Question

应用程序的工具栏没有折叠。这是我的activity_main xml文件，如何

折叠应用程序工具栏。我尝试使用波纹管代码实现，但我的代码甚至没有崩溃并显示其他内容。如果我删除了 android.support.design.widget.CollapsingToolbarLayout标记然后我可以看到我的原始布局，如

This是没有实现CollapsingToolBar的视图。

有关设计的更多信息，我有9个标签，其中包含9个片段，每个标签包含RecyclerView。在recyclerview文件中实施CollapsingToolBa r后，向上滚动activity_main.xml工具栏时不会崩溃。

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

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

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/colorPrimary"/>


        <android.support.design.widget.TabLayout
            android:id="@+id/tabs"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:tabGravity="fill"
            app:tabIndicatorHeight="2dp"
            app:tabMode="scrollable"
            app:tabMaxWidth="0dp"
            android:theme="@style/MyMaterialTheme"/>
 </android.support.design.widget.CollapsingToolbarLayout>

    </android.support.design.widget.AppBarLayout>
    <View
        android:id="@+id/view_line"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#f90404"
        android:layout_below="@+id/appbar"/>


    <android.support.v4.widget.DrawerLayout
        android:id="@+id/drawerLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/view_line">

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">


        <FrameLayout
            android:id="@+id/main_container"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_alignParentBottom="true"
            android:clickable="true"
            android:padding="5dp">

        </FrameLayout>
        <android.support.v4.view.ViewPager
            android:id="@+id/viewpager"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_behavior="@string/appbar_scrolling_view_behavior" />

            <FrameLayout
                android:id="@+id/mensaje_vp_container"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_alignParentBottom="true"
                android:clickable="true" />


        </RelativeLayout>
        <android.support.design.widget.NavigationView
            android:id="@+id/navigation"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            android:choiceMode="singleChoice"
            android:fitsSystemWindows="true"
            app:itemBackground="@android:color/transparent"
            app:itemTextColor="#780d0d"
            app:menu="@menu/navigation_drawer_items"
            />


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

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

Answer 1

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

<android.support.design.widget.AppBarLayout
    android:layout_width="match_parent"
    android:layout_height="250dp"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:contentScrim="?attr/colorPrimary"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@drawable/cartoon"
            android:scaleType="centerCrop"
            app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed"
            app:layout_collapseMode="parallax" />

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            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.v4.widget.NestedScrollView
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:background="#ffe5e5"
       app:layout_behavior="@string/appbar_scrolling_view_behavior">

       <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:orientation="vertical"
         android:paddingTop="10dp">
         <include layout="@layout/card_layout" />
         <include layout="@layout/card_layout" />
         <include layout="@layout/card_layout" />
      </LinearLayout>

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

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

<强>输出

更多Reference

Answer 2

试试这个。您需要将app:layout_behavior="@string/appbar_scrolling_view_behavior"设置为AppBarLayout下方的布局。

<android.support.v4.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/drawerLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/view_line">

    <android.support.design.widget.CoordinatorLayout
        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="wrap_content"
            app:theme="@style/ThemeOverlay.AppCompat.Dark">

            <android.support.design.widget.CollapsingToolbarLayout
                android:id="@+id/collapsing_toolbar"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                app:layout_scrollFlags="scroll|exitUntilCollapsed">

                <android.support.v7.widget.Toolbar
                    android:id="@+id/toolbar"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:background="@color/colorPrimary"
                    app:layout_collapseMode="pin"/>

                <android.support.design.widget.TabLayout
                    android:id="@+id/tabs"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    app:tabGravity="fill"
                    app:tabIndicatorHeight="2dp"
                    app:tabMaxWidth="0dp"
                    app:tabMode="scrollable"/>
            </android.support.design.widget.CollapsingToolbarLayout>

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

        <View
            android:id="@+id/view_line"
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:layout_below="@+id/appbar"
            android:background="#f90404"/>


        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_behavior="@string/appbar_scrolling_view_behavior">

            <FrameLayout
                android:id="@+id/main_container"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_alignParentBottom="true"
                android:clickable="true"
                android:padding="5dp">

            </FrameLayout>

            <android.support.v4.view.ViewPager
                android:id="@+id/viewpager"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

            <FrameLayout
                android:id="@+id/mensaje_vp_container"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_alignParentBottom="true"
                android:clickable="true"/>


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

    <android.support.design.widget.NavigationView
        android:id="@+id/navigation"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:choiceMode="singleChoice"
        android:fitsSystemWindows="true"
        app:itemBackground="@android:color/transparent"
        app:itemTextColor="#780d0d"
        app:menu="@menu/sample_actions"/>

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

在片段

2 个答案: