Telegram - introduced live location sharing with chats

OsmAnd-telegram/build.gradle

@@ -113,6 +113,7 @@ afterEvaluate {
 }
 
 dependencies {
+    implementation project(path: ':OsmAnd-java', configuration: 'android')
     implementation fileTree(dir: 'libs', include: ['*.jar'])
 
     implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
@@ -121,6 +122,7 @@ dependencies {
     implementation 'com.android.support:support-annotations:27.1.1'
     implementation 'commons-logging:commons-logging-api:1.1'
     implementation 'com.android.support:recyclerview-v7:27.1.1'
+    implementation 'com.vividsolutions:jts-core:1.14.0'
 
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'

OsmAnd-telegram/src/main/AndroidManifest.xml

@@ -2,6 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="net.osmand.telegram">
 
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
@@ -19,6 +20,7 @@
 
         <activity
             android:name=".MainActivity"
+            android:launchMode="singleTask"
             android:configChanges="orientation|screenSize"
             android:windowSoftInputMode="adjustResize">
 
@@ -30,6 +32,16 @@
 
         </activity>
 
+        <service
+            android:label="@string/process_location_service"
+            android:name="net.osmand.telegram.LocationService"
+            android:stopWithTask="true">
+            <intent-filter>
+                <action android:name="net.osmand.telegram.LocationService" />
+            </intent-filter>
+        </service>
+
+        <receiver android:name=".notifications.NotificationDismissReceiver" />
     </application>
 
 </manifest>

OsmAnd-telegram/src/main/java/net/osmand/PlatformUtil.java

@@ -1,4 +1,4 @@
-package net.osmand.telegram.utils;
+package net.osmand;
 
 import org.apache.commons.logging.Log;
 

OsmAnd-telegram/src/main/java/net/osmand/telegram/LocationService.kt

@@ -0,0 +1,143 @@
+package net.osmand.telegram
+
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.location.Location
+import android.location.LocationListener
+import android.location.LocationManager
+import android.os.Binder
+import android.os.Bundle
+import android.os.Handler
+import android.os.IBinder
+import android.util.Log
+import android.widget.Toast
+import net.osmand.telegram.notifications.TelegramNotification
+import net.osmand.PlatformUtil
+
+class LocationService : Service(), LocationListener {
+
+    private val binder = LocationServiceBinder()
+
+    var handler: Handler? = null
+
+    class LocationServiceBinder : Binder()
+
+    override fun onBind(intent: Intent): IBinder? {
+        return binder
+    }
+
+    fun stopIfNeeded(ctx: Context) {
+        val serviceIntent = Intent(ctx, LocationService::class.java)
+        ctx.stopService(serviceIntent)
+    }
+
+    override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
+        handler = Handler()
+        val app = app()
+
+        app.locationService = this
+
+        // requesting
+        // request location updates
+        val locationManager = getSystemService(Context.LOCATION_SERVICE) as LocationManager
+        try {
+            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0f, this@LocationService)
+        } catch (e: SecurityException) {
+            Toast.makeText(this, R.string.no_location_permission, Toast.LENGTH_LONG).show()
+            Log.d(PlatformUtil.TAG, "Location service permission not granted")
+        } catch (e: IllegalArgumentException) {
+            Toast.makeText(this, R.string.gps_not_available, Toast.LENGTH_LONG).show()
+            Log.d(PlatformUtil.TAG, "GPS location provider not available")
+        }
+
+        // registering icon at top level
+        // Leave icon visible even for navigation for proper display
+        val notification = app.notificationHelper.buildTopNotification()
+        if (notification != null) {
+            startForeground(TelegramNotification.TOP_NOTIFICATION_SERVICE_ID, notification)
+            app.notificationHelper.refreshNotification(TelegramNotification.NotificationType.SHARE_LOCATION)
+            //app.notificationHelper.refreshNotifications()
+        }
+        return Service.START_REDELIVER_INTENT
+    }
+
+    private fun app() = application as TelegramApplication
+
+    override fun onDestroy() {
+        super.onDestroy()
+        val app = app()
+        app.locationService = null
+
+        // remove updates
+        val locationManager = getSystemService(Context.LOCATION_SERVICE) as LocationManager
+        try {
+            locationManager.removeUpdates(this)
+        } catch (e: SecurityException) {
+            Log.d(PlatformUtil.TAG, "Location service permission not granted")
+        }
+
+        // remove notification
+        stopForeground(java.lang.Boolean.TRUE)
+        app.notificationHelper.updateTopNotification()
+
+        app.runInUIThread({
+            app.notificationHelper.refreshNotification(TelegramNotification.NotificationType.SHARE_LOCATION)
+            //app.notificationHelper.refreshNotifications()
+        }, 500)
+    }
+
+    override fun onLocationChanged(l: Location?) {
+        if (l != null) {
+            val location = convertLocation(l)
+            app().shareLocationHelper.updateLocation(location)
+        }
+    }
+
+    override fun onProviderDisabled(provider: String) {
+        Toast.makeText(this, getString(R.string.location_service_no_gps_available), Toast.LENGTH_LONG).show()
+    }
+
+
+    override fun onProviderEnabled(provider: String) {}
+
+
+    override fun onStatusChanged(provider: String, status: Int, extras: Bundle) {}
+
+    override fun onTaskRemoved(rootIntent: Intent) {
+        val app = app()
+        app.notificationHelper.removeNotifications()
+        if (app.locationService != null) {
+            this@LocationService.stopSelf()
+        }
+    }
+
+    companion object {
+
+        fun convertLocation(l: Location?): net.osmand.Location? {
+            if (l == null) {
+                return null
+            }
+            val r = net.osmand.Location(l.provider)
+            r.latitude = l.latitude
+            r.longitude = l.longitude
+            r.time = l.time
+            if (l.hasAccuracy()) {
+                r.accuracy = l.accuracy
+            }
+            if (l.hasSpeed()) {
+                r.speed = l.speed
+            }
+            if (l.hasAltitude()) {
+                r.altitude = l.altitude
+            }
+            if (l.hasBearing()) {
+                r.bearing = l.bearing
+            }
+            if (l.hasAltitude()) {
+                r.altitude = l.altitude
+            }
+            return r
+        }
+    }
+}

OsmAnd-telegram/src/main/java/net/osmand/telegram/LoginDialogFragment.kt

@@ -12,7 +12,7 @@ import android.view.inputmethod.EditorInfo
 import android.widget.Button
 import android.widget.EditText
 import net.osmand.telegram.utils.AndroidUtils
-import net.osmand.telegram.utils.PlatformUtil
+import net.osmand.PlatformUtil
 
 
 class LoginDialogFragment : DialogFragment() {

OsmAnd-telegram/src/main/java/net/osmand/telegram/MainActivity.kt

@@ -1,23 +1,33 @@
 package net.osmand.telegram
 
+import android.Manifest
+import android.content.pm.PackageManager
 import android.os.Bundle
+import android.support.v4.app.ActivityCompat
 import android.support.v7.app.AppCompatActivity
 import android.support.v7.widget.*
 import android.view.*
 import android.widget.Toast
+import net.osmand.PlatformUtil
 import net.osmand.telegram.LoginDialogFragment.LoginDialogType
-import net.osmand.telegram.TelegramHelper.*
+import net.osmand.telegram.helpers.TelegramHelper
+import net.osmand.telegram.helpers.TelegramHelper.*
+import net.osmand.telegram.utils.AndroidUtils
 import org.drinkless.td.libcore.telegram.TdApi
 
 
 class MainActivity : AppCompatActivity(), TelegramListener {
 
     companion object {
+        private const val PERMISSION_REQUEST_LOCATION = 1
+
         private const val LOGIN_MENU_ID = 0
         private const val LOGOUT_MENU_ID = 1
         private const val PROGRESS_MENU_ID = 2
     }
 
+    private val log = PlatformUtil.getLog(TelegramHelper::class.java)
+
     private var telegramAuthorizationRequestHandler: TelegramAuthorizationRequestHandler? = null
     private var paused: Boolean = false
 
