62 lines
1.9 KiB
Java
62 lines
1.9 KiB
Java
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.graphics.drawable;
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import android.annotation.NonNull;
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/**
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* Abstract class that drawables supporting animations and callbacks should extend.
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*/
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public interface Animatable2 extends Animatable {
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/**
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* Adds a callback to listen to the animation events.
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*
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* @param callback Callback to add.
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*/
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void registerAnimationCallback(@NonNull AnimationCallback callback);
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/**
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* Removes the specified animation callback.
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*
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* @param callback Callback to remove.
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* @return {@code false} if callback didn't exist in the call back list, or {@code true} if
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* callback has been removed successfully.
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*/
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boolean unregisterAnimationCallback(@NonNull AnimationCallback callback);
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/**
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* Removes all existing animation callbacks.
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*/
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void clearAnimationCallbacks();
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public static abstract class AnimationCallback {
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/**
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* Called when the animation starts.
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*
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* @param drawable The drawable started the animation.
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*/
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public void onAnimationStart(Drawable drawable) {};
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/**
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* Called when the animation ends.
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*
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* @param drawable The drawable finished the animation.
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*/
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public void onAnimationEnd(Drawable drawable) {};
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}
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}
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