android - 如何使抽屉导航对所有 Activity 都是静态的

Question

我这里有 3 个 Activity ，我希望每个 Activity 都继承我的抽屉导航。我查看了许多其他资源，但对于如何实现它仍然有些困惑。

下面是我的BaseActivity、HomeActivity、ScheduleActivity

这是我的基本 Activity :

public class BaseActivity extends Activity {

ExpandableListAdapter listAdapter;
ExpandableListView expListView;

public DrawerLayout drawer;
ImageView navDrawerBtn;

HashMap<String, List<String>> listDataChild;
List<String> listDataHeader;
ArrayList<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
@Override
protected void onCreate(Bundle savedInstanceState) {


    if (android.os.Build.VERSION.SDK_INT > 9) {
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
    }


    navDrawerBtn = (ImageView)findViewById(R.id.headerDrawer);
    expListView = (ExpandableListView) findViewById(R.id.lvExp);

    if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.JELLY_BEAN_MR2) {
        expListView.setIndicatorBounds(402,465);    
    } else {        
        expListView.setIndicatorBoundsRelative(402,465);    
    } 

    drawer = (DrawerLayout)findViewById(R.id.drawer_layout);
        ;
    prepareListData();



    navDrawerBtn.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            if(!drawer.isDrawerOpen(expListView)) {
                drawer.openDrawer(expListView);
                } else {
                    drawer.closeDrawer(expListView);
                }

            }
        });


    //listAdapter = new ExpandableListAdapter(this, listDataHeader, listDataChild);

    // setting list adapter
    expListView.setAdapter(listAdapter);

    // Listview Group click listener
    expListView.setOnGroupClickListener(new OnGroupClickListener() {

        @Override
        public boolean onGroupClick(ExpandableListView parent, View v,
                int groupPosition, long id) {
            // Toast.makeText(getApplicationContext(),
            // "Group Clicked " + listDataHeader.get(groupPosition),
            // Toast.LENGTH_SHORT).show();
            return false;
        }
    });

    // Listview Group expanded listener
    expListView.setOnGroupExpandListener(new OnGroupExpandListener() {

        @Override
        public void onGroupExpand(int groupPosition) {
            Toast.makeText(getApplicationContext(),
                    listDataHeader.get(groupPosition) + " Expanded",
                    Toast.LENGTH_SHORT).show();
        }
    });

    // Listview Group collasped listener
    expListView.setOnGroupCollapseListener(new OnGroupCollapseListener() {

        @Override
        public void onGroupCollapse(int groupPosition) {
            Toast.makeText(getApplicationContext(),
                    listDataHeader.get(groupPosition) + " Collapsed",
                    Toast.LENGTH_SHORT).show();

        }
    });

    // Listview on child click listener
    expListView.setOnChildClickListener(new OnChildClickListener() {

        @Override
        public boolean onChildClick(ExpandableListView parent, View v,
                int groupPosition, int childPosition, long id) {

            switch (childPosition) {
            case 0: 
                Intent a = new Intent(getApplicationContext(), MainActivity.class);
                startActivity(a);
                break;

            case 1: 
                Intent b = new Intent(getApplicationContext(), ScheduleActivity.class);
                startActivity(b);
                break;
}
            return false;
            // TODO Auto-generated method stub
 //             Toast.makeText(
//                      getApplicationContext(),
//                      listDataHeader.get(groupPosition)
//                              + " : "
//                              + listDataChild.get(
//                                      listDataHeader.get(groupPosition)).get(
//                                      childPosition), Toast.LENGTH_SHORT)
//                      .show();
//              return false;
        }
    });
 }


/*
 * Preparing the list data
 */
private void prepareListData() {


    listDataHeader = new ArrayList<String>();
    listDataChild = new HashMap<String, List<String>>();

    // Adding child data
    listDataHeader.add("VRP Medical Bay");
    //listDataHeader.add("");
    //listDataHeader.add("");

    // Adding child data

    List<String> listUnderVRP = new ArrayList<String>();

    listUnderVRP.add("eDataClinical");
    listUnderVRP.add("Schedule");
    listUnderVRP.add("Dictate");
    listUnderVRP.add("View Messages");
    listUnderVRP.add("Reports for Signature");
    listUnderVRP.add("View Billing");
    listUnderVRP.add("View State");


    listDataChild.put(listDataHeader.get(0), listUnderVRP); // Header, Child data
    //listDataChild.put(listDataHeader.get(1), nowShowing);
    //listDataChild.put(listDataHeader.get(2), comingSoon);


}



 }

这是我的日程安排 Activity :

public class ScheduleActivity extends BaseActivity {

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


    drawer = (DrawerLayout)findViewById(R.id.drawer_layout);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

}

我的抽屉导航布局:

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

<RelativeLayout
    android:layout_width="fill_parent"
    android:layout_height="73dp"
    android:background="@color/actionbar" >

    <ImageView
        android:id="@+id/headerDrawer"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:src="@drawable/ic_drawer"
        android:contentDescription="@string/desc" />

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/actionHeaderText"
        android:layout_toRightOf="@+id/headerDrawer"
        android:src="@drawable/e_icon"
        android:contentDescription="@string/desc"  />

    <TextView
        android:id="@+id/actionHeaderText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:layout_toRightOf="@+id/imageView1"
        android:text="@string/actionbar_title"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:textColor="@color/white"
        android:textSize="32sp"
        android:textStyle="bold"
        android:typeface="monospace" />

</RelativeLayout>

<android.support.v4.widget.DrawerLayout

        android:id="@+id/drawer_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <!-- The main content view -->
        <FrameLayout
            android:id="@+id/content_frame"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
        <!-- The navigation drawer -->

         <ExpandableListView
            android:id="@+id/lvExp"
            android:layout_width="470dp"
            android:layout_height="match_parent"
            android:groupIndicator="@drawable/group_selector"
             android:transcriptMode="alwaysScroll"
            android:layout_gravity="start"

            android:cacheColorHint="#00000000" >
        </ExpandableListView>
    </android.support.v4.widget.DrawerLayout>

</LinearLayout>

和我的日程安排:

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

</LinearLayout>

Answer 1

在 Schedule 的 onCreate 中不要调用 setContentView 而是这样做:

@Override
protected void onCreate(Bundle savedInstanceState)
{
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    LayoutInflater inflater = (LayoutInflater) this
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View contentView = inflater.inflate(R.layout.schedule, null, false);
    mDrawer.addView(contentView, 0); 
}

使 MainActivity 中的 mDrawer 受到保护。在 R.layout.drawer_layout 中，只保留抽屉标签和重力向左(或向右)的元素。