@@ -28,8 +38,8 @@ class MainActivity : AppCompatActivity(), TelegramListener {
     private val app: TelegramApplication
         get() = application as TelegramApplication
 
-    private val telegramHelper: TelegramHelper
+    private val telegramHelper get() = app.telegramHelper
-        get() = app.telegramHelper
+    private val settings get() = app.settings
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -74,6 +84,10 @@ class MainActivity : AppCompatActivity(), TelegramListener {
 
         invalidateOptionsMenu()
         updateTitle()
+
+        if (settings.hasAnyChatToShareLocation() && AndroidUtils.isLocationPermissionAvailable(this)) {
+            requestLocationPermission()
+        }
     }
 
     override fun onPause() {
@@ -81,6 +95,16 @@ class MainActivity : AppCompatActivity(), TelegramListener {
         paused = true
     }
 
+    override fun onStop() {
+        super.onStop()
+        settings.save()
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        telegramHelper.close()
+    }
+
     override fun onTelegramStatusChanged(prevTelegramAuthorizationState: TelegramAuthorizationState,
                                          newTelegramAuthorizationState: TelegramAuthorizationState) {
         runOnUi {
@@ -120,6 +144,10 @@ class MainActivity : AppCompatActivity(), TelegramListener {
         }
     }
 
+    override fun onSendLiveLicationError(code: Int, message: String) {
+        log.error("Send live location error: $code - $message")
+    }
+
     private fun updateChatsList() {
         val chatList = telegramHelper.getChatList()
         val chats: MutableList<TdApi.Chat> = mutableListOf()
@@ -237,9 +265,23 @@ class MainActivity : AppCompatActivity(), TelegramListener {
         }
     }
 
-    override fun onDestroy() {
+    private fun requestLocationPermission() {
-        super.onDestroy()
+        if (!AndroidUtils.isLocationPermissionAvailable(this)) {
-        telegramHelper.close()
+            ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.ACCESS_FINE_LOCATION), PERMISSION_REQUEST_LOCATION)
+        }
+    }
+
+    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
+        if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+            when (requestCode) {
+                PERMISSION_REQUEST_LOCATION -> {
+                    if (settings.hasAnyChatToShareLocation()) {
+                        app.shareLocationHelper.startSharingLocation()
+                    }
+                }
+            }
+        }
     }
 
     inner class ChatsAdapter :
@@ -258,16 +300,28 @@ class MainActivity : AppCompatActivity(), TelegramListener {
             val showOnMapSwitch: SwitchCompat? = view.findViewById(R.id.show_on_map_switch)
         }
 
-        override fun onCreateViewHolder(parent: ViewGroup,
+        override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ChatsAdapter.ViewHolder {
-                                        viewType: Int): ChatsAdapter.ViewHolder {
+            val view = LayoutInflater.from(parent.context).inflate(R.layout.chat_list_item, parent, false)
-            val view = LayoutInflater.from(parent.context)
-                    .inflate(R.layout.chat_list_item, parent, false)
-
             return ViewHolder(view)
         }
 
         override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+            val chatId = chats[position].id
             holder.groupName?.text = chats[position].title
+            holder.shareLocationSwitch?.setOnCheckedChangeListener(null)
+            holder.shareLocationSwitch?.isChecked = settings.isSharingLocationToChat(chatId)
+            holder.shareLocationSwitch?.setOnCheckedChangeListener { view, isChecked ->
+                settings.shareLocationToChat(chatId, isChecked)
+                if (settings.hasAnyChatToShareLocation()) {
+                    if (!AndroidUtils.isLocationPermissionAvailable(view.context)) {
+                        requestLocationPermission()
+                    } else {
+                        app.shareLocationHelper.startSharingLocation()
+                    }
+                } else {
+                    app.shareLocationHelper.stopSharingLocation()
+                }
+            }
         }
 
         override fun getItemCount() = chats.size

OsmAnd-telegram/src/main/java/net/osmand/telegram/TelegramApplication.kt

@@ -2,12 +2,26 @@ package net.osmand.telegram
 
 import android.app.Application
 import android.content.Context
+import android.content.Intent
 import android.net.ConnectivityManager
 import android.net.NetworkInfo
+import android.os.Build
+import android.os.Handler
+import net.osmand.telegram.helpers.ShareLocationHelper
+import net.osmand.telegram.helpers.TelegramHelper
+import net.osmand.telegram.notifications.NotificationHelper
+import net.osmand.telegram.utils.AndroidUtils
 
 class TelegramApplication : Application() {
 
-    val telegramHelper: TelegramHelper = TelegramHelper.instance
+    val telegramHelper = TelegramHelper.instance
+    lateinit var settings: TelegramSettings private set
+    lateinit var shareLocationHelper: ShareLocationHelper private set
+    lateinit var notificationHelper: NotificationHelper private set
+
+    var locationService: LocationService? = null
+
+    private val uiHandler = Handler()
 
     private val lastTimeInternetConnectionChecked: Long = 0
     private var internetConnectionAvailable = true
@@ -15,6 +29,14 @@ class TelegramApplication : Application() {
     override fun onCreate() {
         super.onCreate()
         telegramHelper.appDir = filesDir.absolutePath
+
+        settings = TelegramSettings(this)
+        shareLocationHelper = ShareLocationHelper(this)
+        notificationHelper = NotificationHelper(this)
+
+        if (settings.hasAnyChatToShareLocation() && AndroidUtils.isLocationPermissionAvailable(this)) {
+            shareLocationHelper.startSharingLocation()
+        }
     }
 
     val isWifiConnected: Boolean
@@ -47,4 +69,32 @@ class TelegramApplication : Application() {
         }
         return internetConnectionAvailable
     }
+
+    fun startLocationService(restart: Boolean = false) {
+        val serviceIntent = Intent(this, LocationService::class.java)
+
+        val locationService = locationService
+        if (locationService != null && restart) {
+            locationService.stopSelf()
+        }
+        if (locationService == null || restart) {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                startForegroundService(serviceIntent)
+            } else {
+                startService(serviceIntent)
+            }
+        }
+    }
+
+    fun stopLocationService() {
+        locationService?.stopIfNeeded(this)
+    }
+
+    fun runInUIThread(action: (() -> Unit)) {
+        uiHandler.post(action)
+    }
+
+    fun runInUIThread(action: (() -> Unit), delay: Long) {
+        uiHandler.postDelayed(action, delay)
+    }
 }

OsmAnd-telegram/src/main/java/net/osmand/telegram/TelegramSettings.kt

@@ -0,0 +1,108 @@
+package net.osmand.telegram
+
+import android.content.Context
+import net.osmand.telegram.utils.OsmandFormatter.MetricsConstants
+import net.osmand.telegram.utils.OsmandFormatter.SpeedConstants
+
+class TelegramSettings(private val app: TelegramApplication) {
+
+    companion object {
+
+        private const val SETTINGS_NAME = "osmand_telegram_settings"
+
+        private const val SHARE_LOCATION_CHATS_KEY = "share_location_chats_key"
+        private const val SHOW_ON_MAP_CHATS_KEY = "show_on_map_chats_key"
+
+        private const val METRICS_CONSTANTS_KEY = "metrics_constants_key"
+        private const val SPEED_CONSTANTS_KEY = "speed_constants_key"
+
+        private const val SHOW_NOTIFICATION_ALWAYS_KEY = "show_notification_always_key"
+    }
+
+    private var shareLocationChats: Set<Long> = emptySet()
+    private var showOnMapChats: Set<Long> = emptySet()
+
+    var metricsConstants = MetricsConstants.KILOMETERS_AND_METERS
+    var speedConstants = SpeedConstants.KILOMETERS_PER_HOUR
+
+    var showNotificationAlways = true
+
+    init {
+        read()
+    }
+
+    fun hasAnyChatToShareLocation(): Boolean {
+        return shareLocationChats.isNotEmpty()
+    }
+
+    fun isSharingLocationToChat(chatId: Long): Boolean {
+        return shareLocationChats.contains(chatId)
+    }
+
+    fun shareLocationToChat(chatId: Long, share: Boolean) {
+        val shareLocationChats = shareLocationChats.toMutableList()
+        if (share) {
+            shareLocationChats.add(chatId)
+        } else {
+            shareLocationChats.remove(chatId)
+        }
+        this.shareLocationChats = shareLocationChats.toHashSet()
+    }
+
+    fun getShareLocationChats() = ArrayList(shareLocationChats)
+
+    fun save() {
+        val prefs = app.getSharedPreferences(SETTINGS_NAME, Context.MODE_PRIVATE)
+        val edit = prefs.edit()
+
+        val shareLocationChatsSet = mutableSetOf<String>()
+        val shareLocationChats = ArrayList(shareLocationChats)
+        for (chatId in shareLocationChats) {
+            shareLocationChatsSet.add(chatId.toString())
+        }
+        edit.putStringSet(SHARE_LOCATION_CHATS_KEY, shareLocationChatsSet)
+
+        val showOnMapChatsSet = mutableSetOf<String>()
+        val showOnMapChats = ArrayList(showOnMapChats)
+        for (chatId in showOnMapChats) {
+            showOnMapChatsSet.add(chatId.toString())
+        }
+        edit.putStringSet(SHOW_ON_MAP_CHATS_KEY, showOnMapChatsSet)
+
+        edit.putString(METRICS_CONSTANTS_KEY, metricsConstants.name)
+        edit.putString(SPEED_CONSTANTS_KEY, speedConstants.name)
+
+        edit.putBoolean(SHOW_NOTIFICATION_ALWAYS_KEY, showNotificationAlways)
+
+        edit.apply()
+    }
+
+    fun read() {
+        val prefs = app.getSharedPreferences(SETTINGS_NAME, Context.MODE_PRIVATE)
+
+        val shareLocationChats = mutableSetOf<Long>()
+        val shareLocationChatsSet = prefs.getStringSet(SHARE_LOCATION_CHATS_KEY, mutableSetOf())
+        for (chatIdStr in shareLocationChatsSet) {
+            val chatId = chatIdStr.toLongOrNull()
+            if (chatId != null) {
+                shareLocationChats.add(chatId)
+            }
+        }
+        this.shareLocationChats = shareLocationChats
+
+        val showOnMapChats = mutableSetOf<Long>()
+        val showOnMapChatsSet = prefs.getStringSet(SHOW_ON_MAP_CHATS_KEY, mutableSetOf())
+        for (chatIdStr in showOnMapChatsSet) {
+            val chatId = chatIdStr.toLongOrNull()
+            if (chatId != null) {
+                showOnMapChats.add(chatId)
+            }
+        }
+        this.showOnMapChats = showOnMapChats
+
+        metricsConstants = MetricsConstants.valueOf(prefs.getString(METRICS_CONSTANTS_KEY, MetricsConstants.KILOMETERS_AND_METERS.name))
+        speedConstants = SpeedConstants.valueOf(prefs.getString(SPEED_CONSTANTS_KEY, SpeedConstants.KILOMETERS_PER_HOUR.name))
+
+        showNotificationAlways = prefs.getBoolean(SHOW_NOTIFICATION_ALWAYS_KEY, true)
+    }
+}

OsmAnd-telegram/src/main/java/net/osmand/telegram/helpers/ShareLocationHelper.kt

@@ -0,0 +1,89 @@
+package net.osmand.telegram.helpers
+
+import net.osmand.Location
+import net.osmand.telegram.TelegramApplication
+import net.osmand.telegram.notifications.TelegramNotification.NotificationType
+
+class ShareLocationHelper(private val app: TelegramApplication) {
+
+    companion object {
+        const val MAX_LOCATION_MESSAGE_LIVE_PERIOD_SEC = 60 * 60 * 24 - 1 // day
+    }
+
+    var sharingLocation: Boolean = false
+        private set
+
+    var duration: Long = 0
+        private set
+
+    var distance: Int = 0
+        private set
+
+    var lastLocationMessageSentTime: Long = 0
+
+    private var lastTimeInMillis: Long = 0L
+
+    private var lastLocation: Location? = null
+        set(value) {
+            if (lastTimeInMillis == 0L) {
+                lastTimeInMillis = System.currentTimeMillis()
+            } else {
+                val currentTimeInMillis = System.currentTimeMillis()
+                duration += currentTimeInMillis - lastTimeInMillis
+                lastTimeInMillis = currentTimeInMillis
+            }
+            if (lastLocation != null && value != null) {
+                distance += value.distanceTo(lastLocation).toInt()
+            }
+            field = value
+        }
+
+    fun updateLocation(location: Location?) {
+        lastLocation = location
+
+        if (location != null) {
+            val shareLocationChats = app.settings.getShareLocationChats()
+            if (shareLocationChats.isNotEmpty()) {
+                app.telegramHelper.sendLiveLocation(shareLocationChats, MAX_LOCATION_MESSAGE_LIVE_PERIOD_SEC, location.latitude, location.longitude)
+            }
+            lastLocationMessageSentTime = System.currentTimeMillis()
+        }
+        refreshNotification()
+    }
+
+    fun startSharingLocation() {
+        sharingLocation = true
+
+        app.startLocationService()
+
+        refreshNotification()
+    }
+
+    fun stopSharingLocation() {
+        sharingLocation = false
+
+        app.stopLocationService()
+        lastLocation = null
+        lastTimeInMillis = 0L
+        distance = 0
+        duration = 0
+
+        refreshNotification()
+    }
+
+    fun pauseSharingLocation() {
+        sharingLocation = false
+
+        app.stopLocationService()
+        lastLocation = null
+        lastTimeInMillis = 0L
+
+        refreshNotification()
+    }
+
+    private fun refreshNotification() {
+        app.runInUIThread {
+            app.notificationHelper.refreshNotification(NotificationType.SHARE_LOCATION)
+        }
+    }
+}

OsmAnd-telegram/src/main/java/net/osmand/telegram/helpers/TelegramHelper.kt

@@ -1,9 +1,8 @@
-package net.osmand.telegram
+package net.osmand.telegram.helpers
 
 import android.text.TextUtils
-import net.osmand.telegram.TelegramHelper.TelegramAuthenticationParameterType.*
+import net.osmand.telegram.helpers.TelegramHelper.TelegramAuthenticationParameterType.*
-import net.osmand.telegram.utils.CancellableAsyncTask
+import net.osmand.PlatformUtil
-import net.osmand.telegram.utils.PlatformUtil
 import org.drinkless.td.libcore.telegram.Client
 import org.drinkless.td.libcore.telegram.Client.ResultHandler
 import org.drinkless.td.libcore.telegram.TdApi
@@ -104,6 +103,7 @@ class TelegramHelper private constructor() {
 
         fun onTelegramChatsRead()
         fun onTelegramError(code: Int, message: String)
+        fun onSendLiveLicationError(code: Int, message: String)
     }
 
     interface TelegramAuthorizationRequestListener {
@@ -205,6 +205,77 @@ class TelegramHelper private constructor() {
         listener?.onTelegramChatsRead()
     }
 
