I`m developing an application that uses an activity with navigation drawer. I have two fragments in the drawer one of which is a google map.
In the map fragment class I want to initialize the GoogleMap object to do some things to the map, but in the onCreateView after I initialize the view through inflater, my app doesn't find the id in R class to initialize the google map.
I call the fragment from the activity through:
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.add(R.id.mainContent, map, Map.class.getSimpleName());
fragmentTransaction.addToBackStack(Map.class.getSimpleName());
fragmentTransaction.commit();
the container xml:
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<FrameLayout
android:id="#+id/mainContent"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</FrameLayout>
<ListView
android:id="#+id/drawerList"
android:layout_width="200dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#color/background_color" >
</ListView>
</android.support.v4.widget.DrawerLayout>
layout_fragment_map.xml:
<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
The Map fragment class:
public class Map extends Fragment {
private View view;
private MapFragment mapFragment;
private GoogleMap googleMap;
#Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (view != null) {
ViewGroup parent = (ViewGroup) view.getParent();
if (parent != null)
parent.removeView(view);
}
try {
view = inflater.inflate(R.layout.layout_fragment_map, container, false);
} catch (InflateException e) {
/* map is already there, just return view as it is */
}
mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map);
googleMap = mapFragment.getMap();
return view;
}
In the line:
mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map);
the R.id.map is undefined Eclipse gives "could not resolve type".
Something is missing or my whole concept is faulty?
Thank you and happy coding!
I resolved the issue by modifying the line:
mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.googleMap);
with
mapFragment = (MapFragment) getChildFragmentManager().findFragmentById(R.id.googleMap);
It is strange because the R.id.googleMap is still undefined but the object gets created correctly.
Related
I am developing an app that use fragments. One of my fragments i want to use google map but i am getting errors.
public class Map extends Fragment {
public Map() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
GoogleMap map = ((SupportMapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
//Error:(38, 84) error: inconvertible types
//required: SupportMapFragment
//found: Fragment
return inflater.inflate(R.layout.fragment_map, container, false);
}
}
When i trying to cast map fragment i am getting the error in comment. What should i do to solve this? Thanks for everyone.
Edit: the layout ;
<fragment
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment" />
You can go through this approach.This is my Fragment class which has MapView
public class DashBoardFragment extends Fragment{
//-------------- class variables
private MapView mMapView;
private GoogleMap mGoogleMap;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view= inflater.inflate(R.layout.fragment_dash_board, container, false);
mMapView = (MapView) view.findViewById(R.id.map_dashBoard);
mMapView.onCreate(savedInstanceState);
mMapView.onResume();
try {
MapsInitializer.initialize(getActivity().getApplicationContext());
} catch (Exception e) {
e.printStackTrace();
}
mGoogleMap = mMapView.getMap();
}
}
Below is my xml for the fragment
<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"
android:orientation="vertical"
tools:context="com.dev.abc">
<com.google.android.gms.maps.MapView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/map_dashBoard"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>
Manifest should have the following along with permissions
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="your api key" />
You are casting to a mapFragment AFTER the return statement. Since the program believes the method is complete at that point it never reaches it. Try this:
Inflater v = inflater.inflate(R.layout.fragment_map, container, false);
GoogleMap map = ((SupportMapFragment)v.getFragmentManager().findFragmentById(R.id.map)).getMap();
return v;
Also I don't see you using an intent to start the google map activity.
Latest update of Google for Maps, only MapView is supported for fragments.
<com.google.android.gms.maps.MapView
android:id="#+id/mapView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
I am trying to setup a Google Map in a fragment and am running into some issues trying to get the buttons to listen properly. I have the following code:
public DefaultMap extends android,.support.v4.app.Fragment implements OnMapReadyCallback {
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.map_fragment, container, false);
MapsInitializer.initialize(getActivity());
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
mMapFragment = new SupportMapFragment() {
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mMap = mMapFragment.getMap();
if (mMap != null) {
}
}
};
mMapFragment.getMapAsync(this);
// mAutocompleteView = (AutoCompleteTextView) findViewById(R.id.TFSearch);
// mAutocompleteView.setAdapter(new PlaceAutocompleteAdapter(this, android.R.layout.simple_dropdown_item_1line));
searchSetup(v);
zoomSetup(v);
setupMapType(v);
return v;
}
//an example of one of the setup functions
public void setupMapType(View view) {
typeMapButton = (Button) view.findViewById(R.id.TFtype);
typeMapButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (mMap.getMapType() == GoogleMap.MAP_TYPE_NORMAL) {
mMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
} else {
mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
}
}
});
}
}
relevant pieces of map_fragment.xml:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:tools="http://schemas.android.com/tools">
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/mapScreen"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:context=".DefaultMap"
android:name="com.google.android.gms.maps.SupportMapFragment"
/>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/map_type"
android:id="#+id/TFtype"
android:onClick="onTypeMap"
tools:context=".DefaultMap"
android:layout_marginRight="5dp" />
</LinearLayout>
</LinearLayout>
</FrameLayout>
And I am receiving the following error when clicking the buttons (same for all 4 buttons):
11-15 22:57:22.481 32523-32523/oose2017.place2b E/AndroidRuntime: java.lang.NullPointerException: Attempt to invoke virtual method 'int com.google.android.gms.maps.GoogleMap.getMapType()' on a null object reference
11-15 22:57:22.481 32523-32523/myproject E/AndroidRuntime: at myproject.interfaces.map.DefaultMap$5.onClick(DefaultMap.java:153)
Does anybody have any idea how I can fix these issues?
Use SupportMapFragment.newInstance() for getting new instance of SupportMapFragment for adding it from Fragment and also remove android:name="com.google.android.gms.maps.SupportMapFragment" from xml of DefaultMap Fragment.
See following tutorial for more information :
SupportMapFragment problem when loding in Fragment class
Im trying put a MapFragment inside a DialogFragment, it works fine but i dont know how can I wait until getMap()!=null... here´s my code:
public class DialogMapa extends DialogFragment{
private SupportMapFragment fragment;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.layout_dialog_mapa, container,false);
getDialog().requestWindowFeature(Window.FEATURE_NO_TITLE);
SupportMapFragment fragment = new SupportMapFragment();
FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
transaction.add(R.id.map, fragment).commit();
GoogleMap mapa = null;
try {
mapa =fragment.getMap();
} catch (Exception e) {
e.printStackTrace();
}
if (mapa==null) Toast.makeText(getActivity(), "NULL", Toast.LENGTH_SHORT).show();
return view;
}
}
and my inflate layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="0dp" >
<FrameLayout
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</FrameLayout>
</RelativeLayout>
Thanks in advance!!
So with the new maps framework, that call is not guaranteed to return non null. The map is pretty complex and is initializing a lot of state on and off the render thread.
In your case it's safe to call after onFragmentsResumed() or after the fragment is attached to an activity. You could always use a handler to check again some point later.
getMap() is not null inside onStart() of the dialog fragment, after view created.
I'm developing an app which uses fragment tab, one of my fragment uses Google Maps V2 "SupportMapFragment"
public class A extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState)
{
View view = null;
view = inflater.inflate(R.layout.all_coffee_shops_view, container, false);
map = ((SupportMapFragment) getActivity().getSupportFragmentManager()
.findFragmentById(R.id.map)).getMap();
}
}
my xml:
<RelativeLayout
android:id="#+id/map_container"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<fragment
android:id="#+id/map"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
class="com.google.android.gms.maps.SupportMapFragment"
/>
</RelativeLayout>
I'm calling B Fragment from this A fragment(A->B) and when I come back from B->, A fragment onCreateView throws an exception, "android.view.InflateException: Binary XML file line #132: Error inflating class fragment"
when once map fragment is created and when comes back to this fragment again fragment is onCreateView() is called that's why you are getting force close
Try this once in your fragment containing map
#Override
public void onDestroyView() {
super.onDestroyView();
Fragment f = getFragmentManager().findFragmentById(R.id.map);
if (f != null)
getFragmentManager().beginTransaction().remove(f).commit();
}
please comment me about the result
public void onDestroyView() {
super.onDestroyView();
Log.d(TAG, "onDestroyView");
Fragment f = getActivity()
.getSupportFragmentManager().findFragmentById(R.id.map);
if (f != null) {
getActivity().getSupportFragmentManager()
.beginTransaction().remove(f).commit();
}
}
I'm using sliding menu for Android here is the link, when I slide on rendered map fragment, the sliding menu goes blank.
Here is my map fragment code.
public class BasicMapActivity extends SherlockFragment {
private MapView mMapView;
private GoogleMap mMap;
#Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.basic_demo, null);
// view.setBackgroundColor(0x00000000);
mMapView = (MapView) view.findViewById(R.id.map);
container.requestTransparentRegion(mMapView);
mMapView.onCreate(savedInstanceState);
return view;
}
}
Here is my home activity where in i render map.
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home_frame);
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.home_screen, new BasicMapActivity())
.commit();
getSlidingMenu().setSecondaryMenu(
getLayoutInflater().inflate(R.layout.resq_events_frame, null));
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.resq_events_screen, new EventsFragment())
.commit();
// set the Behind View
setBehindContentView(R.layout.activity_settings_frame);
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.settings_screen, new SettingsFragment())
.commit();
// customize the SlidingMenu
getSlidingMenu().setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
}
My XML file looks like this
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/home_screen"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
How to overcome by this issue?
Here how the image looks.
The issue is due to GoogleMap, you have to add this map:zOrderOnTop="true" to your XML map layout, like
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<fragment
android:name="com.google.android.gms.maps.SupportMapFragment"
xmlns:map="http://schemas.android.com/apk/res-auto"
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
map:zOrderOnTop="true" />
</LinearLayout>