保存在 iPad 上的图像在任一面都带有黑边

问：

当我在 iPad 上从简单的相机应用程序保存图像时，它会创建一个信箱形状的图像。也就是说，两侧各有一个黑条。在 iPhone 上保存不会这样做。 我应该在代码中查找哪里来纠正此问题？

编辑： 这是我保存的代码。好像还好？我听到你在说什么，但我看不到解决办法。它保存图像，而不是iPad上的宽图像。

    func saveToCamera() {

    if let videoConnection = stillImageOutput.connection(with: AVMediaType.video) {
        stillImageOutput.captureStillImageAsynchronously(from: videoConnection, completionHandler: { (CMSampleBuffer, Error) in

            if let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(CMSampleBuffer!) {
                if let cameraImage = UIImage(data: imageData,scale: UIScreen.main.scale) {

                    // ------------------- Do Shutter Blink -------------------------
                    let blinkWidth = cameraImage.size.width
                    let blinkHeight = cameraImage.size.height
                    print("Blink Width: \(blinkWidth)")
                    print("Blink Height: \(blinkHeight)")

                    // do actual shutter simulation
                    let rect = CGRect(origin: CGPoint(x: 0, y: 0), size: CGSize(width: blinkWidth, height: blinkHeight))
                    let shutterView = UIView(frame: rect)
                    shutterView.backgroundColor = UIColor.black
                    self.view.addSubview(shutterView)
                    UIView.animate(withDuration: 0.3, animations: {
                        shutterView.alpha = 0
                    }, completion: { (_) in
                        shutterView.removeFromSuperview()
                    })

                    //Do shutter sound
                    let cameraShutterSoundID: SystemSoundID = 1108
                    AudioServicesPlaySystemSound(cameraShutterSoundID)
                    // -------------- end of blliink and shutter sound ---------------------

                    // Actually save the combined photo
                    if let nImage = self.drawCirclesOnImage(fromImage: cameraImage, targetSize: CGSize.zero) {
                        UIImageWriteToSavedPhotosAlbum(nImage, nil, nil, nil)
                    }

                }
            }
        })
    }
}