如何在 Swift 中使用组合图像创建 GMSMarker

I need to create a GMSMarker for my Google Maps screen in an iOS app. I need the marker to be a combination of images, i.e. a Generic marker image and a User Image. eg:

在此标记内，我需要适合用户的图像。我的资产中有这两个图像。 它尝试过

func image(byDrawingImage image: UIImage, inRect rect: CGRect) -> UIImage! {
        UIGraphicsBeginImageContext(size)

        draw(in: CGRect(x: 0, y: 0, width: size.width, height: size.height))

        image.draw(in: rect)
        let result = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        return result
    }

但这返回了一个不完美的图像。 有替代解决方案吗？ 注意：此处提供的示例标记图像不是我实际使用的图像。那是一个矩形标记。

在这里，我为您提供一些示例代码，尝试一下，它将起作用并根据您的要求进行自定义/修改：

let marker = GMSMarker()
let lat = Double("13.063754")
let long = Double("80.24358699999993")
marker.position = CLLocationCoordinate2DMake(lat!,long!)

///Creating UIView for Custom Marker
let DynamicView=UIView(frame: CGRectMake(0, 0, 50, 50))
DynamicView.backgroundColor=UIColor.clearColor()

//Creating Marker Pin imageview for Custom Marker
var imageViewForPinMarker : UIImageView
imageViewForPinMarker  = UIImageView(frame:CGRectMake(0, 0, 40, 50));
imageViewForPinMarker.image = UIImage(named:"LocationPin")

//Creating User Profile imageview
var imageViewForUserProfile : UIImageView
imageViewForUserProfile  = UIImageView(frame:CGRectMake(0, 0, 35, 35));
imageViewForUserProfile.image = UIImage(named:"userprofile")

//Adding userprofile imageview inside Marker Pin Imageview
imageViewForPinMarker.addSubview(imageViewForUserProfile)

//Adding Marker Pin Imageview isdie view for Custom Marker
DynamicView.addSubview(imageViewForPinMarker)

//Converting dynamic uiview to get the image/marker icon.
UIGraphicsBeginImageContextWithOptions(DynamicView.frame.size, false, UIScreen.mainScreen().scale)
DynamicView.layer.renderInContext(UIGraphicsGetCurrentContext()!)
let imageConverted: UIImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()

marker.icon = imageConverted
marker.map = self.mapView