android帧动画太多太卡（OOM）解决方案

IO工具类下载
- 使用方法

    private void initGif() {
         ivShowGif = (ImageView) view.findViewById(R.id.ivShowGif);
        /**
         * 弃用系统自带帧动画导致的性能占用。改用handler
         */
        MyAnimationDrawable.animateRawManuallyFromXML(R.drawable.anim_gift_forgif, ivShowGif,
                new Runnable() {

                    @Override
                    public void run() {
                        // TODO onStart
                    }
                }, new Runnable() {

                    @Override
                    public void run() {
                        // TODO onComplete
                    }
                });
```｝

 - 工具类






class="se-preview-section-delimiter">

package com.rex.p2pyichang.utils.gif;

/**
* Created by Rex on 2017/3/30.
*/

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.io.IOUtils;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

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;

/**
* 此工具类源于stack over flow
* 原文链接:http://stackoverflow.com/questio … nimation-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 {

private static boolean isLooper;

public static class MyFrame {
    byte[] bytes;
    int duration;
    Drawable drawable;
    boolean isReady = false;
}

public interface OnDrawableLoadedListener {
     void onDrawableLoaded(List myFrames);
}
/***
 * 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);
                }
            });
}

private static void loadRaw(final int resourceId, final Context context,
                            final OnDrawableLoadedListener onDrawableLoadedListener) {
    loadFromXml(resourceId, context, onDrawableLoadedListener);
}

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("oneshot")) {
                            isLooper = parser.getAttributeBooleanValue(0, true);
                        }


                        if (parser.getName().equals("item")) {
                            byte[] bytes = null;
                            int duration = 1000;

                            for (int i = 0; i < parser.getAttributeCount(); i++) {
                                if (parser.getAttributeName(i).equals(
                                        "drawable")) {
                                    int resId = Integer.parseInt(parser
                                            .getAttributeValue(i)
                                            .substring(1));
                                    bytes = IOUtils.toByteArray(context
                                            .getResources()
                                            .openRawResource(resId));
                                } else if (parser.getAttributeName(i)
                                        .equals("duration")) {
                                    duration = parser.getAttributeIntValue(
                                            i, 1000);
                                }
                            }

                            MyFrame myFrame = new MyFrame();
                            myFrame.bytes = bytes;
                            myFrame.duration = duration;
                            myFrames.add(myFrame);
                        }

                    } else if (eventType == XmlPullParser.END_TAG) {

                    } else if (eventType == XmlPullParser.TEXT) {

                    }

                    eventType = parser.next();
                }
            } catch (IOException e) {
                e.printStackTrace();
            } catch (XmlPullParserException e2) {
                // TODO: handle exception
                e2.printStackTrace();
            }

            // Run on UI Thread
            new Handler(context.getMainLooper()).post(new Runnable() {
                @Override
                public void run() {
                    if (onDrawableLoadedListener != null) {
                        onDrawableLoadedListener.onDrawableLoaded(myFrames);
                    }
                }
            });
        }
    }).run();
}

// 4
private static void animateRawManually(List 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 < myFrames.size()) {
                    MyFrame nextFrame = myFrames.get(frameNumber + 1);

                    if (nextFrame.isReady) {
                        // Animate next frame
                        animateRawManually(myFrames, imageView, onComplete,
                                frameNumber + 1);
                    } else {
                        nextFrame.isReady = true;
                    }
                } else {
                    animateRawManually(myFrames, imageView, onComplete,
                           0);

                    if (onComplete != null) {
                        onComplete.run();
                    }
                }
            }
        }
    }, thisFrame.duration);

    // Load next frame
    if (frameNumber + 1 < myFrames.size()) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                MyFrame nextFrame = myFrames.get(frameNumber + 1);
                nextFrame.drawable = new BitmapDrawable(imageView
                        .getContext().getResources(),
                        BitmapFactory.decodeByteArray(nextFrame.bytes, 0,
                                nextFrame.bytes.length));
                if (nextFrame.isReady) {
                    // Animate next frame
                    animateRawManually(myFrames, imageView, onComplete,
                            frameNumber + 1);
                } else {
                    nextFrame.isReady = true;
                }

            }
        }).run();
    }
}

}

“`