Android Frame Animation

在xml中定义<animation-list.../> 轮换定义在其中图片资源

<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
    android:oneshot="false" >
    <!-- 
    	oneshot = true 表示只执行一次，item依次执行
    			  false 表示循环执行，
     -->

    <item
        android:drawable="@drawable/a11"
        android:duration="1200"/>
    <!-- duration 图片显示的持续时间  -->
    <item
        android:drawable="@drawable/a2"
        android:duration="1200"/>
    <item
        android:drawable="@drawable/a3"
        android:duration="1200"/>

</animation-list>

package com.stone.ui;

import android.app.Activity;
import android.graphics.drawable.AnimationDrawable;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;

import com.stone.R;

public class AnimationActivity extends Activity {
	ImageView imageview;

	AnimationDrawable drawable1;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		setContentView(R.layout.animation_main);
		imageview = (ImageView) findViewById(R.id.imageview);
		
		drawable1 = (AnimationDrawable) getResources().getDrawable(R.drawable.drawable1);
		imageview.setBackgroundDrawable(drawable1);
	}

	public boolean onTouchEvent(MotionEvent event) {
		if (event.getAction() == MotionEvent.ACTION_DOWN) {
			drawable1.start();
			return true;
		}
		return super.onTouchEvent(event);
	}
	
	@Override //window焦点改变 使动画自动开始
	public void onWindowFocusChanged(boolean hasFocus) {
		super.onWindowFocusChanged(hasFocus);
		if (hasFocus) {
			//start不能直接用在onCreate中，因为此时，AnimationDrawable还没有完全在window中建立好。
			drawable1.start();
		}
	}
}