Android 如何从主视图访问地图片段
我有一个java类,它扩展了片段并扩展了xml布局。下面是我为该java类编写的代码:Android 如何从主视图访问地图片段,android,google-maps,android-fragments,android-mapview,Android,Google Maps,Android Fragments,Android Mapview,我有一个java类,它扩展了片段并扩展了xml布局。下面是我为该java类编写的代码: import android.content.SharedPreferences; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.vi
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.SupportMapFragment;
/**
* Created by Mike on 3/17/14.
*/
public class BreweryMap extends Fragment {
public BreweryMap(){}
String beerId = "";
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.activity_brewmap, container, false);
setHasOptionsMenu(true);
//get user information
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity());
String userName = prefs.getString("userName", null);
String userID = prefs.getString("userID", null);
//call async to get breweries to add to
GoogleMap mMap;
mMap = ((SupportMapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
//add url
String url = "hmyURL";
//send mMap over with async task
new GetVisitedBreweries(getActivity(), mMap).execute(url);
return rootView;
}
}
以下是正在膨胀的xml布局:
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name="com.google.android.gms.maps.MapFragment"/>
查看我的代码后,我认为为空是有意义的,因为它正在查找的片段ID位于我的rootView中,存储在此行:
mMap = ((SupportMapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
View rootView = inflater.inflate(R.layout.activity_brewmap, container, false);
如何从我的rootView成功访问地图片段?
我试过:
mMap = ((SupportMapFragment) rootView.getFragmentManager().findFragmentById(R.id.map)).getMap();
和其他组合。我觉得我很接近,但不是很接近 您正在混合Fragment和SupportFragment。在任何地方使用SupportFragment:
- 在布局中:使用
com.google.android.gms.maps.SupportMapFragment
- 在onCreate()中:使用
getSupportFragmentManager()