Develop Reference

FusedLocationClient requestLocationUpdates runs through Callback only once instead of calling it at the given interval

I need to implement an android foreground Service that publishes a users position every 800 - 1000ms to the cloud. For this I used googles FusedLocationClient (especially the upper part from this medium.com article. As can be seen in the code down below I do create a LocationRequest using set parameters and after that retrieve the FusedLocationClient. Then after that, I call requestLocationUpdates() with the build LocationRequest, the defined Callback and a Looper (I tried myLooper() as well as getMainLooper() and whilst debugging I confirmed that the looper runs as should).
I expected the Callback to be called every 800 - 1000 ms with an updated Location. In reality though the Callback is just called once and then never again.. which I debugged for quite some time now, but didn't find a solution for.
This is my code:
import android.Manifest
import android.annotation.SuppressLint
import android.app.Notification
import android.app.NotificationChannel
import android.app.NotificationManager
import android.app.Service
import android.content.Intent
import android.content.pm.PackageManager
import android.location.Location
import android.os.HandlerThread
import android.os.IBinder
import android.os.Looper
import android.util.Log
import androidx.core.app.ActivityCompat
import com.google.android.gms.location.FusedLocationProviderClient
import com.google.android.gms.location.LocationCallback
import com.google.android.gms.location.LocationRequest
import com.google.android.gms.location.LocationResult
import com.google.android.gms.location.LocationServices
import com.company.automotive.MainActivity
import kotlin.concurrent.thread
class KinesisLocationUpdatesService : Service() {
private val TAG = KinesisLocationUpdatesService::class.java.simpleName
private lateinit var mLocationRequest: LocationRequest
private lateinit var mFusedLocationClient: FusedLocationProviderClient
private var mLocationCallback = object : LocationCallback() {
override fun onLocationResult(locationResult: LocationResult) {
val currentLocation: Location = locationResult.lastLocation
Log.i(TAG, "User(id=$userId) at Location(" + currentLocation.latitude.toString() + ", " + currentLocation.longitude + ") and Token(t=$firebaseToken)")
// Publish to cloud
}
}
// constant data
private val FOREGROUND_ID = 1001
private val UPDATE_INTERVAL_IN_MILLISECONDS: Long = 800
private val PERMISSIONS_GRANTED_REQUEST_CODE = 225
private var userId: String? = null
private var firebaseToken: String? = null
//onCreate
override fun onCreate() {
super.onCreate()
initData()
}
override fun onDestroy() {
super.onDestroy()
mFusedLocationClient.removeLocationUpdates(this.mLocationCallback)
}
private fun startLocationUpdates() {
if (ActivityCompat.checkSelfPermission(
this,
Manifest.permission.ACCESS_FINE_LOCATION
) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(
this,
Manifest.permission.ACCESS_COARSE_LOCATION
) != PackageManager.PERMISSION_GRANTED
) {
Log.i(TAG, "Not all required permissions are given.")
ActivityCompat.requestPermissions(
MainActivity.context,
arrayOf(
Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.ACCESS_FINE_LOCATION
),
PERMISSIONS_GRANTED_REQUEST_CODE
)
Thread.sleep(10_000) // Bad style btw, please ignore
startLocationUpdates()
}
this.mFusedLocationClient.requestLocationUpdates(this.mLocationRequest,
this.mLocationCallback, Looper.myLooper()!!) // Looper.getMainLooper())
}
override fun onBind(intent: Intent?): IBinder? {
return null
}
override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
//onTaskRemoved(intent)
val providedExtras = intent?.extras
if (providedExtras === null && (userId === null || firebaseToken === null)) {
throw Exception("Cannot launch service without userId and firebaseToken.")
