Android中多个调用Activity的问题

 1  <application
 2         android:allowBackup="true"
 3         android:icon="@drawable/ic_launcher"
 4         android:label="@string/app_name"
 5         android:theme="@android:style/Theme.Light.NoTitleBar">
 6         
 7          <activity
 8             android:name="com.example.bmob_test.ui.SplashActivity"
 9             android:label="@string/app_name" >
10             <intent-filter>
11                 <action android:name="android.intent.action.MAIN" />
12                 <category android:name="android.intent.category.LAUNCHER" />
13             </intent-filter>
14          </activity>
15          
16         <activity
17             android:name=".MainActivity"
18             android:label="@string/app_name" >
19         </activity>
20                 
21          
22                
23     </application>