Question

嗨，大家好我是Android的新手，我正处于学习阶段。我从androidhive开始关注导航抽屉教程，并使该代码向后兼容2.3.3。但我得到的错误如下：

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.assignment.drawersam/com.assignment.drawersam.MainDrawerActivity}: java.lang.IllegalArgumentException: View android.widget.ListView{4170e148 VFED.VC. ......I. 0,0-0,0 #7f05003e app:id/list_slidermenu} is not a sliding drawer

我无法理解错误是什么以及如何纠正错误。任何帮助将不胜感激。

onCreate（）中的

代码：

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

mTitle = mDrawerTitle = getTitle();
// load slide menu items
navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);

        // nav drawer icons from resources
        navMenuIcons = getResources()
                .obtainTypedArray(R.array.nav_drawer_icons);

        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        mDrawerList = (ListView) findViewById(R.id.list_slidermenu);

        navDrawerItem = new ArrayList<NavDrawerItem>();

        // adding nav drawer items to array
        // Home
        navDrawerItem.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1)));
        // Find People
        navDrawerItem.add(new NavDrawerItem(navMenuTitles[1], navMenuIcons.getResourceId(1, -1)));


        // Recycle the typed array
        navMenuIcons.recycle();

        mDrawerList.setOnItemClickListener(new SlideMenuClickListener());

        // setting the nav drawer list adapter
        adapter = new NavDrawerListAdapter(getApplicationContext(),
                navDrawerItem);
        mDrawerList.setAdapter(adapter);

        // enabling action bar app icon and behaving it as toggle button
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setHomeButtonEnabled(true);

        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
                R.drawable.ic_drawer, //nav menu toggle icon
                R.string.app_name, // nav drawer open - description for accessibility
                R.string.app_name // nav drawer close - description for accessibility
        ) {
            public void onDrawerClosed(View view) {
                getSupportActionBar().setTitle(mTitle);
                // calling onPrepareOptionsMenu() to show action bar icons
                supportInvalidateOptionsMenu();
            }

            public void onDrawerOpened(View drawerView) {
                getSupportActionBar().setTitle(mDrawerTitle);
                // calling onPrepareOptionsMenu() to hide action bar icons
                supportInvalidateOptionsMenu();
            }
        };
        mDrawerLayout.setDrawerListener(mDrawerToggle);

        if (savedInstanceState == null) {
            // on first time display view for first nav item
            displayView(0);
        }
    }

activity_main_drawer.xml中的代码：

<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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainDrawerActivity" >

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

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

        <ListView
            android:id="@+id/list_slidermenu"
            android:layout_width="240dp"
            android:layout_height="match_parent"
            android:background="#fff"
            android:choiceMode="singleChoice"
            android:divider="#369"
            android:dividerHeight="1dp"
            android:gravity="start"
            android:listSelector="@drawable/list_selector" />
    </android.support.v4.widget.DrawerLayout>

</LinearLayout>

Answer 1

如documentation中所述，DrawerLayout必须是布局的根视图。

删除LinearLayout并让DrawerLayout成为根视图。

Answer 2

我已经开发了与早期版本的android（Api等级7及以上版本）兼容的版本，你需要android支持库v7才能使它工作。这是完整的代码：Sliding menu based on androidhive code for api level 7 and above

ListVIew不是滑动抽屉

2 个答案: