Android常用动画alpha和rotate同时使用

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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);
}}
}