}
userId = providedExtras!!.getString("authUserIdentifier")
firebaseToken = providedExtras.getString("firebaseToken")
prepareForegroundNotification()
startLocationUpdates()
return START_STICKY
}
private fun prepareForegroundNotification() {
val CHANNELID = "Foreground Service ID"
val channel = NotificationChannel(
CHANNELID,
CHANNELID,
NotificationManager.IMPORTANCE_HIGH
)
getSystemService(NotificationManager::class.java).createNotificationChannel(channel)
val notification: Notification.Builder = Notification.Builder(this, CHANNELID)
.setContentText("Service is running")
.setContentTitle("Service enabled")
startForeground(FOREGROUND_ID, notification.build())
}
private fun initData () {
this.mLocationRequest = LocationRequest.create().apply {
interval = UPDATE_INTERVAL_IN_MILLISECONDS + 200
fastestInterval = UPDATE_INTERVAL_IN_MILLISECONDS
priority = LocationRequest.PRIORITY_HIGH_ACCURACY
}
this.mFusedLocationClient =
LocationServices.getFusedLocationProviderClient(MainActivity.context)
}
override fun onTaskRemoved(rootIntent: Intent?) {
Log.i(TAG, "Removing $TAG and reinitializing.")
val restartServiceIntent = Intent(this, this.javaClass)
restartServiceIntent.putExtra("authUserIdentifier", userId)
restartServiceIntent.putExtra("firebaseToken", firebaseToken)
restartServiceIntent.setPackage(packageName)
super.onTaskRemoved(rootIntent)
startForegroundService(restartServiceIntent)
}
}
I hope I get assistance in finding the error.

Retrieving Coarse Location to retrieve Lat and Lon values

I apologize in advance for any of the amateur moves that I've made in the code below. This is my first Android app. It's a weather app and I am trying to implement a button that will retrieve the local weather based on where the phone is located. After tapping the button, the user will first be asked to allow location permission (coarse location), and then I'm attempting to use FusedLocationProviderClient to retrieve the latitude and longitude, which can then be used to make an api call to get the weather data. This is for a class, so I'm required to use something close to the approach I'm attempting to take in my code.
I'm 99% sure I have the location permission portion of the code working correctly. I've been running the app through the debugger and based on the path it's following, the permission is being requested and then is showing as permission granted when it should be showing as such. My problem is that something is wrong with the code that retrieves location data for the lat and lon values. I can see in the debugger that they are still null when I try to send them to the view model for the api call. (I've marked the line where I get a NullPointerException in the fragment below -- it's about 2/3 of the way down the file.)
One important thing that is worth noting: I have a red error line under "override" in this code in the fragment:
locationCallback = object : LocationCallback() {
override fun onLocationResult(locationResult: LocationResult?) {
locationResult ?: return
super.onLocationResult(locationResult)
for (location in locationResult.locations) {
lat = location.latitude.toString()
lon = location.longitude.toString()
}
}
}
I have seen this basic code setup in several examples, so I'm assuming it doesn't always have the red line. The error says "onLocationResult overrides nothing." If I remove the question mark on that line, the red line goes away, but I don't know if doing that is part of what is causing my problem. I suspect that this code is the problem since I don't think the app ever gets to the lines that assign values to lat and lon. For the record, this is how I have to modify the code to get rid of the red line so the app can run (question mark removed and line after it removed, but I just commented it out here):
locationCallback = object : LocationCallback() {
override fun onLocationResult(locationResult: LocationResult) {
//locationResult ?: return
super.onLocationResult(locationResult)
for (location in locationResult.locations) {
lat = location.latitude.toString()
lon = location.longitude.toString()
}
}
}
I've been looking at videos and reading answers on Stack Overflow for most of the day and haven't found anything that quite matches what I'm trying to do here. I've tried moving different methods from Activity to Fragment and back again. It always seems to come down to I'm simply not pulling in the location data properly to get those lat/lon values. At this point, I'm just hoping to find people who know more than I do to look at the code and see if something obvious is wrong. I feel like it might be something minor, but I could be wrong.
