java - 在PreferenceScreen中显示ActionBar看起来很困惑

我正在尝试在我的PreferenceScreen中显示一个ActionBar。在我的MainActivity中，它完全可以正常工作，但是在我的PreferenceScreen中，它看起来很混乱，因为actinBar的标题位于屏幕的中间，并且布局位于actionBar上（请参见屏幕截图）。

SettingsActivity.java：

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.settings_activity);
        getSupportFragmentManager()
                .beginTransaction()
                .replace(R.id.settings_drawer, new SettingsFragment())
                .commit();


        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setHomeButtonEnabled(true);

        mTitle = getTitle();
        mDrawerLayout = findViewById(R.id.settings_drawer);
        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) {
            public void onDrawerClosed(View view) {
                getSupportActionBar().setTitle(mTitle);
                supportInvalidateOptionsMenu();
            }

            public void onDrawerOpened(View drawerView) {
                getSupportActionBar().setTitle(R.string.app_name);
                supportInvalidateOptionsMenu();
            }
        };
        mDrawerLayout.addDrawerListener(mDrawerToggle);

        setNavigationViewListener();
    }

@Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        mDrawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

public static class SettingsFragment extends PreferenceFragmentCompat {
        @Override
        public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
            setPreferencesFromResource(R.xml.root_preferences, rootKey);
        }
    }

settings_activity.xml：

<androidx.drawerlayout.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/settings_drawer"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context=".SettingsActivity">

    <androidx.appcompat.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="?attr/colorPrimary"
        android:minHeight="?attr/actionBarSize"
        android:visibility="visible" />

    <com.google.android.material.navigation.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        app:headerLayout="@layout/nav_header_main"
        app:menu="@menu/activity_main_drawer"
        android:layout_gravity="start"
        android:fitsSystemWindows="true" />

</androidx.drawerlayout.widget.DrawerLayout>

最佳答案

不要直接用DrawerLayout替换片段，而要在FrameLayout中使用可以替换片段的DrawerLayout。
遵循以下内容应该可以。

<androidx.drawerlayout.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/settings_drawer_base"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context=".SettingsActivity">

    <!-- This LinearLayout represents the contents of the screen  -->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <androidx.appcompat.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="?attr/colorPrimary"
            android:minHeight="?attr/actionBarSize"
            android:visibility="visible" />

        <!-- The main content view where fragments are loaded -->
        <FrameLayout
            android:id="@+id/settings_drawer"
            app:layout_behavior="@string/appbar_scrolling_view_behavior"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

    </LinearLayout>

    <com.google.android.material.navigation.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        app:headerLayout="@layout/nav_header_main"
        app:menu="@menu/activity_main_drawer"
        android:layout_gravity="start"
        android:fitsSystemWindows="true" />

</androidx.drawerlayout.widget.DrawerLayout>

PS-
您需要用我提供的新ID引用DrawerLayout。

mDrawerLayout = findViewById(R.id.settings_drawer_base);