如何使用iOS版Google Maps SDK拟合坐标数组的边界? [英] How to fit bounds for coordinate array with google maps sdk for iOS?

问题描述

如何使用iOS版Google Maps sdk拟合坐标数组的边界? 我需要缩放地图以显示4个可见标记.

How to fit bounds for coordinate array with google maps sdk for iOS? I need to zoom map for 4 visible markers.

推荐答案

这是我针对此问题的解决方案.通过多个坐标构建GMSCoordinateBounds对象.

Here's my solution for this problem. Building a GMSCoordinateBounds object by multiple coordinates.

- (void)focusMapToShowAllMarkers
{       
    CLLocationCoordinate2D myLocation = ((GMSMarker *)_markers.firstObject).position;
    GMSCoordinateBounds *bounds = [[GMSCoordinateBounds alloc] initWithCoordinate:myLocation coordinate:myLocation];

    for (GMSMarker *marker in _markers)
        bounds = [bounds includingCoordinate:marker.position];

    [_mapView animateWithCameraUpdate:[GMSCameraUpdate fitBounds:bounds withPadding:15.0f]];
}

更新的答案:由于不推荐使用GMSMapView markers 属性，因此应将所有标记保存在自己的数组中.

Updated answer: Since GMSMapView markers property is deprecated, you should save all markers in your own array.

更新了迅速3答案:

    func focusMapToShowAllMarkers() {
        let firstLocation = (markers.first as GMSMarker).position
        var bounds = GMSCoordinateBoundsWithCoordinate(firstLocation, coordinate: firstLocation)

        for marker in markers {
            bounds = bounds.includingCoordinate(marker.position)
        }
        let update = GMSCameraUpdate.fitBounds(bounds, withPadding: CGFloat(15))
        self.mapView.animate(cameraUpdate: update)
  }

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