Android example source code file (AnimateDrawable.java)

This example Android source code file (AnimateDrawable.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

android, animatedrawable, animation, drawable, drawing, graphics, override, paint, proxydrawable, transformation, ui, view

The AnimateDrawable.java Android example source code

/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.apis.graphics;

import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.view.animation.Transformation;

public class AnimateDrawable extends ProxyDrawable {
    
    private Animation mAnimation;
    private Transformation mTransformation = new Transformation();

    public AnimateDrawable(Drawable target) {
        super(target);
    }
    
    public AnimateDrawable(Drawable target, Animation animation) {
        super(target);
        mAnimation = animation;
    }
    
    public Animation getAnimation() {
        return mAnimation;
    }
    
    public void setAnimation(Animation anim) {
        mAnimation = anim;
    }

    public boolean hasStarted() {
        return mAnimation != null && mAnimation.hasStarted();
    }
    
    public boolean hasEnded() {
        return mAnimation == null || mAnimation.hasEnded();
    }
    
    @Override
    public void draw(Canvas canvas) {
        Drawable dr = getProxy();
        if (dr != null) {
            int sc = canvas.save();
            Animation anim = mAnimation;
            if (anim != null) {
                anim.getTransformation(
                                    AnimationUtils.currentAnimationTimeMillis(),
                                    mTransformation);
                canvas.concat(mTransformation.getMatrix());
            }
            dr.draw(canvas);
            canvas.restoreToCount(sc);
        }
    }
}