如何将我在非 Class 地方编写的变量调用到另一个类？

如何解决如何将我在非 Class 地方编写的变量调用到另一个类？

1.这里的“地址”变量给了我一个带坐标的城市名称。我想在改造中写这个地址而不是伊斯坦布尔，这样它就可以自动在地图上显示所选位置的天气。（谷歌地图)

private const val TAG = "MapViewFragment"
class MapViewFragment: Fragment(),OnMapReadyCallback {
    companion object{
        private lateinit var nMap: GoogleMap

        var address:String = ""
        var test:String = ""
        var test2:String = ""

        var cacik:String = "adana"

        private var markers:MutableList<Marker> = mutablelistof<Marker>()
    }

    override fun onActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceState)

        map_view.onCreate(savedInstanceState)
        map_view.onResume()
        map_view.getMapAsync(this)
        setToolbar()
    }

    override fun onMapReady(map: GoogleMap?) {

        if (map != null) {
            nMap = map
        }

        map?.let {
            nMap = it

            nMap.setonInfoWindowClickListener { markerToDelete ->
                Log.i(TAG,"onWindowsClickListener - Delete Thismarker")
                markers.remove(markerToDelete)
                markerToDelete.remove()
            }


            nMap.setonMapLongClickListener { latlng ->

                Log.i(TAG,"onMapLongClickListener" + latlng)

                Toast.makeText(
                    requireContext(),"this is toast message" + latlng,Toast.LENGTH_SHORT
                ).show()
                showAlertDialog(latlng)



                address= getAddress(latlng.latitude,latlng.longitude)
                test = getAddress(37.000000,35.321335)
                test2 = "istanbul"


                Log.d(TAG,"test5 $address ${latlng.latitude} ${latlng.longitude}")
                Toast.makeText(requireContext(),"test"+address,Toast.LENGTH_LONG).show()
            }
        }
    }


    private fun getAddress(lat: Double,lng: Double): String {
        val geocoder = Geocoder(requireContext())
        val list = geocoder.getFromLocation(lat,lng,1)
        return list[0].getAddressLine(0)
        //val stateName: String = addresses[0].getAddressLine(1)
    }

    private fun showAlertDialog(latlng: LatLng) {
        val dialog =
            AlertDialog.Builder(requireContext())
                .setTitle("Create a marker").setMessage("add marker...")
                .setNegativeButton("Cancel",null)
                .setPositiveButton("Ok",null)
                .show()

        dialog.getButton(DialogInterface.BUTTON_POSITIVE).setonClickListener {
            val marker = nMap.addMarker(
                MarkerOptions().position(latlng).title("my new marker").snippet(
                    "a cool snippet"
                )
            )
            markers.add(marker)

            dialog.dismiss()
        }

        dialog.getButton(DialogInterface.BUTTON_NEGATIVE).setonClickListener {
            dialog.dismiss()
        }

    }

    override fun onCreateView(
        inflater: LayoutInflater,container: ViewGroup?,savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(R.layout.mapviewfragment,container,false)
    }

    override fun onViewCreated(view: View,savedInstanceState: Bundle?) {
        super.onViewCreated(view,savedInstanceState)

    }

    private fun setToolbar(){
        val actionBar : ActionBar? =(requireActivity() as MainActivity).supportActionBar
        actionBar?.apply {
            title = getString(R.string.Kartenansicht)
            setdisplayShowTitleEnabled(true)
            setHomeButtonEnabled(true)
        }
    }
}

3.我只想在我的改造响应中调用“地址”。我想调用另一个类上的地址并写入伊斯坦布尔的位置。getter 和 setter 方法不起作用，因为我还没有写它们在班级中。我如何在另一个班级中使用该地址。

private const val TAG = "Retrofit Connection"


fun main(){
    retrofitResponse()

}

object RetrofitSetup {

    //var test = MapViewFragment.address
    var urlAll = "api.openweathermap.org/data/2.5/weather?q={city name}&appid={API key}"
    var url = "https://api.openweathermap.org/data/2.5/"
    val apiKey = "d459f98ffa705ad3f6c5e02f86d9fab9"

}

fun retrofitResponse(){

    val retrofit = Retrofit.Builder()
        .baseUrl(RetrofitSetup.url)
        .addConverterFactory(GsonConverterFactory.create())
        .build()
    val weatherApi = retrofit.create(CallWeatherApi::class.java)
    val weatherResponseCall = weatherApi.getWeather(MapViewFragment.test,RetrofitSetup.apiKey)


    weatherResponseCall!!.enqueue(object : Callback<CurrentWeatherResponse?> {
        override fun onResponse(call: Call<CurrentWeatherResponse?>,response: Response<CurrentWeatherResponse?>
        ) {
            if (response.code() == 404) {
                Log.d(TAG,"Successfuly")
            } else if (!response.isSuccessful) {
                Log.d(TAG,"Error")
            }

            val mydata = response.body()
            val main = mydata!!.main
            val temp = main!!.temp
            val pres =main!!.pressure
            val temperature = (temp!! - 273.15).toInt()
            Log.d("TAG","City pressure :" + pres)
            Log.d("TAG","City Temp : " + temperature)


        }
        override fun onFailure(call: Call<CurrentWeatherResponse?>,t: Throwable) {}
    })
}

if i write default istanbul.its working

if i create another varible in other class dosent work

exception

解决方法

将“retrofitResponse”放入“RetrofitSetup”并为地址添加参数

object RetrofitSetup {
    private const val urlAll = "api.openweathermap.org/data/2.5/weather?q={city name}&appid={API key}"
    private const val url = "https://api.openweathermap.org/data/2.5/"
    private const val apiKey = "keep this private"
    fun retrofitResponse(address: String) {
        ...
        val weatherResponseCall = weatherApi.getWeather(address,apiKey)
        ...
    }
}

然后将地址作为参数传递

nMap.setOnMapLongClickListener { latlng ->
    val address = getAddress(latlng.latitude,latlng.longitude)
    RetrofitSetup.retrofitResponse(address)
}