How to use SupportMapFragment inside a Fragment?

Question

I know that there has been an issue in using a nested fragment. But my application was designed to run on fragments and if i will be using activity for the map, my casting functions will have error.

I would like to ask help from you on how to achieve this. I've been searching in the internet but i couldn't find best solution.

I've tried this code:

private void setUpMapIfNeeded() {     // Do a null check to confirm that we have not already instantiated the map.     if (mMap == null) {         // Try to obtain the map from the SupportMapFragment.         mMap = ((SupportMapFragment) myFragmentActivity.getSupportFragmentManager().findFragmentById(R.id.map_con))                 .getMap();         // Check if we were successful in obtaining the map.         if (mMap != null) {             mMap.setMyLocationEnabled(true);         }     } } 

this would give me duplicate error because of R.id.map_con is a fragment inside my fragment.

So I look for a work around, this time, R.id.map_con is a frame layout and in the run time I created the SupportMapFragment to it.

SupportMapFragment mSupportMapFragment = new SupportMapFragment();     myFragmentActivity.getSupportFragmentManager().beginTransaction()             .replace(R.id.map_con, mSupportMapFragment).commit(); 

though this does not give me a duplicate every time a close and open the fragment. but my error is that mSupportMapFragment.getMap is always null., I don't get it why its null?.

mMap = mSupportMapFragment.newInstance().getMap();         if (mMap != null){             Log.e("ReportFragment","mMap is not empty");         }else{             Log.e("ReportFragment","mMap is empty");         } 

I would really appreciate any inputs from you guys, or do you have another work around but still in this process, i.e Fragment inside fragment

Thanks

chkm8

Answer 1

getMap() is deprecated

The code should be something like this in a Fragment:

@Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {      View v = inflater.inflate(R.layout.fragment_location, container, false);      mMapFragment = (SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map);     mMapFragment.getMapAsync(this);      return v;    } 

Answer 2

I just met my luck, while making this post,I found what Im looking for.

I have used this:

 @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {     View v = inflater.inflate(R.layout.fragment_location, container, false);     mMapFragment = new SupportMapFragment() {         @Override         public void onActivityCreated(Bundle savedInstanceState) {             super.onActivityCreated(savedInstanceState);             mMap = mMapFragment.getMap();             if (mMap != null) {                 setupMap();             }         }     };     getChildFragmentManager().beginTransaction().add(R.id.framelayout_location_container, mMapFragment).commit(); return v;    } 

Credit to this Old post