Write file on internal storage

private fun writeFileOnInternalStorage(mcoContext: Context, sFileName: String?, sBody: String?) {
	val dir = File(mcoContext.getFilesDir(), "mydir")
	if (!dir.exists()) {
		dir.mkdir()
	}
	try {
		val gpxfile = File(dir, sFileName)
		val writer = FileWriter(gpxfile)
		writer.append(sBody)
		writer.flush()
		writer.close()
	} catch (e: Exception) {
		e.printStackTrace()
	}
}