Merge pull request #338 from sdex/run_stopwatch_in_background

Allow stopwatch to run in the background

app/src/main/AndroidManifest.xml

@@ -100,6 +100,8 @@
 
         <service android:name=".services.TimerService" />
 
+        <service android:name=".services.StopwatchService" />
+
         <receiver android:name=".receivers.AlarmReceiver" />
 
         <receiver android:name=".receivers.HideTimerReceiver" />

app/src/main/kotlin/com/simplemobiletools/clock/App.kt

@@ -12,9 +12,13 @@ import androidx.lifecycle.OnLifecycleEvent
 import androidx.lifecycle.ProcessLifecycleOwner
 import com.facebook.stetho.Stetho
 import com.simplemobiletools.clock.extensions.*
+import com.simplemobiletools.clock.helpers.Stopwatch
+import com.simplemobiletools.clock.helpers.Stopwatch.State
 import com.simplemobiletools.clock.models.TimerEvent
 import com.simplemobiletools.clock.models.TimerState
+import com.simplemobiletools.clock.services.StopwatchStopService
 import com.simplemobiletools.clock.services.TimerStopService
+import com.simplemobiletools.clock.services.startStopwatchService
 import com.simplemobiletools.clock.services.startTimerService
 import com.simplemobiletools.commons.extensions.checkUseEnglish
 import org.greenrobot.eventbus.EventBus
@@ -49,6 +53,9 @@ class App : Application(), LifecycleObserver {
                 startTimerService(this)
             }
         }
+        if (Stopwatch.state == State.RUNNING) {
+            startStopwatchService(this)
+        }
     }
 
     @OnLifecycleEvent(Lifecycle.Event.ON_START)
@@ -62,6 +69,9 @@ class App : Application(), LifecycleObserver {
                 }
             }
         }
+        if (Stopwatch.state == State.RUNNING) {
+            EventBus.getDefault().post(StopwatchStopService)
+        }
     }
 
     @Subscribe(threadMode = ThreadMode.MAIN)

app/src/main/kotlin/com/simplemobiletools/clock/extensions/Context.kt

@@ -159,6 +159,12 @@ fun Context.getOpenTimerTabIntent(timerId: Int): PendingIntent {
     return PendingIntent.getActivity(this, timerId, intent, PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE)
 }
 
+fun Context.getOpenStopwatchTabIntent(): PendingIntent {
+    val intent = getLaunchIntent() ?: Intent(this, SplashActivity::class.java)
+    intent.putExtra(OPEN_TAB, TAB_STOPWATCH)
+    return PendingIntent.getActivity(this, OPEN_STOPWATCH_TAB_INTENT_ID, intent, PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE)
+}
+
 fun Context.getAlarmIntent(alarm: Alarm): PendingIntent {
     val intent = Intent(this, AlarmReceiver::class.java)
     intent.putExtra(ALARM_ID, alarm.id)

app/src/main/kotlin/com/simplemobiletools/clock/fragments/StopwatchFragment.kt

@@ -4,45 +4,25 @@ import android.graphics.Bitmap
 import android.graphics.Color
 import android.graphics.Matrix
 import android.os.Bundle
-import android.os.Handler
-import android.os.SystemClock
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
-import com.google.gson.Gson
-import com.google.gson.reflect.TypeToken
 import com.simplemobiletools.clock.R
 import com.simplemobiletools.clock.activities.SimpleActivity
 import com.simplemobiletools.clock.adapters.StopwatchAdapter
+import com.simplemobiletools.clock.extensions.config
 import com.simplemobiletools.clock.extensions.formatStopwatchTime
 import com.simplemobiletools.clock.helpers.SORT_BY_LAP
 import com.simplemobiletools.clock.helpers.SORT_BY_LAP_TIME
 import com.simplemobiletools.clock.helpers.SORT_BY_TOTAL_TIME
+import com.simplemobiletools.clock.helpers.Stopwatch
 import com.simplemobiletools.clock.models.Lap
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.SORT_DESCENDING
 import kotlinx.android.synthetic.main.fragment_stopwatch.view.*
 
 class StopwatchFragment : Fragment() {
-    private val UPDATE_INTERVAL = 10L
-    private val WAS_RUNNING = "was_running"
-    private val TOTAL_TICKS = "total_ticks"
-    private val CURRENT_TICKS = "current_ticks"
-    private val LAP_TICKS = "lap_ticks"
-    private val CURRENT_LAP = "current_lap"
-    private val LAPS = "laps"
-    private val SORTING = "sorting"
-
-    private val updateHandler = Handler()
-    private var uptimeAtStart = 0L
-    private var totalTicks = 0
-    private var currentTicks = 0    // ticks that reset at pause
-    private var lapTicks = 0
-    private var currentLap = 1
-    private var isRunning = false
-    private var sorting = SORT_BY_LAP or SORT_DESCENDING
-    private var laps = ArrayList<Lap>()
 
