Android - 具有alignParentBottom =「true」的視圖在ViewPager中不可見

Question

我正在實施一個應用程序Toolbar，TabLayout，ViewPager和CoordinatorLayout。如圖所示，ViewPager中的屬性layout_behavior = "@string/appbar_scrolling_view_behavior"導致底部中的額外空間。

我該如何將alignParentBottom = "true"的視圖放在ViewPager中，並且它們是可見的，而不是隱藏在不可見的部分？謝謝

main.xml中

<?xml version="1.0" encoding="utf-8"?> 
<android.support.v4.widget.DrawerLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
xmlns:tools="http://schemas.android.com/tools" 
android:id="@+id/drawer_layout" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:fitsSystemWindows="true" 
tools:openDrawer="start"> 

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

    <android.support.design.widget.AppBarLayout 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:fitsSystemWindows="true" 
     android:theme="@style/AppTheme.AppBarOverlay"> 

     <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:minHeight="?attr/actionBarSize" 
      android:background="?attr/colorPrimary" 
      app:theme="@style/ToolbarColoredBackArrow" 
      app:popupTheme="@style/AppTheme"/> 

     <android.support.design.widget.TabLayout 
      android:id="@+id/tabs" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:translationZ="2dp" 
      app:tabTextColor="@color/tabs_text_selector" 
      app:tabIndicatorHeight="3dp" 
      app:tabIndicatorColor="@android:color/white"/> 

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

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

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

<android.support.design.widget.NavigationView 
    android:id="@+id/nav_view" 
    android:layout_width="wrap_content" 
    android:layout_height="match_parent" 
    android:layout_gravity="start" 
    android:fitsSystemWindows="true" 
    app:headerLayout="@layout/drawer_header" 
    app:menu="@menu/activity_main_drawer" /> 

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

Answer 1

試試這個：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical"> 

    <android.support.v4.widget.DrawerLayout 
     android:id="@+id/drawer_layout" 
     xmlns:android="http://schemas.android.com/apk/res/android" 
     xmlns:app="http://schemas.android.com/apk/res-auto" 
     xmlns:tools="http://schemas.android.com/tools" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:fitsSystemWindows="true" 
     tools:openDrawer="start"> 

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

      <android.support.design.widget.AppBarLayout 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:fitsSystemWindows="true" 
       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" 
        android:minHeight="?attr/actionBarSize" 
        app:layout_scrollFlags="scroll|enterAlways" 
        app:popupTheme="@style/AppTheme" 
        app:theme="@style/ToolbarColoredBackArrow"/> 

       <android.support.design.widget.TabLayout 
        android:id="@+id/tabs" 
        android:layout_width="match_parent" 
        android:layout_height="wrap_content" 
        android:translationZ="2dp" 
        app:tabIndicatorColor="@android:color/white" 
        app:tabIndicatorHeight="3dp" 
        app:tabTextColor="@color/tabs_text_selector"/> 

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

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

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

     <android.support.design.widget.NavigationView 
      android:id="@+id/nav_view" 
      android:layout_width="wrap_content" 
      android:layout_height="match_parent" 
      android:layout_gravity="start" 
      android:fitsSystemWindows="true" 
      app:headerLayout="@layout/drawer_header" 
      app:menu="@menu/activity_main_drawer"/> 

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

    <TextView 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:text="This is a test"/> 
</LinearLayout> 

這裏，TextView位置是在DrawerLayout的底部。

Answer 2

嘗試刪除

 app:layout_scrollFlags="scroll|enterAlways" 

內android.support.v7.widget.Toolbar