Write a string to a file

Question

I want to write something to a file. I found this code:

private void writeToFile(String data) {
    try {
        OutputStreamWriter outputStreamWriter = new Ou         


        

Answer 1

This Method takes File name & data String as Input and dumps them in a folder on SD card. You can change Name of the folder if you want.

The return type is Boolean depending upon Success or failure of the FileOperation.

Important Note: Try to do it in Async Task as FIle IO make cause ANR on Main Thread.

 public boolean writeToFile(String dataToWrite, String fileName) {

            String directoryPath =
                    Environment.getExternalStorageDirectory()
                            + File.separator
                            + "LOGS"
                            + File.separator;

            Log.d(TAG, "Dumping " + fileName +" At : "+directoryPath);

            // Create the fileDirectory.
            File fileDirectory = new File(directoryPath);

            // Make sure the directoryPath directory exists.
            if (!fileDirectory.exists()) {

                // Make it, if it doesn't exist
                if (fileDirectory.mkdirs()) {
                    // Created DIR
                    Log.i(TAG, "Log Directory Created Trying to Dump Logs");
                } else {
                    // FAILED
                    Log.e(TAG, "Error: Failed to Create Log Directory");
                    return false;
                }
            } else {
                Log.i(TAG, "Log Directory Exist Trying to Dump Logs");
            }

            try {
                // Create FIle Objec which I need to write
                File fileToWrite = new File(directoryPath, fileName + ".txt");

                // ry to create FIle on card
                if (fileToWrite.createNewFile()) {
                    //Create a stream to file path
                    FileOutputStream outPutStream = new FileOutputStream(fileToWrite);
                    //Create Writer to write STream to file Path
                    OutputStreamWriter outPutStreamWriter = new OutputStreamWriter(outPutStream);
                    // Stream Byte Data to the file
                    outPutStreamWriter.append(dataToWrite);
                    //Close Writer
                    outPutStreamWriter.close();
                    //Clear Stream
                    outPutStream.flush();
                    //Terminate STream
                    outPutStream.close();
                    return true;
                } else {
                    Log.e(TAG, "Error: Failed to Create Log File");
                    return false;
                }

            } catch (IOException e) {
                Log.e("Exception", "Error: File write failed: " + e.toString());
                e.fillInStackTrace();
                return false;
            }
        }