fix(android): prevent showing base activity

android/titanium/src/java/org/appcelerator/titanium/TiApplication.java

@@ -69,6 +69,7 @@ public abstract class TiApplication extends Application implements KrollApplicat
 	private static final String PROPERTY_DEFAULT_UNIT = "ti.ui.defaultunit";
 	private static final String PROPERTY_USE_LEGACY_WINDOW = "ti.android.useLegacyWindow";
 	private static long mainThreadId = 0;
+	private static boolean isDevelopment = false;
 
 	protected static TiApplication tiApp = null;
 
@@ -161,7 +162,6 @@ public TiApplication()
 		tiApp = this;
 
 		mainThreadId = Looper.getMainLooper().getThread().getId();
-
 		modules = new HashMap<>();
 		TiMessenger.getMessenger(); // initialize message queue for main thread
 	}
@@ -190,6 +190,24 @@ public static boolean firstOnActivityStack()
 	public static void addToActivityStack(Activity activity)
 	{
 		if (activity != null) {
+			if (!isDevelopment && activityStack.size() > 0) {
+				// only in production builds:
+				// remove root activity if another activity is opened
+				WeakReference<Activity> activityRef;
+				Activity currentActivity;
+				activityRef = activityStack.get(0);
+
+				if (activityRef.get() instanceof TiRootActivity) {
+					activityStack.remove(activityRef);
+					if (activityRef != null) {
+						currentActivity = activityRef.get();
+						if (currentActivity != null && !currentActivity.isFinishing()) {
+							currentActivity.finish();
+						}
+					}
+				}
+			}
+
 			activityStack.add(new WeakReference<>(activity));
 		}
 	}
@@ -345,6 +363,7 @@ public void onCreate()
 	{
 		super.onCreate();
 		Log.d(TAG, "Application onCreate", Log.DEBUG_MODE);
+		isDevelopment = !TiApplication.getInstance().getDeployType().equals(TiApplication.DEPLOY_TYPE_PRODUCTION);
 
 		// handle uncaught java exceptions
 		Thread.setDefaultUncaughtExceptionHandler(new UncaughtExceptionHandler() {