我有底部导航和导航抽屉，我将主屏幕片段设置为默认

Question

我有底部导航和导航抽屉，我将主屏幕片段设置为默认

现在的问题是当我在模拟器汉堡包图标上运行我的应用程序并且底部导航显示并且默认为主片段

当我点击汉堡包图标时它不起作用

当我删除默认的主页片段然后导航抽屉正在工作

如何解决这个问题所以navigationDrawer和底部导航都可以工作

home screen activity.Java

public class HomeScreenActivity extends AppCompatActivity {

    DrawerLayout mDrawerLayout;
    ActionBarDrawerToggle mToggle;
    BottomNavigationView bottomNavigationView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home_screen);



        bottomNavigationView = findViewById(R.id.homeScreenBottomNavigation);
        bottomNavigationView.setOnNavigationItemSelectedListener(bottomNavListener);
     //   getSupportFragmentManager().beginTransaction().replace(R.id.homeScreenframeLayout, new HomeFragment()).commit();


        mDrawerLayout = findViewById(R.id.HomeScreenDrawerLayout);
        mToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.open, R.string.close);
        mDrawerLayout.addDrawerListener(mToggle);
        mToggle.syncState();
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        if (mToggle.onOptionsItemSelected(item)) {
            return true;

        }

        return super.onOptionsItemSelected(item);
    }

    private BottomNavigationView.OnNavigationItemSelectedListener bottomNavListener = new BottomNavigationView.OnNavigationItemSelectedListener() {
        @Override
        public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {

            Fragment selectedFragment = null;

            switch (menuItem.getItemId()) {
                case R.id.bottomNavHome:
                    selectedFragment = new HomeFragment();
                    break;

                case R.id.bottomNavAdd:
                    selectedFragment = new AddFragment();
                    break;

                case R.id.bottomNavSearch:
                    selectedFragment = new SearchFragment();
                    break;
            }

            getSupportFragmentManager().beginTransaction().replace(R.id.homeScreenframeLayout, selectedFragment).commit();
            return true;


        }
    };
}

ActivityHomeScreen.xml

<?xml version="1.0" encoding="utf-8"?>
<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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".HomeScreenActivity"

    >
    <android.support.v4.widget.DrawerLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/HomeScreenDrawerLayout"
        >
        <android.support.design.widget.NavigationView
            app:headerLayout="@layout/left_navigation_header"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:id="@+id/navigationView"
            app:menu="@menu/drawer_layout"
            android:layout_gravity="start"
            android:background="#ffff"
            >
        </android.support.design.widget.NavigationView>

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

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

    <android.support.design.widget.BottomNavigationView
        android:id="@+id/homeScreenBottomNavigation"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentBottom="true"
        app:menu="@menu/bottom_navigation"
        android:background="?android:attr/windowBackground"
        >

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

</RelativeLayout>

Answer 1

问题出在ActivityHomeScreen.xml上。您必须将DrawerLayout作为父视图。在里面你必须放置BottomNavigationDrawer和剩余的代码。

并且您还没有为导航抽屉创建自定义应用栏（它现在带有导航抽屉模板）您的Activity HomeScreen.xml应如下所示：

ActivityHomeScree.xml

<?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">

    <include
        layout="@layout/app_bar_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <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/nav_header_main"
        app:menu="@menu/activity_main_drawer" />

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

现在创建一个布局文件app_bar_main.xml。在里面创建一个工具栏并将frameLayout放在这里。

app_bar_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 
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.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        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"
            app:popupTheme="@style/AppTheme.PopupOverlay" />

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

    <!--
    Place your frameLayout here
    -->
    
    <android.support.design.widget.BottomNavigationView
        android:id="@+id/navigation"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_gravity="bottom"
        app:menu="@menu/navigation" />

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

现在导航抽屉和底部导航抽屉都应该工作。