How to check if a coordinate exists in GMSMutablePath before adding a coordinate

Question

I'm trying to draw a polyline on the Google map as a object travels, sometimes the coordinates sent can get duplicated. I want to prevent duplicate coordinate from being added to the GMSMutablePath. Anyway this be achieved?

Currently I use the following method to add the coordinate to the GMSMutablePath. It adds duplicate values as well!

self.path.addLatitude(coordinate.latitude, longitude: coordinate.longitude)

Answer 1

After doing some digging in GoogleMaps SDK, I arrived at this solution. It may not be the perfect one but you can give it a try.

You can iterate through all the coordinates of the path by using coordinate(at:index) method of GMSMutablePath

Iterating the GMSMutablePath coordinates.

//Here path is your GMSMutablePath
for i in 0..<path.count() {
    let coordinate = path.coordinate(at: i)
    //The coordinate received is a CLLocationCoordinate2D type from which you can get the latitude and longitude.

    //Here check the coordinate latitude and longitude is same as your received coordinate, make a return else add to your path. 
    //You can also keep a flag variable and at the end of all iterations, you can check whether the coordinate is present or not. 

    print(coordinate)
}