ios - 如何在 Swift 中使用组合图像创建 GMSMarker

Question

我需要在 iOS 应用程序中为我的 Google map 屏幕创建一个 GMSMarker。我需要标记是图像的组合，即通用标记图像和用户图像。例如:

在此标记内，我需要适合用户的图像。我的 Assets 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。

Answer 1

这里我给你提供一些示例代码，试试看，它会根据你的要求工作和定制/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