Question

尝试使用导航抽屉和碎片时，我遇到了一些困难。

main.xml中

    <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"
    tools:context=".GoogleMap" >

    <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">

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

    <!-- The navigation drawer -->
    <ListView android:id="@+id/left_drawer"
        android:layout_width="240dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:choiceMode="singleChoice"
        android:divider="#666"
        android:dividerHeight="1dp"
        android:background="#333"
        android:paddingLeft="15sp"
        android:paddingRight="15sp"
        />

    <fragment
        android:id="@+id/map"
        android:name="com.google.android.gms.maps.SupportMapFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    </android.support.v4.widget.DrawerLayout>

</LinearLayout>

因此，我面临的问题是，当我将设备从纵向旋转到横向或相反时，导航抽屉仅显示内容。如果我不倾斜设备，导航抽屉将保持为空。

片段基本上是一个所谓的div来显示地图。然后当我点击导航抽屉时，它将位于地图片段的顶部。我想知道我的布局哪个部分出了问题并造成了这个问题。

提前致谢。

已编辑的部分

<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
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <fragment
    android:id="@+id/map"
    android:name="com.google.android.gms.maps.SupportMapFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />
</LinearLayout>

<!-- The navigation drawer -->
<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>

GoogleMap.java

public class GoogleMap extends FragmentActivity {

    // Google Map
    private com.google.android.gms.maps.GoogleMap map;

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

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

        try {
            // Loading map
            initilizeMap();

        } catch (Exception e) {
            e.printStackTrace();
        }

        // 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);

        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.drawer_shadow, GravityCompat.START);
        drawerListView.setOnItemClickListener(new DrawerItemClickListener());
    }

    @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);
    }

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

    private class DrawerItemClickListener implements ListView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView parent, View view, int position, long id) {
            Toast.makeText(GoogleMap.this, ((TextView)view).getText(), Toast.LENGTH_LONG).show();
            //Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse("http://maps.google.com/maps?saddr=1.3564 ,103.8311&daddr=1.3426 ,103.9254"));
            //startActivity(i);
            drawerLayout.closeDrawer(drawerListView);

        }
    }

    /**
     * function to load map. If map is not created it will create it for you
     * */
    private void initilizeMap() {
        if (map == null) {
            map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(
                    R.id.map)).getMap();

            map.moveCamera( CameraUpdateFactory.newLatLngZoom(new LatLng(1.32814,103.80679) , 11.0f) );

            // check if map is created successfully or not
            if (map == null) {
                Toast.makeText(getApplicationContext(),
                        "Sorry! unable to create maps", Toast.LENGTH_SHORT)
                        .show();
            }
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        initilizeMap();
    }
}

Answer 1

您的布局有一个问题（我不认识其他人！）在LinearLayout中使用DrawerLayout，DrawerLayout应该是布局文件中的根视图。

Answer 2

您的drawerlayout直接有3个视图。抽屉里面必须只有2个视图。我建议将fragment和framelayout包装在linearlayout或relativelayout中。或者将片段嵌套在framelayout

中

Answer 3

你应该像这样编码：

<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" />
  <!-- The navigation drawer -->    
  <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>

修改在Activity中设置此FrameContent中的片段。

在你的onCreate（）中添加这一行


if（savedInstanceState == null）{
               initilizeMap（）;
          }

Android在抽屉布局中添加片段

3 个答案: