Android解码/展示/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;

??????????? }

??????? }

??? }

}

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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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