just quickly resort directories at sorting change, when possible

app/src/main/kotlin/com/simplemobiletools/gallery/activities/MainActivity.kt

@@ -19,6 +19,8 @@ import com.google.gson.Gson
 import com.simplemobiletools.commons.dialogs.CreateNewFolderDialog
 import com.simplemobiletools.commons.dialogs.FilePickerDialog
 import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.helpers.SORT_BY_DATE_MODIFIED
+import com.simplemobiletools.commons.helpers.SORT_BY_DATE_TAKEN
 import com.simplemobiletools.commons.models.Release
 import com.simplemobiletools.commons.views.MyScalableRecyclerView
 import com.simplemobiletools.gallery.BuildConfig
@@ -220,7 +222,11 @@ class MainActivity : SimpleActivity(), DirectoryAdapter.DirOperationsListener {
 
     private fun showSortingDialog() {
         ChangeSortingDialog(this, true, false) {
+            if (config.directorySorting and SORT_BY_DATE_MODIFIED > 0 || config.directorySorting and SORT_BY_DATE_TAKEN > 0) {
                 getDirectories()
+            } else {
+                gotDirectories(mDirs, true)
+            }
         }
     }
 
@@ -420,7 +426,9 @@ class MainActivity : SimpleActivity(), DirectoryAdapter.DirOperationsListener {
         }
     }
 
-    private fun gotDirectories(dirs: ArrayList<Directory>, isFromCache: Boolean) {
+    private fun gotDirectories(newDirs: ArrayList<Directory>, isFromCache: Boolean) {
+        val dirs = getSortedDirectories(newDirs)
+
         mLastMediaModified = getLastMediaModified()
         directories_refresh_layout.isRefreshing = false
         mIsGettingDirs = false
@@ -429,8 +437,9 @@ class MainActivity : SimpleActivity(), DirectoryAdapter.DirOperationsListener {
         directories_empty_text.beVisibleIf(dirs.isEmpty() && !isFromCache)
 
         checkLastMediaChanged()
-        if (dirs.hashCode() == mDirs.hashCode())
+        if (dirs.hashCode() == mDirs.hashCode()) {
             return
+        }
 
         mDirs = dirs
 

app/src/main/kotlin/com/simplemobiletools/gallery/asynctasks/GetDirectoriesAsynctask.kt

@@ -77,9 +77,7 @@ class GetDirectoriesAsynctask(val context: Context, val isPickVideo: Boolean, va
             dirs.add(directory)
         }
 
-        Directory.sorting = config.directorySorting
-        dirs.sort()
-        return movePinnedToFront(dirs)
+        return dirs
     }
 
     private fun groupDirectories(media: ArrayList<Medium>): HashMap<String, ArrayList<Medium>> {
@@ -133,16 +131,6 @@ class GetDirectoriesAsynctask(val context: Context, val isPickVideo: Boolean, va
     private fun isThisOrParentExcluded(path: String, excludedPaths: MutableSet<String>, includedPaths: MutableSet<String>) =
             includedPaths.none { path.startsWith(it) } && excludedPaths.any { path.startsWith(it) }
 
-    private fun movePinnedToFront(dirs: ArrayList<Directory>): ArrayList<Directory> {
-        val foundFolders = ArrayList<Directory>()
-        val pinnedFolders = config.pinnedFolders
-
-        dirs.forEach { if (pinnedFolders.contains(it.path)) foundFolders.add(it) }
-        dirs.removeAll(foundFolders)
-        dirs.addAll(0, foundFolders)
-        return dirs
-    }
-
     override fun onPostExecute(dirs: ArrayList<Directory>) {
         super.onPostExecute(dirs)
         callback(dirs)

app/src/main/kotlin/com/simplemobiletools/gallery/dialogs/PickDirectoryDialog.kt

@@ -15,6 +15,7 @@ import com.simplemobiletools.gallery.adapters.DirectoryAdapter
 import com.simplemobiletools.gallery.asynctasks.GetDirectoriesAsynctask
 import com.simplemobiletools.gallery.extensions.config
 import com.simplemobiletools.gallery.extensions.getCachedDirectories
+import com.simplemobiletools.gallery.extensions.getSortedDirectories
 import com.simplemobiletools.gallery.models.Directory
 import kotlinx.android.synthetic.main.dialog_directory_picker.view.*
 
@@ -47,19 +48,20 @@ class PickDirectoryDialog(val activity: SimpleActivity, val sourcePath: String,
         }
     }
 
-    fun showOtherFolder() {
+    private fun showOtherFolder() {
         val showHidden = activity.config.shouldShowHidden
         FilePickerDialog(activity, sourcePath, false, showHidden, true) {
             callback(it)
         }
     }
 
-    private fun gotDirectories(directories: ArrayList<Directory>) {
-        if (directories.hashCode() == shownDirectories.hashCode())
+    private fun gotDirectories(newDirs: ArrayList<Directory>) {
+        val dirs = activity.getSortedDirectories(newDirs)
+        if (dirs.hashCode() == shownDirectories.hashCode())
             return
 
-        shownDirectories = directories
-        val adapter = DirectoryAdapter(activity, directories, null, true) {
+        shownDirectories = dirs
+        val adapter = DirectoryAdapter(activity, dirs, null, true) {
             if (it.path.trimEnd('/') == sourcePath) {
                 activity.toast(R.string.source_and_destination_same)
                 return@DirectoryAdapter

app/src/main/kotlin/com/simplemobiletools/gallery/extensions/context.kt

@@ -17,6 +17,7 @@ import com.simplemobiletools.commons.helpers.SORT_BY_SIZE
 import com.simplemobiletools.commons.helpers.SORT_DESCENDING
 import com.simplemobiletools.gallery.activities.SettingsActivity
 import com.simplemobiletools.gallery.helpers.*
+import com.simplemobiletools.gallery.models.Directory
 import com.simplemobiletools.gallery.models.Medium
 import java.io.File
 
@@ -289,3 +290,21 @@ fun Context.getLastMediaModified(): Int {
     }
     return 0
 }
+
+fun Context.movePinnedDirectoriesToFront(dirs: ArrayList<Directory>): ArrayList<Directory> {
+    val foundFolders = ArrayList<Directory>()
+    val pinnedFolders = config.pinnedFolders
+
+    dirs.forEach { if (pinnedFolders.contains(it.path)) foundFolders.add(it) }
+    dirs.removeAll(foundFolders)
+    dirs.addAll(0, foundFolders)
+    return dirs
+}
+
+@Suppress("UNCHECKED_CAST")
+fun Context.getSortedDirectories(source: ArrayList<Directory>): ArrayList<Directory> {
+    Directory.sorting = config.directorySorting
+    val dirs = source.clone() as ArrayList<Directory>
+    dirs.sort()
+    return movePinnedDirectoriesToFront(dirs)
+}