MainActivity:
package com.example.weatherapp
import android.Manifest
import android.app.AlertDialog
import android.content.pm.PackageManager
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.core.app.ActivityCompat
import com.example.weatherapp.databinding.ActivityMainBinding
import dagger.hilt.android.AndroidEntryPoint
#AndroidEntryPoint
class MainActivity : AppCompatActivity(), ActivityCompat.OnRequestPermissionsResultCallback {
private val apiKey = "5025177c6bd1ce93f4ffa221fd7f7c8c"
private val REQUEST_LOCATION_PERMISSION = 1234
private lateinit var binding: ActivityMainBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityMainBinding.inflate(layoutInflater)
setContentView(binding.root)
}
fun requestLocationPermission() {
if (ActivityCompat.shouldShowRequestPermissionRationale(
this,
Manifest.permission.ACCESS_COARSE_LOCATION)
) {
showLocationPermissionRationale()
} else {
ActivityCompat.requestPermissions(
this,
arrayOf(Manifest.permission.ACCESS_COARSE_LOCATION),
REQUEST_LOCATION_PERMISSION
)
}
}
private fun showLocationPermissionRationale() {
AlertDialog.Builder(this)
.setMessage(R.string.location_permission_rationale)
.setNeutralButton(R.string.ok) { _, _ ->
ActivityCompat.requestPermissions(
this,
arrayOf(Manifest.permission.ACCESS_COARSE_LOCATION),
REQUEST_LOCATION_PERMISSION
)
}
.create()
.show()
}
override fun onRequestPermissionsResult(
requestCode: Int,
permissions: Array<out String>,
grantResults: IntArray
) {
if (requestCode == REQUEST_LOCATION_PERMISSION) {
if (grantResults.size == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission granted - Should I have something here??
}
} else {
super.onRequestPermissionsResult(requestCode, permissions, grantResults)
}
}
}
SearchFragment:
package com.example.weatherapp
import android.Manifest
import android.content.pm.PackageManager
import android.os.Bundle
import android.os.Looper
import android.text.Editable
import android.text.TextWatcher
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.core.content.ContextCompat
import androidx.fragment.app.Fragment
import androidx.navigation.Navigation
import com.example.weatherapp.databinding.FragmentSearchBinding
import com.google.android.gms.location.*
import dagger.hilt.android.AndroidEntryPoint
import javax.inject.Inject
#AndroidEntryPoint
class SearchFragment : Fragment() {
private lateinit var binding: FragmentSearchBinding
#Inject lateinit var searchViewModel: SearchViewModel
private lateinit var fusedLocationClient: FusedLocationProviderClient
private lateinit var locationRequest: LocationRequest
private lateinit var locationCallback: LocationCallback
private var lat: String? = null
private var lon: String? = null
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
fusedLocationClient = LocationServices.getFusedLocationProviderClient(activity as MainActivity)
locationRequest = LocationRequest.create()
locationCallback = object : LocationCallback() {
override fun onLocationResult(locationResult: LocationResult?) {
locationResult ?: return
super.onLocationResult(locationResult)
for (location in locationResult.locations) {
lat = location.latitude.toString()
lon = location.longitude.toString()
}
}
}
binding = FragmentSearchBinding.inflate(layoutInflater)
return binding.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
requireActivity().title = "Search"
searchViewModel.enableButton.observe(this) { enable ->
binding.button.isEnabled = enable
}
searchViewModel.showErrorDialog.observe(this) { showError ->
if (showError) {
ErrorDialogFragment().show(childFragmentManager, ErrorDialogFragment.TAG)
}
}
binding.zipCode.addTextChangedListener(object : TextWatcher {
override fun beforeTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {
}
override fun onTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {
p0?.toString()?.let { searchViewModel.updateZipCode(it) }
}
override fun afterTextChanged(p0: Editable?) {
}
})
binding.button.setOnClickListener {
searchViewModel.submitButtonClicked()
if(!(searchViewModel.showErrorDialog.value!!)) {
val currentConditionsArg = SearchFragmentDirections.searchToCurrent(
searchViewModel.currentConditions.value,
searchViewModel.returnZipCode(),
null,
null
)
Navigation.findNavController(it).navigate(currentConditionsArg)
} else {
searchViewModel.resetErrorDialog()
}
}
// New location code starts here:
binding.localWeatherButton.setOnClickListener {
if (ContextCompat.checkSelfPermission(
(activity as MainActivity), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
startLocationUpdates()
searchViewModel.localWeatherButtonClicked(lat!!, lon!!) <- lat/lon still NULL!
