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>