我创建的口袋妖怪应用程序没有运行[重复]

Question

我创建了一个口袋妖怪应用程序，但当我试图运行它时，它总是崩溃。应用程序只需要移动地图上的口袋妖怪。使用的IDE是Kotlin。请帮助我找到为什么我的应用程序崩溃的错误。代码是：class MapsActivity：AppCompatActivity（）,OnMapReadyCallback{

private lateinit var mMap: GoogleMap

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_maps)
    // Obtain the SupportMapFragment and get notified when the map is ready to be used.
    val mapFragment = supportFragmentManager
            .findFragmentById(R.id.map) as SupportMapFragment
    mapFragment.getMapAsync(this)

    checkPermission()
}
var ACCESSLOCATION=123

fun checkPermission(){
    if(Build.VERSION.SDK_INT>=23){
        if(ActivityCompat.checkSelfPermission(this,android.Manifest.permission.ACCESS_FINE_LOCATION)!=PackageManager.PERMISSION_GRANTED){
            requestPermissions(arrayOf(android.Manifest.permission.ACCESS_FINE_LOCATION),ACCESSLOCATION)
            return
        }
    }
    GetUserLocation()
}

fun GetUserLocation(){
    Toast.makeText(this,"User Location access on",Toast.LENGTH_LONG).show()
    // TODO: Will implement later

    var myLocation=MyLocationListener()
    var locationManager=getSystemService(Context.LOCATION_SERVICE) as LocationManager
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,3,3f,myLocation)
    var myThread=myThread()
    myThread.start()
}

override fun onRequestPermissionsResult(
    requestCode: Int,
    permissions: Array<out String>,
    grantResults: IntArray
) {
    when(requestCode){
        ACCESSLOCATION ->{
            if(grantResults[0]==PackageManager.PERMISSION_GRANTED){
                GetUserLocation()
            }
            else{
                Toast.makeText(this,"We cannot access your location",Toast.LENGTH_LONG).show()
            }
        }
    }
    super.onRequestPermissionsResult(requestCode, permissions, grantResults)
}
var location:Location?=null


/**
 * Manipulates the map once available.
 * This callback is triggered when the map is ready to be used.
 * This is where we can add markers or lines, add listeners or move the camera. In this case,
 * we just add a marker near Sydney, Australia.
 * If Google Play services is not installed on the device, the user will be prompted to install
 * it inside the SupportMapFragment. This method will only be triggered once the user has
 * installed Google Play services and returned to the app.
 */
override fun onMapReady(googleMap: GoogleMap) {
    mMap = googleMap

    // Add a marker in Sydney and move the camera

}

//Get your Location
inner class MyLocationListener:LocationListener{
    constructor(){
        location= Location("Start")
        location!!.longitude=0.0
        location!!.longitude=0.0
    }
    override fun onLocationChanged(p0: Location) {
        location=p0
    }

}

inner class myThread:Thread{
    constructor():super(){

    }

    override fun run(){
        while (true){
            try {
                runOnUiThread {
                    mMap.clear()
                    val sydney = LatLng(location!!.latitude, location!!.longitude)
                    mMap.addMarker(
                        MarkerOptions()
                            .position(sydney)
                            .title("Me")
                            .snippet("here is my location")
                            .icon(BitmapDescriptorFactory.fromResource(R.drawable.bulbasaur))
                    )
                    mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(sydney, 3f))

                }
                Thread.sleep(1000)
            }catch (ex:Exception){}
        }

    }
}

}

我的名字是Aakarsh Kamboj，我最近开始了android的开发

Answer 1

null