<style name="SplashTheme" parent="AppTheme">
 <item name="android:windowFullscreen">true</item>
 <item name="android:windowIsTranslucent">true</item>
</style>

<activity android:name=".activity.SplashActivity"
 android:theme="@style/SplashTheme">
 <intent-filter>
  <action android:name="android.intent.action.MAIN" />

  <category android:name="android.intent.category.LAUNCHER" />
 </intent-filter>
</activity>

public class ActivityStack {
 // set to false to disable the preview that is shown while a new activity
 // is being started.
 static final boolean SHOW_APP_STARTING_PREVIEW = true;

 private final void startActivityLocked(ActivityRecord r, boolean newTask, boolean doResume) {
  final int NH = mHistory.size();

  int addPos = -1;

  // Place to new activity at top of stack, so it is next to interact
  // with the user.
  if (addPos < 0) {
   addPos = NH;
  }

  // Slot the activity into the history stack and proceed
  mHistory.add(addPos, r);

  if (NH > 0) {
   // We want to show the starting preview window if we are
   // switching to a new task, or the next activity's process is
   // not currently running.
   boolean showStartingIcon = newTasks;
   ProcessRecord proc = r.app;
   if (proc == null) {
    proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid);
   }
   if (proc == null || proc.thread == null) {
    showStartingIcon = true;
   }


  }
 }
}