这一篇来使用逐帧动画和补间动画来实现一个小例子，首先我们来看看Android中的补间动画。

Android中使用Animation代表抽象的动画类，该类包括下面几个子类：

AlphaAnimation:透明改变动画。

ScaleAnimation:大小缩放动画。

TranslateAnimation:位移变化动画。

RotateAnimation:旋转动画。

我们下面使用位移动画和逐帧动画来实现这个小例子，先看看运行效果：

蝴蝶挥动翅膀的逐帧动画文件：

<?xml version="1.0" encoding="utf-8"?>
<!-- 定义动画循环播放 -->
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"android:oneshot="false"><item android:drawable="@drawable/butterfly_f01" android:duration="120" /><item android:drawable="@drawable/butterfly_f02" android:duration="120" /><item android:drawable="@drawable/butterfly_f03" android:duration="120" /><item android:drawable="@drawable/butterfly_f04" android:duration="120" /><item android:drawable="@drawable/butterfly_f05" android:duration="120" /><item android:drawable="@drawable/butterfly_f06" android:duration="120" />
</animation-list>

界面布局文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical"android:layout_width="fill_parent"android:layout_height="fill_parent"android:background="@drawable/background">
<ImageViewandroid:id="@+id/butterfly"android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@anim/butteryfly"/>
</LinearLayout>

具体逻辑及位移动画：

package com.example.butteryfly;import java.util.Timer;
import java.util.TimerTask;import android.app.Activity;
import android.graphics.drawable.AnimationDrawable;
import android.os.Bundle;
import android.os.Handler;
import android.view.Display;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;public class MainActivity extends Activity {private float curX = 0;private float curY = 30;private float nextX = 0;private float nextY = 0;private int windowW = 0;private int windowH = 0;private ImageView imageView;Handler handler = new Handler(){public void handleMessage(android.os.Message msg) {if(msg.what == 0x123){if(nextX > windowW || nextY > windowH){curX = nextX = 0;}else{nextX += 8;}nextY = curY + (float) (Math.random() * 20 - 10);TranslateAnimation anim = new TranslateAnimation(curX, nextX, curY, nextY);curX = nextX;curY = nextY;anim.setDuration(200);imageView.startAnimation(anim);}};};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);imageView = (ImageView) findViewById(R.id.butterfly);Display display = getWindowManager().getDefaultDisplay(); windowW = display.getWidth();windowH = display.getHeight();final AnimationDrawable butterfly = (AnimationDrawable) imageView.getBackground();imageView.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {butterfly.start();new Timer().schedule(new TimerTask() {@Overridepublic void run() {handler.sendEmptyMessage(0x123);}}, 0, 200);}});}
}