add a helper function for reseting stopwatch

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

@@ -42,17 +42,7 @@ class StopwatchFragment : Fragment() {
             }
 
             stopwatch_reset.setOnClickListener {
-                updateHandler.removeCallbacksAndMessages(null)
+                resetStopwatch()
-                isRunning = false
-                currentTicks = 0
-                totalTicks = 0
-                currentLap = 0
-                lapTicks = 0
-                laps.clear()
-                stopwatch_reset.beGone()
-                stopwatch_lap.beGone()
-                stopwatch_time.text = 0L.formatStopwatchTime(false)
-                updateIcons()
             }
 
             stopwatch_lap.setOnClickListener {
@@ -118,6 +108,23 @@ class StopwatchFragment : Fragment() {
         view.stopwatch_time.text = (totalTicks * UPDATE_INTERVAL).formatStopwatchTime(false)
     }
 
+    private fun resetStopwatch() {
+        updateHandler.removeCallbacksAndMessages(null)
+        isRunning = false
+        currentTicks = 0
+        totalTicks = 0
+        currentLap = 0
+        lapTicks = 0
+        laps.clear()
+        updateIcons()
+
+        view.apply {
+            stopwatch_reset.beGone()
+            stopwatch_lap.beGone()
+            stopwatch_time.text = 0L.formatStopwatchTime(false)
+        }
+    }
+
     private val updateRunnable = object : Runnable {
         override fun run() {
             if (isRunning) {