CODEWITHSUNDEEP
androidnativescriptnativescript-angularzebra-printers
Legna
Legna

Reputation: 468

Conect to mini printer ZEBRA iMZ320 and nativescript

I would like to connect a ZEBRA printer in bluetooth insecure mode. I followed the documentation but I cant write.

The firts thing I did was import all .jar libraries needed:

List of folders

In my ticket.component.ts first of all:

declare var com: any

Now, I can access to the .jar, so I try this for print:

ngOnInit() {
    let bluetooth = new Bluetooth()
    bluetooth
      .enable()
      .then(enableb => {
        this.thePrinterConn = new com.zebra.sdk.comm.BluetoothConnectionInsecure(
          "AC:3F:A3:51:D2:12"
        )

        this.thePrinterConn.open()

        // This sends down JSON to the status channel to retrieve the 'appl.name'
        // setting
        let firmwareVersion = new com.zebra.sdk.printer.SGD.GET(
          "appl.name",
          this.thePrinterConn
        )

        console.log("The firmware version is : ", firmwareVersion)

        let str = "^XA^FO20,20^A0N,25,25^FD Works! ZPL^FS^XZ"

        var bytesv2 = [] // char codes

        for (var i = 0; i < str.length; ++i) {
          var code = str.charCodeAt(i)

          bytesv2 = bytesv2.concat([code & 0xff, (code / 256) >>> 0])
        }

        // 72, 0, 101, 0, 108, 0, 108, 0, 111, 0, 220, 122
        console.log("bytesv2", bytesv2)

        // Send the data to printer as a byte array.
        try {
          this.thePrinterConn.write(bytesv2)

          // Make sure the data got to the printer before closing the connection
          setTimeout(() => {
            // Close the insecure connection to release resources.
            console.log("Close")
            this.thePrinterConn.close()
          }, 1000)
        } catch (error) {
          throw error
        }
      })
      .catch(err => {
        console.log(err)
        this.thePrinterConn.close()
      })
  }

But I get this error:

JS: Error: Cannot convert array to Ljava/io/InputStream; at index 0

Docs from zebra

Edit

Apparently works if I convert bytestv2 with this lines:

 var byteArr = Array.create("byte", bytesv2.length)

        let contador = 0
        bytesv2.forEach(x => {
          byteArr[contador] = x
          contador++
        })

Found in nativescript docs

But the printer only feed paper.

Upvotes: 0

Views: 372

Answers (1)

ssizebra
ssizebra

Reputation: 81

Add the LF and CR to the end of ZPL string to ensure the proper ending let str = "^XA^FO20,20^A0N,25,25^FD Works! ZPL^FS^XZ\r\n"

If you only see the paper feed but not the actual print, make sure that printer language is set to ZPL and the media length is set enough to cover the height of the print. ! U1 setvar "device.languages" "zpl" ! U1 setvar "zpl.label_length" "100"

Upvotes: 1

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