swift - 如何转动箭头（图像）使其不会转动 CalloutView

Question

我需要转动地图上的箭头（customAnnotationView），以便 calloutView 不会旋转（示例 1）。

当我仅旋转图像时：箭头未设置在中心并且大小不同（示例 2）。

示例 1

示例 2

Example 1
annotationView?.transform = CGAffineTransform(rotationAngle: CGFloat((-180.0 * .pi / 180) - -customPointAnnotation.ang))

Example 2
annotationView?.image = UIImage(named: customPointAnnotation.pinCustomImageName)?.rotate(radians: CGFloat((90.0 * .pi / 180) - -customPointAnnotation.ang))

Answer 1

我希望它能解决你的问题

 let pinImage = UIImage(named: "customPointAnnotation.pinCustomImageName")
        let size = CGSize(width: 50, height: 50) // size of your choice
        UIGraphicsBeginImageContext(size)
        pinImage!.draw(in: CGRect(x: 0, y: 0, width: size.width, height: size.height))
        let resizedImage = UIGraphicsGetImageFromCurrentImageContext()
        let rotatedImage =  . resizedImage rotate(radians: CGFloat((90.0 * .pi / 180) - -customPointAnnotation.ang)) //if still not set do check by changing image or by slightly changing redians angle values.
        annotationView?.image = rotatedImage