Further error handling. Also given the user the option to colour dietary preference icons. Colours have partially been derived from those used on stw-bremen.de but have all been processed through the theme builder on m3.material.io

app/src/main/java/com/denizk0461/studip/viewmodel/CanteenPageViewModel.kt

@@ -30,4 +30,11 @@ class CanteenPageViewModel(app: Application) : AppViewModel(app) {
      */
     val preferenceAllergen: Boolean
         get() = repo.getBooleanPreference(SettingsPreferences.ALLERGEN, defaultValue = true)
+
+    /**
+     * This value determines which canteen the user has selected.
+     */
+    var preferenceColour: Boolean
+        get() = repo.getBooleanPreference(SettingsPreferences.COLOUR_PREFS)
+        set(newValue) { repo.setPreference(SettingsPreferences.COLOUR_PREFS, newValue) }
 }

app/src/main/java/com/denizk0461/studip/viewmodel/FetcherViewModel.kt

@@ -2,6 +2,8 @@ package com.denizk0461.studip.viewmodel
 
 import android.app.Application
 import com.denizk0461.studip.data.StudIPParser
+import java.io.IOException
+import kotlin.jvm.Throws
 
 /**
  * View model for [com.denizk0461.studip.activity.FetcherActivity]
@@ -10,7 +12,20 @@ import com.denizk0461.studip.data.StudIPParser
  */
 class FetcherViewModel(app: Application) : AppViewModel(app) {
 
+    /**
+     * Instance of the parser used to fetch and parse the user's Stud.IP schedule.
+     */
     private val parser: StudIPParser = StudIPParser(app)
 
-    fun parse(html: String) { doAsync { parser.parse(html, {}) }}
+    /**
+     * Fetches and parses the user's Stud.IP schedule.
+     *
+     * @param html  source code of the schedule website
+     */
+    @Throws(IOException::class)
+    fun parse(html: String) {
+        doAsync {
+            parser.parse(html)
+        }
+    }
 }

app/src/main/java/com/denizk0461/studip/viewmodel/SettingsViewModel.kt

@@ -70,6 +70,13 @@ class SettingsViewModel(app: Application) : AppViewModel(app) {
         get() = repo.getBooleanPreference(SettingsPreferences.LAUNCH_CANTEEN_ON_START)
         set(newValue) { repo.setPreference(SettingsPreferences.LAUNCH_CANTEEN_ON_START, newValue) }
 
+    /**
+     * This value determines which canteen the user has selected.
+     */
+    var preferenceColour: Boolean
+        get() = repo.getBooleanPreference(SettingsPreferences.COLOUR_PREFS)
+        set(newValue) { repo.setPreference(SettingsPreferences.COLOUR_PREFS, newValue) }
+
     /**
      * This value determines whether the user opts into submitting crash reports.
      */