andriod一个不错的启动菜单显示屏动画效果

效果图：

看到一个老外做的不错的android启动菜单的动画效果，小结下。 
1 首先在drawable目录下放一些动画要用的图片。

2 splash.xml:

<?xml version="1.0" encoding="utf-8"?> 
    <LinearLayout
      xmlns:android="http://schemas.android.com/apk/res/android 
    android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:id="@+id/TheSplashLayout"
      android:layout_gravity="center"
      > 
    <ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/SplashImageView"
    android:layout_gravity="center"       
    > 
    </ImageView>
    

　　3 点启动窗口动画效果后显示的main.xml

<?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"
        /> 
    <TextView 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello"
        /> 
    </LinearLayout> 
    

　　

3 SplashScreen.java

这里是欢迎启动类的核心部分

public class SplashScreen extends Activity {
       /** 
         * The thread to process splash screen events 
         */
        private Thread mSplashThread;       /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState);    // Splash screen view 
        setContentView(R.layout.splash); 
         
            // Start animating the image 
        final ImageView splashImageView = (ImageView) findViewById(R.id.SplashImageView); 
        splashImageView.setBackgroundResource(R.drawable.flag); 
        final AnimationDrawable frameAnimation = (AnimationDrawable)splashImageView.getBackground(); 
        splashImageView.post(new Runnable(){ public void run() { 
    frameAnimation.start();        
    }            
        }); 
             
         
        final SplashScreen sPlashScreen = this;   
         
        // The thread to wait for splash screen events 
        mSplashThread =  new Thread(){ 
        @Override
        public void run(){ 
        try { 
        synchronized(this){ 
        // Wait given period of time or exit on touch 
        wait(5000); 
        } 
        } 
        catch(InterruptedException ex){    
        }finish(); 
         
        // Run next activity 
        Intent intent = new Intent(); 
        intent.setClass(sPlashScreen, MainActivity.class); 
        startActivity(intent); 
        stop();     
        } 
        }; 
         
        mSplashThread.start(); 
         
    }@Override
    public boolean onCreateOptionsMenu(Menu menu){ 
    super.onCreateOptionsMenu(menu); 
    return false; 
    } 
       
        /** 
         * Processes splash screen touch events 
         */
        @Override
        public boolean onTouchEvent(MotionEvent evt) 
        { 
        if(evt.getAction() == MotionEvent.ACTION_DOWN) 
        { 
        synchronized(mSplashThread){ 
        mSplashThread.notifyAll(); 
        } 
        } 
        return true; 
        } 
     
    

　4 为了更好看，在values 目录下添加样式文件styles.xml:　

 <resources> 
    <style name="Animations" parent="@android:Animation" /> 
    <style name="Animations.SplashScreen"> 
            <item name="android:windowEnterAnimation">@anim/appear</item> 
            <item name="android:windowExitAnimation">@anim/disappear</item> 
        </style> 
    <style name="Theme.Transparent" parent="android:Theme"> 
    <item name="android:windowIsTranslucent">true</item> 
    <item name="android:windowBackground">@android:color/transparent</item> 
    <item name="android:windowContentOverlay">@null</item> 
    <item name="android:windowNoTitle">true</item> 
    <item name="android:windowIsFloating">true</item> 
    <item name="android:backgroundDimEnabled">false</item> 
    <item name="android:windowAnimationStyle">@style/Animations.SplashScreen</item>        
    </style>        
    </resources> 
    

　注意下这里：

<style name="Animations" parent="@android:Animation" /> 
    <style name="Animations.SplashScreen"> 
            <item name="android:windowEnterAnimation">@anim/appear</item> 
            <item name="android:windowExitAnimation">@anim/disappear</item> 
        </style>
    

　　源码下载：https://files.cnblogs.com/feifei1010/AdvancedSplashDemo.zip

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