Add plural to notification

mobile/src/main/java/be/mygod/vpnhotspot/HotspotService.kt

@@ -153,17 +153,21 @@ class HotspotService : Service(), WifiP2pManager.ChannelListener {
         status = Status.ACTIVE
         showNotification(group)
     }
-    private fun showNotification(group: WifiP2pGroup? = null) = startForeground(1,
+    private fun showNotification(group: WifiP2pGroup? = null) {
+        val deviceCount = group?.clientList?.size ?: 0
+        startForeground(1,
                 NotificationCompat.Builder(this@HotspotService, CHANNEL)
                         .setWhen(0)
                         .setColor(ContextCompat.getColor(this@HotspotService, R.color.colorPrimary))
                         .setContentTitle(group?.networkName)
                         .setContentText(group?.passphrase)
-                .setSubText("${group?.clientList?.size ?: 0} connected device(s)")
+                        .setSubText(resources.getQuantityString(R.plurals.notification_connected_devices,
+                                deviceCount, deviceCount))
                         .setSmallIcon(R.drawable.ic_device_wifi_tethering)
                         .setContentIntent(PendingIntent.getActivity(this, 0,
                                 Intent(this, MainActivity::class.java), PendingIntent.FLAG_UPDATE_CURRENT))
                         .build())
+    }
 
     private fun onGroupCreated(info: WifiP2pInfo, group: WifiP2pGroup) {
         val owner = info.groupOwnerAddress

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

@@ -1,4 +1,8 @@
 <resources>
     <string name="app_name">VPN Hotspot</string>
     <string name="title_activity_settings">Settings</string>
+    <plurals name="notification_connected_devices">
+        <item quantity="one">1 connected device</item>
+        <item quantity="other">%d connected devices</item>
+    </plurals>
 </resources>