当我显示警报时,我正在截取屏幕截图,这可用于截取屏幕截图,但是当它保存到相机胶卷时,它仅捕获警报后面的屏幕,并且未在屏幕截图中包含警报。 / p>
是否可以这样做?
以下是我的代码。
func ScreenShot() {
//Create the UIImage
UIGraphicsBeginImageContextWithOptions(view.frame.size, true, 0)
guard let context = UIGraphicsGetCurrentContext() else { return }
view.layer.render(in: context)
guard let image = UIGraphicsGetImageFromCurrentImageContext() else { return }
UIGraphicsEndImageContext()
//Save it to the camera roll
UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil)
}
在这里打电话。
func alertShow() {
let alert = UIAlertController(title: "ALERT!!!", message: "Message stuff", preferredStyle: UIAlertControllerStyle.alert)
alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.default, handler: { action in
self.performSegue(withIdentifier: "toMainInfoVC", sender: nil)
}))
self.present(alert, animated: true, completion: nil)
ScreenShot()
}
答案 0 :(得分:2)
我认为您需要关键窗口的完整图层
let layer = UIApplication.shared.keyWindow!.layer
let scale = UIScreen.main.scale
UIGraphicsBeginImageContextWithOptions(layer.frame.size, false, scale);
layer.render(in: UIGraphicsGetCurrentContext()!)
答案 1 :(得分:2)
您的代码存在两个问题。首先,您会在警报完成之前立即尝试拍摄快照。您可以在当前的竞争处理程序中调用快照函数:
self.present(alert, animated: true) {
self.ScreenShot()
}
其次,您只渲染当前视图,并且警报不是viewcontroller视图的子视图。您想要渲染整个窗口层次结构:
view.window?.layer.render(in: context)