message: the app should be vertical only
diff: android:label="@string/app_name"
  android:configChanges="keyboard|keyboardHidden|orientation|screenSize|uiMode"
  android:launchMode="singleTask"
  + android:screenOrientation = "portrait"
  android:windowSoftInputMode="adjustResize">
  <intent-filter>
  <action android:name="android.intent.action.MAIN" />
  