android - 导航抽屉未打开

Question

所以最初我是按照本教程来创建自定义导航抽屉：http://www.tutecentral.com/android-custom-navigation-drawer/。

但由于我想使用 BaseActivity，我根据这个 SO 帖子对其进行了修改：creating base activity with navigation drawer in android。

但是，当我单击应该触发抽屉的按钮时，日志会显示活动：

[0,Home]

和

com.android.internal.view.menu.ActionMenuItem@1796f4d4

但是没有打开抽屉，也没有抛出错误。

<!-- activity_base.xml -->
<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/content_frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
    <ListView android:id="@+id/left_drawer"
        android:layout_width="240dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:choiceMode="singleChoice"
        android:divider="@android:color/transparent"
        android:dividerHeight="0dp"
        android:background="#111"/>
</android.support.v4.widget.DrawerLayout>

我的 BaseActivity.java 的（我猜）相关部分：

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_base);

    getActionBar().setDisplayHomeAsUpEnabled(true);
    getActionBar().setDisplayShowHomeEnabled(false);
    getActionBar().setHomeButtonEnabled(true);

    if (savedInstanceState == null) {
        displayView(0);
    }
}

private class SlideMenuClickListener implements ListView.OnItemClickListener {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        // display view for selected nav drawer item
        displayView(position);
    }
}   

@Override
public void setContentView(int layoutResID) {
    super.setContentView(layoutResID);
    mDrawerLayout = (DrawerLayout) getLayoutInflater().inflate(R.layout.activity_base, null);
    mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
    mContentFrame = (FrameLayout) mDrawerLayout.findViewById(R.id.content_frame);

    getLayoutInflater().inflate(layoutResID, mContentFrame, true);

    mTitle = mDrawerTitle = getTitle();

    navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);
    navMenuIcons = getResources().obtainTypedArray(R.array.nav_drawer_icons);

    navDrawerItems = new ArrayList<NavDrawerItem>();
    navDrawerItems.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1)));

    navMenuIcons.recycle();

    mDrawerToggle = new ActionBarDrawerToggle(
            this,                  
            mDrawerLayout,         
            R.drawable.ic_drawer,  
            R.string.drawer_open,  
            R.string.drawer_close  
            ) {
        public void onDrawerClosed(View view) {
            getActionBar().setTitle(mTitle);
            System.out.println("CLOSED");
            invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
        }
        public void onDrawerOpened(View drawerView) {
            getActionBar().setTitle(mDrawerTitle);
            System.out.println("OPENED");
            invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
        }
        public void onDrawerStateChanged(int newState) {
            System.out.println("STATUS: "+newState);
        }
    };

    mDrawerLayout.setDrawerListener(mDrawerToggle);

    mDrawerList = (ListView) findViewById(R.id.left_drawer);        
    adapter = new NavDrawerListAdapter(getApplicationContext(), navDrawerItems);
    mDrawerList.setAdapter(adapter);
    mDrawerList.setOnItemClickListener(new SlideMenuClickListener());
}

Answer 1

所以，深入研究https://developer.android.com/training/implementing-navigation/nav-drawer.html 的代码，结果证明我应该使用

mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);

代替

mDrawerLayout = (DrawerLayout) getLayoutInflater().inflate(R.layout.activity_base, null);

我不确定 Inflater 是从哪里来的，但至少它现在可以工作了。