隐藏工具栏和抽屉滚动

Question

我正在制作一个Android应用程序，我在其中隐藏了滚动条上的工具栏，但出错了，我不知道是什么。我曾尝试一切从AppBarLayout到CollapsingToolbarLayout但没有任何工程，我不知道是什么在这里失去了我的代码：

<?xml version="1.0" encoding="utf-8"?> 
<android.support.design.widget.CoordinatorLayout 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:fitsSystemWindows="true" 
    tools:context="com.manali.vivek.projectx.MainActivity"> 

    <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:elevation="7dp"> 
     <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
      xmlns:tools="http://schemas.android.com/tools" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:background="#fff" 
      android:orientation="vertical" 
      tools:context="com.manali.vivek.userregistration.startActivity"> 

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

       android:theme="@style/ThemeOverlay.AppCompat.Dark"> 

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


      <!-- our tablayout to display tabs --> 
      <android.support.design.widget.TabLayout 
       android:id="@+id/tabLayout" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:background="#fff" 
       app:tabTextColor="#a6a2a2" 
       app:tabSelectedTextColor="#0099ff" 
       app:tabIndicatorColor="#0099ff" 

       android:minHeight="?attr/actionBarSize" 
       android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/> 
      </android.support.design.widget.AppBarLayout> 

      <!-- View pager to swipe views --> 
      <android.support.v4.view.ViewPager 
       android:id="@+id/pager" 
       app:layout_behavior="@string/appbar_scrolling_view_behavior" 
       android:layout_width="match_parent" 
       android:layout_height="fill_parent"/> 
     </LinearLayout> 

     <android.support.v7.widget.RecyclerView 
      android:id="@+id/RecyclerView" 
      android:layout_width="320dp" 
      android:layout_height="match_parent" 
      android:layout_gravity="left" 

      android:background="#ffffff" 
      android:scrollbars="vertical"> 

     </android.support.v7.widget.RecyclerView> 
    </android.support.v4.widget.DrawerLayout> 


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

任何帮助将受到欢迎。

Answer 1

为什么添加LinearLayout？删除的LinearLayout并添加此XML，并尝试

抽屉布局XML

<android.support.v4.widget.DrawerLayout 
     android:id="@+id/drawer_layout" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:fitsSystemWindows="true" 
     tools:openDrawer="start"> 

     <include 
      android:id="@+id/includeAppBar" 
      layout="@layout/app_bar_navigation_drawer" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" /> 

     <android.support.design.widget.NavigationView 
      android:id="@+id/nav_view" 
      android:layout_width="300dp" 
      android:layout_height="match_parent" 
      android:layout_gravity="start" 
      android:fitsSystemWindows="true"> 

      <LinearLayout 
       android:layout_width="match_parent" 
       android:layout_height="match_parent" 
       android:orientation="vertical"> 

       <FrameLayout 
        android:id="@+id/containerMenu" 
        android:layout_width="match_parent" 
        android:layout_height="match_parent" /> 

      </LinearLayout> 
     </android.support.design.widget.NavigationView> 

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

app_bar_navigation_drawer.xml

<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:theme="@style/AppTheme.AppBarOverlay"> 

     <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" 
      app:popupTheme="@style/AppTheme.PopupOverlay"> 

      <LinearLayout 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:layout_gravity="center" 
       android:gravity="center" 
       android:orientation="vertical"> 

       <TextView 
        android:id="@+id/toolbar_title" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:singleLine="true" 
        android:text="@string/app_name" 
        android:textAllCaps="true" 
        app:font="@{`bold`}" 
        android:textAppearance="?android:textAppearanceLarge" 
        android:textColor="@android:color/white" /> 

      </LinearLayout> 
     </android.support.v7.widget.Toolbar> 

     <android.support.design.widget.TabLayout 
      android:id="@+id/tabs" 
      android:layout_width="match_parent" 
      android:background="@color/colorPrimaryDar" 
      app:tabMode="fixed" 
      app:tabPaddingStart="0dp" 
      app:tabPaddingEnd="0dp" 
      app:tabGravity="fill" 
      app:tabIndicatorHeight="0dp" 
      android:layout_height="wrap_content" /> 

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

    <include layout="@layout/frame_layout" /> 

    <android.support.design.widget.FloatingActionButton 
     android:id="@+id/add" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_gravity="bottom|end" 
     android:visibility="gone" 
     android:clickable="true" 
     android:focusable="true" 
     android:background="?attr/selectableItemBackground" 
     android:layout_margin="@dimen/fab_margin" 
     android:src="@drawable/ic_plus" /> 

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