Android 在片段中显示地图

在我的应用程序中，我想在一个片段中显示谷歌地图。下面是我的活动课

public class MainActivity extends Activity {
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;

private CharSequence mDrawerTitle;
private CharSequence mTitle;
private String[] mPlanetTitles;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mTitle = mDrawerTitle = getTitle();
    mPlanetTitles = getResources().getStringArray(R.array.planets_array);
    mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    mDrawerList = (ListView) findViewById(R.id.left_drawer);
    mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,
            GravityCompat.START);

    mDrawerList.setAdapter(new ArrayAdapter<String>(this,
            R.layout.drawer_list_item, mPlanetTitles));
    mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
    getActionBar().setDisplayHomeAsUpEnabled(true);
    getActionBar().setHomeButtonEnabled(true);
    mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
            R.drawable.ic_launcher, R.string.app_name,
            R.string.action_settings) {
        public void onDrawerClosed(View view) {
            getActionBar().setTitle(mTitle);
            invalidateOptionsMenu();
        }

        public void onDrawerOpened(View drawerView) {
            getActionBar().setTitle(mDrawerTitle);
            invalidateOptionsMenu();
        }
    };
    mDrawerLayout.setDrawerListener(mDrawerToggle);

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

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.main, menu);
    return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onPrepareOptionsMenu(Menu menu) {
    boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
    menu.findItem(R.id.action_websearch).setVisible(!drawerOpen);
    return super.onPrepareOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    if (mDrawerToggle.onOptionsItemSelected(item)) {
        return true;
    }
    switch (item.getItemId()) {
    case R.id.action_websearch:
        Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
        intent.putExtra(SearchManager.QUERY, getActionBar().getTitle());
        if (intent.resolveActivity(getPackageManager()) != null) {
            startActivity(intent);
        } else {
            Toast.makeText(this, "Nothing", Toast.LENGTH_LONG).show();
        }
        return true;
    default:
        return super.onOptionsItemSelected(item);
    }
}

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

private void selectItem(int position) {
    onItemSelected(mPlanetTitles[position]);
    mDrawerList.setItemChecked(position, true);
    setTitle(mPlanetTitles[position]);
    mDrawerLayout.closeDrawer(mDrawerList);
}

@Override
public void setTitle(CharSequence title) {
    mTitle = title;
    getActionBar().setTitle(mTitle);
}

/**
 * When using the ActionBarDrawerToggle, you must call it during
 * onPostCreate() and onConfigurationChanged()...
 */

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

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

public void onItemSelected(String link) {
    DetailFragment fragment = (DetailFragment) getFragmentManager()
            .findFragmentById(R.id.detailFragment);

    fragment.setText(link);

}

以及fragment_rssitem_detail.xml文件

<?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" >

<TextView
    android:id="@+id/detailsText"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal|center_vertical"
    android:layout_marginTop="20dip"
    android:text="Default Text"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:textSize="30dip" />

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

    <fragment
            android:id="@+id/map"
            class="com.google.android.gms.maps.SupportMapFragment"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_margin="8dp" />
</FrameLayout>

<!-- <ListView
    android:id="@+id/list_fragment"
    android:name="com.myapp.ListFragment"
    android:layout_width="wrap_content"
    android:layout_height="fill_parent" /> -->

</LinearLayout>

---

仅将线性布局放在要将地图放入xml的位置，并按如下编程方式推送地图：

private SupportMapFragment mapFragment;

mapFragment = new SupportMapFragment();
addFragment(lnrMap.getId(), mapFragment); //lnrMap is your LinearLayout from xml.
googleMap = mapFragment.getExtendedMap();

AddFragment方法（），将此方法放入DetailFragment类中：

public void addFragment(int layoutId, Fragment fragment) {
        FragmentManager fm = getChildFragmentManager();
        FragmentTransaction ft = fm.beginTransaction();
        ft.replace(layoutId, fragment);
        ft.commit();
    }

---

Android不支持通过xml嵌套片段。因此，您需要在xml中指定的framelayout中推送片段运行时。由于我是android片段和映射的新手，请与我分享一个好的教程或示例程序来解决此问题。提前谢谢你送这个

private SupportMapFragment mapFragment;

mapFragment = new SupportMapFragment();
addFragment(lnrMap.getId(), mapFragment); //lnrMap is your LinearLayout from xml.
googleMap = mapFragment.getExtendedMap();

public void addFragment(int layoutId, Fragment fragment) {
        FragmentManager fm = getChildFragmentManager();
        FragmentTransaction ft = fm.beginTransaction();
        ft.replace(layoutId, fragment);
        ft.commit();
    }