if(!(searchViewModel.showErrorDialog.value!!)) {
val currentConditionsArg = SearchFragmentDirections.searchToCurrent(
searchViewModel.currentConditions.value,
null,
lat,
lon
)
Navigation.findNavController(it).navigate(currentConditionsArg)
} else {
searchViewModel.resetErrorDialog()
}
} else {
(activity as MainActivity).requestLocationPermission()
}
}
}
private fun startLocationUpdates() {
if (ContextCompat.checkSelfPermission(activity as MainActivity,
Manifest.permission.ACCESS_COARSE_LOCATION
) == PackageManager.PERMISSION_GRANTED
) {
fusedLocationClient.requestLocationUpdates(
locationRequest,
locationCallback,
Looper.getMainLooper()
)
} else {
// permission not granted (though it should be since we wouldn't get here if it wasn't...)
}
}
}

Unable to get data from Intent in Activity

I am very new to Kotlin and Android Development and really wanting to get into it. I am doing a project to help me understand and work with intent. The goal is simple, an android app that gets the users location in one activity, then passes it on to the next activity, where I intend to use it ( in the form of longitude and latitude). However I have been trying for hours to get the data to pass as an extra. The error that is show says nullpointer:
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Intent.getStringExtra(java.lang.String)' on a null object reference
at com.tba.mypoint_ofinterest.LocationInfo.<init>(LocationInfo.kt:11)
The two files relevant to this are:
AddLocation.kt - This is where I get the users location. Then the user presses a button: "btn_accept" and then I want it go to the LocationInfo.kt activity.
LocationInfo.kt-This is where I want to receive the location data and where the error message keeps getting thrown.
Here is the AddLocation.kt code:
import android.content.Intent
import android.content.pm.PackageManager
import android.location.Location
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.os.Looper
import android.view.View
import android.widget.Toast
import androidx.core.app.ActivityCompat
import com.google.android.gms.location.*
import kotlinx.android.synthetic.main.activity_add_location.*
class AddLocation : AppCompatActivity() {
//variables needed for location grab
lateinit var fusedLocationProviderClient: FusedLocationProviderClient
lateinit var locationRequest: LocationRequest
lateinit var locationCallback: LocationCallback
var REQUEST_CODE = 1000
lateinit var userLocation: Location
//Deal with permissions
override fun onRequestPermissionsResult(
requestCode: Int,
permissions: Array<out String>,
grantResults: IntArray
) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults)
when (requestCode) {
REQUEST_CODE -> {
if (grantResults.size > 0) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED)
Toast.makeText(this, "Permission Granted", Toast.LENGTH_SHORT).show()
else
Toast.makeText(this, "Permission Denied", Toast.LENGTH_SHORT).show()
}
}
}
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_add_location)
//Check for permission!
