - mDelayStartTime; 847a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (deltaTime > mStartDelay) { 848a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // startDelay ended - start the anim and record the 849a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // mStartTime appropriately 850a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime - (deltaTime - mStartDelay); 851a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = RUNNING; 852a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return true; 853a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 854a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 855a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return false; 856a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 857a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 858a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 859a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This internal function processes a single animation frame for a given animation. The 860a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * currentTime parameter is the timing pulse sent by the handler, used to calculate the 861a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * elapsed duration, and therefore 862a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * the elapsed fraction, of the animation. The return value indicates whether the animation 863a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * should be ended (which happens when the elapsed time of the animation exceeds the 864a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation's duration, including the repeatCount). 865a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 866a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param currentTime The current time, as tracked by the static timing handler 867a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @return true if the animation's duration, including any repetitions due to 868a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <code>repeatCount</code> has been exceeded and the animation should be ended. 869a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 870a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase private boolean animationFrame(long currentTime) { 871a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase boolean done = false; 872a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 873a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mPlayingState == STOPPED) { 874a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = RUNNING; 875a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mSeekTime < 0) { 876a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime; 877a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 878a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime = currentTime - mSeekTime; 879a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Now that we're playing, reset the seek time 880a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mSeekTime = -1; 881a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 882a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 883a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase switch (mPlayingState) { 884a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase case RUNNING: 885a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase case SEEKED: 886a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase float fraction = (float)(currentTime - mStartTime) / mDuration; 887a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (fraction >= 1f) { 888a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mCurrentIteration < mRepeatCount || mRepeatCount == INFINITE) { 889a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Time to repeat 890a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mListeners != null) { 891a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (AnimatorListener listener : mListeners) { 892a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase listener.onAnimationRepeat(this); 893a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 894a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 895a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ++mCurrentIteration; 896a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mRepeatMode == REVERSE) { 897a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingBackwards = mPlayingBackwards ? false : true; 898a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 899a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // TODO: doesn't account for fraction going Wayyyyy over 1, like 2+ 900a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase fraction = fraction - 1f; 901a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mStartTime += mDuration; 902a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 903a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase done = true; 904a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase fraction = Math.min(fraction, 1.0f); 905a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 906a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 907a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mPlayingBackwards) { 908a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase fraction = 1f - fraction; 909a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 910a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase animateValue(fraction); 911a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase break; 912a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase case ENDED: 913a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // The final value set on the target varies, depending on whether the animation 914a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // was supposed to repeat an odd number of times 915a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mRepeatCount > 0 && (mRepeatCount & 0x01) == 1) { 916a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase animateValue(0f); 917a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } else { 918a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase animateValue(1f); 919a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 920a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase // Fall through to set done flag 921a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase case CANCELED: 922a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase done = true; 923a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mPlayingState = STOPPED; 924a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase break; 925a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 926a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 927a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return done; 928a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 929a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 930a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 931a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * This method is called with the elapsed fraction of the animation during every 932a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation frame. This function turns the elapsed fraction into an interpolated fraction 933a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * and then into an animated value (from the evaluator. The function is called mostly during 934a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * animation updates, but it is also called when the <code>end()</code> 935a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * function is called, to set the final value on the property. 936a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 937a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>Overrides of this method must call the superclass to perform the calculation 938a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * of the animated value.</p> 939a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 940a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param fraction The elapsed fraction of the animation. 941a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 942a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase void animateValue(float fraction) { 943a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase fraction = mInterpolator.getInterpolation(fraction); 944a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = mValues.length; 945a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 946a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mValues[i].calculateValue(fraction); 947a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 948a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners != null) { 949a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numListeners = mUpdateListeners.size(); 950a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numListeners; ++i) { 951a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase mUpdateListeners.get(i).onAnimationUpdate(this); 952a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 953a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 954a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 955a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 956a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase @Override 957a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public ValueAnimator clone() { 958a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase final ValueAnimator anim = (ValueAnimator) super.clone(); 959a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (mUpdateListeners != null) { 960a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase ArrayList<AnimatorUpdateListener> oldListeners = mUpdateListeners; 961a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mUpdateListeners = new ArrayList<AnimatorUpdateListener>(); 962a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numListeners = oldListeners.size(); 963a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numListeners; ++i) { 964a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mUpdateListeners.add(oldListeners.get(i)); 965a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 966a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 967a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mSeekTime = -1; 968a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mPlayingBackwards = false; 969a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mCurrentIteration = 0; 970a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mInitialized = false; 971a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mPlayingState = STOPPED; 972a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mStartedDelay = false; 973a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder[] oldValues = mValues; 974a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase if (oldValues != null) { 975a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase int numValues = oldValues.length; 976a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mValues = new PropertyValuesHolder[numValues]; 977a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 978a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mValues[i] = oldValues[i].clone(); 979a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 980a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mValuesMap = new HashMap<String, PropertyValuesHolder>(numValues); 981a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase for (int i = 0; i < numValues; ++i) { 982a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase PropertyValuesHolder valuesHolder = mValues[i]; 983a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase anim.mValuesMap.put(valuesHolder.getPropertyName(), valuesHolder); 984a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 985a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 986a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase return anim; 987a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 988a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 989a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 990a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * Implementors of this interface can add themselves as update listeners 991a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * to an <code>ValueAnimator</code> instance to receive callbacks on every animation 992a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * frame, after the current frame's values have been calculated for that 993a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <code>ValueAnimator</code>. 994a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 995a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase public static interface AnimatorUpdateListener { 996a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase /** 997a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * <p>Notifies the occurrence of another frame of the animation.</p> 998a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * 999a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase * @param animation The animation which was repeated. 1000a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase */ 1001a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase void onAnimationUpdate(ValueAnimator animation); 1002a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase 1003a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase } 1004a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haase}