click on Back Arrow in Toolbar programmatically

Question

hi i have an activity and I display 2 frigments I want to automatically close the toolbar when the back button is clicked

How can I do this? Should the code be written in an activity or in a fragment?

Answer 1

Do it in an activity:

boolean toolbarIsOpened = false;

@Override
public void onBackPressed() {
    if (toolbarIsOpened){
        //closeToolbar
        toolbar.animate().translationY(-toolbar.getBottom()).setInterpolator(new AccelerateInterpolator()).start();
    }else{
        int count = getSupportFragmentManager().getBackStackEntryCount();

        if (count == 0) {
            super.onBackPressed();
        } else {
            getSupportFragmentManager().popBackStack();
        }
    }
}

Another way to hide:

getSupportActionBar().hide();

Press "back arrow" programmatically:

onBackPressed();