Question

我正在关注Zebra Android Link_OS SDK示例代码，用于通过蓝牙在ZQ510上打印测试标签，但它不会以ZPL格式打印。

以下是我打印标签的代码：

private void sendZplOverBluetooth(final String theBtMacAddress) {

     new Thread(new Runnable() {
         public void run() {
             try {
                 // Instantiate connection for given Bluetooth&reg; MAC Address.
                 Connection thePrinterConn = new BluetoothConnection(theBtMacAddress);

                 // Initialize
                 Looper.prepare();

                 // Open the connection - physical connection is established here.
                 thePrinterConn.open();

                 // This example prints "This is a ZPL test." near the top of the label.
                 String zplData = "^XA^FO20,20^A0N,25,25^FDThis is a ZPL test.^FS^XZ";

                 // Send the data to printer as a byte array.
                 thePrinterConn.write(zplData.getBytes());

                 // Make sure the data got to the printer before closing the connection
                 Thread.sleep(500);

                 // Close the connection to release resources.
                 thePrinterConn.close();

                 Looper.myLooper().quit();
             } catch (Exception e) {
                 // Handle communications error here.
                 e.printStackTrace();
             }
         }
     }).start();
 }

这是打印的结果。（我跑了两次，这就是为什么有两个测试打印）。

然后我读到了它可能处于不同模式的原因，因为由于某些原因，Zebra无法检测到自己的专有语言。所以我尝试了解设置并查看Android应用。再次使用给定的Link-OS SDK示例代码：

private static void displaySettings(Connection c) throws ConnectionException, ZebraPrinterLanguageUnknownException, SettingsException, ZebraIllegalArgumentException {
     ZebraPrinter genericPrinter = ZebraPrinterFactory.getInstance(c);
     ZebraPrinterLinkOs linkOsPrinter = ZebraPrinterFactory.createLinkOsPrinter(genericPrinter);

     if (linkOsPrinter != null) {

         System.out.println("Available Settings for myDevice");
         Set<String> availableSettings = linkOsPrinter.getAvailableSettings();
         for (String setting : availableSettings) {
             System.out.println(setting + ": Range = (" + linkOsPrinter.getSettingRange(setting) + ")");
         }

         System.out.println("\nCurrent Setting Values for myDevice");
         Map<String, String> allSettingValues = linkOsPrinter.getAllSettingValues();
         for (String settingName : allSettingValues.keySet()) {
             System.out.println(settingName + ":" + allSettingValues.get(settingName));
         }

         String darknessSettingId = "print.tone";
         String newDarknessValue = "10.0";
         if (availableSettings.contains(darknessSettingId) &&
                 linkOsPrinter.isSettingValid(darknessSettingId, newDarknessValue) &&
                 linkOsPrinter.isSettingReadOnly(darknessSettingId) == false) {
             linkOsPrinter.setSetting(darknessSettingId, newDarknessValue);
         }

         System.out.println("\nNew " + darknessSettingId + " Value = " + linkOsPrinter.getSettingValue(darknessSettingId));
     }
 }

这一次，我得到一个SettingsException，其中包含Operation cannot be performed on raw channel with a printer set to line print mode

的说明

如何使用Mac打印ZPL文本并正确开发Android？我读到了使用一些Zebra Utility应用程序来更改模式，但它仅适用于Windows，而且他们的Android应用程序无法运行。

无论如何，如果有人在不正确的模式下使用打印机的应用程序，他们将不得不经历所有这些不必要的设置，这对任何人来说都不是直观的。

感谢您的帮助并感谢任何反馈。

Answer 1

您可以通过编程方式将打印模式设置为ZPL，它当前位于line-mode。

这样做：

BluetoothConnection printerIns= new BluetoothConnection(theBtMacAddress);
ZebraPrinter zPrinterIns = ZebraPrinterFactory.getInstance(printerIns);
//Set printer to ZPL mode
zPrinterIns.sendCommand("! U1 setvar \"device.languages\" \"zpl\"\r\n");
//Feed and calibrate to the media
zPrinterIns.sendCommand("~jc^xa^jus^xz");

在您的示例代码中，您正在建立蓝牙连接并尝试发送原始数据，请使用Zebra提供的ZebraPrinter和BluetoothConnection类，而不是com.zebra.sdk.printer命名空间。

我纠正了你的代码，现在应该可以了。

 new Thread(new Runnable() {
         public void run() {
             try {
                 // Instantiate connection for given Bluetooth&reg; MAC Address.
                 BluetoothConnection thePrinterConn = new BluetoothConnection(theBtMacAddress);

                 // Initialize
                 Looper.prepare();

                 // Open the connection - physical connection is established here.
                 ZebraPrinter zPrinterIns = ZebraPrinterFactory.getInstance(thePrinterConn);
                 zPrinterIns.sendCommand("! U1 setvar \"device.languages\" \"zpl\"\r\n");
                 zPrinterIns.sendCommand("~jc^xa^jus^xz");
                 Thread.sleep(500);

                 // Send the data to printer as a byte array.
                 zPrinterIns.sendCommand("^XA^FO20,20^A0N,25,25^FDThis is a ZPL test.^FS^XZ");

                 // Make sure the data got to the printer before closing the connection
                 Thread.sleep(500);

                 // Close the connection to release resources.
                 thePrinterConn.close();

                 Looper.myLooper().quit();
             } catch (Exception e) {
                 // Handle communications error here.
                 e.printStackTrace();
             }
         }
}).start();

Answer 2

如果您不想像 Dayan 答案那样以编程方式执行此步骤，并且您可以访问Windows计算机（或模拟一台），请安装Zebra Setup Utilities。然后按照https://km.zebra.com/kb/index?page=content&id=SO7296中的说明使用命令

将打印模式切换到ZPL

! U1 setvar "device.languages" "zpl"

Zebra打印机不会打印ZPL格式

2 个答案: