Remove android.widget.Toolbar shadow

Question

Using API21+ Toolbar:

// Toolbar
Toolbar toolbar = new Toolbar(this);
toolbar.showOverflowMenu();

Would like to remove its shadow

Answer 1

Put this code in Fragment in which you want to hide the ToolBar.

@Override
public void onResume() {
    super.onResume();
    ((AppCompatActivity)getActivity()).getSupportActionBar().setElevation(0);
}