Android解码/显示/播放Gif图片动画

Android系统默认不支持Gif图片的播放，需要自定义工具类对Gif图片进行解码、显示和播放动画。至于怎么解码Gif图片，这里在别人的代码基础进行了修改：GifFrame、GifHelper等。

1、GifActivity循环播放类

package com.orgcent.gif;

import java.io.InputStream;

import android.app.Activity;

import android.os.Bundle;

import android.view.ViewGroup.LayoutParams;

import android.widget.ImageView;

import android.widget.TextView;

import android.widget.ImageView.ScaleType;

import com.orgcent.gif.GifHelper.GifFrame;

public class AndroidGifActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

TextView tv = new TextView(this);

tv.setText("Android Gif Activity");

setContentView(tv,new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));

final ImageView iv = new ImageView(this);

iv.setScaleType(ScaleType.CENTER);

setContentView(iv, new LayoutParams(LayoutParams.FILL_PARENT,

LayoutParams.FILL_PARENT));

//对Gif图片进行解码

final InputStream is = getResources().openRawResource(R.drawable.cell_orig);

final GifFrame[] frames = CommonUtil.getGif(is);

System.out.println("delay:" + frames[1].delay + ",size:" + frames.length);

mGifTask = new PlayGifTask(iv, frames);

mGifTask.start();

}

@Override

protected void onDestroy() {

super.onDestroy();

if(null != mGifTask) mGifTask.stop();

}

private PlayGifTask mGifTask;

//用来循环播放Gif每帧图片

private static class PlayGifTask implements Runnable {

int i = 0;

ImageView iv;

GifFrame[] frames;

public PlayGifTask(ImageView iv, GifFrame[] frames) {

this.iv = iv;

this.frames = frames;

}

@Override

public void run() {

if (!frames[i].image.isRecycled()) {

iv.setImageBitmap(frames[i].image);

}

iv.postDelayed(this, frames[i++].delay);

i %= frames.length;

}

public void start() {

iv.post(this);

}

public void stop() {

if(null != iv) iv.removeCallbacks(this);

iv = null;

if(null != frames) {

for(GifFrame frame : frames) {

if(frame.image != null && !frame.image.isRecycled()) {

frame.image.recycle();

frame.image = null;

}

}

frames = null;

}

}

}

}

转载：Android解码/显示/播放Gif图片动画 |http://orgcent.com/android-decode-gif-play-animation/

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