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iOS

Posted by PETRA LUTZ
PETRA LUTZ
2,922 Points

iOS, How to use GMSCoordinateBounds in order to show all the markers of the map? (Google Maps SDK)

I want to show all the markers that are on my map, after doing some searches I found that it should be done with GMSCoordinateBounds (Google Maps SDK) I've read the official documentation about it, but I have not understand how to use it and implement it in my code.

https://developers.google.com/maps/documentation/ios/reference/interface_g_m_s_camera_update#aa5b05606808272f9054c54af6830df3e

1 Answer

Jonathan Baker
Jonathan Baker
2,304 Points
Jonathan Baker
Jonathan Baker
2,304 Points

Hi Petra,

You are correct that you need a GMSCoordinateBounds that is large enough to contain all of your markers. There are a couple ways you can go about this.

The easiest way I have found is to create a GMSMutablePath and then add all the coordinates of your markers to it. Then you can use the GMSCoordinateBounds initializer initWithPath: to create the bounds.

For example, if you have an array of GMSMarker's:

NSArray *myMarkers;

GMSMutablePath *path = [GMSMutablePath path];

for (GMSMarker *marker : myMarkers) {
    [path addCoordinate: marker.position];
}

GMSCoordinateBounds *bounds = [[GMSCoordinateBounds alloc] initWithPath:path];

Once you have the bounds, you can create the GMSCameraUpdate and use it to animate the map to the visible bounds containing all of your markers. =)