Question

我目前的代码适用于ios.But，因为很多人都知道UIKit不在Mac OSX应用程序中。如何用我添加的子视图保存nsimage

private func screenShotMethod() -> NSImage? {

    //Create the UIImage
    NSGraphicsBeginImageContext(self.pickedImge.frame.size)
    self.pickedImge.layer.render(in: UIGraphicsGetCurrentContext()!)
    let image = NSGraphicsGetImageFromCurrentImageContext()
    NSGraphicsEndImageContext()

    //Save it to the camera roll
    UIImageWriteToSavedPhotosAlbum(image!, nil, nil, nil)
    return image!
}

Answer 1

我已经从this very related question中找到的代码移植了这个答案。

class CustomView : NSView {

    func saveAScreenShotOfThisViewSomewhere() -> Void {
        self.lockFocus()
        let rep = NSBitmapImageRep(focusedViewRect: self.bounds)
        self.unlockFocus()
        if let data = rep?.tiffRepresentation {
            do {
                try data.write(to: URL(string:"/tmp/someplace.tiff")!, options: Data.WritingOptions.atomic)
            } catch {
                Swift.print("error in writing -> \(error.localizedDescription)")
            }
        }
    }
}

您也可以使用

    if let data = rep?.representation(using: .JPEG, properties: [String : Any]) {

    }

其中表示包括BMP，GIF，JPEG，PNG，TIFF等

我希望这有帮助！

如何使用子视图在Mac OSX中保存NSImage？

1 个答案: