andriod一个不错的启动菜单显示屏动画效果

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> 

 

4 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>   

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