AppBarLayout with elevation=0dp does not respond to touch-events (click)

Question

I have used AppBarLayout inside a CoordinatorLayout, in my app. Because of certain design requirements, I was forced to remove the shadow below the AppBarLayout element, done by setting its elevation property to 0. (app:elevation="0"). After doing this the elements inside the AppBarLayout, the tabs does not respond to touch/click events.

By setting the elevation back to 1dp, the elements are responding to touch/click events, but then I am back to having a shadow...

Does anyone have a suggestion on how to make the elements respond to touch/click events while the AppBarLayout is at 0dp elevation?

Code extract:

  <android.support.design.widget.CoordinatorLayout
        android:id="@+id/rootLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.design.widget.AppBarLayout
            android:layout_width="match_parent"
            android:layout_height="@dimen/app_bar_height"
            app:elevation="0dp">

            <android.support.v7.widget.Toolbar
                android:id="@+id/my_toolbar"
                android:layout_height="wrap_content"
                android:layout_width="match_parent"
                android:minHeight="?attr/actionBarSize">

                <ImageView
                    android:layout_width="wrap_content"
                    android:layout_height="45dp"
                    android:scaleType="fitCenter"
                    android:layout_gravity="center"
                    android:id="@+id/toolbar_logo"
                    android:maxHeight="45dp"
                    android:contentDescription="Main logo"/>
            </android.support.v7.widget.Toolbar>

            <android.support.design.widget.TabLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:tabIndicatorColor="@color/tab_indicator_color"
                app:tabTextColor="@color/primary_text_grey"
                app:tabIndicatorHeight="3dp"
                android:id="@+id/tab_layout">
            </android.support.design.widget.TabLayout>

        </android.support.design.widget.AppBarLayout>.......

Answer 1

Solved this by replacing the CoordinatorLayout element with a LinearLayout with android:orientation="vertical". Using CoordinatorLayout seems to have been a wrong approach to this one.