if (ActivityCompat.shouldShowRequestPermissionRationale(
this,
android.Manifest.permission.ACCESS_FINE_LOCATION
)
)
ActivityCompat.requestPermissions(
this,
arrayOf(android.Manifest.permission.ACCESS_FINE_LOCATION),
REQUEST_CODE
)
else {
buildLocationRequest()
buildLocationCallback()
//Create fused provider client
fusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(this)
//get location
//start getting location
btnGetLocation.setOnClickListener(View.OnClickListener {
if (ActivityCompat.checkSelfPermission(
this,
android.Manifest.permission.ACCESS_FINE_LOCATION
) != PackageManager.PERMISSION_GRANTED
) {
ActivityCompat.requestPermissions(
this,
arrayOf(android.Manifest.permission.ACCESS_FINE_LOCATION),
REQUEST_CODE
)
return#OnClickListener
}
fusedLocationProviderClient.requestLocationUpdates(
locationRequest, locationCallback,
Looper.myLooper()
)
//make the button invisible after clicked
btnGetLocation.visibility = View.INVISIBLE
})
}
//Listen for clicking add location then turn off GPS and proceed to next view
btn_accept.setOnClickListener {
if (ActivityCompat.checkSelfPermission(
this,
android.Manifest.permission.ACCESS_FINE_LOCATION
) != PackageManager.PERMISSION_GRANTED
) {
ActivityCompat.requestPermissions(
this,
arrayOf(android.Manifest.permission.ACCESS_FINE_LOCATION),
REQUEST_CODE
)
}
fusedLocationProviderClient.removeLocationUpdates(locationCallback)
locationCallback = object : LocationCallback() {
override fun onLocationResult(p0: LocationResult?) {
userLocation = p0!!.locations.get(p0!!.locations.size - 1) //get last location
}
}
var long = userLocation.longitude
var lat = userLocation.latitude
addInfo(long,lat)
}
}
private fun buildLocationCallback() {
locationCallback = object : LocationCallback() {
override fun onLocationResult(p0: LocationResult?) {
var location = p0!!.locations.get(p0!!.locations.size - 1) //get last location
userLocation = location
txtLocation.text =
location.latitude.toString() + "/" + location.longitude.toString() + "and accuracy" + location.accuracy.toString()
}
}
}
private fun buildLocationRequest() {
locationRequest = LocationRequest()
locationRequest.priority = LocationRequest.PRIORITY_HIGH_ACCURACY
locationRequest.interval = 5000
locationRequest.fastestInterval = 3000
locationRequest.smallestDisplacement = 10f
}
//This gives intent and takes the GPS data to the next view to be combined with user input
fun addInfo(long:Double,lat:Double) {
val infoIntent: Intent = Intent(this, LocationInfo::class.java).apply {
putExtra("LAT_DATA", lat)
putExtra("LONG_DATA",long)
}
startActivity(infoIntent)
}
//Stop getting location data if back button is pressed
override fun onSupportNavigateUp(): Boolean {
fusedLocationProviderClient.removeLocationUpdates(locationCallback)
return super.onSupportNavigateUp()
}
}
Here is the LocationInfo.kt code:
import android.content.Intent
import android.location.Location
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.View
import kotlinx.android.synthetic.main.activity_location_info.*
class LocationInfo : AppCompatActivity() {
val longitude = intent.getStringExtra("LONG_DATA")
val latitude = intent.getStringExtra("LAT_DATA")
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_location_info)
btnSaveLocation.setOnClickListener{view ->saveInfo(view)}
textView2.text = longitude.toString()+"/"+latitude.toString()
}
fun saveInfo(x: View?){
val saveIntent: Intent = Intent(this,MainActivity::class.java)
startActivity(saveIntent)
}
}
I don't think I really understand how to use intent properly or I am mislabeling the loction data somewhere. Any advice is welcome, thank you

The issue is you are trying to access the intent even before the onCreate() is called, as a result intent is null.
Follow this,
class LocationInfo : AppCompatActivity() {
private lateinit var longitude:Double
private lateinit var latitude:Double
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_location_info)
btnSaveLocation.setOnClickListener{view ->saveInfo(view)}
longitude = intent.getDoubleExtra("LONG_DATA",0.0)
latitude = intent.getDoubleExtra("LAT_DATA",0.0)
textView2.text = longitude.toString()+"/"+latitude.toString()
}
fun saveInfo(x: View?){
val saveIntent: Intent = Intent(this,MainActivity::class.java)
startActivity(saveIntent)
}
}
You should access the Intent in the onCreate() method.

val longitude = intent.getDoubleExtra("LONG_DATA",0.0)
val latitude = intent.getDoubleExtra("LAT_DATA",0.0)

Map markers are not showing on Google Maps when android app is deployed to playstore

I am having a strange issue where I have an android app that uses google map to display markers of places on google map. The locations come from an API via my websites then the application plot the points on the map. This works perfectly when run from android to studio to virtual and physical devices but the app is deployed to play store. I am not sure why. The image below show it on physical device and virtual device.
