getMapAsync（this）クラッシュを修正するには？

Question

ちょっとAndroidスタジオで動作する位置情報サービスを取得しようとしています.getMapAsync（これ）がアプリをクラッシュさせています。誰かが私がどこを揺さぶっているかを私に見せることができれば、私はそれをとても感謝しています。

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

からgetMapAsync(this)を呼び出します。

は、以下のようにコードを更新します。

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. ：ここ

   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)); 
   } 
   
   ................... 
   ............... 
   

   はGoogleMapとLocation APIについていくつかの良いチュートリアルです