Android:所有活动的导航抽屉 [英] Android: Navigation-Drawer on all activities

问题描述

我想在我的 Android 项目的所有活动中添加导航抽屉.这是 MainActivity 的代码:

I want to add navigation drawer on all actvities of my Android project. This is the code of the MainActivity:

public class MainActivity extends Activity {


        private String[] drawerListViewItems;
        private DrawerLayout drawerLayout;
        private ListView drawerListView;
        private ActionBarDrawerToggle actionBarDrawerToggle;

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

            // get list items from strings.xml
            drawerListViewItems = getResources().getStringArray(R.array.items);


            // get ListView defined in activity_main.xml
            drawerListView = (ListView) findViewById(R.id.left_drawer);

            // Set the adapter for the list view
            drawerListView.setAdapter(new ArrayAdapter<String>(this,
                    R.layout.drawer_listview_item, drawerListViewItems));

            // App Icon 
            drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
            //drawerLayout = (DrawerLayout) findViewById(R.drawable.ic_drawer_2);

            actionBarDrawerToggle = new ActionBarDrawerToggle(
                    this,                  /* host Activity */
                    drawerLayout,         /* DrawerLayout object */
                    R.drawable.ic_drawer,  /* nav drawer icon to replace 'Up' caret */
                    R.string.drawer_open,  /* "open drawer" description */
                    R.string.drawer_close  /* "close drawer" description */
                    );

            // Set actionBarDrawerToggle as the DrawerListener
            drawerLayout.setDrawerListener(actionBarDrawerToggle);

            getActionBar().setDisplayHomeAsUpEnabled(true); 

            // just styling option add shadow the right edge of the drawer
        drawerLayout.setDrawerShadow(R.drawable.ic_drawer, GravityCompat.START);

        drawerListView.setOnItemClickListener(new DrawerItemClickListener());
    }

    @Override
        protected void onPostCreate(Bundle savedInstanceState) {
            super.onPostCreate(savedInstanceState);
            // Sync the toggle state after onRestoreInstanceState has occurred.
            actionBarDrawerToggle.syncState();
        }

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

        @Override
        public boolean onOptionsItemSelected(MenuItem item) {

             // call ActionBarDrawerToggle.onOptionsItemSelected(), if it returns true
            // then it has handled the app icon touch event
            if (actionBarDrawerToggle.onOptionsItemSelected(item)) {
                return true;
            }
            return super.onOptionsItemSelected(item);
        }

        private class DrawerItemClickListener implements ListView.OnItemClickListener {
            @Override
            public void onItemClick(AdapterView parent, View view, int position, long id) {

                    displayView(position);

                drawerLayout.closeDrawer(drawerListView);

            }

            private void displayView(int position) 
            {
                switch (position) 
                {
                case 0:
                    secondactivity();
                    break;


                case 1:
                    Toast.makeText(MainActivity.this, "2", Toast.LENGTH_LONG).show();
                    break;

                case 2:
                    Toast.makeText(MainActivity.this, "3", Toast.LENGTH_LONG).show();

                default:
                    break;
                }

            }
        }

        public void secondactivity (){

            Intent cambioActivity;

            cambioActivity = new Intent (this, SecondActivity.class);

            startActivity(cambioActivity);
        }
}

在这段代码中，我创建了导航抽屉，我想要所有活动的导航抽屉，所以我的第二个活动的代码是这样的:

In this code I create the navigation drawer, I want the navigation drawer on all activities, so my Second Activity's code is this:

public class SecondActivity extends MainActivity {

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

    }

导航抽屉在第一个活动上，但在其他活动上没有，为什么?有人可以帮我吗?

The navigation drawer is on the first activity but there isn't on other activities, why? Can someone help me?

推荐答案

最简单的方法是创建片段.如果你准备好做一些困难的事情，那么这就是给你的.它将让您在所有活动中拥有相同的导航抽屉.

The easy way is that you should create fragments. If you are ready to for little hard thing then this is for you. It will let you have same navigation drawer in all activities.

创建drawer_n_activity.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

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

<YourDrawer
    android:id="@+id/drawer_drawer"
    android:layout_width="match_parent"
    android:layout_height="fill_parent" >

</YourDrawer>

</RelativeLayout>

你的DrawerActivity.class

public class DrawerActivity extends Activity {

    public RelativeLayout fullLayout;
    public FrameLayout frameLayout;

    @Override
    public void setContentView(int layoutResID) {

        fullLayout = (RelativeLayout) getLayoutInflater().inflate(R.layout.drawer_n_activity, null);
        frameLayout = (FrameLayout) fullLayout.findViewById(R.id.drawer_frame);

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

        super.setContentView(fullLayout);

        //Your drawer content...

    }
}

现在，要在您的所有活动中包含相同的导航抽屉并记住一件事，您的所有活动必须扩展 DrawerActivity

Now, to include same Navigation Drawer in all your activities and mind one more thing, all your activities must extend DrawerActivity

public class MainActivity extends DrawerActivity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main); //layout for 1st activity
   }
}

public class SecondActivity extends DrawerActivity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.second_activity); //layout for 2nd activity
   }
}

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