     private var storedTextColor = 0
 
@@ -51,6 +31,8 @@ class StopwatchFragment : Fragment() {
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
         storeStateVariables()
+        val sorting = requireContext().config.stopwatchLapsSort
+        Lap.sorting = sorting
         view = (inflater.inflate(R.layout.fragment_stopwatch, container, false) as ViewGroup).apply {
             stopwatch_time.setOnClickListener {
                 togglePlayPause()
@@ -78,20 +60,7 @@ class StopwatchFragment : Fragment() {
 
             stopwatch_lap.setOnClickListener {
                 stopwatch_sorting_indicators_holder.beVisible()
-                if (laps.isEmpty()) {
+                Stopwatch.lap()
-                    val lap = Lap(currentLap++, lapTicks * UPDATE_INTERVAL, totalTicks * UPDATE_INTERVAL)
-                    laps.add(0, lap)
-                    lapTicks = 0
-                } else {
-                    laps.first().apply {
-                        lapTime = lapTicks * UPDATE_INTERVAL
-                        totalTime = totalTicks * UPDATE_INTERVAL
-                    }
-                }
-
-                val lap = Lap(currentLap++, lapTicks * UPDATE_INTERVAL, totalTicks * UPDATE_INTERVAL)
-                laps.add(0, lap)
-                lapTicks = 0
                 updateLaps()
             }
 
@@ -100,11 +69,10 @@ class StopwatchFragment : Fragment() {
                     changeSorting(it)
                 }
             }
-            Lap.sorting = sorting
             stopwatch_list.adapter = stopwatchAdapter
         }
 
-        updateSortingIndicators()
+        updateSortingIndicators(sorting)
         return view
     }
 
@@ -116,64 +84,25 @@ class StopwatchFragment : Fragment() {
         if (storedTextColor != configTextColor) {
             stopwatchAdapter.updateTextColor(configTextColor)
         }
+
+        Stopwatch.addUpdateListener(updateListener)
+        updateLaps()
+        view.stopwatch_sorting_indicators_holder.beVisibleIf(Stopwatch.laps.isNotEmpty())
+        if (Stopwatch.laps.isNotEmpty()) {
+            updateSorting(Lap.sorting)
+        }
     }
 
     override fun onPause() {
         super.onPause()
         storeStateVariables()
-    }
+        Stopwatch.removeUpdateListener(updateListener)
-
-    override fun onDestroy() {
-        super.onDestroy()
-        if (isRunning && activity?.isChangingConfigurations == false) {
-            context?.toast(R.string.stopwatch_stopped)
-        }
-        isRunning = false
-        updateHandler.removeCallbacks(updateRunnable)
     }
 
     private fun storeStateVariables() {
         storedTextColor = requireContext().getProperTextColor()
     }
 
-    override fun onSaveInstanceState(outState: Bundle) {
-        outState.apply {
-            putBoolean(WAS_RUNNING, isRunning)
-            putInt(TOTAL_TICKS, totalTicks)
-            putInt(CURRENT_TICKS, currentTicks)
-            putInt(LAP_TICKS, lapTicks)
-            putInt(CURRENT_LAP, currentLap)
-            putInt(SORTING, sorting)
-            putString(LAPS, Gson().toJson(laps))
-            super.onSaveInstanceState(this)
-        }
-    }
-
-    override fun onViewStateRestored(savedInstanceState: Bundle?) {
-        super.onViewStateRestored(savedInstanceState)
-        savedInstanceState?.apply {
-            isRunning = getBoolean(WAS_RUNNING, false)
-            totalTicks = getInt(TOTAL_TICKS, 0)
-            currentTicks = getInt(CURRENT_TICKS, 0)
-            lapTicks = getInt(LAP_TICKS, 0)
-            currentLap = getInt(CURRENT_LAP, 0)
-            sorting = getInt(SORTING, SORT_BY_LAP or SORT_DESCENDING)
-
-            val lapsToken = object : TypeToken<List<Lap>>() {}.type
-            laps = Gson().fromJson(getString(LAPS), lapsToken)
-
-            if (laps.isNotEmpty()) {
-                view.stopwatch_sorting_indicators_holder.beVisibleIf(laps.isNotEmpty())
-                updateSorting()
-            }
-
-            if (isRunning) {
-                uptimeAtStart = SystemClock.uptimeMillis() - currentTicks * UPDATE_INTERVAL
-                updateStopwatchState(false)
-            }
-        }
-    }
-
     private fun setupViews() {
         val properPrimaryColor = requireContext().getProperPrimaryColor()
         view.apply {
@@ -181,60 +110,30 @@ class StopwatchFragment : Fragment() {
             stopwatch_play_pause.background = resources.getColoredDrawableWithColor(R.drawable.circle_background_filled, properPrimaryColor)
             stopwatch_reset.applyColorFilter(requireContext().getProperTextColor())
         }
-
-        updateIcons()
-        updateDisplayedText()
     }
 
