I Can't use bluetooth methods.

[avcismail]

Hello everyone,

I include this library in my project, but I cannot use the library methods. I set permissions in AndroidManifest file. Do I need to set permissions for iOS? For example, I am trying to use the isBluetoothEnabled() method, but it falls into the catch block within the try catch structure.

LOG [TypeError: Cannot read property 'isBluetoothEnabled' of null]

My code ise here:

import React, { useState, useEffect } from "react";
   import { AppRegistry, StyleSheet, Text, View, Platform } from "react-native";
   import RNBluetoothClassic, {
   BluetoothEventType,
  BluetoothDevice,
  requestBluetoothEnabled
} from "react-native-bluetooth-classic";


export default function App() {
  const [enabled, setEnabled] = useState(false);
    const [connected, setConnected] = useState(false);
    const [bluetooth, setBluetooth] = useState(false);
    const deviceMac = "0C:B8:15:75:71:6A";
    useEffect(() => {
      checkBluetoothEnabled();
    }, []);

    const checkBluetoothEnabled = async () => {
      try {
        const isEnabled = await RNBluetoothClassic.isBluetoothEnabled();
        const paired = await RNBluetoothClassic.getBondedDevices();

        setEnabled(isEnabled)
    
        console.log("Bluetooth enabled: " + enabled);
        console.log("Bluetooth Connected: " + paired);
      } catch (error) {
        console.log(error);
      }
    };

  return (
    <View style={styles.container}>
      <Text>Bluetooth App</Text>
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: "#fff",
    alignItems: "center",
    justifyContent: "center",
  },
});

AppRegistry.registerComponent("App", () => App);

I've been searching for days but I haven't found any results. Can you help me?

[kenjdavidson]

So on Android it works but ios it doesn't? Sounds like it's hasn't installed properly on ios. Can you try manually running the podspec? Or try reinstalling the library?

[avcismail]

I couldn't run it on Android either. It may be caused by the emulator. I do not have a physical Android device. I reinstalled the library a few times. I even deleted the node_modules folder and did npm install again, but it didn't work. I'll try running podspec manually.

[kenjdavidson]

Not sure to be honest. I've never used the emulator, so I can't guarantee that Bluetooth is available on it.

[kenjdavidson]

I would suggest looking at the Logcat of the Android studio and see if there are any native side errors which would be stopping the NativeModule from loading into Javascript.

[kenjdavidson]

The only major issue is that if React Native finally removed this type of native module. In which case I would suggest reverting to an earlier version of react native as I probably won't get around to converting this to a Turbo module.

[avcismail]

Okay, I hope I can find more error details. Thank you for your help.

[wizzer129]

Hey were you able to discover what was causing this issue for you? I'm experiencing something similar when executing any of the functions in RNBluetoothClassic on my device.

[avcismail]

Hello, no I couldn't find it. So I started using a different package. But I haven't tested the iOS side yet. @wizzer129

[kenjdavidson]

I would open an issue, but it sound slike you've got it working with a different library.