Android Fragment-onCreateView-容器为空

概述我的onCreateView方法有一个小问题-给定的容器/父级为null,因此我无法膨胀我的布局.这是我的代码：这是我的“主要”课程publicclassDrawerActivityextendsActionBarActivityimplementsNavigationFragment.NavigationListener{privatestaticfinalintDRAWE

我的onCreateVIEw方法有一个小问题-给定的容器/父级为null,因此我无法膨胀我的布局.这是我的代码：

这是我的“主要”课程

public class DrawerActivity extends ActionBaractivity        implements NavigationFragment.NavigationListener {    private static final int DRAWER_DELAY = 250;    private Toolbar toolbar;    private NavigationFragment navigationFragment;    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        // check if smartphone or tablet...        if (isstaticmenuDrawer()) {            setContentVIEw(R.layout.activity_drawer_static);        } else {            setContentVIEw(R.layout.activity_drawer);        }    }    protected voID createMenuDrawer(int contentVIEwID) {        VIEwGroup content = (VIEwGroup) findVIEwByID(R.ID.content);        content.addVIEw(getLayoutInflater().inflate(contentVIEwID, null));        navigationFragment = (NavigationFragment)                getSupportFragmentManager().findFragmentByID(R.ID.drawer_fragment);        navigationFragment.initDrawer(R.ID.drawer_fragment, R.ID.drawer_layout, toolbar);    }}

这是我的activity_drawer.xml

<?xml version="1.0" enCoding="utf-8"?><androID.support.v4.Widget.DrawerLayout    xmlns:androID="http://schemas.androID.com/apk/res/androID"    androID:ID="@+ID/drawer_layout"    androID:layout_height="match_parent"    androID:layout_wIDth="match_parent" >    <FrameLayout        androID:ID="@+ID/content"        androID:layout_wIDth="match_parent"        androID:layout_height="match_parent"/>    <include layout="@layout/include_drawer"/>    <include layout="@layout/include_toolbar"/></androID.support.v4.Widget.DrawerLayout>

这是我的OvervIEwActivity(我的启动器/默认活动)

public class OvervIEwActivity extends DrawerActivity {    OvervIEwFragment overvIEw;    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        createMenuDrawer(R.layout.activity_overvIEw);    }}

我的activity_overvIEw.xml

<?xml version="1.0" enCoding="utf-8"?><fragment    xmlns:androID="http://schemas.androID.com/apk/res/androID"    androID:layout_wIDth="match_parent"    androID:layout_height="match_parent"        androID:ID="@+ID/fragment_overvIEw" />

还有…我的片段

public class OvervIEwFragment extends Fragment {    @OverrIDe    public VIEw onCreateVIEw(LayoutInflater inflater, @Nullable VIEwGroup container, @Nullable Bundle savedInstanceState) {        return inflater.inflate(R.layout.fragment_overvIEw, container, false);    }}

谁能解释我,为什么容器为空？谢谢… ：)

解决方法:

您的< fragment>使用静态方法时,需要将其包含在视图组中.只需将relativeLayout作为它的父项放在XML文件中即可.

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