如何旋转箭头(图像)，使其不会转向CalloutView

Question

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

当我只旋转图像时:箭头没有设置在中心并且大小不同(示例2)。

示例1

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示例2

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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