Calling js method onCharacteristicWrite failed

[thiamugb]

Hi,
I want to write some data to my characteristics alert like
bluetooth.writeWithoutResponse({
serviceUUID: '1802',
characteristicUUID: '2a06',
peripheralUUID: this.deviceUUID,
value: '0x01'
})

I have an error like " Error: java.lang.NoSuchFieldError: no "Landroid/os/Parcelable$Creator;" field "CREATOR" in class "Landroid/bluetooth/BluetoothGattCharacteristic;" or its superclasses "
Or if i use value : 0x01 i have 'Error in Bluetooth.writeWithoutResponse: Error: Expect integer value as a second argument."
I want to know if someone have the same error.
Need help or issues
Best Regards.

[mtchoy]

Yes, i have the same error with the Android preview app.

[aitch0083]

I also had the same problem when I deployed the app on Android 5.1.1 and tried to write the message to the device. I found the workaround. Find node_modules/nativescript-bluetooth/bluetooth.android.js. Find method onCharacteristicWrite, then change the body of the method to the following:

onCharacteristicWrite: function (bluetoothGatt, bluetoothGattCharacteristic, status) {
    
    if (Bluetooth.characteristicLogging) {
      console.log("------- _MyGattCallback.onCharacteristicWrite");
    }

    var device       = bluetoothGatt.getDevice();
    var sdevice      = device.getAddress();
    var target       = Bluetooth._connections[sdevice];
    var stateObject  = null;
    var ignore_bGatt = android.os.Build.VERSION.SDK_INT < 23 ? true : false;

    if(target.state === 'connecting'){
      stateObject = target;
    } else {
      return;
    }

    if (!stateObject) {
      Bluetooth._disconnect(bluetoothGatt);
      return;
    }

    if (!ignore_bGatt && Bluetooth.characteristicLogging) {
      console.log(bluetoothGattCharacteristic);
    }

    if (stateObject.onWritePromise) {
      stateObject.onWritePromise({
        characteristicUUID: !ignore_bGatt ? bluetoothGattCharacteristic.getUuid() : 'N/A'
      });
    }
  },

The problem is bluetoothGattCharacteristic. For SDK_INT < 23 , bluetoothGattCharacteristic will throw this exception during runtime. It probably needs the team to fix this. I hope this workaround would help you.