Android惯用动画alpha和rotate同时使用

Android的动画可以是一种动画，也可以多种动画作用于一张图片上，如RotaeAnimation和AlphaAnimation同时放到一个配置文件中

alpha1.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"    android:interpolator="@android:anim/accelerate_interpolator" >    <alpha        android:duration="3000"        android:fromAlpha="1.0"        android:toAlpha="0.0"        android:startOffset="500" />        <rotate        android:duration="3000"        android:fromDegrees="0"        android:pivotX="50%"        android:pivotY="50%"        android:toDegrees="+360" /></set>

package com.example.animation;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.view.animation.Animation;import android.view.animation.AnimationUtils;import android.widget.Button;import android.widget.ImageView;import com.example.widgetdemo.R;public class AnimationXmlDemo2 extends Activity{	private Button alpha = null;	private ImageView image = null;	@Override	protected void onCreate(Bundle savedInstanceState) {		// TODO Auto-generated method stub		super.onCreate(savedInstanceState);		setContentView(R.layout.animation_xml2);		alpha = (Button) findViewById(R.id.alpha);		image = (ImageView) findViewById(R.id.image);		alpha.setOnClickListener(new alphaListener());	}		class alphaListener implements OnClickListener {		@Override		public void onClick(View arg0) {			// TODO Auto-generated method stub			Animation animation = AnimationUtils.loadAnimation(AnimationXmlDemo2.this, R.anim.alpha1);			image.startAnimation(animation);		}	}}

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