-    private fun updateIcons() {
+    private fun updateIcons(state: Stopwatch.State) {
-        val drawableId = if (isRunning) R.drawable.ic_pause_vector else R.drawable.ic_play_vector
+        val drawableId = if (state == Stopwatch.State.RUNNING) R.drawable.ic_pause_vector else R.drawable.ic_play_vector
         val iconColor = if (requireContext().getProperPrimaryColor() == Color.WHITE) Color.BLACK else Color.WHITE
         view.stopwatch_play_pause.setImageDrawable(resources.getColoredDrawableWithColor(drawableId, iconColor))
     }
 
     private fun togglePlayPause() {
-        isRunning = !isRunning
+        Stopwatch.toggle(true)
-        updateStopwatchState(true)
     }
 
-    private fun updateStopwatchState(setUptimeAtStart: Boolean) {
-        updateIcons()
-        view.stopwatch_lap.beVisibleIf(isRunning)
 
-        if (isRunning) {
+    private fun updateDisplayedText(totalTime: Long, lapTime: Long, useLongerMSFormat: Boolean) {
-            updateHandler.post(updateRunnable)
+        view.stopwatch_time.text = totalTime.formatStopwatchTime(useLongerMSFormat)
-            view.stopwatch_reset.beVisible()
+        if (Stopwatch.laps.isNotEmpty() && lapTime != -1L) {
-            if (setUptimeAtStart) {
+            stopwatchAdapter.updateLastField(lapTime, totalTime)
-                uptimeAtStart = SystemClock.uptimeMillis()
-            }
-        } else {
-            val prevSessionsMS = (totalTicks - currentTicks) * UPDATE_INTERVAL
-            val totalDuration = SystemClock.uptimeMillis() - uptimeAtStart + prevSessionsMS
-            updateHandler.removeCallbacksAndMessages(null)
-            view.stopwatch_time.text = totalDuration.formatStopwatchTime(true)
-            currentTicks = 0
-            totalTicks--
-        }
-    }
-
-    private fun updateDisplayedText() {
-        view.stopwatch_time.text = (totalTicks * UPDATE_INTERVAL).formatStopwatchTime(false)
-        if (currentLap > 1) {
-            stopwatchAdapter.updateLastField(lapTicks * UPDATE_INTERVAL, totalTicks * UPDATE_INTERVAL)
         }
     }
 
     private fun resetStopwatch() {
-        updateHandler.removeCallbacksAndMessages(null)
+        Stopwatch.reset()
-        isRunning = false
-        currentTicks = 0
-        totalTicks = 0
-        currentLap = 1
-        lapTicks = 0
-        laps.clear()
-        updateIcons()
-        stopwatchAdapter.updateItems(laps)
 
+        updateLaps()
         view.apply {
             stopwatch_reset.beGone()
             stopwatch_lap.beGone()
@@ -244,21 +143,22 @@ class StopwatchFragment : Fragment() {
     }
 
     private fun changeSorting(clickedValue: Int) {
-        sorting = if (sorting and clickedValue != 0) {
+        val sorting = if (Lap.sorting and clickedValue != 0) {
-            sorting.flipBit(SORT_DESCENDING)
+            Lap.sorting.flipBit(SORT_DESCENDING)
         } else {
             clickedValue or SORT_DESCENDING
         }
-        updateSorting()
+        updateSorting(sorting)
     }
 
-    private fun updateSorting() {
+    private fun updateSorting(sorting: Int) {
-        updateSortingIndicators()
+        updateSortingIndicators(sorting)
         Lap.sorting = sorting
+        requireContext().config.stopwatchLapsSort = sorting
         updateLaps()
     }
 
-    private fun updateSortingIndicators() {
+    private fun updateSortingIndicators(sorting: Int) {
         var bitmap = requireContext().resources.getColoredBitmap(R.drawable.ic_sorting_triangle_vector, requireContext().getProperPrimaryColor())
         view.apply {
             stopwatch_sorting_indicator_1.beInvisibleIf(sorting and SORT_BY_LAP == 0)
@@ -281,20 +181,18 @@ class StopwatchFragment : Fragment() {
     }
 
     private fun updateLaps() {
-        stopwatchAdapter.updateItems(laps)
+        stopwatchAdapter.updateItems(Stopwatch.laps)
     }
 