Image with a virtual device with markers showing on map
Code for google maps activity
package kryptic.kode.diseaseprediction.ui
import android.Manifest
import android.content.pm.PackageManager
import android.os.Build
import android.os.Bundle
import android.os.Looper
import android.util.Log
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import androidx.core.content.ContextCompat
import com.google.android.gms.ads.AdListener
import com.google.android.gms.ads.AdRequest
import com.google.android.gms.ads.InterstitialAd
import com.google.android.gms.ads.MobileAds
import com.google.android.gms.location.FusedLocationProviderClient
import com.google.android.gms.location.LocationServices
import com.google.android.gms.maps.GoogleMap
import com.google.android.gms.maps.OnMapReadyCallback
import com.google.android.gms.maps.SupportMapFragment
import kryptic.kode.diseaseprediction.R
import kryptic.kode.diseaseprediction.databinding.ActivityMapsBinding
import kryptic.kode.diseaseprediction.maps.LocationHelper
class MapsActivity : AppCompatActivity(), OnMapReadyCallback {
//binding
private lateinit var binding: ActivityMapsBinding
lateinit var mGoogleMap: GoogleMap
lateinit var locationHelper: LocationHelper
var mapFrag: SupportMapFragment? = null
var mFusedLocationClient: FusedLocationProviderClient? = null
private lateinit var mInterstitialAd: InterstitialAd
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
//setContentView(R.layout.activity_maps)
binding = ActivityMapsBinding.inflate(layoutInflater)
setContentView(binding.root)
MobileAds.initialize(this)
/*load Ads */
mInterstitialAd = InterstitialAd(this)
mInterstitialAd.adUnitId = getString(R.string.interstitial_ads)
mInterstitialAd.adListener = object : AdListener() {
override fun onAdClosed() {
mInterstitialAd.loadAd(AdRequest.Builder().build())
}
}
mInterstitialAd.loadAd(AdRequest.Builder().build())
if (mInterstitialAd.isLoaded) {
mInterstitialAd.show()
} else {
Log.d("TAG", "The interstitial wasn't loaded yet.")
}
/*end Load ads*/
supportActionBar?.title = "Doctors Near By"
mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this)
mapFrag = supportFragmentManager.findFragmentById(R.id.map) as SupportMapFragment?
mapFrag?.getMapAsync(this)
}
public override fun onPause() {
super.onPause()
//stop location updates when Activity is no longer active
mFusedLocationClient?.removeLocationUpdates(locationHelper.mLocationCallback)
}
override fun onMapReady(googleMap: GoogleMap) {
//ads
mInterstitialAd.loadAd(AdRequest.Builder().build())
if (mInterstitialAd.isLoaded) {
mInterstitialAd.show()
} else {
Log.d("TAG", "The interstitial wasn't loaded yet.")
}
mGoogleMap = googleMap
mGoogleMap.mapType = GoogleMap.MAP_TYPE_NORMAL
this.locationHelper = LocationHelper(this, mGoogleMap,getString(R.string.google_place_key))
//Check the build version to enable certain features
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
//Location Permission already granted
mFusedLocationClient?.requestLocationUpdates(
locationHelper.mLocationRequest,
locationHelper.mLocationCallback,
Looper.myLooper()
)
mGoogleMap.isMyLocationEnabled = true
} else {
//Request Location Permission
//checkLocationPermission()
locationHelper.checkLocationPermission()
}
} else {
mFusedLocationClient?.requestLocationUpdates(
locationHelper.mLocationRequest,
locationHelper.mLocationCallback,
Looper.myLooper()
)
mGoogleMap.isMyLocationEnabled = true
}
}
override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
when (requestCode) {
MY_PERMISSIONS_REQUEST_LOCATION -> {
// If request is cancelled, the result arrays are empty.
