Not working listeners

[ssshopyak]

const Ibeacon = () => {
const linkvalue = items.location.identifiers.map(({ value }) => value)
const [loaded, setLoaded] = useState(true)

const requestLocationPermission = async () => {
  try {
    const granted = await PermissionsAndroid.request(
      PermissionsAndroid.PERMISSIONS.ACCESS_FINE_LOCATION,
      {
        title: 'Location Permission',
        message:
          'This example app needs to access your location in order to use bluetooth beacons.',
        buttonNeutral: 'Ask Me Later',
        buttonNegative: 'Cancel',
        buttonPositive: 'OK',
      }
    );
    if (granted === PermissionsAndroid.RESULTS.GRANTED) {
      return true;
    } else {
      // permission denied
      return false;
    }
  } catch (err) {
    console.warn(err);
    return false;
  }
};

const beaconSetup = async () => {
  if (isAndroid) {
    // Android
    const granted = await requestLocationPermission()
    if (granted) {
      await connect()
      await startScanning()
      console.log('finding')
    } else {
      Alert.alert(
        'Permission error',
        'Location permission not granted. Cannot scan for beacons',
        [{ text: 'OK', onPress: () => console.log('OK Pressed') }],
        { cancelable: false },
      )
    }
  } else {
    // iOS
    await init()
    await startRangingBeaconsInRegion()
  }

  // Add beacon listener
  if (isAndroid) {
    DeviceEventEmitter.addListener(
      'beaconsDidUpdate',
      ({ beacons, region }) => {
        console.log('beaconsDidUpdate', beacons, region)
        //setBeacons(beacons)
        console.log(beacons[0].uuid)
        console.log('ANDROID DISCOVERED BEACON')
        if (linkvalue.includes(beacons[0].uuid)) {
          console.log('true')
          if (items.state === 'available' && loaded) {
            api
              .post('events/subtask_started', {
                id: items.id,
              })
              .finally(() => {
                setLoaded(false)
                setIdentVisible(false)
                setBeaconVisible(false)
                stopScanning()
                getSubtask()
              })
          }
        } else {
          onToggleSnackBar('Beacon UUID неправильный')
        }
      },
    )
  } else {
    kontaktEmitter.addListener('didRangeBeacons', ({ beacons, region }) => {
      console.log('didRangeBeacons', beacons)
      console.log('IOS DISCOVERED BEACON')
      if (linkvalue.includes(beacons[0].uuid)) {
        console.log('true')
        if (items.state === 'available' && loaded) {
          api
            .post('events/subtask_started', {
              id: items.id,
            })
            .finally(() => {
              setLoaded(false)
              stopRangingBeaconsInRegion()
              setIdentVisible(false)
              setBeaconVisible(false)
              getSubtask()
            })
        }
      } else {
        onToggleSnackBar('Beacon UUID неправильный')
      }
    })
  }
}
useEffect(() => {
  Promise.resolve().then(beaconSetup);

return () => {
  // remove event listeners
  if (isAndroid) {
    kontaktEmitter.removeAllListeners('beaconsDidUpdate');
  } else {
    kontaktEmitter.removeAllListeners('didDiscoverDevices');
    kontaktEmitter.removeAllListeners('didRangeBeacons');
  }
};
}, [])

Its my code when it was on 3.1.0 version all works only on 7 android, but not on 12. Now after update to 4.0.0 its not working on 7 and 12 all permisions is allowed. It`s very important for me please may someone help me? also RN: 0.69.5

[JonasWho]

Can you post your manifest file as well?

[ssshopyak]

not actually. switched to react-native-beacon-manager

[yhanssens]

Got the same problem. Here's my manifest.

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="my.projects.package">

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
    <uses-permission android:name="com.google.android.gms.permission.AD_ID"/>

    <application
      android:name=".MainApplication"
      android:label="@string/app_name"
      android:icon="@mipmap/ic_launcher"
      android:roundIcon="@mipmap/ic_launcher_round"
      android:allowBackup="false"
      android:theme="@style/AppTheme">
      <activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|screenSize|smallestScreenSize|uiMode"
        android:screenOrientation="portrait"
        android:launchMode="singleTask"
        android:windowSoftInputMode="adjustResize"
        android:exported="true">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
      </activity>
      <service android:name="com.kontakt.sdk.android.ble.service.ProximityService" android:exported="false"/>
    </application>
</manifest>

[JonasWho]

My best guess is that you need to add these permissions (or some of them):

    <uses-permission android:name="android.permission.BLUETOOTH" android:maxSdkVersion="30" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" android:maxSdkVersion="30" />
    <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
    <uses-permission android:name="android.permission.BLUETOOTH_CONNECT"/>

[yhanssens]

I have tried that before, without result unfortunately. But I'll give it another go, thanks!

[gladiuscode]

Hi all! First of all, thank you for this amazing library, on iOS it is working smoothly.

