java - 导航 View 不在工具栏中

Question

这个问题已经有答案了:

navigation drawer is always inflated when the app starts (2 个回答)

Why is my Android navigation drawer opening too wide? (1 个回答)

Clicking hamburger icon on Toolbar does not open Navigation Drawer (1 个回答)

已关闭 3 年前。

我遇到了一个奇怪的问题。我在抽屉布局内创建了一个导航 View ，但是导航 View 在 Activity 启动后才可见。工具栏汉堡菜单不可点击。

main_menu.xml:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:showIn="navigation_view"
    >
    <group android:checkableBehavior="single">
    <item android:id="@+id/menu_explore" android:title="@string/explore"
        android:icon="@drawable/exploreicon" />

    <item android:id="@+id/menu_profile" android:title="@string/profile"
        android:icon="@drawable/profileicon"/>

    <item android:id="@+id/menu_search" android:title="@string/search"
        android:icon="@drawable/searchicon"/>

    <item android:id="@+id/menu_settings" android:title="@string/settings"
        android:icon="@drawable/settingsicon"/>

    <item android:id="@+id/menu_bookmarked" android:title="@string/bookmarked"
        android:icon="@drawable/bookmarkicon"/>

    <item android:id="@+id/menu_logout" android:title="@string/log_out"
        android:icon="@drawable/logouticon"/>

    </group>
</menu>

activity_main.xml

<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:id="@+id/drawerLayout"
    android:layout_width="250dp"
    android:layout_height="match_parent"
    android:layout_marginTop="?attr/actionBarSize"
    android:layout_gravity="start"
    android:clickable="false"
    android:clipToPadding="false"
    android:fitsSystemWindows="true"
    android:padding="16dp"
    android:scrollIndicators="start"
    android:visibility="visible"
    tools:openDrawer="start">

    <com.google.android.material.appbar.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <androidx.appcompat.widget.Toolbar
            android:id="@+id/mainToolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:elevation="4dp"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
    </com.google.android.material.appbar.AppBarLayout>


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


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

    </LinearLayout>


    <com.google.android.material.navigation.NavigationView
        android:id="@+id/navigation"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:background="#FFF"
        app:headerLayout="@layout/menu_header"
        app:itemIconTint="#6b6b6b"
        app:itemTextColor="#6b6b6b"
        app:menu="@menu/main_menu">

    </com.google.android.material.navigation.NavigationView>

</androidx.drawerlayout.widget.DrawerLayout>

主要 Activity 的样式:

<style name="AppTheme.NoActionBar" parent="Theme.AppCompat.Light.DarkActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
        <item name="android:windowFullscreen">true</item>
    </style>

主要 Activity :

public class MainActivity extends AppCompatActivity {

    private DrawerLayout drawerLayout;
    private ActionBarDrawerToggle actionBarDrawerToggle;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Toolbar toolbar = findViewById(R.id.mainToolbar);
        toolbar.setTitle(R.string.app_name);
        setSupportActionBar(toolbar);
        drawerLayout = findViewById(R.id.drawerLayout);
        actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawerLayout,
                R.string.open,R.string.close);
        drawerLayout.addDrawerListener(actionBarDrawerToggle);
        actionBarDrawerToggle.syncState();
    }
}

我希望导航 View 仅在单击工具栏中的汉堡包图标时可见。我遵循的每个教程都对我做了同样的事情，但是我的教程没有显示在工具栏中。

Answer 1

在 ActionBarDrawerToggle 启动期间传递 toolbar 实例

actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawerLayout, toolbar, R.string.open,R.string.close);