+    /**
+     * @chatId Id of the chat
+     * @livePeriod Period for which the location can be updated, in seconds; should be between 60 and 86400 for a live location and 0 otherwise.
+     * @latitude Latitude of the location
+     * @longitude Longitude of the location
+     */
+    fun sendLiveLocation(chatIds: List<Long>, livePeriod: Int = 61, latitude: Double, longitude: Double) {
+
+        val lp = livePeriod.coerceAtLeast(61)
+        val location = TdApi.Location(latitude, longitude)
+        val content = TdApi.InputMessageLocation(location, lp)
+
+        client?.send(TdApi.GetActiveLiveLocationMessages(), { obj ->
+            when (obj.constructor) {
+                TdApi.Error.CONSTRUCTOR -> {
+                    val error = obj as TdApi.Error
+                    listener?.onSendLiveLicationError(error.code, error.message)
+                }
+                TdApi.Messages.CONSTRUCTOR -> {
+                    val messages = (obj as TdApi.Messages).messages
+                    val processedChatIds = mutableListOf<Long>()
+                    if (messages.isNotEmpty()) {
+                        for (msg in messages) {
+                            if (chatIds.contains(msg.chatId)) {
+                                processedChatIds.add(msg.chatId)
+                                client?.send(TdApi.EditMessageLiveLocation(msg.chatId, msg.id, null, location), { o->
+                                    when (o.constructor) {
+                                        TdApi.Error.CONSTRUCTOR -> {
+                                            val error = o as TdApi.Error
+                                            listener?.onSendLiveLicationError(error.code, error.message)
+                                        }
+                                        else -> listener?.onSendLiveLicationError(-1, "Receive wrong response from TDLib: $o")
+                                    }
+                                })
+                            }
+                        }
+                    }
+                    if (chatIds.size != processedChatIds.size) {
+                        val mutableChatIds = chatIds.toMutableList()
+                        mutableChatIds.removeAll(processedChatIds)
+                        for (chatId in mutableChatIds) {
+                            client?.send(TdApi.SendMessage(chatId, 0, false, true, null, content), { o->
+                                when (o.constructor) {
+                                    TdApi.Error.CONSTRUCTOR -> {
+                                        val error = o as TdApi.Error
+                                        listener?.onSendLiveLicationError(error.code, error.message)
+                                    }
+                                    else -> listener?.onSendLiveLicationError(-1, "Receive wrong response from TDLib: $o")
+                                }
+                            })
+                        }
+                    }
+                }
+                else -> listener?.onSendLiveLicationError(-1, "Receive wrong response from TDLib: $obj")
+            }
+        })
+    }
+
+    /**
+     * @chatId Id of the chat
+     * @message Text of the message
+     */
+    fun sendText(chatId: Long, message: String) {
+        // initialize reply markup just for testing
+        //val row = arrayOf(TdApi.InlineKeyboardButton("https://telegram.org?1", TdApi.InlineKeyboardButtonTypeUrl()), TdApi.InlineKeyboardButton("https://telegram.org?2", TdApi.InlineKeyboardButtonTypeUrl()), TdApi.InlineKeyboardButton("https://telegram.org?3", TdApi.InlineKeyboardButtonTypeUrl()))
+        //val replyMarkup = TdApi.ReplyMarkupInlineKeyboard(arrayOf(row, row, row))
+
+        val content = TdApi.InputMessageText(TdApi.FormattedText(message, null), false, true)
+        client?.send(TdApi.SendMessage(chatId, 0, false, true, null, content), defaultHandler)
+    }
+
     fun logout(): Boolean {
         return if (libraryLoaded) {
             isHaveAuthorization = false
@@ -354,9 +425,7 @@ class TelegramHelper private constructor() {
                         chat.order = 0
                         setChatOrder(chat, order)
                     }
-                    CancellableAsyncTask.run("onTelegramChatsRead", 100, {
+                    listener?.onTelegramChatsRead()
-                        listener?.onTelegramChatsRead()
-                    })
                 }
                 TdApi.UpdateChatTitle.CONSTRUCTOR -> {
                     val updateChat = obj as TdApi.UpdateChatTitle
@@ -424,6 +493,11 @@ class TelegramHelper private constructor() {
                         chat.unreadMentionCount = updateChat.unreadMentionCount
                     }
                 }
+
+                TdApi.UpdateMessageSendSucceeded.CONSTRUCTOR -> {
+                    val updateMessageSent = obj as TdApi.UpdateMessageSendSucceeded
+                }
+
                 TdApi.UpdateChatReplyMarkup.CONSTRUCTOR -> {
                     val updateChat = obj as TdApi.UpdateChatReplyMarkup
                     val chat = chats[updateChat.chatId]

OsmAnd-telegram/src/main/java/net/osmand/telegram/notifications/NotificationDismissReceiver.kt

@@ -0,0 +1,39 @@
+package net.osmand.telegram.notifications
+
+import android.app.PendingIntent
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.text.TextUtils
+
+import net.osmand.telegram.TelegramApplication
+import net.osmand.telegram.notifications.TelegramNotification.NotificationType
+
+class NotificationDismissReceiver : BroadcastReceiver() {
+
+    override fun onReceive(context: Context, intent: Intent) {
+        val helper = (context.applicationContext as TelegramApplication).notificationHelper
+        val notificationTypeStr = intent.extras!!.getString(NOTIFICATION_TYPE_KEY_NAME)
+        if (!TextUtils.isEmpty(notificationTypeStr)) {
+            try {
+                val notificationType = NotificationType.valueOf(notificationTypeStr)
+                helper.onNotificationDismissed(notificationType)
+            } catch (e: Exception) {
+                //ignored
+            }
+
+        }
+    }
+
+    companion object {
+
+        const val NOTIFICATION_TYPE_KEY_NAME = "net.osmand.telegram.notifications.NotificationType"
+
+        fun createIntent(context: Context, notificationType: NotificationType): PendingIntent {
+            val intent = Intent(context, NotificationDismissReceiver::class.java)
+            intent.putExtra(NOTIFICATION_TYPE_KEY_NAME, notificationType.name)
+            return PendingIntent.getBroadcast(context.applicationContext,
+                    0, intent, PendingIntent.FLAG_UPDATE_CURRENT)
+        }
+    }
+}

OsmAnd-telegram/src/main/java/net/osmand/telegram/notifications/NotificationHelper.kt

@@ -0,0 +1,140 @@
+package net.osmand.telegram.notifications
+
+import android.annotation.TargetApi
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.content.Context
+import android.support.v4.app.NotificationManagerCompat
+import net.osmand.telegram.R
+import net.osmand.telegram.TelegramApplication
+import net.osmand.telegram.notifications.TelegramNotification.NotificationType
+import java.util.*
+
+class NotificationHelper(private val app: TelegramApplication) {
+
+    private var shareLocationNotification: ShareLocationNotification? = null
+    private val all = ArrayList<TelegramNotification>()
+
+    init {
+        init()
+    }
+
+    private fun init() {
+        val shareLocationNotification = ShareLocationNotification(app)
+        this.shareLocationNotification = shareLocationNotification
+        all.add(shareLocationNotification)
+    }
+
+    fun buildTopNotification(): Notification? {
+        val notification = acquireTopNotification()
+        if (notification != null) {
+            removeNotification(notification.type)
+            setTopNotification(notification)
+            val notificationBuilder = notification.buildNotification(false)
+            return notificationBuilder?.build()
+        }
+        return null
+    }
+
+    private fun acquireTopNotification(): TelegramNotification? {
+        var notification: TelegramNotification? = null
+        if (shareLocationNotification!!.isEnabled && shareLocationNotification!!.isActive) {
+            notification = shareLocationNotification
+        }
+        return notification
+    }
+
+    fun updateTopNotification() {
+        val notification = acquireTopNotification()
+        setTopNotification(notification)
+    }
+
+    private fun setTopNotification(notification: TelegramNotification?) {
+        for (n in all) {
+            n.isTop = n === notification
+        }
+    }
+
+    fun showNotifications() {
+        if (!hasAnyTopNotification()) {
+            removeTopNotification()
+        }
+        for (notification in all) {
+            notification.showNotification()
+        }
+    }
+
+    fun refreshNotification(notificationType: NotificationType) {
+        for (notification in all) {
+            if (notification.type == notificationType) {
+                notification.refreshNotification()
+                break
+            }
+        }
+    }
+
+    fun onNotificationDismissed(notificationType: NotificationType) {
+        for (notification in all) {
+            if (notification.type == notificationType) {
+                notification.onNotificationDismissed()
+                break
+            }
+        }
+    }
+
+    fun hasAnyTopNotification(): Boolean {
+        for (notification in all) {
+            if (notification.isTop) {
+                return true
+            }
+        }
+        return false
+    }
+
+    fun refreshNotifications() {
+        if (!hasAnyTopNotification()) {
+            removeTopNotification()
+        }
+        for (notification in all) {
+            notification.refreshNotification()
+        }
+    }
+
+    fun removeTopNotification() {
+        val notificationManager = NotificationManagerCompat.from(app)
+        notificationManager.cancel(TelegramNotification.TOP_NOTIFICATION_SERVICE_ID)
+    }
+
+    fun removeNotification(notificationType: NotificationType) {
+        for (notification in all) {
+            if (notification.type == notificationType) {
+                notification.removeNotification()
+                break
+            }
+        }
+    }
+
+    fun removeNotifications() {
+        for (notification in all) {
+            notification.removeNotification()
+        }
+    }
+
+    @TargetApi(26)
+    fun createNotificationChannel() {
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
+            val channel = NotificationChannel(NOTIFICATION_CHANEL_ID,
+                    app.getString(R.string.osmand_service), NotificationManager.IMPORTANCE_LOW)
+            channel.enableVibration(false)
+            channel.description = app.getString(R.string.osmand_service_descr)
+            val mNotificationManager = app
+                    .getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+            mNotificationManager.createNotificationChannel(channel)
+        }
+    }
+
+    companion object {
+        const val NOTIFICATION_CHANEL_ID = "osmand_telegram_background_service"
+    }
+}

