Behebe Crash bei Auswahl weiterer Techniker

app/src/main/java/com/cyb3rko/techniklogger/fragments/ProjectFragment.kt

@@ -10,7 +10,10 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.CheckedTextView
+import android.widget.TextView
 import androidx.appcompat.app.AlertDialog
+import androidx.core.view.forEach
+import androidx.core.view.forEachIndexed
 import androidx.core.view.get
 import androidx.fragment.app.Fragment
 import androidx.navigation.fragment.navArgs
@@ -20,6 +23,7 @@ import com.cyb3rko.techniklogger.databinding.FragmentProjectBinding
 import com.cyb3rko.techniklogger.recycler.ProjectTechniker
 import com.cyb3rko.techniklogger.recycler.ProjectTechnikerAdapter
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import com.google.android.material.dialog.MaterialDialogs
 import com.google.android.material.timepicker.MaterialTimePicker
 import com.google.android.material.timepicker.TimeFormat
 import com.parse.ParseObject
@@ -375,18 +379,25 @@ class ProjectFragment : Fragment() {
 
                 val checkedNames = mutableListOf<String>()
 
+                val previousSelection = currentSelection.toList()
+
                 MaterialAlertDialogBuilder(myContext)
                     .setMultiChoiceItems(names.toTypedArray(), currentSelection) { dialogInterface, index, isChecked ->
-                        val dialogList = (dialogInterface as AlertDialog).listView
+                        val name = names[index]
-                        val item = dialogList[index] as CheckedTextView
+                        if (previousSelection[index]) {
-
+                            var disabledIndex = -1
-                        if (!item.isEnabled) {
+                            val listView = (dialogInterface as AlertDialog).listView
-                            item.isChecked = true
+                            while (disabledIndex + 1 < names.size && (listView[disabledIndex + 1] as TextView).text != name) {
+                                disabledIndex++
+                            }
+                            if (disabledIndex != -1) (listView[disabledIndex + 1] as CheckedTextView).isChecked = true
                         } else {
                             if (isChecked) {
-                                checkedNames.add(names[index])
+                                if (!checkedNames.contains(name)) {
+                                    checkedNames.add(name)
+                                }
                             } else {
-                                checkedNames.remove(names[index])
+                                checkedNames.remove(name)
                             }
                         }
                     }