Android 如何在工具栏下方启动抽屉式布局?

How to start Drawer Layout below the toolbar in Android?

这是我的主要 xml 文件:

  <?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"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true"
        android:id="@+id/nav_drawer">

    <android.support.design.widget.CoordinatorLayout
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true"
        tools:context="com.example.amit.rssreader.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>

        <include layout="@layout/content_main" />


    </android.support.design.widget.CoordinatorLayout>
        <android.support.design.widget.NavigationView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            app:menu="@menu/navigation_menu"
            android:layout_gravity="start">

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

这就是正在发生的事情

我想让抽屉位于操作栏下方。这不是导航抽屉 Activity,导航抽屉是稍后由 xml 添加的。

我认为这可能对您有所帮助:

  1. 修改xml布局:

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout 
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <android.support.design.widget.AppBarLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="wrap_content">
    
            </android.support.v7.widget.Toolbar>
        </android.support.design.widget.AppBarLayout>
    
        <android.support.v4.widget.DrawerLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">
            <android.support.design.widget.CoordinatorLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent">
                <include layout="@layout/content_main" />
            </android.support.design.widget.CoordinatorLayout>
        </android.support.v4.widget.DrawerLayout>
    </LinearLayout>
    
  2. 在 values/styles.xml 中为没有工具栏的 activity 创建主题并将其应用到 AndroidManifest 文件中的 activity:

    <style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
    </style>
    
  3. 要使其正常工作,请将 activity 的 onCreate 方法设置为如下所示:

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        final DrawerLayout drawerLayout = (DrawerLayout) 
            findViewById(R.id.drawerLayout);
    
        ActionBar supportActionBar = getSupportActionBar();
        if(supportActionBar != null) {
            supportActionBar.setDisplayHomeAsUpEnabled(true);
            supportActionBar.setHomeButtonEnabled(true);
        }
    
        setSupportActionBar(toolbar);
    
        final ListView drawerList = (ListView) 
            findViewById(R.id.drawerList);
            drawerList.setAdapter(new ArrayAdapter<>(this, android.R.layout.simple_list_item_1,
            new String[] { "Item 1", "Item 2", "Item 3" } ));
    
    
    
            drawerLayout.setScrimColor(Color.TRANSPARENT);
    
            ActionBarDrawerToggle actionBarDrawerToggle =
            new ActionBarDrawerToggle(this, drawerLayout,
                    toolbar, R.string.app_name, R.string.app_name);
    
            actionBarDrawerToggle.setToolbarNavigationClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(drawerLayout.isDrawerOpen(drawerList)) {
                    drawerLayout.closeDrawers();
                } else {
                    drawerLayout.openDrawer(drawerList);
                }
            }
        });
    
        drawerLayout.addDrawerListener(actionBarDrawerToggle);
    
        actionBarDrawerToggle.syncState();
    }
    

    这就是它的工作原理。