Ios 从UI屏幕拍摄快照
我想从视图(包括状态栏)中拍摄快照 下面的代码在模拟器中工作,但在物理设备上不工作Ios 从UI屏幕拍摄快照,ios,swift,Ios,Swift,我想从视图(包括状态栏)中拍摄快照 下面的代码在模拟器中工作,但在物理设备上不工作 extension UIScreen { class func screenshot() -> UIImage { let view = main.snapshotView(afterScreenUpdates: false) UIGraphicsBeginImageContext(view.bounds.size) view.drawHierar
extension UIScreen {
class func screenshot() -> UIImage {
let view = main.snapshotView(afterScreenUpdates: false)
UIGraphicsBeginImageContext(view.bounds.size)
view.drawHierarchy(in: view, afterScreenUpdates: true)
let screenshot = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return screenshot!
}
}
要解决您的问题,您可以使用此功能:
func takeScreenshot() -> UIImage? {
var screenshotImage :UIImage?
let layer = UIApplication.shared.keyWindow!.layer
let scale = UIScreen.main.scale
UIGraphicsBeginImageContextWithOptions(layer.frame.size, false, scale);
guard let context = UIGraphicsGetCurrentContext() else {return nil}
layer.render(in:context)
screenshotImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return screenshotImage
}
我刚刚测试了它,它可以在物理设备上工作。创建一个扩展,如:
extension UIScreen {
class func screenshot() -> UIImage {
let view = main.snapshotView(afterScreenUpdates: false)
UIGraphicsBeginImageContext(view.bounds.size)
view.drawHierarchy(in: view, afterScreenUpdates: true)
let screenshot = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return screenshot!
}
}
extension UIApplication {
func getViewScreenShot(vc: UIViewController) -> UIImage? {
let scale = UIScreen.main.scale
let bounds = vc.view.bounds
UIGraphicsBeginImageContextWithOptions(bounds.size, false, scale)
if UIGraphicsGetCurrentContext() != nil {
vc.view.drawHierarchy(in: bounds, afterScreenUpdates: true)
let screenshot = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return screenshot!
}
return nil
}
}
把它叫做:
weak var weakSelf = self
let screenShotImage: UIImage = UIApplication.shared.getViewScreenShot(vc: weakSelf!)
此代码未编译,是否要调用
view.drawHierarchy(in:view.frame,afterScreenUpdate:true)
?