android– 在DrawerLayout中添加RecyclerView

概述我希望能够在DrawyerLayoutMainActivity的主页面中有一个RecyclerView.但是,如下所示添加我的代码不允许这样做,而RecyclerView是最重要的：但我仍然可以访问抽屉：我怎样才能做到这一点？主要活动：publicclassMainActivityextendsAppCompatActivityimplementsNavig

我希望能够在DrawyerLayout MainActivity的主页面中有一个RecyclerVIEw.但是,如下所示添加我的代码不允许这样做,而RecyclerVIEw是最重要的：

但我仍然可以访问抽屉：

我怎样才能做到这一点？

主要活动：

public class MainActivity extends AppCompatActivity        implements NavigationVIEw.OnNavigationItemSelectedListener {    private List<Person> persons;    private RecyclerVIEw rv;    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.activity_main);  // Original activity        Toolbar toolbar = (Toolbar) findVIEwByID(R.ID.toolbar);        setSupportActionbar(toolbar);        // *** BEGIN THE RECYCLER VIEW *** //        rv=(RecyclerVIEw)findVIEwByID(R.ID.rv);        linearlayoutmanager llm = new linearlayoutmanager(this);        rv.setLayoutManager(llm);        rv.setHasFixedSize(true);        initializeData();        initializeAdapter();        // Original Drawer layout code        DrawerLayout drawer = (DrawerLayout) findVIEwByID(R.ID.drawer_layout);        ActionbarDrawerToggle toggle = new ActionbarDrawerToggle(                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);        drawer.addDrawerListener(toggle);   //   drawer.setDrawerListener(toggle);  Deprecated        toggle.syncState();        NavigationVIEw navigationVIEw = (NavigationVIEw) findVIEwByID(R.ID.nav_vIEw);        navigationVIEw.setNavigationItemSelectedListener(this);    }    @OverrIDe    public voID onBackpressed() {        DrawerLayout drawer = (DrawerLayout) findVIEwByID(R.ID.drawer_layout);        if (drawer.isDrawerOpen(GravityCompat.START)) {            drawer.closeDrawer(GravityCompat.START);        } else {            super.onBackpressed();        }    }    // *** REMOVE THE MAIN DROP DOWN MENU ***    @OverrIDe    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.main, menu);        return true;    }    @OverrIDe    public boolean onoptionsItemSelected(MenuItem item) {        // Handle action bar item clicks here. The action bar will        // automatically handle clicks on the Home/Up button, so long        // as you specify a parent activity in AndroIDManifest.xml.//        int ID = item.getItemID();////        //noinspection SimplifiableIfStatement//        if (ID == R.ID.action_settings) {//            return true;//        }        return super.onoptionsItemSelected(item);    }    @SuppressWarnings("StatementWithEmptyBody")    @OverrIDe    public boolean onNavigationItemSelected(MenuItem item) {        // Handle navigation vIEw item clicks here.        int ID = item.getItemID();        if (ID == R.ID.nav_breakfast) {            // Handle the camera action        } else if (ID == R.ID.nav_lunch) {        } else if (ID == R.ID.nav_dinner) {        }        DrawerLayout drawer = (DrawerLayout) findVIEwByID(R.ID.drawer_layout);        drawer.closeDrawer(GravityCompat.START);        return true;    }    private voID initializeData(){        persons = new ArrayList<>();        persons.add(new Person("emma Wilson", "23 years old", R.drawable.emma));        persons.add(new Person("Lavery Maiss", "25 years old", R.drawable.lavery));        for ( int i = 0; i <=1000; i++) {            persons.add(new Person("lillIE Watts", "35 years old", R.drawable.lillIE));        }    }    private voID initializeAdapter(){        RVAdapter adapter = new RVAdapter(persons);        rv.setAdapter(adapter);    }}

activity_main.xml中：

<?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" />        <linearLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"            androID:layout_wIDth="match_parent"            androID:layout_height="match_parent"            androID:padding="16dp"        >            <androID.support.v7.Widget.RecyclerVIEw                androID:layout_height="match_parent"                androID:layout_wIDth="match_parent"                androID:ID="@+ID/rv">            </androID.support.v7.Widget.RecyclerVIEw>        </linearLayout>    </androID.support.v4.Widget.DrawerLayout>

更新
现在的观点：

activity_main：

<?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">        <!-- Added to allow RecyclerVIEw -->        <linearLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"            androID:layout_wIDth="match_parent"            androID:layout_height="match_parent"            androID:orIEntation="vertical">            <include                layout="@layout/app_bar_main"                androID:layout_wIDth="match_parent"                androID:layout_height="wrap_content" />            <androID.support.v7.Widget.RecyclerVIEw                androID:layout_height="wrap_content"                androID:layout_wIDth="match_parent"                androID:ID="@+ID/rv">            </androID.support.v7.Widget.RecyclerVIEw>        </linearLayout>    <androID.support.design.Widget.NavigationVIEw        androID:ID="@+ID/nav_vIEw"        androID:layout_wIDth="match_parent"        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>

解决方法:

首先,您可以从linearLayout中删除androID：padding =“16dp”,这就是您在列表周围看到“空白区域”的原因.

然后你想在< include-d app栏布局上使用wrap_content高度,这样就不会占用整个空间.只需将linearLayout移动到NavigationVIEw之外

<?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"    ...    <!-- here is the content -->    <linearLayout        androID:orIEntation="vertical"        ...        >        <!-- here is the toolbar -->        <include            layout="@layout/app_bar_main"            androID:layout_wIDth="match_parent"            androID:layout_height="wrap_content" />        ...        <RecyclerVIEw            ...            />    </linearLayout>    <!-- here is the drawer -->    <NavigationVIEw        androID:layout_gravity="start"        ... >    </NavigationVIEw></DrawerLayout>

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