Android 中 Tweened animation的实例详解

<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android"> 
  <scale 
    android:interpolator="@android:anim/accelerate_decelerate_interpolator" 
    android:fromXScale="0.0" 
    android:toXScale="1.4" 
    android:fromYScale="0.0" 
    android:toYScale="1.4" 
    android:pivotX="50%" 
    android:pivotY="50%" 
    android:fillAfter="false" 
    android:startOffset="3000" 
    android:duration="3000" 
    android:repeatCount="4"/> 
</set> 

package com.android.animation; 
import android.app.Activity; 
import android.os.Bundle; 
import android.view.animation.Animation; 
import android.view.animation.AnimationUtils; 
import android.widget.ImageView; 
public class TestAnimation extends Activity { 
  /** Called when the activity is first created. */ 
  @Override 
  public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    ImageView imageView = (ImageView) findViewById(R.id.imageview); 
    Animation animation = AnimationUtils.loadAnimation(this, R.anim.animation); 
    imageView.startAnimation(animation); 
  } 
}