使用ScrollView(和NestedScrollView)时,CollapsingToolbarLayout不会折叠

Question

我试图使用ScrollView使用CollapsingToolbarLayout,但我没有让它工作.我试试这个:

<android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/collapsing_toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:fitsSystemWindows="true"
            app:contentScrim="?attr/colorPrimary"
            app:expandedTitleMarginEnd="64dp"
            app:expandedTitleMarginStart="48dp"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">


        <android.support.v4.widget.NestedScrollView
                android:layout_width="match_parent"
                android:layout_below="@+id/toolbar"
                android:scrollbars="none"
                android:overScrollMode="never"
                app:layout_behavior="@string/appbar_scrolling_view_behavior"
                app:behavior_overlapTop="192dp"
                android:layout_height="match_parent">

            <LinearLayout android:layout_width="match_parent"
                          android:orientation="vertical"
                          android:padding="@dimen/medium_padding"
                          android:layout_height="match_parent">

                          <!-- my content -->


            </LinearLayout>

        </android.support.v4.widget.NestedScrollView>



        <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                app:layout_scrollFlags="scroll|enterAlways"></android.support.v7.widget.Toolbar>
        <ImageView
                android:src="@drawable/fondo_drawer"
                app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:scaleType="fitXY"
                app:layout_collapseMode="parallax"
                android:minHeight="100dp"/>

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

我用ScrollView和NestedScrollView测试失败了.

有任何想法吗？提前致谢!

Answer 1

我认为

android:fitsSystemWindows="true" is the cause.

检查我的简单工作示例代码.

<android.support.design.widget.CoordinatorLayout
    android:id="@+id/product_detail_main_content"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:apptools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="@dimen/product_detail_appBar_height"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/detail_product_collapsing_toolbar"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:foregroundGravity="bottom|right"
            android:foregroundTintMode="add"
            android:clipToPadding="true"
            app:contentScrim="?attr/colorPrimary"
            app:expandedTitleMarginStart="@dimen/space_xxlarge"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">

            <ImageView
                android:id="@+id/header"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="@drawable/image"
                android:fitsSystemWindows="true"
                android:scaleType="centerCrop"
                app:layout_collapseMode="parallax"
                app:layout_collapseParallaxMultiplier="0.7"/>

            <android.support.v7.widget.Toolbar
                android:id="@+id/product_toolBar_title"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:fitsSystemWindows="true"
                app:layout_collapseMode="pin"
              app:navigationIcon="@drawable/ic_arrow_back_white_24dp"
              app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
           app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>

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

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

<android.support.v4.widget.NestedScrollView
 ........
<android.support.design.widget.CoordinatorLayout

你可以查看这个链接http://inthecheesefactory.com/blog/android-design-support-library-codelab/en