I am using ZSDK_ANDROID_API.jar file. I tried the below code to Print data using USB Connection. It sends the signal to Zebra using the USB connection, However, the Printer prints empty page and getting the error - Could not disconnect from device: USB Connection failed to release. Please advise.
Code link - http://techdocs.zebra.com/link-os/2-14/android/
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100 , bos);
byte[] bitmapData = bos.toByteArray();
ByteArrayInputStream bs = new ByteArrayInputStream(bitmapData);
try {
conn = discoveredPrinterUsb.getConnection();
conn.open();
//conn.write("~WC".getBytes());
conn.write(bs);
} catch (ConnectionException e) {
Toast.makeText(getApplicationContext(), e.getMessage() + e.getLocalizedMessage(), Toast.LENGTH_LONG).show();
} finally {
if (conn != null) {
try {
conn.close();
} catch (ConnectionException e) {
e.printStackTrace();
}
}
}
} else {
Toast.makeText(getApplicationContext(), "No permission to communicate", Toast.LENGTH_LONG).show();
}