ios - 将 UIImage 与 UILabel 合并为一个 UIImage，Swift

Question

我正在尝试将 UIImage 与 UILabel“合并”为一个 UIImage，因为我编写了一个函数，除了标签未添加到当前图形上下文之外，一切正常。我将感谢您的帮助!

    func textToImage(drawText: String, inImage: UIImage, atPoint: CGPoint) -> UIImage{

    // Setup the image context using the passed image
    UIGraphicsBeginImageContext(inImage.size)

    // Put the image into a rectangle as large as the original image

    inImage.draw(in: CGRect(origin: CGPoint.zero, size: CGSize(width: inImage.size.width, height: inImage.size.height)))

    // Create a point within the space that is as bit as the image
    let rectPos = CGPoint(x: atPoint.x, y: atPoint.y)
    let rectSize = CGSize(width: inImage.size.width, height: inImage.size.height)
    let rect = CGRect(origin: rectPos, size: rectSize)

    // Draw the text into an image
    let label = UILabel()
    label.text = drawText
    label.textColor = .white
    label.font = UIFont(name: "Helvetica Bold", size: 12)!

    label.drawText(in: rect)
    // Create a new image out of the images we have created
    let newImage = UIGraphicsGetImageFromCurrentImageContext()

    // End the context now that we have the image we need
    UIGraphicsEndImageContext()

    //Pass the image back up to the caller
    return newImage!
}

Answer 1

您确定要在正确的位置绘制标签吗？是您计算为 CGRect(origin: CGPoint.zero, size: CGSize(width: inImage.size.width, height: inImage.size.height)) 的矩形包含atPoint ？