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Handle null exception; Location Services disable/enable situations
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muindi.stephen committed Oct 28, 2024
1 parent 70603e1 commit 499f2e9
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Showing 2 changed files with 54 additions and 17 deletions.
2 changes: 1 addition & 1 deletion .idea/misc.xml
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69 changes: 53 additions & 16 deletions .../main/java/com/steve_md/smartmkulima/ui/fragments/main/LocateAgriTechCompaniesFragment.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -2,9 +2,13 @@ package com.steve_md.smartmkulima.ui.fragments.main

import android.Manifest.permission.ACCESS_COARSE_LOCATION
import android.Manifest.permission.ACCESS_FINE_LOCATION
import android.content.Context
import android.content.Intent
import android.content.pm.PackageManager
import android.location.Location
import android.location.LocationManager
import android.os.Bundle
import android.provider.Settings
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
Expand All @@ -24,7 +28,6 @@ import com.google.android.gms.maps.CameraUpdateFactory
import com.google.android.gms.maps.GoogleMap
import com.google.android.gms.maps.MapView
import com.google.android.gms.maps.OnMapReadyCallback
import com.google.android.gms.maps.SupportMapFragment
import com.google.android.gms.maps.model.BitmapDescriptorFactory
import com.google.android.gms.maps.model.LatLng
import com.google.android.gms.maps.model.LatLngBounds
Expand Down Expand Up @@ -100,7 +103,6 @@ class LocateAgriTechCompaniesFragment : Fragment() , OnMapReadyCallback {
findNavController().navigateUp()
}


// Inflate Data To Recycler View
val recyclerView = view?.findViewById<RecyclerView>(R.id.agrodealersListRecView)
recyclerView!!.layoutManager = LinearLayoutManager(requireContext())
Expand Down Expand Up @@ -171,6 +173,12 @@ class LocateAgriTechCompaniesFragment : Fragment() , OnMapReadyCallback {
}

private fun getMyCurrentLocation() {

if (!isLocationEnabled()) {
promptEnableLocationServices()
return
}

if (ActivityCompat.checkSelfPermission(
requireContext(),
ACCESS_FINE_LOCATION
Expand All @@ -179,17 +187,26 @@ class LocateAgriTechCompaniesFragment : Fragment() , OnMapReadyCallback {
ACCESS_COARSE_LOCATION
) != PackageManager.PERMISSION_GRANTED
) {
promptUserForLocationPermissions()
requestLocationPermission()
return
}

locationProvider = LocationProvider(this.requireContext())
locationProvider.getLastKnownLocation { location ->
val userLatLng = location?.let { LatLng(it.latitude, location.longitude) }
val agrodealers = getAgroDealersData().filter { agrovet ->
val agrovetLatLng = LatLng(agrovet.latitude, agrovet.longitude)
userLatLng?.let { calculateDistance(it, agrovetLatLng) }!! <= SEARCH_RADIUS_METERS
}

if (location == null) {
displaySnackBar("Unable to get current location. Please check your settings")
return@getLastKnownLocation
} else {
Timber.tag("LocateNearAgroDealersFragment").e("Location services are enabled." +
" Showing nearby agro-dealers to the user.")
}

val userLatLng = LatLng(location.latitude, location.longitude)
val agrodealers = getAgroDealersData().filter { agrovet ->
val agrovetLatLng = LatLng(agrovet.latitude, agrovet.longitude)
calculateDistance(userLatLng, agrovetLatLng) <= SEARCH_RADIUS_METERS
}

// Add filtered Agro-Dealers Markers to the map
for (agrodealer in agrodealers) {
Expand All @@ -202,18 +219,18 @@ class LocateAgriTechCompaniesFragment : Fragment() , OnMapReadyCallback {

}

userLatLng?.let { CameraUpdateFactory.newLatLngZoom(it, 18f) }
?.let { googleMap.moveCamera(it)
googleMap.animateCamera(it)}
userLatLng.let { CameraUpdateFactory.newLatLngZoom(it, 18f) }
.let { googleMap.moveCamera(it)
googleMap.animateCamera(it)}

if (agrodealers.isNotEmpty()) {

val boundsBuilder = LatLngBounds.Builder()

val userLatLng1 = location?.let { LatLng(it.latitude, location.longitude) }
val userLatLng1 = LatLng(location.latitude, location.longitude)
val agrodealers1 = getAgroDealersData().filter { agrovet ->
val agrovetLatLng = LatLng(agrovet.latitude, agrovet.longitude)
userLatLng1?.let { calculateDistance(it, agrovetLatLng) }!! <= SEARCH_RADIUS_METERS
calculateDistance(userLatLng1, agrovetLatLng) <= SEARCH_RADIUS_METERS
}

// googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(userLatLng, 18f))
Expand All @@ -231,11 +248,11 @@ class LocateAgriTechCompaniesFragment : Fragment() , OnMapReadyCallback {
}


userLatLng1?.let { CameraUpdateFactory.newLatLngZoom(it, 18f) }
?.let { googleMap.moveCamera(it) }
userLatLng1.let { CameraUpdateFactory.newLatLngZoom(it, 18f) }
.let { googleMap.moveCamera(it) }

// include user's location in bounds
userLatLng?.let { boundsBuilder.include(it) }
userLatLng.let { boundsBuilder.include(it) }

/**
* Adjust the map's camera zoom level after calculating the bounds that
Expand Down Expand Up @@ -280,6 +297,26 @@ class LocateAgriTechCompaniesFragment : Fragment() , OnMapReadyCallback {
)
}

// Prompt user to enable location if it’s turned off
private fun promptEnableLocationServices() {
AlertDialog.Builder(requireContext())
.setTitle("Enable Location Services")
.setMessage("Location services are required to find nearby agro-dealers. Please enable them.")
.setPositiveButton("Settings") { _, _ ->
startActivity(Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS))
}
.setNegativeButton("Cancel", null)
.show()
}


// Check if location services are enabled
private fun isLocationEnabled(): Boolean {
val locationManager = requireContext().getSystemService(Context.LOCATION_SERVICE) as LocationManager
return locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) ||
locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)
}

// Registering Verified AgroDealers within this platform
// Gathered & Collected Agro-Dealers data to display Available AgroDealers
// filter agrodealers based on proximity to the user's exact location and nearby agrodealers
Expand Down

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