<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;
  }


 }
 }
}