<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
  android:oneshot=["true" | "false"] >
  <item
    android:drawable="@[package:]drawable/drawable_resource_name"
    android:duration="integer" />
</animation-list>

<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
  android:oneshot="false">
  <item android:drawable="@drawable/f1" android:duration="300" />
  <item android:drawable="@drawable/f2" android:duration="300" />
  <item android:drawable="@drawable/f3" android:duration="300" />
  <item android:drawable="@drawable/f4" android:duration="300" />
</animation-list>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent">
 <ImageView
  android:id="@+id/frame_image"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:layout_weight="1"/>
 <Button
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="stopFrame"
  android:onClick="stopFrame"/>
 <Button
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="runFrame"
  android:onClick="runFrame"/>
</LinearLayout>

package com.scott.anim;
import android.app.Activity;
import android.graphics.drawable.AnimationDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
public class FrameActivity extends Activity {
  private ImageView image;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.frame);
    image = (ImageView) findViewById(R.id.frame_image);
    image.setBackgroundResource(R.anim.frame);
    AnimationDrawable anim = (AnimationDrawable) image.getBackground();
    anim.start();
  }
}

package com.scott.anim;
import android.app.Activity;
import android.graphics.drawable.AnimationDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
public class FrameActivity extends Activity {
  private ImageView image;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.frame);
    image = (ImageView) findViewById(R.id.frame_image);
  }
  @Override
  public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);
    image.setBackgroundResource(R.anim.frame);
    AnimationDrawable anim = (AnimationDrawable) image.getBackground();
    anim.start();
  }
}

AnimationDrawable anim = new AnimationDrawable();
for (int i = 1; i <= 4; i++) {
  int id = getResources().getIdentifier("f" + i, "drawable", getPackageName());
  Drawable drawable = getResources().getDrawable(id);
  anim.addFrame(drawable, 300);
}
anim.setOneShot(false);
image.setBackgroundDrawable(anim);
anim.start();

package com.scott.anim;
import android.app.Activity;
import android.graphics.drawable.AnimationDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
public class FrameActivity extends Activity {
  private ImageView image;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.frame);
    image = (ImageView) findViewById(R.id.frame_image);
  }
  @Override
  public void onWindowFocusChanged(boolean hasFocus) {
    super.onWindowFocusChanged(hasFocus);
    image.setBackgroundResource(R.anim.frame); //将动画资源文件设置为ImageView的背景
    AnimationDrawable anim = (AnimationDrawable) image.getBackground(); //获取ImageView背景,此时已被编译成AnimationDrawable
    anim.start();  //开始动画
  }
  public void stopFrame(View view) {
    AnimationDrawable anim = (AnimationDrawable) image.getBackground();
    if (anim.isRunning()) { //如果正在运行,就停止
      anim.stop();
    }
  }
  public void runFrame(View view) {
    //完全编码实现的动画效果
    AnimationDrawable anim = new AnimationDrawable();
    for (int i = 1; i <= 4; i++) {
      //根据资源名称和目录获取R.java中对应的资源ID
      int id = getResources().getIdentifier("f" + i, "drawable", getPackageName());
      //根据资源ID获取到Drawable对象
      Drawable drawable = getResources().getDrawable(id);
      //将此帧添加到AnimationDrawable中
      anim.addFrame(drawable, 300);
    }
    anim.setOneShot(false); //设置为loop
    image.setBackgroundDrawable(anim); //将动画设置为ImageView背景
    anim.start();  //开始动画
  }
}