1 Reply Latest reply on Mar 17, 2019 1:21 PM by Dmitry Prokhorov

    TC51 Cannot discovery Bluetooth printer ZQ320 pls Help

    Amornsak Kornlikhitpaisarn

      my TC51 using Android API 26


      1. I already added AndroidManifest.xml

      <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
      <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
      <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
      <uses-permission android:name="android.permission.BLUETOOTH"/>


      2. also added code to my activity


      try {

        System.out.println("Looking for Printer");
         BluetoothDiscoverer.findPrinters(BluetoothDiscovery.this, new DiscoveryHandler() {

         public void foundPrinter(DiscoveredPrinter discoveredPrinter) {

        System.out.println("Found Printer");


         public void discoveryFinished() {

        System.out.println("Done Find");


         public void discoveryError(String s) {

        System.out.println("Error Printer "+s);

      } catch (ConnectionException e) {




      Callback work only discoveryFinished


      Cannot find any printer. What else i have to do? i missed something?


      ps. I test with ZebraDemo and it works



      Thank you