1 package com.bumptech.glide.request.animation; 2 3 import android.content.Context; 4 import android.view.animation.Animation; 5 import android.view.animation.AnimationUtils; 6 7 /** 8 * A {@link com.bumptech.glide.request.animation.GlideAnimationFactory} that produces 9 * {@link com.bumptech.glide.request.animation.ViewAnimation}s. 10 * 11 * @param <R> The type of the resource displayed in the view that is animated 12 */ 13 public class ViewAnimationFactory<R> implements GlideAnimationFactory<R> { 14 private final ViewAnimation.AnimationFactory animationFactory; 15 private GlideAnimation<R> glideAnimation; 16 17 public ViewAnimationFactory(Animation animation) { 18 this(new ConcreteAnimationFactory(animation)); 19 } 20 21 public ViewAnimationFactory(Context context, int animationId) { 22 this(new ResourceAnimationFactory(context, animationId)); 23 } 24 25 ViewAnimationFactory(ViewAnimation.AnimationFactory animationFactory) { 26 this.animationFactory = animationFactory; 27 } 28 29 /** 30 * Returns a new {@link com.bumptech.glide.request.animation.GlideAnimation} for the given arguments. If 31 * isFromMemoryCache is {@code true} or isFirstImage is {@code false}, returns a 32 * {@link com.bumptech.glide.request.animation.NoAnimation} and otherwise returns a new 33 * {@link com.bumptech.glide.request.animation.ViewAnimation}. 34 * 35 * @param isFromMemoryCache {@inheritDoc} 36 * @param isFirstResource {@inheritDoc} 37 */ 38 @Override 39 public GlideAnimation<R> build(boolean isFromMemoryCache, boolean isFirstResource) { 40 if (isFromMemoryCache || !isFirstResource) { 41 return NoAnimation.get(); 42 } 43 44 if (glideAnimation == null) { 45 glideAnimation = new ViewAnimation<R>(animationFactory); 46 } 47 48 return glideAnimation; 49 } 50 51 private static class ConcreteAnimationFactory implements ViewAnimation.AnimationFactory { 52 private final Animation animation; 53 54 public ConcreteAnimationFactory(Animation animation) { 55 this.animation = animation; 56 } 57 58 @Override 59 public Animation build() { 60 return animation; 61 } 62 } 63 64 private static class ResourceAnimationFactory implements ViewAnimation.AnimationFactory { 65 private final Context context; 66 private final int animationId; 67 68 public ResourceAnimationFactory(Context context, int animationId) { 69 this.context = context.getApplicationContext(); 70 this.animationId = animationId; 71 } 72 73 @Override 74 public Animation build() { 75 return AnimationUtils.loadAnimation(context, animationId); 76 } 77 } 78 } 79
