动画监听

准备一张名为picture的图片。

在main.xml中：

<LinearLayout

android:id="@+id/group"

xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:background="#000000"

android:orientation="vertical"

android:gravity="center_horizontal">

<ImageView

android:id="@+id/mlyw"

android:layout_marginTop="8dp"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:src="@drawable/picture"/>

</LinearLayout>

在MyAnimationDemo.java中：

package com.li.animation;

import android.app.Activity;

import android.os.Bundle;

import android.view.ViewGroup;

import android.view.animation.AlphaAnimation;

import android.view.animation.Animation;

import android.view.animation.Animation.AnimationListener;

import android.view.animation.AnimationSet;

import android.view.animation.TranslateAnimation;

import android.widget.ImageView;

public class MyAnimationDemo extends Activity {

private ImageView mlyw = null;

private ViewGroup group = null ;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

super.setContentView(R.layout.main);

this.mlyw = (ImageView) super.findViewById(R.id.mlyw);

this.group = (ViewGroup) super.findViewById(R.id.group);

AnimationSet set = new AnimationSet(true);

TranslateAnimation tran = new TranslateAnimation(

Animation.RELATIVE_TO_SELF,0.0f , // X轴开始位置

Animation.RELATIVE_TO_SELF,0.5f , // X轴移动的结束位置

Animation.RELATIVE_TO_SELF,0.0f , // Y轴开始位置

Animation.RELATIVE_TO_SELF,1.5f ); // Y轴移动位置

tran.setDuration(6000); // 3秒完成动画

set.addAnimation(tran); // 增加动画

set.setAnimationListener(new AnimationListenerImpl()) ;

this.mlyw.startAnimation(set); // 启动动画

}

private class AnimationListenerImpl implements AnimationListener {

public void onAnimationEnd(Animation animation) {

MyAnimationDemo.this.group.removeView(MyAnimationDemo.this.mlyw) ;

}

public void onAnimationRepeat(Animation animation) {

}

public void onAnimationStart(Animation animation) {

if(animation instanceof AnimationSet) {

AnimationSet set = (AnimationSet) animation ;

AlphaAnimation alpha = new AlphaAnimation(1, 0);

alpha.setDuration(3000) ;

set.addAnimation(alpha) ;

}

}

}

}