Question

我成功创建了一个ListView，并使用AndroidStudio提供的示例将其显示为滑动菜单，以创建滑动菜单

现在我想在ListView上面添加一个布局（显示已登录用户的名称和图像，但为了简化我只想放一个TextView）。

我尝试了以下操作，但没有成功：

layout_menu.xml（当我想显示菜单时出现的布局。这被修改为放置textview）

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".NavigationDrawerFragment">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" 
        android:text="User logged in"/>

    <ListView
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:choiceMode="singleChoice"
        android:divider="@android:color/transparent"
        android:dividerHeight="0dp"
        android:background="@color/fondo_menu"
        android:id="@+id/listaMenu"
        tools:context=".NavigationDrawerFragment" />
</LinearLayout>

activity_base.xml（显示菜单的活动使用的那个，未被修改）

<!-- A DrawerLayout is intended to be used as the top-level content view using match_parent for both width and height to consume the full space available. -->
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:id="@+id/drawer_layout"
    android:layout_width="match_parent" android:layout_height="match_parent"
    tools:context=".BaseActivity">

    <!-- As the main content view, the view below consumes the entire
         space available using match_parent in both dimensions. -->
    <ViewFlipper
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/container">
    </ViewFlipper>

    <!-- android:layout_gravity="start" tells DrawerLayout to treat
         this as a sliding drawer on the left side for left-to-right
         languages and on the right side for right-to-left languages.
         If you're not building against API 17 or higher, use
         android:layout_gravity="left" instead. -->
    <!-- The drawer is given a fixed width in dp and extends the full height of
         the container. -->
    <fragment android:id="@+id/navigation_drawer"
        android:layout_width="@dimen/navigation_drawer_width" android:layout_height="match_parent"
        android:layout_gravity="start"
        android:name="com.proyecto.cutcsa.cutcsa.Interfaz.ElementosUI.NavigationDrawerFragment"
        tools:layout="@layout/layout_menu"/><!--tools:layout="@layout/fragment_navigation_drawer" -->

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

NavigationDrawerFragment类（仅修改onCreateView以显示新菜单）

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        /*start modified code*/
        View view = inflater.inflate(R.layout.layout_menu, container, false);
        mDrawerListView = (ListView) view.findViewById(R.id.listaMenu);
        /*finish modified code*/
        mDrawerListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                selectItem(position);
            }
        });
    }

但我得到java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first. onCreate（）上会出现此错误，尤其是我要显示菜单的活动中的setContentView(R.layout.activity_base)行。

我定义的onCreate方法：

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_base);
        Bundle bundle = getIntent().getExtras();

        mNavigationDrawerFragment = (NavigationDrawerFragment)
                getSupportFragmentManager().findFragmentById(R.id.navigation_drawer);
        mTitle = getTitle();
        try{
            mTitle = bundle.getString("title_menu");
        }catch(Exception ex){}

        // Set up the drawer.
        mNavigationDrawerFragment.setUp(R.id.navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout));
    }

我做错了什么？

Answer 1

您尝试将片段充气2次，此处：

<fragment android:id="@+id/navigation_drawer"
        android:layout_width="@dimen/navigation_drawer_width" android:layout_height="match_parent"
        android:layout_gravity="start"
        android:name="com.proyecto.cutcsa.cutcsa.Interfaz.ElementosUI.NavigationDrawerFragment"
        tools:layout="@layout/layout_menu"/><!--tools:layout="@layout/fragment_navigation_drawer" -->

您只需将此布局（导航抽屉内容）添加到您的活动中：

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:id="@+id/drawer_layout"
    android:layout_width="match_parent" android:layout_height="match_parent">

    <!-- USE VIEWPAGER INSTEAD -->
    <ViewFlipper
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/container">
    </ViewFlipper>

    <LinearLayout
    android:layout_width="280dp"
    android:layout_height="match_parent"
    android:layout_gravity="start">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" 
            android:text="User logged in"/>

        <ListView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:choiceMode="singleChoice"
            android:divider="@android:color/transparent"
            android:dividerHeight="0dp"
            android:background="@color/fondo_menu"
            android:id="@+id/listaMenu"/>

    </LinearLayout>

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

Answer 2

使用Android Design Support Library

大大简化了此模式

文章说要像这样创建你的抽屉：

<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.support.design.widget.NavigationView
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        app:headerLayout="@layout/drawer_header"
        app:menu="@menu/drawer"
/>
</android.support.v4.widget.DrawerLayout>

headerLayout指的是位于列表上方的布局（您的帐户详细信息布局）。菜单是标准菜单资源，其中一个例子是：

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<group
    android:id="@+id/nav_group_fragments"
    android:checkableBehavior="single">
    <item
        android:id="@+id/nav_home_one"
        android:checked="true"
        android:title="@string/home"
        android:icon="@drawable/ic_home"/>

    <item android:id="@+id/nav_offers"
        android:icon="@drawable/ic_my_offers"
        android:title="@string/offers"/>

    <item
        android:id="@+id/nav_aroundme"
        android:title="@string/aroundme"
        android:icon="@drawable/ic_around_me"/>
</group>

<group android:id="@+id/nav_group_activities">

    <item
        android:id="@+id/nav_help"
        android:title="@string/help"
        android:icon="@drawable/ic_help"/>

    <item android:id="@+id/nav_settings"
        android:title="@string/action_settings"
        android:icon="@drawable/ic_settings"/>

    <item android:id="@+id/nav_logout"
        android:icon="@drawable/ic_disconnect"
        android:title="@string/disconnect"/>

</group>
</menu>

为具有您创建的ID的每个组自动插入分隔符

Answer 3

查看下面的链接，您将获得所需的一切。导航抽屉的一个非常简单的例子。

http://www.androidhive.info/2013/11/android-sliding-menu-using-navigation-drawer/

将ListView和TextView放在NavigationDrawerFragment

3 个答案: