让ImageView可以使用gif的方法

在自己的包中添加MyGifView.java（直接复制，粘贴），读取gif资源在MyGifView中第20行读取：

MyGifView.java：

 1 package com.zzw.testgifuseimageview;
 2 
 3 import android.content.Context;
 4 import android.graphics.Canvas;
 5 import android.graphics.Movie;
 6 import android.util.AttributeSet;
 7 import android.view.View;
 8 
 9 
10 public class MyGifView extends View {
11 
12     private long movieStart;
13     private Movie movie;
14 
15     // 重写该构造方法
16     public MyGifView(Context context, AttributeSet attributeSet) {
17         super(context, attributeSet);
18 
19         // 以文件流（InputStream）读取进gif图片资源
20         movie = Movie.decodeStream(getResources().openRawResource(R.drawable.test));
21     }
22 
23     @Override
24     protected void onDraw(Canvas canvas) {
25         
26         long curTime = android.os.SystemClock.uptimeMillis();
27         
28         // 第一次播放
29         if (movieStart == 0) {
30             movieStart = curTime;
31         }
32         if (movie != null) {
33             int duraction = movie.duration();
34             int relTime = (int) ((curTime - movieStart) % duraction);
35             movie.setTime(relTime);
36             movie.draw(canvas, 0, 0);
37             // 强制重绘
38             invalidate();
39         }
40         
41         super.onDraw(canvas);
42     }
43 }

把要放gif图片的ImageView的名字改为包名.MyGifView

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.zzw.testgifuseimageview.MainActivity" >

    <com.zzw.testgifuseimageview.MyGifView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="20dp" />

</RelativeLayout>

MainActivity.java:

 1 package com.zzw.testgifuseimageview;
 2 
 3 import android.app.Activity;
 4 import android.os.Bundle;
 5 
 6 public class MainActivity extends Activity {
 7 
 8     @Override
 9     protected void onCreate(Bundle savedInstanceState) {
10         super.onCreate(savedInstanceState);
11         setContentView(R.layout.activity_main);
12     }
13 }