Can't set active item of BottomNavigationView while recreating app

Question

Can't set active item of BottomNavigationView while recreating app: the last selected item is active after recreating app, so BottomNavigationView.setSelectedItemId(R.id.item0) takes no visual effect, but onNavigationItemSelected was called succeessfully.

So how can I prevent restoring previous active item of BNV? Thanks.

Where you used `BottomNavigationView.setSelectedItemId(R.id.item0)` ? — , Mar 10 '18 at 12:43
@Ibrahim but in this case how can I check if app wasn't recreated but just switched foreground? — Konstantin Konopko, Mar 10 '18 at 12:48
In fact, if your app recreated the selected item will be `item0` by default, I think your current behavior is when app go to the recent apps and open it again, so how you can check if app in recent app or not that's very easy. — , Mar 10 '18 at 12:51

score 1 · Accepted Answer · answered Mar 10 '18 at 12:59

You need to do that inside onResume() instead because while your app in the recent apps then the BottomNavigationView will always catch the position.

Why set position not work?

Because you set the position inside onCreate() which not invoked when app start from recent apps.

How to set the position then?

Inside in onStart() or onResume() and that will work.

How to check if app opened from recent-apps?

We can play with boolean e.g:

boolean isFromRecents = false;

onCreate(){
isFromRecents = true;
}

onResume(){
if(isFromRecents)
   //do smth
}

Can't set active item of BottomNavigationView while recreating app

1 Answers1