Googleマップのマーカーが動作しない

Question

最近「FusedLocationApi」が推奨されなくなりました。私のコードは正常に動作し、私の活動は場所を取得しますが、マーカーを設定しようとすると動作しません。私はとても混乱しています、誰かが私がどこに行方不明を見つけるのを助けることができますか？

ここに私のコード。

class DealerMapsActivity : FragmentActivity(), 
    OnMapReadyCallback, 
    GoogleApiClient.ConnectionCallbacks, 
    GoogleApiClient.OnConnectionFailedListener{ 

private val TAG = "DealerMapsActivity" 
private var mMap: GoogleMap? = null 
private var mGoogleApi: GoogleApiClient? = null 
private lateinit var binding: ActivityDealerMapsBinding 
private var myLastLocation: Location? = null 
private var myMarker: Marker? = null 
private var mFusedLocationClient: FusedLocationProviderClient? = null 

override fun onCreate(savedInstanceState: Bundle?) { 
    super.onCreate(savedInstanceState) 
    Log.d(TAG,"onCreate") 
    binding = DataBindingUtil.setContentView(this,R.layout.activity_dealer_maps) 
    val mapFragment = supportFragmentManager 
      .findFragmentById(R.id.map) as SupportMapFragment 
    mapFragment.getMapAsync(this) 
    mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this) 
} 

この場合、LocationCallbackを使用して場所を取得します。

private var mLocationCallback: LocationCallback = object : LocationCallback() { 
    override fun onLocationResult(locationResult: LocationResult?) { 

     for (location in locationResult!!.locations) { 
      Log.i(TAG, "accuracy: "+ location.accuracy + " Location: " + 
        location.latitude + " " + location.longitude) 
      myLastLocation = location 
     } 
     SetMapMarker() 
     if(myLastLocation!!.accuracy > 0) { 
      Log.i(TAG, "set accuracy into text: "+ myLastLocation!!.accuracy) 
      binding.vAccurate.text = 
        "Accurate to "+myLastLocation!!.accuracy.toInt().toString()+ " meters" 
     } 
    } 

} 

ここで私のコードはマップマーカーを設定します。

fun SetMapMarker(){ 
    Log.i(TAG, "set marker") 
    if(myMarker != null){ 
     myMarker!!.remove() 
    } 
    val latlng = LatLng(myLastLocation!!.latitude, myLastLocation!!.longitude) 
    if(myMarker == null){ 
     myMarker = mMap!!.addMarker(
       MarkerOptions() 
         .position(latlng) 
         .icon(BitmapDescriptorFactory 
           .defaultMarker(BitmapDescriptorFactory.HUE_BLUE)) 
     ) 
    } 
    myMarker!!.snippet = "ok" 
    myMarker!!.title = "i'm here" 

    val camera = CameraPosition 
      .builder() 
      .target(latlng) 
      .zoom(16.0F) 
      .build() 
    mMap!!.animateCamera(CameraUpdateFactory.newCameraPosition(camera)) 
} 

}

Answer 1

@Jラメシュとして、非常に面白い示唆しています。私はこれで置き換えます。

fun SetMapMarker(){ 
val latlng = LatLng(myLastLocation!!.latitude, myLastLocation!!.longitude) 
Log.i(TAG, "set marker") 
if(myMarker != null){ 
    myMarker!!.position = latlng 
} 

if(myMarker == null){ 
    myMarker = mMap!!.addMarker(
      MarkerOptions() 
        .position(latlng) 
        .icon(BitmapDescriptorFactory 
          .defaultMarker(BitmapDescriptorFactory.HUE_BLUE)) 
    ) 


// you can set title and message only one time not required all time (if you want to change message every time then write these line outside if statement) 
myMarker!!.snippet = "ok" 
myMarker!!.title = "i'm here" 
} 

val camera = CameraPosition 
     .builder() 
     .target(latlng) 
     .zoom(16.0F) 
     .build() 
mMap!!.animateCamera(CameraUpdateFactory.newCameraPosition(camera)) 
} 

希望の助手。