How can I print an image on a Bluetooth printer in Android?

by

I solve it converting Bitmap to Byte array. Remember that your image must be black & white format.

For full source code:
https://github.com/imrankst1221/Thermal-Printer-in-Android

enter image description here

 public void printPhoto() {
        try {
            Bitmap bmp = BitmapFactory.decodeResource(getResources(),
                    R.drawable.img);
            if(bmp!=null){
                byte[] command = Utils.decodeBitmap(bmp);
                printText(command);
            }else{
                Log.e("Print Photo error", "the file isn't exists");
            }
        } catch (Exception e) {
            e.printStackTrace();
            Log.e("PrintTools", "the file isn't exists");
        }
    }

More Related Contents:

  1. How can I pass a Bitmap object from one activity to another
  2. converting Java bitmap to byte array
  3. bitmap size exceeds Vm budget error android
  4. Android load from URL to Bitmap
  5. BitmapFactory.decodeResource returns a mutable Bitmap in Android 2.2 and an immutable Bitmap in Android 1.6
  6. How to change a bitmap’s opacity?
  7. how to save bitmap to android gallery
  8. Recycle ImageView’s Bitmap
  9. Android – Bitmap cache takes a lot of memory
  10. Image Orientation – Android
  11. Android : save a Bitmap to bmp file format
  12. Create a Bitmap/Drawable from file path
  13. BitmapFactory.decodeStream returning null when options are set
  14. Pixel-Perfect Collision Detection Android
  15. How I can convert a bitmap into PDF format in android [closed]
  16. PorterduffXfermode: Clear a section of a bitmap
  17. Read an Image/file from External storage Android
  18. How to load tiles from a large bitmap in Android?
  19. Why does my app crash in the emulator?
  20. Can’t get download url from Firebase Storge in Android [duplicate]
  21. Parsing ksoap2 response
  22. Custom Progress Bar in Android? [closed]
  23. Why do we have to call super in Android sometimes?
  24. Get button coordinates and detect if finger is over them – Android
  25. Android Java UTF-8 HttpClient Problem
  26. How to test if a JSONObject is null or doesn’t exist
  27. Transparent status bar – before Android 4.4 (KitKat)
  28. stringByEvaluatingJavascriptFromString (iOS method, what is Android equivalent?)
  29. java.lang.SecurityException: attempting to read gservices without permission
  30. How to execute web request in its own thread?

Leave a Comment