Wie getMapAsync (dieser) Absturz beheben?

Question

Hey, ich versuche Location Services für Android Studio zu bekommen und .getMapAsync (dies) stürzt die App immer wieder ab. Wenn mir jemand zeigen kann, wo ich mich verpfeife, würde ich es sehr schätzen.

GoogleMap memberMap; 
GoogleApiClient memberAPI; 
LocationRequest memberLocationRequest; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    if (googleServicesAvailable()) { 

     setContentView(R.layout.activity_main_page); 

     onMapReady(memberMap); 
    } else { 
     Toast.makeText(this, "Google services not available", Toast.LENGTH_LONG); 
     //to be done 
    } 
} 
@Override 
public void onMapReady(GoogleMap googleMap) { 
    memberMap = googleMap; 

    //memberMap.setMapType(GoogleMap.MAP_TYPE_HYBRID); 
    SupportMapFragment mapFragment =(SupportMapFragment) getSupportFragmentManager() 
      .findFragmentById(R.id.mapfragment); 
    mapFragment.getMapAsync(this); 





    LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 
    if(!locationManager.isProviderEnabled((LocationManager.GPS_PROVIDER))){ 
     buildAlertMessageNoGps(); 
    } 

    if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 
     if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED || ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) { 
      buildGoogleApiClient(); 
      memberMap.setMyLocationEnabled(true); 
     } 
    } 

} 

Answer 1

Anruf getMapAsync(this) von onCreate() Methode.

Aktualisieren Sie Ihren Code wie folgt:

GoogleMap memberMap; 
GoogleApiClient memberAPI; 
LocationRequest memberLocationRequest; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    if (googleServicesAvailable()) { 
     setContentView(R.layout.activity_main_page); 

     SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.mapfragment); 
     mapFragment.getMapAsync(this); 
    } else { 
     Toast.makeText(this, "Google services not available", Toast.LENGTH_LONG); 
    } 
} 

@Override 
public void onMapReady(GoogleMap googleMap) { 
    memberMap = googleMap; 

    LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 
    if(!locationManager.isProviderEnabled((LocationManager.GPS_PROVIDER))){ 
     buildAlertMessageNoGps(); 
    } 

    if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 
     if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED || ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) { 
      buildGoogleApiClient(); 
      memberMap.setMyLocationEnabled(true); 
     } else { 
      buildGoogleApiClient(); 
      memberMap.setMyLocationEnabled(true); 
     } 
    } 

    // Add markers 
    LatLng sydney = new LatLng(-34, 151); 
    memberMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney")); 
    memberMap.moveCamera(CameraUpdateFactory.newLatLng(sydney)); 
} 

................... 
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Hier einige gute Anleitung sind über GoogleMap und Location API:

1. Developing an Android app having Google Maps
2. Google Map Tutorial in Android Studio: How to get current location in Android Google Map
3. Android Developer’s Guide to the Google Location Services API