动画实现

[android]代码库

package com.example.ch08_5_frameanimation;

import android.app.Activity;			//引入相关类
import android.graphics.drawable.AnimationDrawable;	//引入相关类
import android.os.Bundle;		//引入相关类
import android.view.View;		//引入相关类
import android.view.View.OnClickListener;	//引入相关类
import android.widget.Button;	//引入相关类
import android.widget.ImageView;	//引入相关类

public class FrameActivity extends Activity {
	 @Override
	    public void onCreate(Bundle savedInstanceState) {	//重写onCreate方法
	        super.onCreate(savedInstanceState);
	        setContentView(R.layout.main);
	        Button btn = (Button)findViewById(R.id.btn);
	        btn.setOnClickListener(new OnClickListener() {	//为按钮设置监听器
				@Override	
				public void onClick(View v) {			//重写onClick方法
			        ImageView iv = (ImageView)findViewById(R.id.iv);
			        iv.setBackgroundResource(R.anim.hero_left);
			        AnimationDrawable ad = (AnimationDrawable)iv.getBackground();
			        ad.start();		                    //启动AnimationDrawable
			       
				}
				
			});
	        Button btn1 = (Button)findViewById(R.id.btn1);
	        btn1.setOnClickListener(new OnClickListener() {	//为按钮设置监听器
				@Override	
				public void onClick(View v) {			//重写onClick方法
			        ImageView iv = (ImageView)findViewById(R.id.iv);
			        iv.setBackgroundResource(R.anim.hero_right);
			        AnimationDrawable ad = (AnimationDrawable)iv.getBackground();
			        ad.start();		                    //启动AnimationDrawable
					}
			});
	    }
	 
	 
	 
	}

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