startMonitoringSignificantLocationChanges is not a function

[timfpark]

startMonitoringSignificantLocationChanges is not a function

[matt-oakes]

Hi there,

This method is actually only available on iOS and from your screenshot, it looks like you are attempting to call it on Android. I recommend checking that you are on iOS before calling it (Platform.OS === "ios").

What you likely want to do is to subscribe to location updates with a large distance filter so your callback only gets called when a large distance change happens. You can do this cross-platform like this:

RNLocation.configure({
    distanceFilter: 500, // Meters
    desiredAccuracy: {
      ios: "best",
      android: "balancedPowerAccuracy"
    }
})

// Subscribe
const unsubscribe = RNLocation.subscribeToLocationUpdates(locations => {
  ...
})

// Unsubscribe
unsubscribe();

I do think the error message for calling startMonitoringSignificantLocationChanges on Android could be improved, so I'll leave this open as a reminder for me to do that.

Let me know if you have any other issues.

[arhmnsh]

Hi @matt-oakes,
Thanks for the reply!
Got confused with subscribeToLocationUpdates and subscribeToSignificantLocationUpdates.

Very helpful library, btw!