-    private val updateRunnable = object : Runnable {
+    private val updateListener = object : Stopwatch.UpdateListener {
-        override fun run() {
+        override fun onUpdate(totalTime: Long, lapTime: Long, useLongerMSFormat: Boolean) {
-            if (isRunning) {
+            updateDisplayedText(totalTime, lapTime, useLongerMSFormat)
-                if (totalTicks % 10 == 0) {
+        }
-                    updateDisplayedText()
+
-                }
+        override fun onStateChanged(state: Stopwatch.State) {
-                totalTicks++
+            updateIcons(state)
-                currentTicks++
+            view.stopwatch_lap.beVisibleIf(state == Stopwatch.State.RUNNING)
-                lapTicks++
+            view.stopwatch_reset.beVisibleIf(state != Stopwatch.State.STOPPED)
-                updateHandler.postAtTime(this, uptimeAtStart + currentTicks * UPDATE_INTERVAL)
-            }
         }
     }
 }

app/src/main/kotlin/com/simplemobiletools/clock/helpers/Config.kt

@@ -10,6 +10,7 @@ import com.simplemobiletools.clock.models.TimerState
 import com.simplemobiletools.commons.extensions.getDefaultAlarmSound
 import com.simplemobiletools.commons.extensions.getDefaultAlarmTitle
 import com.simplemobiletools.commons.helpers.BaseConfig
+import com.simplemobiletools.commons.helpers.SORT_DESCENDING
 
 class Config(context: Context) : BaseConfig(context) {
     companion object {
@@ -81,4 +82,8 @@ class Config(context: Context) : BaseConfig(context) {
     var timerChannelId: String?
         get() = prefs.getString(TIMER_CHANNEL_ID, null)
         set(id) = prefs.edit().putString(TIMER_CHANNEL_ID, id).apply()
+
+    var stopwatchLapsSort: Int
+        get() = prefs.getInt(STOPWATCH_LAPS_SORT_BY, SORT_BY_LAP or SORT_DESCENDING)
+        set(stopwatchLapsSort) = prefs.edit().putInt(STOPWATCH_LAPS_SORT_BY, stopwatchLapsSort).apply()
 }

app/src/main/kotlin/com/simplemobiletools/clock/helpers/Constants.kt

@@ -22,6 +22,7 @@ const val ALARM_LAST_CONFIG = "alarm_last_config"
 const val TIMER_LAST_CONFIG = "timer_last_config"
 const val INCREASE_VOLUME_GRADUALLY = "increase_volume_gradually"
 const val ALARMS_SORT_BY = "alarms_sort_by"
+const val STOPWATCH_LAPS_SORT_BY = "stopwatch_laps_sort_by"
 
 const val TABS_COUNT = 4
 const val EDITED_TIME_ZONE_SEPARATOR = ":"
@@ -33,10 +34,12 @@ const val DEFAULT_MAX_TIMER_REMINDER_SECS = 60
 const val PICK_AUDIO_FILE_INTENT_ID = 9994
 const val REMINDER_ACTIVITY_INTENT_ID = 9995
 const val OPEN_ALARMS_TAB_INTENT_ID = 9996
+const val OPEN_STOPWATCH_TAB_INTENT_ID = 9993
 const val UPDATE_WIDGET_INTENT_ID = 9997
 const val OPEN_APP_INTENT_ID = 9998
 const val ALARM_NOTIF_ID = 9998
 const val TIMER_RUNNING_NOTIF_ID = 10000
+const val STOPWATCH_RUNNING_NOTIF_ID = 10001
 
