Internal/External (Android)

//Storeing to asset/raw folder: not possible, you cannot modify your resources or assets after compile time. Store the file to the sdcard //Create a new folder in SD Card //First check if the sd card is mounted or not if (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)) { // sd card mounted Log.d("SDCard", "SDcard is present"); } String folderName = "Images/"; //depend on you. File folder = new File(Environment.getExternalStorageDirectory() + File.separator + folderName"); String dicRectoryPath = folder.getAbsolutePath(); if(!folder.exists()) { folder.mkdirs(); //Creates the directory named by this abstract pathname Log.d("SDcard", "Folder created"); } else { Log.d("SDCard", "Folder already exists"); } String content = "hello world"; FileOutputStream outputStream; try { outputStream = new FileOutputStream(dicRectoryPath + "nameofyourfile"); outputStream.write(content.getBytes()); outputStream.close(); } catch (IOException e) { e.printStackTrace(); } //Note /* You can try Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS) instead of Environment.getExternalStorageDirectory() to save the file in the Downloads directory of your external storage. - getExternalStoragePublicDirectory(String type) requires one of these strings: DIRECTORY_MUSIC, DIRECTORY_PODCASTS, DIRECTORY_RINGTONES, DIRECTORY_ALARMS, DIRECTORY_NOTIFICATIONS, DIRECTORY_PICTURES, DIRECTORY_MOVIES, DIRECTORY_DOWNLOADS, or DIRECTORY_DCIM. May not be null. Don't forget to add Permissions for writing to external storage Whenever you want to access files on the external storage you need permissions to do so. Add this permissions to your manifest file: <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> */ //You should try to use "ShowDialog" to let users know when the process finished.