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package com.bumptech.glide.request.animation;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
/**
* An {@link com.bumptech.glide.request.animation.GlideAnimation} that can apply a
* {@link android.view.animation.Animation} to a {@link android.view.View} using
* {@link android.view.View#startAnimation(android.view.animation.Animation)}.
*/
public class ViewAnimation implements GlideAnimation {
/**
* A {@link com.bumptech.glide.request.animation.GlideAnimationFactory} that produces ViewAnimations.
*/
public static class ViewAnimationFactory implements GlideAnimationFactory {
private Animation animation;
private Context context;
private int animationId;
private GlideAnimation glideAnimation;
public ViewAnimationFactory(Animation animation) {
this.animation = animation;
}
public ViewAnimationFactory(Context context, int animationId) {
this.context = context;
this.animationId = animationId;
}
/**
* Returns a new {@link com.bumptech.glide.request.animation.GlideAnimation} for the given arguments. If
* isFromMemoryCache is {@code true} or isFirstImage is {@code false}, returns a
* {@link com.bumptech.glide.request.animation.NoAnimation} and otherwise returns a new
* {@link com.bumptech.glide.request.animation.ViewAnimation}.
*
* @param isFromMemoryCache {@inheritDoc}
* @param isFirstResource {@inheritDoc}
*/
@Override
public GlideAnimation build(boolean isFromMemoryCache, boolean isFirstResource) {
if (isFromMemoryCache || !isFirstResource) {
return NoAnimation.get();
}
if (glideAnimation == null) {
if (animation == null) {
animation = AnimationUtils.loadAnimation(context, animationId);
}
glideAnimation = new ViewAnimation(animation);
}
return glideAnimation;
}
}
private Animation animation;
/**
* Constructs a new ViewAnimation that will start the given {@link android.view.animation.Animation}.
* @param animation The animation to use.
*/
public ViewAnimation(Animation animation) {
this.animation = animation;
}
/**
* Always clears the current animation on the view using {@link android.view.View#clearAnimation()}, then
* starts the {@link android.view.animation.Animation} given in the constructor using
* {@link android.view.View#startAnimation(android.view.animation.Animation)} and then returns {@code false} because
* the animation does not actually set the current resource on the view.
*
* @param previous {@inheritDoc}
* @param current {@inheritDoc}
* @param view {@inheritDoc}
* @return {@inheritDoc}
*/
@Override
public boolean animate(Drawable previous, Object current, ImageView view) {
view.clearAnimation();
view.startAnimation(animation);
return false;
}
}
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