Android使用帧动画内存溢出解决方案

<&＃63;xml version="1.0" encoding="utf-8"&＃63;> 
 
  
   
   
   
   
   
   
   
   
   
 

search_scale_iv.setBackgroundResource(R.drawable.anim_search); 
    AnimationDrawable drawable = (AnimationDrawable) search_scale_iv.getBackground(); 
    drawable.start(); 

import android.content.Context; 
import android.content.res.XmlResourceParser; 
import android.graphics.BitmapFactory; 
import android.graphics.drawable.AnimationDrawable; 
import android.graphics.drawable.BitmapDrawable; 
import android.graphics.drawable.Drawable; 
import android.os.Handler; 
import android.widget.ImageView; 
 
import org.apache.commons.io.IOUtils; 
import org.xmlpull.v1.XmlPullParser; 
import org.xmlpull.v1.XmlPullParserException; 
 
import java.io.IOException; 
import java.util.ArrayList; 
import java.util.List; 
 
/**** 
 * 此工具类源于stack over flow 
 * 原文链接:http://stackoverflow.com/questions/8692328/causing-outofmemoryerror-in-frame-by-frame-animation-in-android 
 * 主要使用了BitmapFactory.decodeByteArray方法通过底层C来绘制图片,有效防止OOM 
 * 使用了第三方类库:org.apache.commons.io.IOUtils,将Inputstream转为byte字节数组 
 * *******/ 
public class MyAnimationDrawable { 
 
  public static class MyFrame { 
    byte[] bytes; 
    int duration; 
    Drawable drawable; 
    boolean isReady = false; 
  } 
 
  public interface OnDrawableLoadedListener { 
    public void onDrawableLoaded(List myFrames); 
  } 
 
  // 1 
  /*** 
   * 性能更优 
   * 在animation-list中设置时间 
   * **/ 
  public static void animateRawManuallyFromXML(int resourceId, 
                         final ImageView imageView, final Runnable onStart, 
                         final Runnable onComplete) { 
    loadRaw(resourceId, imageView.getContext(), 
        new OnDrawableLoadedListener() { 
          @Override 
          public void onDrawableLoaded(List myFrames) { 
            if (onStart != null) { 
              onStart.run(); 
            } 
            animateRawManually(myFrames, imageView, onComplete); 
          } 
        }); 
  } 
 
  // 2 
  private static void loadRaw(final int resourceId, final Context context, 
                final OnDrawableLoadedListener onDrawableLoadedListener) { 
    loadFromXml(resourceId, context, onDrawableLoadedListener); 
  } 
 
  // 3 
  private static void loadFromXml(final int resourceId, 
                  final Context context, 
                  final OnDrawableLoadedListener onDrawableLoadedListener) { 
    new Thread(new Runnable() { 
      @Override 
      public void run() { 
        final ArrayList myFrames = new ArrayList(); 
 
        XmlResourceParser parser = context.getResources().getXml( 
            resourceId); 
 
        try { 
          int eventType = parser.getEventType(); 
          while (eventType != XmlPullParser.END_DOCUMENT) { 
            if (eventType == XmlPullParser.START_DOCUMENT) { 
 
            } else if (eventType == XmlPullParser.START_TAG) { 
 
              if (parser.getName().equals("item")) { 
                byte[] bytes = null; 
                int duration = 1000; 
 
                for (int i = 0; i  myFrames, 
                      ImageView imageView, Runnable onComplete) { 
    animateRawManually(myFrames, imageView, onComplete, 0); 
  } 
 
  // 5 
  private static void animateRawManually(final List myFrames, 
                      final ImageView imageView, final Runnable onComplete, 
                      final int frameNumber) { 
    final MyFrame thisFrame = myFrames.get(frameNumber); 
 
    if (frameNumber == 0) { 
      thisFrame.drawable = new BitmapDrawable(imageView.getContext() 
          .getResources(), BitmapFactory.decodeByteArray( 
          thisFrame.bytes, 0, thisFrame.bytes.length)); 
    } else { 
      MyFrame previousFrame = myFrames.get(frameNumber - 1); 
      ((BitmapDrawable) previousFrame.drawable).getBitmap().recycle(); 
      previousFrame.drawable = null; 
      previousFrame.isReady = false; 
    } 
 
    imageView.setImageDrawable(thisFrame.drawable); 
    new Handler().postDelayed(new Runnable() { 
      @Override 
      public void run() { 
        // Make sure ImageView hasn't been changed to a different Image 
        // in this time 
        if (imageView.getDrawable() == thisFrame.drawable) { 
          if (frameNumber + 1 

import org.apache.commons.io.IOUtils;

MyAnimationDrawable.animateRawManuallyFromXML(R.drawable.anim_search, 
            search_scale_iv, new Runnable() { 
 
              @Override 
              public void run() { 
                // TODO onStart 
                // 动画开始时回调 
                log.d("","start"); 
                 
              } 
            }, new Runnable() { 
 
              @Override 
              public void run() { 
                // TODO onComplete 
                // 动画结束时回调 
                log.d("","end"); 
                 
              } 
            });