Hitting the back button doesn't dismiss the sheet. about bottomsheet HOT 5 CLOSED

class BottomSheet : BottomSheetDialogFragment() {

override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
    return object: BottomSheetDialog(requireContext(), theme) {
        override fun onBackPressed() {
            // Handle backpress in here
        }
    }
}

}

from bottomsheet.

Unfortunately there's no easy way to handle this since the sheet is part of the activity's view hierarchy. We handle this in a base activity class, and you can see an example in the sample code's MainActivity

It's not pretty, but unless Activity has a secret addOnBackPressListener() API that we're not aware of, I don't see any better solutions. It's mitigated by stuffing it down into a base class. Open to ideas though, any thoughts?

For the record, the system share sheet (and Google Drive I think) get away with this by showing the sheet in a transparent activity on top of the current activity

from bottomsheet.

Of course there is a way to do this, DrawerLayout does. You have to override onKeyDown() and onKeyUp() and listen for keyCode == KeyEvent.KEYCODE_BACK. See http://grepcode.com/file/repository.grepcode.com/java/ext/com.google.android/android/4.3_r1/android/support/v4/widget/DrawerLayout.java#DrawerLayout.onKeyDown%28int%2Candroid.view.KeyEvent%29

from bottomsheet.

Ah true, I always forget it shows up as a KeyEvent. We're going to look into that PR tomorrow, thanks for the suggestion!

from bottomsheet.

@OverRide
public void onBackPressed() {
if (mBottomSheetBehavior.isHideable()) {
super.onBackPressed();
}else {
mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
}
}

from bottomsheet.