CODEWITHSUNDEEP
androidcordovaionic-frameworkprintingbluetooth
Mubashar Abbas
Mubashar Abbas

Reputation: 5673

Ionic Bluetooth printing POS command not working

I am working on this ionic app, and I am printing receipts using a Bluetooth thermal printer using this library.

https://github.com/srehanuddin/Cordova-Plugin-Bluetooth-Printer

I want to cut the paper after printing, because my printer has this feature.

BTPrinter.printPOSCommand(function(data){
    console.log("Success");
    console.log(data)
},function(err){
    console.log("Error");
    console.log(err)
}, "1D")

I have tried 0x1d and "0x1d v 1" but it just doesn't work.

Upvotes: 0

Views: 2164

Answers (1)

Jan Ziesse
Jan Ziesse

Reputation: 469

How exactly have you tried to send that command? Try:

BTPrinter.printPOSCommand(function(data){
    console.log("Success");
    console.log(data)
},function(err){
    console.log("Error");
    console.log(err)
}, "0x1d")

If this doesn't work you can try to edit the plugin itself to add the method but thats a bit more complicated.

In the Bluetoothprint.java file in pluginfolder/src/android try the following:

got to the following method:

 boolean printPOSCommand(CallbackContext callbackContext, byte[] buffer)     throws IOException {
        try {
        //mmOutputStream.write(("Inam").getBytes());
        //mmOutputStream.write((((char)0x0A) + "10 Rehan").getBytes());
        mmOutputStream.write(buffer);
        //mmOutputStream.write(0x0A);

        // tell the user data were sent
        Log.d(LOG_TAG, "Data Sent");
        callbackContext.success("Data Sent");
        return true;
    } catch (Exception e) {
        String errMsg = e.getMessage();
        Log.e(LOG_TAG, errMsg);
        e.printStackTrace();
        callbackContext.error(errMsg);
    }
    return false;
}

change the method attribute byte[] buffer to string buffer and change the line 

 mmOutputStream.write(buffer);

to:

mmOutputStream.write(buffer.getBytes());

Also just to make sure your printer suppports that method you can try to directly put:

mmOutputStream.write(0x1d);

just to test if it works.

EDIT:

Try this byteArray i found:

public static byte[] FEED_PAPER_AND_CUT = {0x1D, 0x56, 66, 0x00};
BTPrinter.printPOSCommand(function(data){
    console.log("Success");
    console.log(data)
},function(err){
    console.log("Error");
    console.log(err)
}, FEED_PAPER_AND_CUT)

Upvotes: 1

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