单击抽屉外部时，Android导航抽屉不会关闭（主活动中的片段）

Question

出于某种原因，当在抽屉外部敲击时导航抽屉不会关闭。在MainActivity中使用ListView的另一个片段：

当点击右侧的片段时，它不会关闭抽屉，而是就像片段占据整个屏幕并且点击监听器在片段中仍处于活动状态一样。

activity_main.xml中：

<RelativeLayout 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/main_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">

<android.support.v7.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@android:color/holo_orange_dark"
    android:minHeight="?attr/actionBarSize"
    android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
    app:title="Apartment Guide"
    app:titleTextColor="@android:color/white" />

<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"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/toolbar"
    tools:context=".MainActivity">

    <android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="220dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:background="@color/white"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/header"
        app:itemTextColor="@android:color/darker_gray"
        app:menu="@menu/drawer_menu" />

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

<FrameLayout
    android:id="@+id/fragment_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/toolbar">

</FrameLayout>

main activity.Java:

    @Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    mDrawerLayout = findViewById(R.id.drawer);
    fragmentContent = findViewById(R.id.fragment_content);
    mToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.drawer_opened, R.string.drawer_closed) {
        @Override
        public void onDrawerOpened(View drawerView) {
            super.onDrawerOpened(drawerView);
            getSupportActionBar().setTitle(R.string.drawer_opened);
        }

        @Override
        public void onDrawerClosed(View drawerView) {
            super.onDrawerClosed(drawerView);
            getSupportActionBar().setTitle(R.string.drawer_closed);
        }

        @Override
        public void onDrawerSlide(View drawerView, float slideOffset) {
            super.onDrawerSlide(drawerView, slideOffset);
            fragmentContent.setTranslationX(slideOffset * drawerView.getWidth());
            mDrawerLayout.bringChildToFront(drawerView);
            mDrawerLayout.requestLayout();
        }
    };
    mToggle.getDrawerArrowDrawable().setColor(getResources().getColor(R.color.white));

    mDrawerLayout.addDrawerListener(mToggle);
    mToggle.syncState();
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    if (savedInstanceState == null)
        selectDrawerItem(null);

    NavigationView navigationView = findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
        @Override
        public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
            selectDrawerItem(menuItem);
            return true;
        }
    });
}

在抽屉区域外部敲击时，不确定我做错了什么作为关闭抽屉应该是drawerLayouts中的默认行为。

Answer 1

发生这种情况是因为NavigationDrawer没有捕获视图，因为活动元素未包含在其中，并且要使其正常工作，您必须使NavigationDrawer成为Activity布局的主根，并且RelativeLayout是它的子代，如下：

<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"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/toolbar"
    tools:context=".MainActivity">

    <RelativeLayout 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/main_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".MainActivity">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@android:color/holo_orange_dark"
            android:minHeight="?attr/actionBarSize"
            android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
            app:title="Apartment Guide"
            app:titleTextColor="@android:color/white" />

        <FrameLayout
            android:id="@+id/fragment_content"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_below="@+id/toolbar">

        </FrameLayout>

    </RelativeLayout>

    <android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="220dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:background="@color/white"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/header"
        app:itemTextColor="@android:color/darker_gray"
        app:menu="@menu/drawer_menu" />

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