just refresh the weekly fragments if events change, dont recreate them

app/src/main/kotlin/com/simplemobiletools/calendar/adapters/MyWeekPagerAdapter.kt

@@ -31,4 +31,10 @@ class MyWeekPagerAdapter(fm: FragmentManager, val mWeekTimestamps: List<Int>, va
         mFragments[pos - 1]?.updateScrollY(y)
         mFragments[pos + 1]?.updateScrollY(y)
     }
+
+    fun updateCalendars(pos: Int) {
+        for (i in -1..1) {
+            mFragments[pos + i]?.updateCalendar()
+        }
+    }
 }

app/src/main/kotlin/com/simplemobiletools/calendar/fragments/WeekFragment.kt

@@ -109,7 +109,7 @@ class WeekFragment : Fragment(), WeeklyCalendar {
     override fun onResume() {
         super.onResume()
         setupDayLabels()
-        mCalendar.updateWeeklyCalendar(mWeekTimestamp)
+        updateCalendar()
 
         mView.week_events_scrollview.viewTreeObserver.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
             override fun onGlobalLayout() {
@@ -140,6 +140,10 @@ class WeekFragment : Fragment(), WeeklyCalendar {
         }
     }
 
+    fun updateCalendar() {
+        mCalendar.updateWeeklyCalendar(mWeekTimestamp)
+    }
+
     private fun setupDayLabels() {
         var curDay = Formatter.getDateTimeFromTS(mWeekTimestamp)
         val textColor = context!!.config.textColor
@@ -233,18 +237,21 @@ class WeekFragment : Fragment(), WeeklyCalendar {
         if (newHash == lastHash) {
             return
         }
+
         lastHash = newHash
         this.events = events
         updateEvents()
     }
 
     private fun updateEvents() {
-        if (mWasDestroyed)
+        if (mWasDestroyed) {
             return
+        }
 
         activity!!.runOnUiThread {
-            if (context != null && isAdded)
+            if (context != null && isAdded) {
                 addEvents()
+            }
         }
     }
 
@@ -443,7 +450,8 @@ class WeekFragment : Fragment(), WeeklyCalendar {
     private fun getColumnWithId(id: Int) = mView.findViewById<ViewGroup>(mRes.getIdentifier("week_column_$id", "id", context!!.packageName))
 
     fun updateScrollY(y: Int) {
-        if (wasFragmentInit)
+        if (wasFragmentInit) {
             mView.week_events_scrollview.scrollY = y
+        }
     }
 }

app/src/main/kotlin/com/simplemobiletools/calendar/fragments/WeekFragmentsHolder.kt

@@ -124,7 +124,8 @@ class WeekFragmentsHolder : MyFragmentHolder(), WeekFragmentListener {
     }
 
     override fun refreshEvents() {
-        setupFragment()
+        val viewPager = weekHolder?.week_view_view_pager
+        (viewPager?.adapter as? MyWeekPagerAdapter)?.updateCalendars(viewPager.currentItem)
     }
 
     override fun shouldGoToTodayBeVisible() = currentWeekTS != thisWeekTS