Android开发基础：如何创建启动界面Splash Screen
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
????? package="com.ctoof.android"
????? android:versionCode="1"
????? android:versionName="1.0">
??? <application android:icon="@drawable/icon" android:label="@string/app_name">
??????? <activity android:name=".SplashScreen"
????????????????? android:label="@string/app_name">
??????????? <intent-filter>
??????????????? <action android:name="android.intent.action.MAIN" />
??????????????? <category android:name="android.intent.category.LAUNCHER" />
??????????? </intent-filter>
??????? </activity>
??????? <activity android:name=".MyApp">
??????????? <intent-filter>
??????????????? <action android:name=" com.ctoof.android. MySample.MyApp " />
??????????????? <category android:name="android.intent.category.DEFAULT" />
??????????? </intent-filter>
??????? </activity>
??? </application>
??? <uses-sdk android:minSdkVersion="4" />
</manifest>

在这里负责注册两个活动。把负责管理启动界面Splash Screen的活动Activity作为应用程序的主活动，然后在SplashScreen中负责启动MyApp。