OsmAnd-telegram/src/main/java/net/osmand/telegram/notifications/ShareLocationNotification.kt

@@ -0,0 +1,152 @@
+package net.osmand.telegram.notifications
+
+import android.app.PendingIntent
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
+import android.support.v4.app.NotificationCompat
+import android.support.v4.content.ContextCompat
+import net.osmand.telegram.R
+import net.osmand.telegram.TelegramApplication
+import net.osmand.telegram.utils.OsmandFormatter
+import net.osmand.util.Algorithms
+
+class ShareLocationNotification(app: TelegramApplication) : TelegramNotification(app, GROUP_NAME) {
+
+    private var wasNoDataDismissed: Boolean = false
+    private var lastBuiltNoData: Boolean = false
+
+    override val type: TelegramNotification.NotificationType
+        get() = TelegramNotification.NotificationType.SHARE_LOCATION
+
+    override val priority: Int
+        get() = NotificationCompat.PRIORITY_DEFAULT
+
+    override val isActive: Boolean
+        get() {
+            val service = app.locationService
+            return isEnabled && service != null
+        }
+
+    override val isEnabled: Boolean
+        get() = app.settings.hasAnyChatToShareLocation()
+
+    override val osmandNotificationId: Int
+        get() = TelegramNotification.SHARE_LOCATION_NOTIFICATION_SERVICE_ID
+
+    override val osmandWearableNotificationId: Int
+        get() = TelegramNotification.WEAR_SHARE_LOCATION_NOTIFICATION_SERVICE_ID
+
+    init {
+        app.registerReceiver(object : BroadcastReceiver() {
+
+            override fun onReceive(context: Context, intent: Intent) {
+                app.shareLocationHelper.startSharingLocation()
+            }
+        }, IntentFilter(OSMAND_START_LOCATION_SHARING_SERVICE_ACTION))
+
+        app.registerReceiver(object : BroadcastReceiver() {
+
+            override fun onReceive(context: Context, intent: Intent) {
+                app.shareLocationHelper.pauseSharingLocation()
+            }
+        }, IntentFilter(OSMAND_PAUSE_LOCATION_SHARING_SERVICE_ACTION))
+
+        app.registerReceiver(object : BroadcastReceiver() {
+
+            override fun onReceive(context: Context, intent: Intent) {
+                app.shareLocationHelper.stopSharingLocation()
+            }
+        }, IntentFilter(OSMAND_STOP_LOCATION_SHARING_SERVICE_ACTION))
+    }
+
+    override fun onNotificationDismissed() {
+        if (!wasNoDataDismissed) {
+            wasNoDataDismissed = lastBuiltNoData
+        }
+    }
+
+    override fun buildNotification(wearable: Boolean): NotificationCompat.Builder? {
+        if (!isEnabled) {
+            return null
+        }
+        val notificationTitle: String
+        val notificationText: String
+        color = 0
+        icon = R.drawable.ic_action_polygom_dark
+        val shareLocationHelper = app.shareLocationHelper
+        val isSharingLocation = shareLocationHelper.sharingLocation
+        val sharedDistance = shareLocationHelper.distance.toFloat()
+        ongoing = true
+        lastBuiltNoData = false
+        if (isSharingLocation) {
+            color = ContextCompat.getColor(app, R.color.osmand_orange)
+            notificationTitle = (app.getString(R.string.sharing_location) + " • "
+                    + Algorithms.formatDuration((shareLocationHelper.duration / 1000).toInt(), true))
+            notificationText = (app.getString(R.string.shared_string_distance)
+                    + ": " + OsmandFormatter.getFormattedDistance(sharedDistance, app))
+        } else {
+            if (sharedDistance > 0) {
+                notificationTitle = (app.getString(R.string.shared_string_paused) + " • "
+                        + Algorithms.formatDuration((shareLocationHelper.duration / 1000).toInt(), true))
+                notificationText = (app.getString(R.string.shared_string_distance)
+                        + ": " + OsmandFormatter.getFormattedDistance(sharedDistance, app))
+            } else {
+                ongoing = false
+                notificationTitle = app.getString(R.string.share_location)
+                notificationText = app.getString(R.string.shared_string_no_data)
+                lastBuiltNoData = true
+            }
+        }
+
+        if ((wasNoDataDismissed || !app.settings.showNotificationAlways) && !ongoing) {
+            return null
+        }
+
+        val notificationBuilder = createBuilder(wearable)
+                .setContentTitle(notificationTitle)
+                .setStyle(NotificationCompat.BigTextStyle().bigText(notificationText))
+
+        val stopIntent = Intent(OSMAND_STOP_LOCATION_SHARING_SERVICE_ACTION)
+        val stopPendingIntent = PendingIntent.getBroadcast(app, 0, stopIntent,
+                PendingIntent.FLAG_UPDATE_CURRENT)
+        if (isSharingLocation) {
+            if (app.shareLocationHelper.distance > 0) {
+                val pauseIntent = Intent(OSMAND_PAUSE_LOCATION_SHARING_SERVICE_ACTION)
+                val pausePendingIntent = PendingIntent.getBroadcast(app, 0, pauseIntent,
+                        PendingIntent.FLAG_UPDATE_CURRENT)
+                notificationBuilder.addAction(R.drawable.ic_pause,
+                        app.getString(R.string.shared_string_pause), pausePendingIntent)
+                notificationBuilder.addAction(R.drawable.ic_action_rec_stop,
+                        app.getString(R.string.shared_string_stop), stopPendingIntent)
+            } else {
+                notificationBuilder.addAction(R.drawable.ic_action_rec_stop,
+                        app.getString(R.string.shared_string_stop), stopPendingIntent)
+            }
+        } else {
+            val startIntent = Intent(OSMAND_START_LOCATION_SHARING_SERVICE_ACTION)
+            val startPendingIntent = PendingIntent.getBroadcast(app, 0, startIntent,
+                    PendingIntent.FLAG_UPDATE_CURRENT)
+            if (sharedDistance > 0) {
+                notificationBuilder.addAction(R.drawable.ic_action_rec_start,
+                        app.getString(R.string.shared_string_continue), startPendingIntent)
+                notificationBuilder.addAction(R.drawable.ic_action_rec_stop,
+                        app.getString(R.string.shared_string_stop), stopPendingIntent)
+            } else {
+                notificationBuilder.addAction(R.drawable.ic_action_rec_start,
+                        app.getString(R.string.shared_string_start), startPendingIntent)
+            }
+        }
+
+        return notificationBuilder
+    }
+
+    companion object {
+
+        const val OSMAND_START_LOCATION_SHARING_SERVICE_ACTION = "osmand_start_location_sharing_service_action"
+        const val OSMAND_PAUSE_LOCATION_SHARING_SERVICE_ACTION = "osmand_pause_location_sharing_service_action"
+        const val OSMAND_STOP_LOCATION_SHARING_SERVICE_ACTION = "osmand_stop_location_sharing_service_action"
+        const val GROUP_NAME = "share_location"
+    }
+}

