Fixed a bug that would cause the canteen plan to crash after refreshing while trying to layout the TabMediatorLayout. I don't know why that happened.

app/src/main/java/com/denizk0461/studip/data/StwParser.kt

@@ -1,5 +1,6 @@
 package com.denizk0461.studip.data
 
+import android.util.Log
 import com.denizk0461.studip.db.EventRepository
 import com.denizk0461.studip.model.*
 import org.jsoup.Jsoup
@@ -38,6 +39,7 @@ class StwParser {
             // TODO implement onRefresh(Int)
             parseFromPage(link, Dependencies.repo)
         }
+        onFinish()
     }
 
     private fun parseFromPage(url: String, repo: EventRepository): List<CanteenOffer> {
@@ -58,7 +60,9 @@ class StwParser {
 
             date = "${rawDate[0]}${rawDate[1].monthToNumber()}."
 
-            repo.insert(OfferDate(dateId, date))
+            val d = OfferDate(dateId, date)
+            Log.d("eek!8", d.toString())
+            repo.insert(d)
 
             // STEP: get each category in a day
             dayPlan.getElementsByClass("food-category").forEach { category ->

app/src/main/java/com/denizk0461/studip/db/EventDAO.kt

@@ -66,7 +66,7 @@ interface EventDAO {
     @get:Query("SELECT id FROM offer_date")
     val updateObserver: LiveData<List<Int>>
 
-    @Query("SELECT * FROM offer_date")
+    @Query("SELECT * FROM offer_date ORDER BY id")
     fun getDates(): List<OfferDate>
 
     @Query("DELETE FROM offer_date")

app/src/main/java/com/denizk0461/studip/fragment/CanteenFragment.kt

@@ -72,21 +72,20 @@ class CanteenFragment : Fragment() {
         viewPagerAdapter = CanteenOfferPageAdapter(listOf(), 0, getPrefRegex())
         binding.viewPager.adapter = viewPagerAdapter
 
-        createTabLayoutMediator(listOf())
+        createTabLayoutMediator()
 
-        liveData = viewModel.allOffers
+        viewModel.allOffers.observe(viewLifecycleOwner) { offers ->
-        liveData.observe(viewLifecycleOwner) { offers ->
             elements = offers
 
             val groupedElements = offers.groupElements().distinct()
 
-//            dates = groupedElements.map { it.date }.distinct()
+            val newDates = groupedElements.map { it.date }.distinct()//.map { item -> OfferDate(item.) }
-            val newDates = viewModel.getDates()
+//            val newDates = viewModel.getDates()
-            createTabLayoutMediator(newDates)
 
             dateSize = newDates.size
 
             viewPagerAdapter.setNewItems(groupedElements, dateSize)
+//            createTabLayoutMediator(newDates)
 
             // TODO this must be changed. if an exception is raised, then this will not fire
             binding.swipeRefreshLayout.isRefreshing = false
@@ -97,13 +96,17 @@ class CanteenFragment : Fragment() {
                 // TODO refresh updates
             }, onFinish = {
 //                binding.swipeRefreshLayout.isRefreshing = false
+                createTabLayoutMediator()
             })
         }
     }
 
-    private fun createTabLayoutMediator(dates: List<OfferDate>) {
+    private fun createTabLayoutMediator(){//List<OfferDate>) {
+        val dates = viewModel.getDates()
         if (dates.isNotEmpty()) {
+            Log.d("eek!7", "dates: ${dates}, viewpager pages: ${binding.viewPager.adapter?.itemCount}")
             TabLayoutMediator(binding.dayTabLayout, binding.viewPager) { tab, position ->
+                Log.d("eek!9", position.toString())
                 tab.text = dates[position].date
             }.attach()
         }

app/src/main/java/com/denizk0461/studip/model/DietaryPrefObject.kt

@@ -13,36 +13,38 @@ data class DietaryPrefObject(
     val isGame: Boolean,
 ) {
     companion object {
+        private const val C_TRUE = 't'
+        private const val C_FALSE = '.'
         /* assume that the values must be parsed as follows:
          * "xxxxxxxxxx"
          * t = true, . = false
          */
         fun construct(values: String) = DietaryPrefObject(
-            isFair = values[0] == 't',
+            isFair = values[0] == C_TRUE,
-            isFish = values[1] == 't',
+            isFish = values[1] == C_TRUE,
-            isPoultry = values[2] == 't',
+            isPoultry = values[2] == C_TRUE,
-            isLamb = values[3] == 't',
+            isLamb = values[3] == C_TRUE,
-            isVital = values[4] == 't',
+            isVital = values[4] == C_TRUE,
-            isBeef = values[5] == 't',
+            isBeef = values[5] == C_TRUE,
-            isPork = values[6] == 't',
+            isPork = values[6] == C_TRUE,
-            isVegan = values[7] == 't',
+            isVegan = values[7] == C_TRUE,
-            isVegetarian = values[8] == 't',
+            isVegetarian = values[8] == C_TRUE,
-            isGame = values[9] == 't',
+            isGame = values[9] == C_TRUE,
         )
     }
 
     fun deconstruct() = String(
         charArrayOf(
-            if (this.isFair) 't' else 'f',
+            if (this.isFair) C_TRUE else C_FALSE,
-            if (this.isFish) 't' else 'f',
+            if (this.isFish) C_TRUE else C_FALSE,
-            if (this.isPoultry) 't' else 'f',
+            if (this.isPoultry) C_TRUE else C_FALSE,
-            if (this.isLamb) 't' else 'f',
+            if (this.isLamb) C_TRUE else C_FALSE,
-            if (this.isVital) 't' else 'f',
+            if (this.isVital) C_TRUE else C_FALSE,
-            if (this.isBeef) 't' else 'f',
+            if (this.isBeef) C_TRUE else C_FALSE,
-            if (this.isPork) 't' else 'f',
+            if (this.isPork) C_TRUE else C_FALSE,
-            if (this.isVegan) 't' else 'f',
+            if (this.isVegan) C_TRUE else C_FALSE,
-            if (this.isVegetarian) 't' else 'f',
+            if (this.isVegetarian) C_TRUE else C_FALSE,
-            if (this.isGame) 't' else 'f',
+            if (this.isGame) C_TRUE else C_FALSE,
         )
     )
 }