 const val OPEN_TAB = "open_tab"
 const val TAB_CLOCK = 0

app/src/main/kotlin/com/simplemobiletools/clock/helpers/Stopwatch.kt

@@ -0,0 +1,130 @@
+package com.simplemobiletools.clock.helpers
+
+import android.os.Handler
+import android.os.Looper
+import android.os.SystemClock
+import com.simplemobiletools.clock.models.Lap
+import java.util.concurrent.CopyOnWriteArraySet
+
+private const val UPDATE_INTERVAL = 10L
+
+object Stopwatch {
+
+    private val updateHandler = Handler(Looper.getMainLooper())
+    private var uptimeAtStart = 0L
+    private var totalTicks = 0
+    private var currentTicks = 0    // ticks that reset at pause
+    private var lapTicks = 0
+    private var currentLap = 1
+    val laps = ArrayList<Lap>()
+    var state = State.STOPPED
+        private set(value) {
+            field = value
+            for (listener in updateListeners) {
+                listener.onStateChanged(value)
+            }
+        }
+    private var updateListeners = CopyOnWriteArraySet<UpdateListener>()
+
+    fun reset() {
+        updateHandler.removeCallbacksAndMessages(null)
+        state = State.STOPPED
+        currentTicks = 0
+        totalTicks = 0
+        currentLap = 1
+        lapTicks = 0
+        laps.clear()
+    }
+
+    fun toggle(setUptimeAtStart: Boolean) {
+        if (state != State.RUNNING) {
+            state = State.RUNNING
+            updateHandler.post(updateRunnable)
+            if (setUptimeAtStart) {
+                uptimeAtStart = SystemClock.uptimeMillis()
+            }
+        } else {
+            state = State.PAUSED
+            val prevSessionsMS = (totalTicks - currentTicks) * UPDATE_INTERVAL
+            val totalDuration = SystemClock.uptimeMillis() - uptimeAtStart + prevSessionsMS
+            updateHandler.removeCallbacksAndMessages(null)
+            currentTicks = 0
+            totalTicks--
+            for (listener in updateListeners) {
+                listener.onUpdate(totalDuration, -1, true)
+            }
+        }
+    }
+
+    fun lap() {
+        if (laps.isEmpty()) {
+            val lap = Lap(currentLap++, lapTicks * UPDATE_INTERVAL, totalTicks * UPDATE_INTERVAL)
+            laps.add(0, lap)
+            lapTicks = 0
+        } else {
+            laps.first().apply {
+                lapTime = lapTicks * UPDATE_INTERVAL
+                totalTime = totalTicks * UPDATE_INTERVAL
+            }
+        }
+
+        val lap = Lap(currentLap++, lapTicks * UPDATE_INTERVAL, totalTicks * UPDATE_INTERVAL)
+        laps.add(0, lap)
+        lapTicks = 0
+    }
+
+    /**
+     * Add a update listener to the stopwatch. The listener gets the current state
+     * immediately after adding. To avoid memory leaks the listener should be removed
+     * from the stopwatch.
+     * @param updateListener the listener
+     */
+    fun addUpdateListener(updateListener: UpdateListener) {
+        updateListeners.add(updateListener)
+        updateListener.onUpdate(
+            totalTicks * UPDATE_INTERVAL,
+            lapTicks * UPDATE_INTERVAL,
+            state != State.STOPPED
+        )
+        updateListener.onStateChanged(state)
+    }
+
+    /**
+     * Remove the listener from the stopwatch
+     * @param updateListener the listener
+     */
+    fun removeUpdateListener(updateListener: UpdateListener) {
+        updateListeners.remove(updateListener)
+    }
+
+    private val updateRunnable = object : Runnable {
+        override fun run() {
+            if (state == State.RUNNING) {
+                if (totalTicks % 10 == 0) {
+                    for (listener in updateListeners) {
+                        listener.onUpdate(
+                            totalTicks * UPDATE_INTERVAL,
+                            lapTicks * UPDATE_INTERVAL,
+                            false
+                        )
+                    }
+                }
+                totalTicks++
+                currentTicks++
+                lapTicks++
+                updateHandler.postAtTime(this, uptimeAtStart + currentTicks * UPDATE_INTERVAL)
+            }
+        }
+    }
+
+    enum class State {
+        RUNNING,
+        PAUSED,
+        STOPPED
+    }
+
+    interface UpdateListener {
+        fun onUpdate(totalTime: Long, lapTime: Long, useLongerMSFormat: Boolean)
+        fun onStateChanged(state: State)
+    }
+}

