Screenservice issue

[MahendranB]

When i navigate to another page from screenhome ,
its show nullpointer exception in 'ScreenService.class'

java.lang.NullPointerException: Attempt to invoke virtual method 'android.app.LocalActivityManager com.example.tevateldev16.eventapp.Main.getLocalActivityManager()' on a null object reference

on the line 'Intent intent = new Intent(mainActivity, cls);'

when i debug it cls has some value but mainActivity is having empty value

i have updated gradle version to 3.0.1