Android：多个活动的导航抽屉

Question

我正在尝试通过创建我的所有其他活动都继承自的 DrawerActivity 来实现多个活动的导航抽屉。

我已使用以下 2 个链接将我带到我所在的位置：

https://developer.android.com/training/implementing-navigation/nav-drawer.html

sliding drawer appear in all activities

我可以看到导航抽屉（抓取手柄），但是我无法通过单击操作栏中的标题来打开它，也看不到抽屉中的任何项目。但是，我可以通过滑动打开它。

DrawerActivity.java

public class DrawerActivity extends Activity {

    private DrawerLayout mDrawerLayout;
    private ListView mDrawerList;
    private ActionBarDrawerToggle mDrawerToggle;
    private String[] navOptions = new String[] {"Collect Offers", 
        "Exclusive", "Glove Box", "Servicing", "Dealer", "Settings"};

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

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

        mDrawerList.setAdapter(new ArrayAdapter<String>(
            this, R.layout.drawer_list_item, navOptions));

        mDrawerToggle = new ActionBarDrawerToggle(
                this,
                mDrawerLayout,
                R.drawable.ic_drawer,
                R.string.drawer_open,
                R.string.drawer_close
        ) {

            public void onDrawerClosed(View view) {
                super.onDrawerClosed(view);
                getActionBar().setTitle(R.string.app_name);
            }

            public void onDrawerOpened(View drawerView) {
                super.onDrawerOpened(drawerView);
                getActionBar().setTitle(R.string.app_name);
            }
        };

        mDrawerLayout.setDrawerListener(mDrawerToggle);

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

    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        mDrawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (mDrawerToggle.onOptionsItemSelected(item)) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @Override
    public void setContentView(final int layoutResID) {
        DrawerLayout fullLayout = (DrawerLayout) getLayoutInflater()
            .inflate(R.layout.activity_drawer, null);
        LinearLayout actContent = (LinearLayout) fullLayout
            .findViewById(R.id.content);
        getLayoutInflater().inflate(layoutResID, actContent, true);
        super.setContentView(fullLayout);
    }
}

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_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/content"
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/infiniti_splash_2x">
    </LinearLayout>

    <ListView android:id="@+id/nav_drawer"
        android:layout_width="@dimen/nav_drawer_width"
        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>

HomeActivity.java

public class HomeActivity extends DrawerActivity {

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

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        return super.onOptionsItemSelected(item);
    }
}

activity_home.xml

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

Answer 1

解决了我的问题。问题在于，通过覆盖 setContentView，它在 ActionBarDrawerToggle 已经设置之后被第二次调用（来自 HomeActivity OnCreate()）。这意味着我基本上覆盖了 DrawerActivity OnCreate() 中完成的所有工作。

这是我在 DrawerActivity 中修改的代码

public class DrawerActivity extends Activity {

    protected ActionBarDrawerToggle mDrawerToggle;
    private String[] navOptions = new String[] {"Collect Offers", "Exclusive", "Glove Box",
            "Servicing", "Dealer", "Settings"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.activity_drawer); NO LONGER REQUIRED



    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        mDrawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (mDrawerToggle.onOptionsItemSelected(item)) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @Override
    public void setContentView(final int layoutResID) {
        DrawerLayout fullLayout= (DrawerLayout) getLayoutInflater()
                .inflate(R.layout.activity_drawer, null);
        LinearLayout actContent= (LinearLayout) fullLayout.findViewById(R.id.content);

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

        mDrawerList.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_list_item, navOptions));

        mDrawerToggle = new ActionBarDrawerToggle(
                this,
                mDrawerLayout,
                R.drawable.ic_drawer,
                R.string.drawer_open,
                R.string.drawer_close
        ) {

            public void onDrawerClosed(View view) {
                super.onDrawerClosed(view);
                getActionBar().setTitle(R.string.app_name);
            }

            public void onDrawerOpened(View drawerView) {
                super.onDrawerOpened(drawerView);
                getActionBar().setTitle(R.string.app_name);
            }
        };

        mDrawerLayout.setDrawerListener(mDrawerToggle);

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

        getLayoutInflater().inflate(layoutResID, actContent, true);
        super.setContentView(fullLayout);
    }
}