Unable to connect device

Question

Unable to connect device

CorentinHeroux opened this issue 3 years ago · comments

This code always returns "Unable to connect device" no matter what device is used (Android 5, 8, 10).
The address sent is the correct one (returned by pairedDevices()).
Zebra ZD421 printer

let deviceAddress = '00:07:4D:BD:27:2E';
RNZebraBluetoothPrinter.connectDevice(deviceAddress)
    .then((res) => { 
        console.log(res);
    })
    .catch((error) => console.log(error.message));

Has anyone experienced this problem or seen how to solve it ? Thanks

CorentinHeroux commented 3 years ago

Yes

Anmol jain · Answer 1 · Thu Sep 02 2021 14:26:22 GMT+0800 (China Standard Time)

@CorentinHeroux , is it happening in both Android and iOS?

timnode · Answer 2 · Tue Sep 14 2021 16:24:27 GMT+0800 (China Standard Time)

I think I have the same problem. My device is ZD420.

I can find the address from paired list, but receive "Unable to connect device" when calling connectDevice.

The error logs in java are below

java.io.IOException: read failed, socket might closed or timeout, read ret: -1
at android.bluetooth.BluetoothSocket.readAll(BluetoothSocket.java:762)
at android.bluetooth.BluetoothSocket.waitSocketSignal(BluetoothSocket.java:715)
at android.bluetooth.BluetoothSocket.connect(BluetoothSocket.java:404)
at com.zebrabluetoothprinter.BluetoothService$ConnectedThread.run(BluetoothService.java:184)

timnode · Answer 3 · Wed Sep 15 2021 13:54:56 GMT+0800 (China Standard Time)

I found the reason of my problem, it was because connectDevice seemed to not support ZD420 Bluetooth LE. Finally, I solved it by using import com.zebra.sdk.btleComm.BluetoothLeConnection to make connection.

I think I have the same problem. My device is ZD420.

I can find the address from paired list, but receive "Unable to connect device" when calling connectDevice.

The error logs in java are below

java.io.IOException: read failed, socket might closed or timeout, read ret: -1
at android.bluetooth.BluetoothSocket.readAll(BluetoothSocket.java:762)
at android.bluetooth.BluetoothSocket.waitSocketSignal(BluetoothSocket.java:715)
at android.bluetooth.BluetoothSocket.connect(BluetoothSocket.java:404)
at com.zebrabluetoothprinter.BluetoothService$ConnectedThread.run(BluetoothService.java:184)

shivamb-private · Answer 4 · Sat Sep 18 2021 22:11:20 GMT+0800 (China Standard Time)

@timnode Hey I am trying to connect with the same printer. Can you elaborate on how you went about it? Would really appreciate.

timnode · Answer 5 · Sat Sep 18 2021 23:07:37 GMT+0800 (China Standard Time)

@timnode Hey I am trying to connect with the same printer. Can you elaborate on how you went about it? Would really appreciate.

You may refer to https://github.com/ararog/react-native-zebra-printer/blob/master/android/src/main/java/com/cyclelution/RCTZebraBTPrinter/RCTZebraBTPrinterModule.java