Followed a tutorial to work with Google Maps and it works well. Now I'd like to have this map placed within a fragment for a TableLayout and can't figure out how to change the code for SupportFragmentManager (which drops an error). I get "UNREACHABLE CODE" when I replace it with childFragmentManager.
Here is my code:
class FragItLocate : Fragment(), OnMapReadyCallback, GoogleMap.OnMarkerClickListener {
private lateinit var mMap: GoogleMap
override fun onMarkerClick(p0: Marker?)=false
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
return inflater.inflate(R.layout.frag_it_locate,container,false)
val mapFragment = childFragmentManager
.findFragmentById(R.id.map2) as SupportMapFragment
mapFragment.getMapAsync(this)
}
override fun onMapReady(googleMap: GoogleMap) {
mMap = googleMap
mMap.setOnMarkerClickListener(this)
mMap.uiSettings.isZoomControlsEnabled = true
// Add a marker in Atlantic Lawn and Garden and move the camera
val alg = LatLng(41.4958611, -71.3768593)
mMap.addMarker(MarkerOptions().position(alg).title("Atlantic Lawn and Garden"))
mMap.moveCamera(CameraUpdateFactory.newLatLng(alg))
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(alg, 17.05f))
}
}
Update: I've tried the answer but my app crash with this error
Because when you call this line
return inflater.inflate(R.layout.frag_it_locate, container, false)
it will exit onCreateView method and do not execute all statements after that line. That why your get UNREACHABLE CODE error.
So change your code to
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
val mapFragment = childFragmentManager
.findFragmentById(R.id.map2) as SupportMapFragment
mapFragment.getMapAsync(this)
return inflater.inflate(R.layout.frag_it_locate, container, false);
}
Update: You got that error because this line.
val mapFragment = childFragmentManager
.findFragmentById(R.id.map2) as SupportMapFragment
If findFragmentById(R.id.map2) return null, your app will crash because you are using Unsafe Cast operator.
You can prevent that by using Smart Cast operator.
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
val mapFragment = childFragmentManager
.findFragmentById(R.id.map2) as SupportMapFragment?
mapFragment?.getMapAsync(this)
return inflater.inflate(R.layout.frag_it_locate, container, false);
}
Update 2: Based on your comment about onMapReady not called.
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
val mapFragment = childFragmentManager
.findFragmentById(R.id.map2) as SupportMapFragment?
if (mapFragment == null) {
mapFragment = SupportMapFragment.newInstance();
childFragmentManager.beginTransaction().replace(R.id.map2, mapFragment).commit();
}
mapFragment?.getMapAsync(this)
return inflater.inflate(R.layout.frag_it_locate, container, false);
}
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