add a directory check at renaming
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@ -69,7 +69,7 @@ class RenameDirectoryDialog(val activity: SimpleActivity, val dir: File, val cal
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private fun sendSuccess(updatedFiles: ArrayList<String>, newDir: File) {
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activity.toast(R.string.renaming_folder)
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val files = newDir.listFiles()
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val files = if (newDir.isDirectory) newDir.listFiles() else arrayOf()
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files.mapTo(updatedFiles) { it.absolutePath }
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updatedFiles.add(newDir.absolutePath)
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