Add sort by count.

app/src/main/kotlin/org/fossify/gallery/Constants.kt

@@ -0,0 +1,3 @@
+package org.fossify.gallery
+
+const val SORT_BY_COUNT = 524288 // TODO: Replace with Constants from Commons, then delete this file.

app/src/main/kotlin/org/fossify/gallery/activities/MainActivity.kt

@@ -1094,7 +1094,7 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
                     taken = newDir.taken
                     this@apply.size = newDir.size
                     types = newDir.types
-                    sortValue = getDirectorySortingValue(curMedia, path, name, size)
+                    sortValue = getDirectorySortingValue(curMedia, path, name, size, mediaCnt)
                 }
 
                 setupAdapter(dirs)

app/src/main/kotlin/org/fossify/gallery/dialogs/ChangeSortingDialog.kt

@@ -5,6 +5,7 @@ import org.fossify.commons.activities.BaseSimpleActivity
 import org.fossify.commons.extensions.*
 import org.fossify.commons.helpers.*
 import org.fossify.gallery.R
+import org.fossify.gallery.SORT_BY_COUNT
 import org.fossify.gallery.databinding.DialogChangeSortingBinding
 import org.fossify.gallery.extensions.config
 import org.fossify.gallery.helpers.SHOW_ALL
@@ -22,6 +23,7 @@ class ChangeSortingDialog(
     init {
         currSorting = if (isDirectorySorting) config.directorySorting else config.getFolderSorting(pathToUse)
         binding = DialogChangeSortingBinding.inflate(activity.layoutInflater).apply {
+            sortingDialogRadioNumberOfItems.beVisibleIf(isDirectorySorting)
             sortingDialogOrderDivider.beVisibleIf(showFolderCheckbox || (currSorting and SORT_BY_NAME != 0 || currSorting and SORT_BY_PATH != 0))
 
             sortingDialogNumericSorting.beVisibleIf(showFolderCheckbox && (currSorting and SORT_BY_NAME != 0 || currSorting and SORT_BY_PATH != 0))
@@ -59,6 +61,7 @@ class ChangeSortingDialog(
         val sortBtn = when {
             currSorting and SORT_BY_PATH != 0 -> binding.sortingDialogRadioPath
             currSorting and SORT_BY_SIZE != 0 -> binding.sortingDialogRadioSize
+            currSorting and SORT_BY_COUNT != 0 -> binding.sortingDialogRadioNumberOfItems
             currSorting and SORT_BY_DATE_MODIFIED != 0 -> binding.sortingDialogRadioLastModified
             currSorting and SORT_BY_DATE_TAKEN != 0 -> binding.sortingDialogRadioDateTaken
             currSorting and SORT_BY_RANDOM != 0 -> binding.sortingDialogRadioRandom
@@ -83,6 +86,7 @@ class ChangeSortingDialog(
             R.id.sorting_dialog_radio_name -> SORT_BY_NAME
             R.id.sorting_dialog_radio_path -> SORT_BY_PATH
             R.id.sorting_dialog_radio_size -> SORT_BY_SIZE
+            R.id.sorting_dialog_radio_number_of_items -> SORT_BY_COUNT
             R.id.sorting_dialog_radio_last_modified -> SORT_BY_DATE_MODIFIED
             R.id.sorting_dialog_radio_random -> SORT_BY_RANDOM
             R.id.sorting_dialog_radio_custom -> SORT_BY_CUSTOM

app/src/main/kotlin/org/fossify/gallery/extensions/Context.kt

@@ -37,6 +37,7 @@ import org.fossify.commons.extensions.*
 import org.fossify.commons.helpers.*
 import org.fossify.commons.views.MySquareImageView
 import org.fossify.gallery.R
+import org.fossify.gallery.SORT_BY_COUNT
 import org.fossify.gallery.asynctasks.GetMediaAsynctask
 import org.fossify.gallery.databases.GalleryDatabase
 import org.fossify.gallery.helpers.*
@@ -124,7 +125,7 @@ fun Context.getSortedDirectories(source: ArrayList<Directory>): ArrayList<Direct
         return newDirsOrdered
     }
 
