Android FileIO with Android Writing raw array of bytes


  File myFile = new File(getFilesDir(), "myData.bin");
  FileOutputStream out = new FileOutputStream(myFile);

  // Write four bytes one two three four:
  out.write(new byte [] { 1, 2, 3, 4}

There is nothing Android specific with this code. If you write lots of small values often, use BufferedOutputStream to reduce the wear of the device internal SSD.