Add location permission request in the Merchants and Tellers screen, and if accepted show the icon on the map so that it can be moved to the current user's location if it is available already. Also, show the zoom UI controls on the map.

app/src/main/java/cy/agorise/bitsybitshareswallet/fragments/MerchantsFragment.kt

@@ -1,5 +1,8 @@
 package cy.agorise.bitsybitshareswallet.fragments
 
+import android.Manifest
+import android.annotation.SuppressLint
+import android.content.pm.PackageManager
 import android.os.Bundle
 import android.util.Log
 import androidx.fragment.app.Fragment
@@ -25,13 +28,22 @@ import java.io.IOException
 import android.graphics.Bitmap
 import android.graphics.Canvas
 import android.graphics.drawable.Drawable
+import androidx.core.content.ContextCompat
 import com.google.android.gms.maps.model.BitmapDescriptor
 import cy.agorise.bitsybitshareswallet.database.entities.Merchant
 import cy.agorise.bitsybitshareswallet.utils.Constants
+import cy.agorise.bitsybitshareswallet.utils.toast
 
 
 class MerchantsFragment : Fragment(), OnMapReadyCallback, retrofit2.Callback<FeathersResponse<Merchant>> {
 
+    companion object {
+        private const val TAG = "MerchantsFragment"
+
+        // Camera Permission
+        private const val REQUEST_LOCATION_PERMISSION = 1
+    }
+
     private lateinit var mMap: GoogleMap
 
     private var merchants: List<Merchant>? = null
@@ -55,6 +67,32 @@ class MerchantsFragment : Fragment(), OnMapReadyCallback, retrofit2.Callback<Fea
         merchantIcon = getMarkerIconFromDrawable(resources.getDrawable(R.drawable.ic_pin_merchants, null))
     }
 
+    private fun verifyLocationPermission() {
+        if (ContextCompat.checkSelfPermission(activity!!, Manifest.permission.ACCESS_FINE_LOCATION)
+            != PackageManager.PERMISSION_GRANTED) {
+            // Permission is not already granted
+            requestPermissions(arrayOf(android.Manifest.permission.ACCESS_FINE_LOCATION), REQUEST_LOCATION_PERMISSION)
+        } else {
+            // Permission is already granted
+            mMap.isMyLocationEnabled = true
+        }
+    }
+
+    /** Handles the result from the location permission request */
+    @SuppressLint("MissingPermission")
+    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
+
+        if (requestCode == REQUEST_LOCATION_PERMISSION) {
+            if ((grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED)) {
+                mMap.isMyLocationEnabled = true
+            } else {
+                context?.toast(getString(R.string.msg__location_permission_necessary))
+            }
+            return
+        }
+    }
+
     /**
      * Manipulates the map once available.
      * This callback is triggered when the map is ready to be used.
@@ -67,6 +105,8 @@ class MerchantsFragment : Fragment(), OnMapReadyCallback, retrofit2.Callback<Fea
     override fun onMapReady(googleMap: GoogleMap) {
         mMap = googleMap
 
+        verifyLocationPermission()
+
         val gson = GsonBuilder()
             .setLenient()
             .create()

app/src/main/res/layout/fragment_merchants.xml

@@ -1,8 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
-<fragment xmlns:android="http://schemas.android.com/apk/res/android"
+<fragment
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:map="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
+    android:name="com.google.android.gms.maps.SupportMapFragment"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:id="@+id/map"
-          tools:context=".fragments.MerchantsFragment"
+    map:uiZoomControls="true"
-          android:name="com.google.android.gms.maps.SupportMapFragment"/>
+    map:uiCompass="true"
+    tools:context=".fragments.MerchantsFragment"/>

app/src/main/res/values-es/strings.xml

@@ -58,6 +58,9 @@
     <string name="text__ignore_network_fees">Ignorar cuotas de red</string>
     <string name="button__filter">Filtrar</string>
 
+    <!-- Merchants & Tellers -->
+    <string name="msg__location_permission_necessary">El permiso de localización es necesario para mostrar tu ubicación actual en el mapa.</string>
+
     <!-- Send Transaction -->
     <string name="title_info">Info</string>
     <string name="text__to">A</string>

app/src/main/res/values/strings.xml

@@ -58,6 +58,9 @@
     <string name="text__ignore_network_fees">Ignore Network fees</string>
     <string name="button__filter">Filter</string>
 
+    <!-- Merchants & Tellers -->
+    <string name="msg__location_permission_necessary">Location permission is necessary to show your current location on the map.</string>
+
     <!-- Send Transaction -->
     <string name="title_info">Info</string>
     <string name="text__to">To</string>