My location indicator doesn’t appear after location permissions granted

[petemusicpancake]

Hi! Thank you for a great library. Fully migrated it into my app and replaced unstable react native maps.
The only issue I have right now is: default blue location marker doesn’t appear after user granted location permissions (android only). Maybe I am missing something?

i requested permissions using ref.current.requestLocationPermissions

[pinpong]

Hi, great to hear that you like this library. I tested it with the example app and it works as expected (Basic Map Example). After granting the permission, it can take a while until the map receives the location. Check your locationConfig, that might be the issue. If you want to follow or display the current position, you need to set the camera to the new coordinates provided in onLocationUpdate. If I’m wrong, please provide me with an example.

[petropentsak]

Hi, great to hear that you like this library. I tested it with the example app and it works as expected (Basic Map Example). After granting the permission, it can take a while until the map receives the location. Check your locationConfig, that might be the issue. If you want to follow or display the current position, you need to set the camera to the new coordinates provided in onLocationUpdate. If I’m wrong, please provide me with an example.

Thanks for a quick reply.
So here is my code:

const findMe = async () => {
    if (isFindingMe.current) return

    isFindingMe.current = true

    try {
      const {granted} = await requestForegroundPermissionsAsync()

      setOpenLocationPermissionsModal(!granted)
      if (!granted) return

      const position = await getCurrentLocationFasterResult()
      if (!position) return

      const myLocation = {
        latitude: position.coords.latitude,
        longitude: position.coords.longitude,
      }

      await fitLocationWithNearbyMarkers(myLocation)
    } finally {
      isFindingMe.current = false
}

const requestForegroundPermissionsAsync = useCallback(async () => {
    try {
      const permissions = await map.current?.requestLocationPermission()

      const granted = Platform.select({
        ios: permissions?.ios === RNIOSPermissionResult.AUTHORIZED,
        android: permissions?.android === RNAndroidLocationPermissionResult.GRANTED,
      })

      return {granted}
    } catch (err) {
      return {granted: false}
    }
}, [])

export const locationConfig: RNLocationConfig = {
  android: {
    priority: RNAndroidLocationPriority.PRIORITY_LOW_POWER,
    interval: ms("5s"),
    minUpdateInterval: ms("5s"),
  },
  ios: {
    desiredAccuracy: RNIOSLocationAccuracy.ACCURACY_NEAREST_HUNDRED_METER,
    distanceFilterMeters: 10,
  },
}
    

So when app loads i trigger find me function => requestLocationPermission, it shows system popup on android (allow during app usage, only once, decline). After permissions granted my next function animates camera to fit my location to the nearest coordinates. All works fine except I don't see default blue indicator/marker of my current location. On ios same function works as expected and I immediately see default blue marker/indicator of my location after granting permissions.
On android it seems to appear only after app upload or force map rerender.

Attaching screenshot of the blur indicator for more context

[pinpong]

I guess RNAndroidLocationPriority.PRIORITY_LOW_POWER is the problem because interval and or minUpdateInterval is not a promise. Try RNAndroidLocationPriority.PRIORITY_HIGH_ACCURACY and let me know if the priority level is the issue.

[petropentsak]

Unfortunately, it didn't work :(
Still not seeing blue indicator. Only after app restart or force map rerender it appears

[pinpong]

Please try v1.10.0-dev.3
This version includes a refactored lifecycle handling for android and ios.

[petropentsak]

Thank you! I've tried v1.10.0-dev.3 but unfortunately still having the same issue. So blue location marker hasn't appeared after I granted permissions (Only android).

[pinpong]

Alright, please try v1.10.0-dev.4
This version now forwards the last known location to the LocationSource listener immediately.
Test procedure:

1. Removed the previous app from the device
2. Installed the example app fresh
3. Opened the app and selected Basic Map Example
4. Opened the control panel and requested location permission
5. Immediately received the blue dot and an onLocationUpdate callback
6. Changed the device location → instantly received another onLocationUpdate and the blue dot updated as expected
7. Everything behaves as intended and the initial position is now shown without delay.

Can you please confirm if this works for you and whether this is the behavior you expected?

[petropentsak]

Thank you for your quick help!
Tried the newest version and still having the same issue.

Not sure what is causing it but will try to describe all steps:

1. Deleted app version and installed new one - expo dev client with version v1.10.0-dev.4. (I am using expo 54)
2. Launched app and requestLocationPermission was triggered. System popup was displayed and I accepted location permissions (tried both options for a test - Accept always, during app usage)
3. After permissions granted - onLocationUpdate triggered immediately, location received and setCamera worked as expected. It animated camera to my location
4. blue marker isn't displayed until I restart app or force rerender entire map (with key passed). Added logs for onLocationError, just in case, but no errors

Same execution process on IOS works perfect. I know it doesn't matter much as ios implementation is completely different, but it seems like my code implementation works well - only marker is not displaying.

Testing on samsung s23 ultra and realme c33

[pinpong]

Thanks for the hint, it helped uncover another related bug.
Please test with v1.10.0-dev.6 and report back if the issue persists.

[petropentsak]

You're a legend. It works. Thank you!