CoordinatorLayout(AppbarLayout) does not draw toolbar properly

Question

I am using the new design support library to achieve scroll to hide toolbar. However, every thing works well if I don\'t load images by picasso. If I load images, sometimes

Answer 1

<android.support.design.widget.CoordinatorLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

       <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:layout_scrollFlags="scroll|enterAlways" />

       <View
        android:layout_width="fill_parent"
        android:layout_height="1dp"/>

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

    <FrameLayout
        android:id="@+id/main"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

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

Try this. I solved same problem by this snippet. I appended dummy view which has height of 1dp after the Toolbar.