app/src/main/kotlin/com/simplemobiletools/clock/services/StopwatchService.kt

@@ -0,0 +1,116 @@
+package com.simplemobiletools.clock.services
+
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.os.IBinder
+import androidx.core.app.NotificationCompat
+import androidx.core.content.ContextCompat
+import com.simplemobiletools.clock.R
+import com.simplemobiletools.clock.extensions.getFormattedDuration
+import com.simplemobiletools.clock.extensions.getOpenStopwatchTabIntent
+import com.simplemobiletools.clock.helpers.STOPWATCH_RUNNING_NOTIF_ID
+import com.simplemobiletools.clock.helpers.Stopwatch
+import com.simplemobiletools.clock.helpers.Stopwatch.State
+import com.simplemobiletools.clock.helpers.Stopwatch.UpdateListener
+import org.greenrobot.eventbus.EventBus
+import org.greenrobot.eventbus.Subscribe
+import org.greenrobot.eventbus.ThreadMode
+
+class StopwatchService : Service() {
+
+    private val bus = EventBus.getDefault()
+    private lateinit var notificationManager: NotificationManager
+    private lateinit var notificationBuilder: NotificationCompat.Builder
+    private var isStopping = false
+
+    override fun onCreate() {
+        super.onCreate()
+        bus.register(this)
+        notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+        notificationBuilder = getServiceNotificationBuilder(
+            getString(R.string.app_name),
+            getString(R.string.stopwatch)
+        )
+    }
+
+    override fun onBind(intent: Intent?): IBinder? = null
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        super.onStartCommand(intent, flags, startId)
+        isStopping = false
+        startForeground(
+            STOPWATCH_RUNNING_NOTIF_ID,
+            notificationBuilder.build()
+        )
+        Stopwatch.addUpdateListener(updateListener)
+        return START_NOT_STICKY
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        bus.unregister(this)
+        Stopwatch.removeUpdateListener(updateListener)
+    }
+
+    @Subscribe(threadMode = ThreadMode.MAIN)
+    fun onMessageEvent(event: StopwatchStopService) {
+        isStopping = true
+        stopForeground(true)
+    }
+
+    private fun getServiceNotificationBuilder(
+        title: String,
+        contentText: String
+    ): NotificationCompat.Builder {
+        val channelId = "simple_alarm_stopwatch"
+        val label = getString(R.string.stopwatch)
+        val importance = NotificationManager.IMPORTANCE_DEFAULT
+        NotificationChannel(channelId, label, importance).apply {
+            setSound(null, null)
+            notificationManager.createNotificationChannel(this)
+        }
+        return NotificationCompat.Builder(this, channelId)
+            .setContentTitle(title)
+            .setContentText(contentText)
+            .setSmallIcon(R.drawable.ic_stopwatch_vector)
+            .setPriority(NotificationCompat.PRIORITY_DEFAULT)
+            .setSound(null)
+            .setOngoing(true)
+            .setAutoCancel(true)
+            .setContentIntent(getOpenStopwatchTabIntent())
+            .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
+    }
+
+    private fun updateNotification(totalTime: Long) {
+        val formattedDuration = totalTime.getFormattedDuration()
+        notificationBuilder.setContentTitle(formattedDuration)
+            .setContentText(getString(R.string.stopwatch))
+        notificationManager.notify(
+            STOPWATCH_RUNNING_NOTIF_ID,
+            notificationBuilder.build()
+        )
+    }
+
+    private val updateListener = object : UpdateListener {
+        override fun onUpdate(totalTime: Long, lapTime: Long, useLongerMSFormat: Boolean) {
+            if (!isStopping) {
+                updateNotification(totalTime)
+            }
+        }
+
+        override fun onStateChanged(state: State) {
+            if (state == State.STOPPED) {
+                stopForeground(STOP_FOREGROUND_REMOVE)
+            }
+        }
+    }
+}
+
+fun startStopwatchService(context: Context) {
+    ContextCompat.startForegroundService(context, Intent(context, StopwatchService::class.java))
+}
+
+object StopwatchStopService

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

@@ -6,6 +6,7 @@
     <string name="label">Etiket</string>
     <string name="no_days_selected">Gün seçilməyib</string>
     <string name="timer">Sayğac</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Dövrə</string>
     <string name="stopwatch_stopped">Saniyəölçən dayandı</string>
     <string name="timer_stopped">Sayğaç dayandı</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Štítek</string>
     <string name="no_days_selected">Nebyly označeny žádné dny</string>
     <string name="timer">Časovač</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Mezičas</string>
     <string name="stopwatch_stopped">Stopky byly zastaveny</string>
     <string name="timer_stopped">Časovač byl zastaven</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Label</string>
     <string name="no_days_selected">Dim diwrnodau wedi\'u dewis</string>
     <string name="timer">Amserydd</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Lap</string>
     <string name="stopwatch_stopped">Cafodd y stopwats ei stopio</string>
     <string name="timer_stopped">Cafodd yr amserydd ei stopio</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Etiket</string>
     <string name="no_days_selected">Der er ikke valgt nogen dage</string>
     <string name="timer">Æggeur</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Mellemtid</string>
     <string name="stopwatch_stopped">Stopuret er standset</string>
     <string name="timer_stopped">Æggeuret er standset</string>

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

@@ -7,6 +7,7 @@
     <string name="label">Label</string>
     <string name="no_days_selected">Keine Tage ausgewählt</string>
     <string name="timer">Timer</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Runde</string>
     <string name="stopwatch_stopped">Die Stoppuhr wurde angehalten</string>
     <string name="timer_stopped">Der Timer wurde angehalten</string>