I've got the same issues on android tho, scanning listeners are not working. The only strange error that I can see popping up in my Logcat is the following one:

unable to parse scan record: [30, 3, 18, -94, 77, 46, -2, 20, 72, -114, -109, -46, 23, 60, -3, 2, 48, -128, -53, -38, -100, -92, -122, -100, 82, 28, 64, 0, 0, 0, 0]
2022-12-07 11:43:52.406  5358-6644  ScanRecord              pid-5358                             E  unable to parse scan record: [30, 3, 18, -94, 77, 46, -2, 20, 72, -114, -109, -46, 23, 60, -3, 2, 48, -128, -53, -38, -100, -92, -122, -100, 82, 28, 64, 0, 0, 0, 0]
2022-12-07 11:43:52.406  5358-6644  ScanRecord              pid-5358                             E  unable to parse scan record: [30, 3, 18, -94, 77, 46, -2, 20, 72, -114, -109, -46, 23, 60, -3, 2, 48, -128, -53, -38, -100, -92, -122, -100, 82, 28, 64, 0, 0, 0, 0]
2022-12-07 11:43:52.406  7119-7197  BluetoothServiceJni     pid-7119                             E  An exception was thrown by callback 'btgattc_scan_result_cb'.
2022-12-07 11:43:52.407  7119-7197  BluetoothServiceJni     pid-7119                             E  java.lang.ArrayIndexOutOfBoundsException: length=31; index=31
                                                                                                     at com.android.bluetooth.gatt.GattService.parseUuids(GattService.java:3746)
                                                                                                     at com.android.bluetooth.gatt.GattService.onScanResult(GattService.java:1137)

Information:

1. react-native version 0.67.5;
2. react-native-kontaktio version latest;

Targets configuration:

minSdkVersion = 23
compileSdkVersion = 33
targetSdkVersion = 33

Android Manifest:

1. Proximity service added inside <application tag: <service android:name="com.kontakt.sdk.android.ble.service.ProximityService" android:exported="false"/>

2. Permissions:

   <uses-permission android:name="android.permission.BLUETOOTH" android:maxSdkVersion="30"/>
   <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" android:maxSdkVersion="30"/>
   <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
   <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
   
   <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
   <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
   <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />

I've also followed Kontaktio quick setup guide, so I've added their sdk as a dependency: implementation "io.kontakt.mvn:sdk:7.0.12.1"

I'm using Beacons Simulator app to emulate a bunch of beacons (IBeacons) and it is installed in another device, different from the one i'm developing on.

I've tried in my App.tsx, after all permissions requests granted through react-native-permissions, with the following setup:

useEffect(() => {
    const testBeacons = async () => {
      try {
        await Kontakt.connect();
        await Kontakt.startScanning();
        DeviceEventEmitter.addListener('beaconInitStatus', params => console.log('[Beacons] [initStatus] - params: ', params));
        DeviceEventEmitter.addListener('scanStatus', params => console.log('[Beacons] [scanStatus] - params: ', params));
        DeviceEventEmitter.addListener('beaconDidAppear', params => console.log('[Beacons] [beaconDidAppear] - params: ', params));
        DeviceEventEmitter.addListener('beaconsDidAppear', params => console.log('[Beacons] [beaconsDidUpdate] - params: ', params));
      } catch (error) {
        console.log('[Beacons] [testBeacons] - error: ', error);
      }
    }
    testBeacons();
  }, []);

Let me know if you need anything else, i'll gladly help, unfortunately my knowledge with native side is limited.

Thanks!

[Malin88]

Similar issue here. I have created demo from README minimal setup instructions and no listeners works. I also used the code from gladiuscode nad here is the result:

 LOG  [Beacons] [scanStatus] - params:  {"status": "START"}
 LOG  [Beacons] [scanStatus] - params:  {"status": "ERROR"}
 LOG  [Beacons] [scanStatus] - params:  {"status": "STOP"}

EDIT: end this is errror: com.kontakt.sdk.android.ble.exception.ScanError@f9eb529

Android version 13

[claudiumatei]

For Android 12+ you must ask following permissions in order to make it work (if compileSDKVersion is 31 or higher): Manifest.permission.BLUETOOTH_SCAN, Manifest.permission.BLUETOOTH_CONNECT, Manifest.permission.ACCESS_FINE_LOCATION

After asking these permissions things are working as expected on latest version of the library

[nickoliveira23]

It worked for me. For Android 12+ you just need to add to you manifest the permissions like that:

`

`

Beyond that, in your code, I recommend you to handle the BLUETOOTH_SCAN and BLUETOOTH_CONNECT, they're only for SDK 31+ so you only ask for these permissions after check that the current SDK is >= 31 (You can use Platform.Version to do it). If the current SDK you are workin on is less than 31, you keep asking only for ACCESS_FINE_LOCATION. (Remember to check in your device if both Bluetooth and Location are enabled).