ExifInterface

private void setExifData(String children) {

        // Creating a temporary directory to store the images from SDcard.
        dataFile = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS) + "/temporary"); // Pass getFilesDir() and "MyFile" to read file

        try {
            String dataPath = dataFile.getAbsolutePath() + "/" + children;
            Log.i("inform","datapath is: " + dataPath);
            exifData = new ExifInterface(dataPath);
        } catch (IOException ioE) {
            Log.e("Error", "get path error: " + ioE.getMessage());
        }
        Log.i("inform", "setting attributs" + Double.toString(getLongitude()) );
        exifData.setAttribute(ExifInterface.TAG_GPS_LONGITUDE, Double.toString(getLongitude()));
        exifData.setAttribute(ExifInterface.TAG_GPS_LATITUDE, Double.toString(getLatitude()));
        exifData.setAttribute(ExifInterface.TAG_GPS_ALTITUDE, Double.toString(getAltitude()));
        exifData.setAttribute(ExifInterface.TAG_ARTIST, Double.toString(getUserID()));
        exifData.setAttribute(ExifInterface.TAG_USER_COMMENT,
                "{" +
                "\"UltrasoundHeight\":" + Double.toString(getuHeight()) +
                "\"Direction\":" + Double.toString(getDirection())+
                ",\"Batteri\":" + Double.toString(getBattery()) +
                ",\"maxSpeed\":" + Double.toString(getMaxSpeed()) +
                ",\"Distance\":" + Double.toString(getDistance()) +
                ",\"CameraAngle\":" + Double.toString(getCameraAngle()) +
                "}");

        try {
            exifData.saveAttributes();
        } catch (IOException ioE) {
            Log.e("Error", "could not save Attributes" + ioE.getMessage());
        }

    }