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

@@ -7,6 +7,7 @@
     <string name="label">Ετικέτα</string>
     <string name="no_days_selected">Δεν έχουν επιλεγεί ημέρες</string>
     <string name="timer">Χρονόμετρο</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Γύρος</string>
     <string name="stopwatch_stopped">Ο χρονοδιακόπτης σταμάτησε</string>
     <string name="timer_stopped">Το χρονόμετρο σταμάτησε</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Etiqueta</string>
     <string name="no_days_selected">Ningún día seleccionado</string>
     <string name="timer">Temporizador</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Vuelta</string>
     <string name="stopwatch_stopped">El cronómetro s eha detenido</string>
     <string name="timer_stopped">El temporizador se ha detenido</string>

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

@@ -7,6 +7,7 @@
     <string name="label">Silt</string>
     <string name="no_days_selected">Ühtegi päeva pole valitud</string>
     <string name="timer">Taimer</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Ringi aeg</string>
     <string name="stopwatch_stopped">Stopper on kinni</string>
     <string name="timer_stopped">Taimer on peatunud</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Etiketa</string>
     <string name="no_days_selected">Ez duzu egunik hautatu</string>
     <string name="timer">Tenporizagailua</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Bira</string>
     <string name="stopwatch_stopped">Kronometroa gelditu da</string>
     <string name="timer_stopped">Tenporizagailua gelditu da</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Tunniste</string>
     <string name="no_days_selected">Ei päiviä valittuna</string>
     <string name="timer">Ajastin</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Kierrosaika</string>
     <string name="stopwatch_stopped">Sekuntikello pysäytetty</string>
     <string name="timer_stopped">Ajastin on pysäytetty</string>

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

@@ -7,6 +7,7 @@
     <string name="label">Titre</string>
     <string name="no_days_selected">Aucun jour sélectionné</string>
     <string name="timer">Minuterie</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Tour</string>
     <string name="stopwatch_stopped">Chronomètre arrêté</string>
     <string name="timer_stopped">La minuterie a été arrêtée</string>

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

@@ -7,6 +7,7 @@
     <string name="label">Etiqueta</string>
     <string name="no_days_selected">Ningún día seleccionado</string>
     <string name="timer">Temporizador</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Volta</string>
     <string name="stopwatch_stopped">Cronómetro parado</string>
     <string name="timer_stopped">Temporizador parado</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Oznaka</string>
     <string name="no_days_selected">Nije odabran nijedan dan</string>
     <string name="timer">Brojač</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Krug</string>
     <string name="stopwatch_stopped">Štoperica je zaustavljena</string>
     <string name="timer_stopped">Brojač je zaustavljen</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Címke</string>
     <string name="no_days_selected">Nincs nap kiválasztva</string>
     <string name="timer">Időzítő</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Kör</string>
     <string name="stopwatch_stopped">A stopper leállt</string>
     <string name="timer_stopped">Az időzítő leállt</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Label</string>
     <string name="no_days_selected">Tidak ada hari yang dipilih</string>
     <string name="timer">Timer</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Putaran</string>
     <string name="stopwatch_stopped">Stopwatch telah berhenti</string>
     <string name="timer_stopped">Timer telah berhenti</string>

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

@@ -7,6 +7,7 @@
     <string name="label">Etichetta</string>
     <string name="no_days_selected">Nessun giorno selezionato</string>
     <string name="timer">Contaminuti</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Parziale</string>
     <string name="stopwatch_stopped">Il cronometro è stato fermato</string>
     <string name="timer_stopped">Il contaminuti è stato fermato</string>

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

@@ -6,6 +6,7 @@
     <string name="label">ラベル</string>
     <string name="no_days_selected">曜日が選択されていません</string>
     <string name="timer">タイマー</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">ラップ</string>
     <string name="stopwatch_stopped">ストップウォッチが停止しました</string>
     <string name="timer_stopped">タイマーが停止しました</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Etiketė</string>
     <string name="no_days_selected">Nepasirinkta nė vienos dienos</string>
     <string name="timer">Laikmatis</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Etapas</string>
     <string name="stopwatch_stopped">Chronometras buvo sustabdytas</string>
     <string name="timer_stopped">Laikmatis buvo sustabdytas</string>

