问题
I have my android application which was using Google Map API v1 key and it was working fine. Now I need to give my code to my professor and show him the working demo from scratch on a new desktop machine. So that means, now I cannot use Google Map API v1 key anymore so that is the reason I needed to make some changes in the code that I have for Google Map API key v1 so that it can be used with Google Map API v2 key.
I am trying to show google map on top half of the android screen and in my bottom half, I am trying to show the list view.
Below is the code which works fine with Google Map API v1 key and now I need to make changes in the below code to make it work with Google Map API v2 key meaning I need to show Google Map on top half of the android screen.
private GoogleMap map;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle bundle = getIntent().getExtras();
user_id = bundle.getString("USERID");
LayoutInflater inflater = LayoutInflater.from(this);
scrollView = (MyHorizontalScrollView) inflater.inflate(R.layout.horz_scroll_with_list_menu, null);
setContentView(scrollView);
menu = inflater.inflate(R.layout.horz_scroll_menu, null);
app = inflater.inflate(R.layout.horz_scroll_app, null);
ViewGroup tabBar = (ViewGroup) app.findViewById(R.id.tabBar);
initViewMembers(app); // I need to modify something in this method only
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
initMyLocationOverview();
registerLocationListener();
Button button1 = (Button) menu.findViewById(R.id.button1);
Button button2 = (Button) menu.findViewById(R.id.button2);
useLastKnownLocation(locationManager);
final View[] children = new View[] { menu, app };
// Scroll to app (view[1]) when layout finished.
int scrollToViewIdx = 1;
scrollView.initViews(children, scrollToViewIdx,
new SizeCallbackForMenu(btnSlide));
}
This is the method I am supposed to modify. How can I modify the below method so that it will work with Google Map V2
/**
* Initialize the map with default settings
*
*/
private void initViewMembers(View app2) {
mapView = (MapView) app2.findViewById(R.id.mapView);
//map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
listView = (ListView) app2.findViewById(R.id.mylist);
mapView.setBuiltInZoomControls(true);
mapController = mapView.getController();
mapController.setZoom(14);
mapView.setStreetView(true);
}
If you see in my above initViewMembers method I am using app2 view to get the mapView id and then use it in another place. If I am going to use Google Map API v2 key then I need to use MapFragment as mentioned in my next line which I have commented out. Now I am wondering how can I get the map id from the app2 view if I am using Google Map API key v2
So my question is how to get the MapFragment thing from the view?
Below is my horz_scroll_app xml file which has fragment for Google Map v2
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/app"
android:layout_width="1dp"
android:layout_height="1dp"
android:layout_margin="2px"
android:orientation="vertical"
android:padding="2px" >
<LinearLayout
android:id="@+id/tabBar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageView
android:id="@+id/BtnSlide"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="0px"
android:padding="0px"
android:src="@drawable/button" />
</LinearLayout>
<!--
<com.google.android.maps.MapView
android:id="@+id/mapView"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:apiKey="0s_fADEBtq0-j_teQ1j-yaoDAivoHHtwN81rJ-g"
android:clickable="true"
android:state_enabled="true" />
-->
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="0.8"
android:orientation="horizontal" >
<ListView
android:id="@+id/mylist"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1" >
</ListView>
</LinearLayout>
</LinearLayout>
I cannot do something like this in my above initViewMembers method-
map = ((MapFragment) app2.findFragmentById(R.id.map)).getMap();
I am looking for something similar.
回答1:
Add this in your xml
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.SupportMapFragment"/>
This is how you can get the object reference
GoogleMap mMap = ((SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map)).getMap();
1) you need to import google-play-services_lib to your workspace. 2) add android-support-v4.jar 3) in you developer console activate android google maps v2 and get the api key. 4) add follwing permissions to manifest
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<!--
The following two permissions are not required to use
Google Maps Android API v2, but are recommended.
-->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<permission
android:name="YOURPACKAGE.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="YOURPACKAGE.permission.MAPS_RECEIVE" />
回答2:
I did like this..
public class CustomSupportMapFragment extends SupportMapFragment {
private GoogleMap map;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup view,
Bundle savedInstance) {
View layout = super.onCreateView(inflater, view, savedInstance);
FrameLayout frameLayout = new FrameLayout(getActivity());
frameLayout.setBackgroundColor(getResources().getColor(
android.R.color.transparent));
((ViewGroup) layout).addView(frameLayout, new ViewGroup.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
map=getMap();
return layout;
}
/*public static CustomSupportMapFragment newInstance(GoogleMapOptions op) {
CustomSupportMapFragment frag = new CustomSupportMapFragment();
return frag;
}
*/
public GoogleMap getMapInstance() {
// TODO Auto-generated method stub
return map;
}
}
xml..
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="300dp"
class="com.maps.utils.CustomSupportMapFragment" />
来源：https://stackoverflow.com/questions/16662220/how-to-get-fragment-from-the-view-for-google-map-v2