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);
}

Answer 2

If you are using AppBarLayout in toolbar, you can use: app:elevation="0dp" instead of android:elevation in AppBarLayout

Answer 3

Use app:elevation="0dp" instead of android:elevation on your toolbar. If it is not work, put your toolbar inside of a AppBarLayout and set app:elevation="0dp":

<android.support.design.widget.AppBarLayout
            android:id="@+id/appBarLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:elevation="0dp">
            ...
</android.support.design.widget.AppBarLayout>

Answer 4

set "#00000000" to the backgroundColor of toolbar , remember that: if you use CoordinatorLayout and AppBarLayout ,you should remove the app:layout_behavior="@string/appbar_scrolling_view_behavior" of your contentView , I have made this elementary mistake.