Issue / Question
Customer use Link-OS SDK demo to printing and encoding via USB driver connection.
When using “ZebraPrinter printer = ZebraPrinterFactory.getInstance(printerConnection);” to get USB connection from driver, it will response after past over than 30 seconds.
Applicable To
Link-OS SDK, Java and C# PC application develop
Resolution / Answer
A workaround way that use “com.zebra.sdk.comm.DriverPrinterConnection” to create connection instead of “ZebraPrinterFactory.getInstance”.
The sample as below.
private void sendAndWaitDate() {
Connection conn = null;
try {
conn = new DriverPrinterConnection("ZDesigner ZD500R-300dpi ZPL");
conn.open();
byte[] zpl = "^XA^FN1^RFR,H,0,12,2^FS^FH_^HV1,256^FS^RFW,H,1,14,1^FD3000313233343536373839414243^FS^XZ".getBytes();
byte[] tid = null;
tid = conn.sendAndWaitForResponse(zpl, 500, 500, null);
DemoDialog.showErrorDialog(SendFileDemo.this, tid.toString(), tid.toString());
} catch (ConnectionException e) {
DemoDialog.showErrorDialog(SendFileDemo.this, e.getMessage(), "Connection Error!");
} finally {
try {
if (conn != null)
conn.close();
} catch (ConnectionException e) {
}
}
}