getDirectoryPath static method
This method asynchronously retrieves the application's documents directory path using getApplicationDocumentsDirectory, and then constructs a directory path by concatenating the documents path with the provided dirName. The resulting directory path is returned as a Future-wrapped String.
Implementation
static Future<String> getDirectoryPath(String dirName) async {
final Directory appDocumentsDir = await getApplicationDocumentsDirectory();
String appDocumentsPath = appDocumentsDir.path;
String filePath = path.join(appDocumentsPath, dirName);
return filePath;
}