if (grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay! Do the
// location-related task you need to do.
if (ContextCompat.checkSelfPermission(
this,
Manifest.permission.ACCESS_FINE_LOCATION
) == PackageManager.PERMISSION_GRANTED
) {
mFusedLocationClient?.requestLocationUpdates(
locationHelper.mLocationRequest,
locationHelper.mLocationCallback,
Looper.myLooper()
)
mGoogleMap.setMyLocationEnabled(true)
}
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
Toast.makeText(this, "permission denied", Toast.LENGTH_LONG).show()
}
return
}
}// other 'case' lines to check for other
// permissions this app might request
}
companion object {
val MY_PERMISSIONS_REQUEST_LOCATION = 99
}
}
Any ideas why this is happening ?

Get List of postal codes from visible region in google map android

I hope you are doing good in your field.
Need some help for getting list of postal codes from the user visible area of google map for that i got the visible region. reference link for getting visible region
Now i am trying to get the address using Geocoder and visible region value but i get the exception.
Here i will show my code.[ Worked in Kotlin]
MainActivity.kt
import android.Manifest
import android.annotation.SuppressLint
import android.content.pm.PackageManager
import android.location.Geocoder
import android.os.Bundle
import android.support.v4.app.ActivityCompat
import android.support.v4.content.ContextCompat
import android.support.v7.app.AppCompatActivity
import com.google.android.gms.maps.CameraUpdateFactory
import com.google.android.gms.maps.GoogleMap
import com.google.android.gms.maps.OnMapReadyCallback
import com.google.android.gms.maps.SupportMapFragment
import com.google.android.gms.maps.model.LatLng
class MapActivity : AppCompatActivity(), OnMapReadyCallback {
var map: SupportMapFragment? = null
var googleMap: GoogleMap? = null
var MY_LOCATION_REQUEST_CODE: Int = 201
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_map)
}
override fun onResume() {
super.onResume()
if (map == null) {
map = supportFragmentManager.findFragmentById(R.id.map) as SupportMapFragment?
map!!.getMapAsync(this)
}
}
override fun onMapReady(googleMap: GoogleMap?) {
this.googleMap = googleMap
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
googleMap!!.isMyLocationEnabled = true
this.googleMap!!.animateCamera(CameraUpdateFactory.newLatLngZoom(LatLng(37.422, -122.084), 14.0f))
getAddressListfromVisibleRegion()
} else {
ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.ACCESS_FINE_LOCATION), MY_LOCATION_REQUEST_CODE)
}
}
private fun getAddressListfromVisibleRegion() {
var vregion = googleMap!!.projection.visibleRegion.latLngBounds
var addressList = Geocoder(this).getFromLocationName("", 100,
vregion.southwest.latitude, vregion.southwest.longitude,
vregion.northeast.latitude, vregion.northeast.longitude)
/*
val ne = vregion.northeast // LatLng of the north-east corner
val sw = vregion.southwest // LatLng of the south-west corner
val nw = LatLng(ne.latitude, sw.longitude)
val se = LatLng(sw.latitude, ne.longitude)
var addressList1 = Geocoder(this).getFromLocationName("", 100,
nw.latitude, nw.longitude, se.latitude, se.longitude)
*/
}
#SuppressLint("MissingPermission")
override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
if (requestCode == MY_LOCATION_REQUEST_CODE) {
if (permissions.size == 1 &&
permissions[0] == Manifest.permission.ACCESS_FINE_LOCATION &&
grantResults[0] == PackageManager.PERMISSION_GRANTED) {
googleMap!!.isMyLocationEnabled = true
this.googleMap!!.animateCamera(CameraUpdateFactory.newLatLngZoom(LatLng(37.422, -122.084), 14.0f))
}
}
}
}
Got the exception when implement Geocoder
I was refered this link for above issue and also checked with real device but still face same issue when execute Geocoder statement.
Anyone want to share knowledge with me that will be good help for me
Thanks in advance.