OsmAnd-telegram/src/main/java/net/osmand/telegram/notifications/TelegramNotification.kt

@@ -0,0 +1,134 @@
+package net.osmand.telegram.notifications
+
+import android.annotation.SuppressLint
+import android.app.Notification
+import android.app.PendingIntent
+import android.content.Context
+import android.content.Intent
+import android.support.v4.app.NotificationCompat
+import android.support.v4.app.NotificationManagerCompat
+
+import net.osmand.telegram.MainActivity
+import net.osmand.telegram.TelegramApplication
+
+
+abstract class TelegramNotification(protected var app: TelegramApplication, val groupName: String) {
+    protected var ongoing = true
+    protected var color: Int = 0
+    protected var icon: Int = 0
+    var isTop: Boolean = false
+
+    abstract val type: NotificationType
+
+    abstract val osmandNotificationId: Int
+
+    abstract val osmandWearableNotificationId: Int
+
+    abstract val priority: Int
+
+    abstract val isActive: Boolean
+
+    abstract val isEnabled: Boolean
+
+    enum class NotificationType {
+        SHARE_LOCATION
+    }
+
+    @SuppressLint("InlinedApi")
+    protected fun createBuilder(wearable: Boolean): NotificationCompat.Builder {
+        val contentIntent = Intent(app, MainActivity::class.java)
+        val contentPendingIntent = PendingIntent.getActivity(app, 0, contentIntent,
+                PendingIntent.FLAG_UPDATE_CURRENT)
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
+            app.notificationHelper.createNotificationChannel()
+        }
+        val builder = NotificationCompat.Builder(app, NotificationHelper.NOTIFICATION_CHANEL_ID)
+                .setVisibility(android.support.v4.app.NotificationCompat.VISIBILITY_PUBLIC)
+                .setPriority(if (isTop) NotificationCompat.PRIORITY_HIGH else priority)
+                .setOngoing(ongoing && !wearable)
+                .setContentIntent(contentPendingIntent)
+                .setDeleteIntent(NotificationDismissReceiver.createIntent(app, type))
+                .setGroup(groupName).setGroupSummary(!wearable)
+
+        if (color != 0) {
+            builder.color = color
+        }
+        if (icon != 0) {
+            builder.setSmallIcon(icon)
+        }
+
+        return builder
+    }
+
+    abstract fun buildNotification(wearable: Boolean): NotificationCompat.Builder?
+
+    fun setupNotification(notification: Notification) {}
+
+    open fun onNotificationDismissed() {}
+
+    private fun notifyWearable(notificationManager: NotificationManagerCompat) {
+        val wearNotificationBuilder = buildNotification(true)
+        if (wearNotificationBuilder != null) {
+            val wearNotification = wearNotificationBuilder.build()
+            notificationManager.notify(osmandWearableNotificationId, wearNotification)
+        }
+    }
+
+    fun showNotification(): Boolean {
+        val notificationManager = NotificationManagerCompat.from(app)
+        if (isEnabled) {
+            val notificationBuilder = buildNotification(false)
+            if (notificationBuilder != null) {
+                val notification = notificationBuilder.build()
+                setupNotification(notification)
+                notificationManager.notify(if (isTop) TOP_NOTIFICATION_SERVICE_ID else osmandNotificationId, notification)
+                notifyWearable(notificationManager)
+                return true
+            }
+        }
+        return false
+    }
+
+    fun refreshNotification(): Boolean {
+        val notificationManager = NotificationManagerCompat.from(app)
+        if (isEnabled) {
+            val notificationBuilder = buildNotification(false)
+            if (notificationBuilder != null) {
+                val notification = notificationBuilder.build()
+                setupNotification(notification)
+                if (isTop) {
+                    notificationManager.cancel(osmandNotificationId)
+                    notificationManager.notify(TOP_NOTIFICATION_SERVICE_ID, notification)
+                } else {
+                    notificationManager.notify(osmandNotificationId, notification)
+                }
+                notifyWearable(notificationManager)
+                return true
+            } else {
+                notificationManager.cancel(osmandNotificationId)
+            }
+        } else {
+            notificationManager.cancel(osmandNotificationId)
+        }
+        return false
+    }
+
+    fun removeNotification() {
+        val notificationManager = NotificationManagerCompat.from(app)
+        notificationManager.cancel(osmandNotificationId)
+        notificationManager.cancel(osmandWearableNotificationId)
+    }
+
+    fun closeSystemDialogs(context: Context) {
+        val it = Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)
+        context.sendBroadcast(it)
+    }
+
+    companion object {
+
+        const val SHARE_LOCATION_NOTIFICATION_SERVICE_ID = 6
+        const val TOP_NOTIFICATION_SERVICE_ID = 100
+
+        const val WEAR_SHARE_LOCATION_NOTIFICATION_SERVICE_ID = 1006
+    }
+}

OsmAnd-telegram/src/main/java/net/osmand/telegram/utils/AndroidUtils.kt

@@ -1,8 +1,11 @@
 package net.osmand.telegram.utils
 
+import android.Manifest
 import android.app.Activity
 import android.content.Context
+import android.content.pm.PackageManager
 import android.content.res.Configuration
+import android.support.v4.app.ActivityCompat
 import android.view.View
 import android.view.inputmethod.InputMethodManager
 
@@ -32,4 +35,8 @@ object AndroidUtils {
             }
         }
     }
+
+    fun isLocationPermissionAvailable(context: Context): Boolean {
+        return ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
+    }
 }

