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我想获取当前屏幕的截图,所以当我覆盖我的下一个视图控制器时,我可以使其背后的图像视图显示为半透明。这工作,但现在它在中间产生一些奇怪的灰色。这里是我使用的代码:屏幕截图 - 奇怪的灰色区域
func requestOverride(overrideReason : String, notificationName : Notification.Name) {
captureScreen { (image) in
ManagerOverride.image = image
let vc = UIStoryboard(name: "ManagerOverride", bundle: nil).instantiateViewController(withIdentifier: "overrideNav") as! UINavigationController
let over = vc.viewControllers.first as! ManagerOverrideViewController
let _ = over.view
over.overrideReason.text = overrideReason
over.notifyName = notificationName
UIApplication.shared.keyWindow?.currentViewController()?.present(vc, animated: true, completion: nil)
}
}
func captureScreen(completion: @escaping (UIImage) ->()) {
let view = UIApplication.shared.keyWindow!.currentViewController()!.view!
UIGraphicsBeginImageContextWithOptions(view.bounds.size, false, UIScreen.main.scale)
view.layer.render(in: UIGraphicsGetCurrentContext()!)
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
completion(image!)
}
这里就是我找回:
我不知道为什么它这样做