ios - 为什么我使用 Swift 时屏幕截图模糊？

Question

我正在尝试获取屏幕截图，但结果图像有点模糊。我该如何修复它并使之更清晰？

let window = UIApplication.sharedApplication().delegate!.window!!
UIGraphicsBeginImageContextWithOptions(CGSize(width: UIScreen.mainScreen().bounds.width, height: UIScreen.mainScreen().bounds.height - 80), true, UIScreen.mainScreen().scale)
window.drawViewHierarchyInRect(window.bounds, afterScreenUpdates: true)
let windowImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
UIGraphicsBeginImageContext(CGSize(width: UIScreen.mainScreen().bounds.width, height: UIScreen.mainScreen().bounds.height - 145))
windowImage.drawAtPoint(CGPoint(x: -0, y: -65))
let croppedImage: UIImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext();

UIImageWriteToSavedPhotosAlbum(croppedImage, nil, nil, nil)

这是我的代码

Answer 1

看看那个；

    UIScreen.mainScreen().bounds.height - 80)  UIScreen.mainScreen().bounds.height - 145))
windowImage.drawAtPoint(CGPoint(x: -0, y: -65))

仔细检查并更改 80 和 145 以及 -0 和 -65 我认为它们在主屏幕高度上有所不同。

谢谢