OsmAnd-telegram/src/main/java/net/osmand/telegram/utils/OsmandFormatter.java

@@ -0,0 +1,267 @@
+package net.osmand.telegram.utils;
+
+import android.content.Context;
+
+import net.osmand.telegram.R;
+import net.osmand.telegram.TelegramApplication;
+
+import java.text.DecimalFormat;
+import java.text.MessageFormat;
+
+public class OsmandFormatter {
+
+    public final static float METERS_IN_KILOMETER = 1000f;
+    public final static float METERS_IN_ONE_MILE = 1609.344f; // 1609.344
+    public final static float METERS_IN_ONE_NAUTICALMILE = 1852f; // 1852
+
+    public final static float YARDS_IN_ONE_METER = 1.0936f;
+    public final static float FEET_IN_ONE_METER = YARDS_IN_ONE_METER * 3f;
+    private static final DecimalFormat fixed2 = new DecimalFormat("0.00");
+    private static final DecimalFormat fixed1 = new DecimalFormat("0.0");
+    {
+        fixed2.setMinimumFractionDigits(2);
+        fixed1.setMinimumFractionDigits(1);
+        fixed1.setMinimumIntegerDigits(1);
+        fixed2.setMinimumIntegerDigits(1);
+    }
+
+    public static String getFormattedDuration(int seconds, TelegramApplication ctx) {
+        int hours = seconds / (60 * 60);
+        int minutes = (seconds / 60) % 60;
+        if (hours > 0) {
+            return hours + " "
+                    + ctx.getString(R.string.shared_string_hour_short)
+                    + (minutes > 0 ? " " + minutes + " "
+                    + ctx.getString(R.string.shared_string_minute_short) : "");
+        } else {
+            return minutes + " " + ctx.getString(R.string.shared_string_minute_short);
+        }
+    }
+
+    public static double calculateRoundedDist(double distInMeters, TelegramApplication ctx) {
+        MetricsConstants mc = ctx.getSettings().getMetricsConstants();
+        double mainUnitInMeter = 1;
+        double metersInSecondUnit = METERS_IN_KILOMETER;
+        if (mc == MetricsConstants.MILES_AND_FEET) {
+            mainUnitInMeter = FEET_IN_ONE_METER;
+            metersInSecondUnit = METERS_IN_ONE_MILE;
+        } else if (mc == MetricsConstants.MILES_AND_METERS) {
+            mainUnitInMeter = 1;
+            metersInSecondUnit = METERS_IN_ONE_MILE;
+        } else if (mc == MetricsConstants.NAUTICAL_MILES) {
+            mainUnitInMeter = 1;
+            metersInSecondUnit = METERS_IN_ONE_NAUTICALMILE;
+        } else if (mc == MetricsConstants.MILES_AND_YARDS) {
+            mainUnitInMeter = YARDS_IN_ONE_METER;
+            metersInSecondUnit = METERS_IN_ONE_MILE;
+        }
+
+        // 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000 ...
+        int generator = 1;
+        byte pointer = 1;
+        double point = mainUnitInMeter;
+        double roundDist = 1;
+        while (distInMeters * point > generator) {
+            roundDist = (generator / point);
+            if (pointer++ % 3 == 2) {
+                generator = generator * 5 / 2;
+            } else {
+                generator *= 2;
+            }
+
+            if (point == mainUnitInMeter && metersInSecondUnit * mainUnitInMeter * 0.9f <= generator) {
+                point = 1 / metersInSecondUnit;
+                generator = 1;
+                pointer = 1;
+            }
+        }
+        //Miles exceptions: 2000ft->0.5mi, 1000ft->0.25mi, 1000yd->0.5mi, 500yd->0.25mi, 1000m ->0.5mi, 500m -> 0.25mi
+        if (mc == MetricsConstants.MILES_AND_METERS && roundDist == 1000) {
+            roundDist = 0.5f * METERS_IN_ONE_MILE;
+        } else if (mc == MetricsConstants.MILES_AND_METERS && roundDist == 500) {
+            roundDist = 0.25f * METERS_IN_ONE_MILE;
+        } else if (mc == MetricsConstants.MILES_AND_FEET && roundDist == 2000 / (double) FEET_IN_ONE_METER) {
+            roundDist = 0.5f * METERS_IN_ONE_MILE;
+        } else if (mc == MetricsConstants.MILES_AND_FEET && roundDist == 1000 / (double) FEET_IN_ONE_METER) {
+            roundDist = 0.25f * METERS_IN_ONE_MILE;
+        } else if (mc == MetricsConstants.MILES_AND_YARDS && roundDist == 1000 / (double) YARDS_IN_ONE_METER) {
+            roundDist = 0.5f * METERS_IN_ONE_MILE;
+        } else if (mc == MetricsConstants.MILES_AND_YARDS && roundDist == 500 / (double) YARDS_IN_ONE_METER) {
+            roundDist = 0.25f * METERS_IN_ONE_MILE;
+        }
+        return roundDist;
+    }
+
+    public static String getFormattedRoundDistanceKm(float meters, int digits, TelegramApplication ctx) {
+        int mainUnitStr = R.string.km;
+        float mainUnitInMeters = METERS_IN_KILOMETER;
+        if (digits == 0) {
+            return (int) (meters / mainUnitInMeters + 0.5) + " " + ctx.getString(mainUnitStr); //$NON-NLS-1$
+        } else if (digits == 1) {
+            return fixed1.format(((float) meters) / mainUnitInMeters) + " " + ctx.getString(mainUnitStr);
+        } else {
+            return fixed2.format(((float) meters) / mainUnitInMeters) + " " + ctx.getString(mainUnitStr);
+        }
+    }
+
+    public static String getFormattedDistance(float meters, TelegramApplication ctx) {
+        return getFormattedDistance(meters, ctx, true);
+    }
+
+    public static String getFormattedDistance(float meters, TelegramApplication ctx, boolean forceTrailingZeros) {
+        String format1 = forceTrailingZeros ? "{0,number,0.0} " : "{0,number,0.#} ";
+        String format2 = forceTrailingZeros ? "{0,number,0.00} " : "{0,number,0.##} ";
+
+        MetricsConstants mc = ctx.getSettings().getMetricsConstants();
+        int mainUnitStr;
+        float mainUnitInMeters;
+        if (mc == MetricsConstants.KILOMETERS_AND_METERS) {
+            mainUnitStr = R.string.km;
+            mainUnitInMeters = METERS_IN_KILOMETER;
+        } else if (mc == MetricsConstants.NAUTICAL_MILES) {
+            mainUnitStr = R.string.nm;
+            mainUnitInMeters = METERS_IN_ONE_NAUTICALMILE;
+        } else {
+            mainUnitStr = R.string.mile;
+            mainUnitInMeters = METERS_IN_ONE_MILE;
+        }
+
+        if (meters >= 100 * mainUnitInMeters) {
+            return (int) (meters / mainUnitInMeters + 0.5) + " " + ctx.getString(mainUnitStr); //$NON-NLS-1$
+        } else if (meters > 9.99f * mainUnitInMeters) {
+            return MessageFormat.format(format1 + ctx.getString(mainUnitStr), ((float) meters) / mainUnitInMeters).replace('\n', ' '); //$NON-NLS-1$
+        } else if (meters > 0.999f * mainUnitInMeters) {
+            return MessageFormat.format(format2 + ctx.getString(mainUnitStr), ((float) meters) / mainUnitInMeters).replace('\n', ' '); //$NON-NLS-1$
+        } else if (mc == MetricsConstants.MILES_AND_FEET && meters > 0.249f * mainUnitInMeters) {
+            return MessageFormat.format(format2 + ctx.getString(mainUnitStr), ((float) meters) / mainUnitInMeters).replace('\n', ' '); //$NON-NLS-1$
+        } else if (mc == MetricsConstants.MILES_AND_METERS && meters > 0.249f * mainUnitInMeters) {
+            return MessageFormat.format(format2 + ctx.getString(mainUnitStr), ((float) meters) / mainUnitInMeters).replace('\n', ' '); //$NON-NLS-1$
+        } else if (mc == MetricsConstants.MILES_AND_YARDS && meters > 0.249f * mainUnitInMeters) {
+            return MessageFormat.format(format2 + ctx.getString(mainUnitStr), ((float) meters) / mainUnitInMeters).replace('\n', ' '); //$NON-NLS-1$
+        } else if (mc == MetricsConstants.NAUTICAL_MILES && meters > 0.99f * mainUnitInMeters) {
+            return MessageFormat.format(format2 + ctx.getString(mainUnitStr), ((float) meters) / mainUnitInMeters).replace('\n', ' '); //$NON-NLS-1$
+        } else {
+            if (mc == MetricsConstants.KILOMETERS_AND_METERS || mc == MetricsConstants.MILES_AND_METERS) {
+                return ((int) (meters + 0.5)) + " " + ctx.getString(R.string.m); //$NON-NLS-1$
+            } else if (mc == MetricsConstants.MILES_AND_FEET) {
+                int feet = (int) (meters * FEET_IN_ONE_METER + 0.5);
+                return feet + " " + ctx.getString(R.string.foot); //$NON-NLS-1$
+            } else if (mc == MetricsConstants.MILES_AND_YARDS) {
+                int yards = (int) (meters * YARDS_IN_ONE_METER + 0.5);
+                return yards + " " + ctx.getString(R.string.yard); //$NON-NLS-1$
+            }
+            return ((int) (meters + 0.5)) + " " + ctx.getString(R.string.m); //$NON-NLS-1$
+        }
+    }
+
+    public static String getFormattedAlt(double alt, TelegramApplication ctx) {
+        MetricsConstants mc = ctx.getSettings().getMetricsConstants();
+        if (mc == MetricsConstants.KILOMETERS_AND_METERS) {
+            return ((int) (alt + 0.5)) + " " + ctx.getString(R.string.m);
+        } else {
+            return ((int) (alt * FEET_IN_ONE_METER + 0.5)) + " " + ctx.getString(R.string.foot);
+        }
+    }
+
+    public static String getFormattedSpeed(float metersperseconds, TelegramApplication ctx) {
+        SpeedConstants mc = ctx.getSettings().getSpeedConstants();
+        float kmh = metersperseconds * 3.6f;
+        if (mc == SpeedConstants.KILOMETERS_PER_HOUR) {
+            // e.g. car case and for high-speeds: Display rounded to 1 km/h (5% precision at 20 km/h)
+            if (kmh >= 20) {
+                return ((int) Math.round(kmh)) + " " + mc.toShortString(ctx);
+            }
+            // for smaller values display 1 decimal digit x.y km/h, (0.5% precision at 20 km/h)
+            int kmh10 = (int) Math.round(kmh * 10f);
+            return (kmh10 / 10f) + " " + mc.toShortString(ctx);
+        } else if (mc == SpeedConstants.MILES_PER_HOUR) {
+            float mph = kmh * METERS_IN_KILOMETER / METERS_IN_ONE_MILE;
+            if (mph >= 20) {
+                return ((int) Math.round(mph)) + " " + mc.toShortString(ctx);
+            } else {
+                int mph10 = (int) Math.round(mph * 10f);
+                return (mph10 / 10f) + " " + mc.toShortString(ctx);
+            }
+        } else if (mc == SpeedConstants.NAUTICALMILES_PER_HOUR) {
+            float mph = kmh * METERS_IN_KILOMETER / METERS_IN_ONE_NAUTICALMILE;
+            if (mph >= 20) {
+                return ((int) Math.round(mph)) + " " + mc.toShortString(ctx);
+            } else {
+                int mph10 = (int) Math.round(mph * 10f);
+                return (mph10 / 10f) + " " + mc.toShortString(ctx);
+            }
+        } else if (mc == SpeedConstants.MINUTES_PER_KILOMETER) {
+            if (metersperseconds < 0.111111111) {
+                return "-" + mc.toShortString(ctx);
+            }
+            float minperkm = METERS_IN_KILOMETER / (metersperseconds * 60);
+            if (minperkm >= 10) {
+                return ((int) Math.round(minperkm)) + " " + mc.toShortString(ctx);
+            } else {
+                int mph10 = (int) Math.round(minperkm * 10f);
+                return (mph10 / 10f) + " " + mc.toShortString(ctx);
+            }
+        } else if (mc == SpeedConstants.MINUTES_PER_MILE) {
+            if (metersperseconds < 0.111111111) {
+                return "-" + mc.toShortString(ctx);
+            }
+            float minperm = (METERS_IN_ONE_MILE) / (metersperseconds * 60);
+            if (minperm >= 10) {
+                return ((int) Math.round(minperm)) + " " + mc.toShortString(ctx);
+            } else {
+                int mph10 = (int) Math.round(minperm * 10f);
+                return (mph10 / 10f) + " " + mc.toShortString(ctx);
+            }
+        } else /*if (mc == SpeedConstants.METERS_PER_SECOND) */ {
+            if (metersperseconds >= 10) {
+                return ((int) Math.round(metersperseconds)) + " " + SpeedConstants.METERS_PER_SECOND.toShortString(ctx);
+            }
+            // for smaller values display 1 decimal digit x.y km/h, (0.5% precision at 20 km/h)
+            int kmh10 = (int) Math.round(metersperseconds * 10f);
+            return (kmh10 / 10f) + " " + SpeedConstants.METERS_PER_SECOND.toShortString(ctx);
+        }
+    }
+
+    public enum MetricsConstants {
+        KILOMETERS_AND_METERS(R.string.si_km_m),
+        MILES_AND_FEET(R.string.si_mi_feet),
+        MILES_AND_METERS(R.string.si_mi_meters),
+        MILES_AND_YARDS(R.string.si_mi_yard),
+        NAUTICAL_MILES(R.string.si_nm);
+
+        private final int key;
+
+        MetricsConstants(int key) {
+            this.key = key;
+        }
+
+        public String toHumanString(Context ctx) {
+            return ctx.getString(key);
+        }
+    }
+
+    public enum SpeedConstants {
+        KILOMETERS_PER_HOUR(R.string.km_h, R.string.si_kmh),
+        MILES_PER_HOUR(R.string.mile_per_hour, R.string.si_mph),
+        METERS_PER_SECOND(R.string.m_s, R.string.si_m_s),
+        MINUTES_PER_MILE(R.string.min_mile, R.string.si_min_m),
+        MINUTES_PER_KILOMETER(R.string.min_km, R.string.si_min_km),
+        NAUTICALMILES_PER_HOUR(R.string.nm_h, R.string.si_nm_h);
+
+        private final int key;
+        private int descr;
+
+        SpeedConstants(int key, int descr) {
+            this.key = key;
+            this.descr = descr;
+        }
+
+        public String toHumanString(Context ctx) {
+            return ctx.getString(descr);
+        }
+
+        public String toShortString(Context ctx) {
+            return ctx.getString(key);
+        }
+    }
+}

