Remove defunct collapsed widget header values

app/src/main/java/org/tasks/tasklist/SectionedDataSource.kt

@@ -1,6 +1,7 @@
 package org.tasks.tasklist
 
 import android.util.SparseArray
+import androidx.core.util.forEach
 import com.todoroo.astrid.core.SortHelper
 import org.tasks.data.TaskContainer
 import org.tasks.date.DateTimeUtils
@@ -118,4 +119,10 @@ class SectionedDataSource constructor(
     } else {
         getNearestHeader(sectionedPosition - 1)
     }
+
+    fun getSectionValues(): List<Long> {
+        val values = ArrayList<Long>()
+        sections.forEach { _, header -> values.add(header.value) }
+        return values
+    }
 }

app/src/main/java/org/tasks/widget/ScrollableViewsFactory.kt

@@ -68,6 +68,8 @@ internal class ScrollableViewsFactory(
     private var collapsed = HashSet<Long>()
     private var sortMode = -1
     private var tasks = SectionedDataSource(emptyList(), false, 0, collapsed)
+    private val widgetPreferences = WidgetPreferences(context, preferences, widgetId)
+
     override fun onCreate() {}
 
     override fun onDataSetChanged() {
@@ -79,6 +81,9 @@ internal class ScrollableViewsFactory(
                     sortMode,
                     collapsed
             )
+            if (collapsed.retainAll(tasks.getSectionValues())) {
+                widgetPreferences.collapsed = collapsed
+            }
         }
     }
 
@@ -326,7 +331,6 @@ internal class ScrollableViewsFactory(
     }
 
     private suspend fun updateSettings() {
-        val widgetPreferences = WidgetPreferences(context, preferences, widgetId)
         vPad = widgetPreferences.widgetSpacing
         hPad = context.resources.getDimension(R.dimen.widget_padding).toInt()
         handleDueDateClick = widgetPreferences.rescheduleOnDueDateClick()