iOS/swift之截屏

1.*************截屏**************

 func saveToLocal() {
        //截屏
        let screenRect = UIScreen.main.bounds
        UIGraphicsBeginImageContext(screenRect.size)
        let ctx:CGContext = UIGraphicsGetCurrentContext()!
        self.view.layer.render(in: ctx)
        let image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext();
        
        //保存相册
        UIImageWriteToSavedPhotosAlbum(image!, self, Selector("image:didFinishSavingWithError:contextInfo:"), nil)
        
    }
    
    func image(image:UIImage,didFinishSavingWithError error:NSError?,contextInfo:AnyObject) {
        
        if error != nil {
//            截屏成功
        } else {
//            截屏失败
        }
    }