When not collapsed some part of the the toolbar is visible over the ImageView of CollapsingToolbarLayout

问题

The CollapsingToolbarView works perfectly fine, but there is this unwanted strip on the ImageView of the collapsing toolbar.

As you can see below there is a red strip (possibly toolbar) after the status bar. How do I get rid of it?

     

Below is the relevant xml file:

fragment_movie.xml

<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_height="match_parent"
    android:layout_width="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.jayeshsolanki.mmdb.ui.fragment.MovieFragment">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerview_movie"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.design.widget.CollapsingToolbarLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:layout_scrollFlags="scroll|exitUntilCollapsed"
            app:contentScrim="?attr/colorPrimaryDark"
            app:title="@string/placeholder_movie_item_title">

            <ImageView
                android:id="@+id/backdrop_movie"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:scaleType="centerCrop"
                android:adjustViewBounds="true"
                app:layout_collapseMode="parallax"
                tools:src="@drawable/placeholder_movie_item_backdrop"/>

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar_movie"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                app:layout_collapseMode="pin"/>

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

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

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

The theme for the parent activity is set as "@style/AppTheme.NoActionBar" in the Manifest.

回答1:

android:fitsSystemWindows="true" is supposed to be on CoordinatorLayout, AppBarLayout, CollapsingToolbarLayout and the ImageView inside it.

回答2:

Try removing adjustViewBounds attribute from image. You're using centerCrop which should be enough for image to show properly and fill all space. By adjusting view bounds you're preserving aspect ratio, so the image doesn't fill the app bar space.

来源：https://stackoverflow.com/questions/37098519/when-not-collapsed-some-part-of-the-the-toolbar-is-visible-over-the-imageview-of