OsmAnd-telegram/src/main/res/values/colors.xml

@@ -9,4 +9,6 @@
     <color name="icon_color_light">#ccc</color>
     <color name="icon_color_dark">#ff4f4f4f</color>
 
+    <color name="osmand_orange">#ff8f00</color>
+
 </resources>

OsmAnd-telegram/src/main/res/values/strings.xml

@@ -12,4 +12,48 @@
     <string name="closing">Closing</string>
     <string name="shared_string_continue">Continue</string>
     <string name="shared_string_cancel">Cancel</string>
+    <string name="gps_network_not_enabled">Location service not enabled. Turn it on?</string>
+    <string name="shared_string_settings">Settings</string>
+    <string name="no_location_permission">App has no permission to access location data.</string>
+    <string name="gps_not_available">Please enable GPS in the settings</string>
+    <string name="location_service_no_gps_available">The share location service requires a location provider to be turned on.</string>
+    <string name="osmand_service">Background mode</string>
+    <string name="osmand_service_descr">OsmAnd Telegram runs in the background with the screen off.</string>
+    <string name="shared_string_distance">Distance</string>
+    <string name="share_location">Share location</string>
+    <string name="sharing_location">Sharing location</string>
+    <string name="shared_string_paused">Paused</string>
+    <string name="shared_string_no_data">No data</string>
+    <string name="shared_string_pause">Pause</string>
+    <string name="shared_string_start">Start</string>
+    <string name="shared_string_stop">Stop</string>
+    <string name="process_location_service">OsmAnd Telegram location service</string>
+
+    <string name="yard">yd</string>
+    <string name="foot">ft</string>
+    <string name="mile">mi</string>
+    <string name="km">km</string>
+    <string name="m">m</string>
+    <string name="nm">nmi</string>
+    <string name="min_mile">min/m</string>
+    <string name="min_km">min/km</string>
+    <string name="nm_h">nmi/h</string>
+    <string name="m_s">m/s</string>
+    <string name="km_h">km/h</string>
+    <string name="mile_per_hour">mph</string>
+    <string name="si_kmh">Kilometers per hour</string>
+    <string name="si_mph">Miles per hour</string>
+    <string name="si_m_s">Meters per second</string>
+    <string name="si_min_km">Minutes per kilometer</string>
+    <string name="si_min_m">Minutes per mile</string>
+    <string name="si_nm_h">Nautical miles per hour (knot)</string>
+    <string name="si_mi_feet">Miles/feet</string>
+    <string name="si_mi_yard">Miles/yards</string>
+    <string name="si_km_m">Kilometers/meters</string>
+    <string name="si_nm">Nautical miles</string>
+    <string name="si_mi_meters">Miles/meters</string>
+    <string name="shared_string_hour_short">h</string>
+    <string name="shared_string_minute_short">min</string>
+
+
 </resources>