-    dirs.sortWith(Comparator { o1, o2 ->
+    dirs.sortWith { o1, o2 ->
         o1 as Directory
         o2 as Directory
 
@@ -170,6 +171,7 @@ fun Context.getSortedDirectories(source: ArrayList<Directory>): ArrayList<Direct
             )
 
             sorting and SORT_BY_SIZE != 0 -> (o1.sortValue.toLongOrNull() ?: 0).compareTo(o2.sortValue.toLongOrNull() ?: 0)
+            sorting and SORT_BY_COUNT != 0 -> (o1.sortValue.toLongOrNull() ?: 0).compareTo(o2.sortValue.toLongOrNull() ?: 0)
             sorting and SORT_BY_DATE_MODIFIED != 0 -> (o1.sortValue.toLongOrNull() ?: 0).compareTo(o2.sortValue.toLongOrNull() ?: 0)
             else -> (o1.sortValue.toLongOrNull() ?: 0).compareTo(o2.sortValue.toLongOrNull() ?: 0)
         }
@@ -178,7 +180,7 @@ fun Context.getSortedDirectories(source: ArrayList<Directory>): ArrayList<Direct
             result *= -1
         }
         result
-    })
+    }
 
     return movePinnedDirectoriesToFront(dirs)
 }
@@ -1061,16 +1063,18 @@ fun Context.createDirectoryFromMedia(
     val dateTaken = if (isSortingAscending) Math.min(firstItem.taken, lastItem.taken) else Math.max(firstItem.taken, lastItem.taken)
     val size = if (getProperFileSize) curMedia.sumByLong { it.size } else 0L
     val mediaTypes = curMedia.getDirMediaTypes()
-    val sortValue = getDirectorySortingValue(curMedia, path, dirName, size)
+    val count = curMedia.size
+    val sortValue = getDirectorySortingValue(curMedia, path, dirName, size, count)
     return Directory(null, path, thumbnail!!, dirName, curMedia.size, lastModified, dateTaken, size, getPathLocation(path), mediaTypes, sortValue)
 }
 
-fun Context.getDirectorySortingValue(media: ArrayList<Medium>, path: String, name: String, size: Long): String {
+fun Context.getDirectorySortingValue(media: ArrayList<Medium>, path: String, name: String, size: Long, count: Int): String {
     val sorting = config.directorySorting
     val sorted = when {
         sorting and SORT_BY_NAME != 0 -> return name
         sorting and SORT_BY_PATH != 0 -> return path
         sorting and SORT_BY_SIZE != 0 -> return size.toString()
+        sorting and SORT_BY_COUNT != 0 -> return count.toString()
         sorting and SORT_BY_DATE_MODIFIED != 0 -> media.sortedBy { it.modified }
         sorting and SORT_BY_DATE_TAKEN != 0 -> media.sortedBy { it.taken }
         else -> media

app/src/main/res/layout/dialog_change_sorting.xml

@@ -37,6 +37,12 @@
                 android:layout_height="wrap_content"
                 android:text="@string/size" />
 
+            <org.fossify.commons.views.MyCompatRadioButton
+                android:id="@+id/sorting_dialog_radio_number_of_items"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/number_of_items" />
+
             <org.fossify.commons.views.MyCompatRadioButton
                 android:id="@+id/sorting_dialog_radio_last_modified"
                 android:layout_width="match_parent"

app/src/main/res/values/strings.xml

@@ -289,4 +289,7 @@
         Haven't found some strings? There's more at
         https://github.com/FossifyOrg/Commons/tree/master/commons/src/main/res
     -->
+
+    <!-- Replace with strings.xml from Commons, then delete these lines. -->
+    <string name="number_of_items">Number of items</string>
 </resources>