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

@@ -6,6 +6,7 @@
     <string name="label">അടിക്കുറിപ്പ് </string>
     <string name="no_days_selected">ദിവസങ്ങളൊന്നും തിരഞ്ഞെടുത്തിട്ടില്ല</string>
     <string name="timer">ടൈമർ</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">ലാപ്‌</string>
     <string name="stopwatch_stopped">Stopwatch has been stopped</string>
     <string name="timer_stopped">സ്റ്റോപ്പ് വാച്ച് നിർത്തി</string>

app/src/main/res/values-nb-rNO/strings.xml

@@ -6,6 +6,7 @@
     <string name="label">Påskrift</string>
     <string name="no_days_selected">Ingen dager valgte</string>
     <string name="timer">Timer</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Runde</string>
     <string name="stopwatch_stopped">Stoppeklokke er stoppet</string>
     <string name="timer_stopped">Timer er stoppet</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Label</string>
     <string name="no_days_selected">Geen dagen geselecteerd</string>
     <string name="timer">Timer</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Ronde</string>
     <string name="stopwatch_stopped">Stopwatch is gestopt</string>
     <string name="timer_stopped">Timer is gestopt</string>

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

@@ -7,6 +7,7 @@
     <string name="label">Etykieta</string>
     <string name="no_days_selected">Nie wybrano dni</string>
     <string name="timer">Minutnik</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Okrążenie</string>
     <string name="stopwatch_stopped">Stoper został zatrzymany</string>
     <string name="timer_stopped">Minutnik został zatrzymany</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Legenda</string>
     <string name="no_days_selected">Nenhum dia selecionado</string>
     <string name="timer">Temporizador</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Volta</string>
     <string name="stopwatch_stopped">Cronómetro parado</string>
     <string name="timer_stopped">Temporizador parado</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Etichetă</string>
     <string name="no_days_selected">Nici o zi selectată</string>
     <string name="timer">Temporizator</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">O tură</string>
     <string name="stopwatch_stopped">Cronometrul a fost oprit</string>
     <string name="timer_stopped">Temporizatorul a fost oprit</string>

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

@@ -7,6 +7,7 @@
     <string name="label">Метка</string>
     <string name="no_days_selected">Дни не выбраны</string>
     <string name="timer">Таймер</string>
+    <string name="stopwatch">Секундомер</string>
     <string name="lap">Круг</string>
     <string name="stopwatch_stopped">Секундомер остановлен</string>
     <string name="timer_stopped">Таймер остановлен</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Štítok</string>
     <string name="no_days_selected">Neboli označené žiadne dni</string>
     <string name="timer">Časovač</string>
+    <string name="stopwatch">Stopky</string>
     <string name="lap">Okruh</string>
     <string name="stopwatch_stopped">Stopky boli zastavené</string>
     <string name="timer_stopped">Časovač bol zastavený</string>

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

@@ -7,6 +7,7 @@
     <string name="label">Etikett</string>
     <string name="no_days_selected">Inga dagar har valts</string>
     <string name="timer">Timer</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Varv</string>
     <string name="stopwatch_stopped">Stoppuret har stoppats</string>
     <string name="timer_stopped">Timern har stoppats</string>

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

@@ -7,6 +7,7 @@
     <string name="label">Etiket</string>
     <string name="no_days_selected">Hiçbir gün seçilmedi</string>
     <string name="timer">Zamanlayıcı</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Tur</string>
     <string name="stopwatch_stopped">Kronometre durduruldu</string>
     <string name="timer_stopped">Zamanlayıcı durduruldu</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Мітка</string>
     <string name="no_days_selected">Дні не обрано</string>
     <string name="timer">Таймер</string>
+    <string name="stopwatch">Секундомір</string>
     <string name="lap">Інтервал</string>
     <string name="stopwatch_stopped">Секундомір зупинено</string>
     <string name="timer_stopped">Таймер зупинено</string>

app/src/main/res/values-zh-rCN/strings.xml

@@ -7,6 +7,7 @@
     <string name="label">标签</string>
     <string name="no_days_selected">未选择哪一天</string>
     <string name="timer">定时器</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">分段</string>
     <string name="stopwatch_stopped">秒表已停止</string>
     <string name="timer_stopped">定时器已停止</string>

app/src/main/res/values-zh-rTW/strings.xml

@@ -6,6 +6,7 @@
     <string name="label">標籤</string>
     <string name="no_days_selected">未選擇哪一天</string>
     <string name="timer">計時器</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">分段</string>
     <string name="stopwatch_stopped">碼錶已停止</string>
     <string name="timer_stopped">計時器已停止</string>

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

@@ -6,6 +6,7 @@
     <string name="label">Label</string>
     <string name="no_days_selected">No days selected</string>
     <string name="timer">Timer</string>
+    <string name="stopwatch">Stopwatch</string>
     <string name="lap">Lap</string>
     <string name="stopwatch_stopped">Stopwatch has been stopped</string>
     <string name="timer_stopped">Timer has been stopped</string>