fix #168, show an error if file/folder creation fails for whatever reason

Author: tibbi

app/src/main/kotlin/com/simplemobiletools/filemanager/dialogs/CreateNewItemDialog.kt

@@ -50,7 +50,7 @@ class CreateNewItemDialog(val activity: BaseSimpleActivity, val path: String, va
 
     private fun createDirectory(path: String, alertDialog: AlertDialog, callback: (Boolean) -> Unit) {
         when {
-            activity.needsStupidWritePermissions(this.path) -> activity.handleSAFDialog(path) {
+            activity.needsStupidWritePermissions(path) -> activity.handleSAFDialog(path) {
                 val documentFile = activity.getDocumentFile(path.getParentPath())
                 if (documentFile == null) {
                     val error = String.format(activity.getString(R.string.could_not_create_folder), path)

app/src/main/kotlin/com/simplemobiletools/filemanager/fragments/ItemsFragment.kt

@@ -253,6 +253,8 @@ class ItemsFragment : Fragment(), ItemOperationsListener, Breadcrumbs.Breadcrumb
         CreateNewItemDialog(activity as SimpleActivity, currentPath) {
             if (it) {
                 refreshItems()
+            } else {
+                activity?.toast(R.string.unknown_error_occurred)
             }
         }
     }