Hello,
I am trying to print a PDF file on a ZQ521 printer from a native (kotlin) Android app running on Zebra TC26 (Android 10 OS).
I've followed the official documentation and also used https://github.com/ZebraDevs/LinkOS-Android-Samples as a reference, but I am getting an error while checking printer status:
W/System.err: com.zebra.sdk.comm.ConnectionException: Malformed status response - unable to determine printer status
W/System.err: at com.zebra.sdk.printer.internal.PrinterStatusZpl.getPrinterStatus(Unknown Source:65)
W/System.err: at com.zebra.sdk.printer.internal.PrinterStatusZpl.updateStatus(Unknown Source:0)
W/System.err: at com.zebra.sdk.printer.PrinterStatus.getStatusFromPrinter(Unknown Source:4)
W/System.err: at com.zebra.sdk.printer.PrinterStatus.(Unknown Source:22)
W/System.err: at com.zebra.sdk.printer.internal.PrinterStatusZpl.(Unknown Source:0)
W/System.err: at com.zebra.sdk.printer.internal.ZebraPrinterZpl.getCurrentStatus(Unknown Source:4)
I've established a connection between a printer and a mobile device successfully but this error still occurs.
Here is code snippet of my current implementation:
val printer: DiscoveredPrinter = data.first
val file: Uri = data.second.filePath
GlobalScope.launch(Dispatchers.IO) {
try {
object : BluetoothConnection(printer.address) {
override fun open() {
super.open()
val zebraPrinter: ZebraPrinter = ZebraPrinterFactory.getInstance(this)
val isReady: Boolean = checkPrinterStatus(zebraPrinter, file.path)
val scale: String = scalePrint(this, file)
SGD.SET("apl.settings", scale, this);
if (isReady) {
if (!file.path.isNullOrEmpty()) {
zebraPrinter.sendFileContents(file.path)
} else {
logger.d(TAG, "Container label file is empty")
}
} else {
logger.d(TAG,
"Zebra printer is not ready, current status: ${zebraPrinter.currentStatus}")
}
}
}.open()
} catch (ex: ConnectionException) {
logger.e(TAG, ex)
} catch (ex: ZebraPrinterLanguageUnknownException) {
logger.e(TAG, ex)
} finally {
value = Unit
try {
connection?.close()
} catch (ex: ConnectionException) {
logger.e(TAG, ex)
}
}
}
private fun checkPrinterStatus(printer: ZebraPrinter, filePath: String?): Boolean {
if (printer.connection.isConnected) {
try {
val printerStatus: PrinterStatus = printer.currentStatus
if (printerStatus.isReadyToPrint && filePath != null) {
return true
}
} catch (e: ConnectionException) {
e.printStackTrace()
}
}
return false
}
Version of LinkOs: link_os_sdk\android\v2.14.5198
Thanks in advance!