Android簡單的開機動畫

MainActivity如下:

package com.cn.testanimation;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.animation.Animation;import android.view.animation.Animation.AnimationListener;import android.view.animation.AnimationUtils;import android.widget.ImageView;import android.widget.Toast;public class MainActivity extends Activity {   private ImageView imageView;   private Animation welcomeAnimation;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        imageView=(ImageView) findViewById(R.id.imageView);        welcomeAnimation=AnimationUtils.loadAnimation(this, R.anim.welcome);        imageView.startAnimation(welcomeAnimation);        welcomeAnimation.setAnimationListener(new AnimationListener() {public void onAnimationStart(Animation animation) {}public void onAnimationRepeat(Animation animation) {}     public void onAnimationEnd(Animation animation) {//Tip:動畫結束時,利用Intent跳轉到下個ActivityToast.makeText(getApplicationContext(), "準備跳轉到下一個頁面", 0).show();}});    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.activity_main, menu);        return true;    }}

main.xml如下:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent" >   <ImageView        android:id="@+id/imageView"       android:layout_width="fill_parent"       android:layout_height="fill_parent"       android:background="@drawable/ic_launcher"   /></RelativeLayout>

welcome.xml動畫如下:

<?xml version="1.0" encoding="utf-8"?><!-- Alpha=1.0表示不透明,Alpha=0.0表示透明 --><set     xmlns:android="http://schemas.android.com/apk/res/android"    android:interpolator="@android:anim/decelerate_interpolator" >    <alpha        android:duration="4000"        android:fromAlpha="0.0"        android:toAlpha="1.0"     /></set>