这是我的Xml代码:-
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context=".MainActivity"
xmlns:android="http://schemas.android.com/apk/res/android">
<androidx.drawerlayout.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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:id="@+id/drawerLayout"
android:fitsSystemWindows="true">
<LinearLayout
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<include
android:id="@+id/toolbar1"
layout="@layout/toolbar_standalone" />
</LinearLayout>
<!-- Navigation View Describe here input are header and toolbar-->
<com.google.android.material.navigation.NavigationView
android:id="@+id/navigationView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="@layout/navigation_header"
app:itemIconTint="#8C000000"
app:itemTextColor="#E6000000"
app:menu="@menu/navigation_menu_items_grouped">
</com.google.android.material.navigation.NavigationView>
</androidx.drawerlayout.widget.DrawerLayout>
<!--recycler view add here-->
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="0dp"
android:layout_height="0dp"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="8dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp">
</androidx.recyclerview.widget.RecyclerView>
</androidx.constraintlayout.widget.ConstraintLayout>
这里Recycler View在工具栏上方。工具栏未显示在“模拟器”屏幕中。回收站视图运行正常,但未显示工具栏及其菜单。请让我纠正布局以解决此问题。请让我知道对XML文件进行哪些更改。
您的RecyclerView有
这是正确的答案,只是倒过来了。试试这个:
这对我有用:-