在没有导航/状态栏的情况下拍摄相机卷的屏幕截图,可以通过以下步骤实现:
以下是一个示例代码,展示了如何在Swift 3和Xcode 8中实现上述步骤:
import UIKit
import AVFoundation
class ViewController: UIViewController {
@IBOutlet weak var cameraView: UIView!
var captureSession: AVCaptureSession?
var stillImageOutput: AVCaptureStillImageOutput?
var previewLayer: AVCaptureVideoPreviewLayer?
override func viewDidLoad() {
super.viewDidLoad()
setupCaptureSession()
}
func setupCaptureSession() {
captureSession = AVCaptureSession()
captureSession?.sessionPreset = AVCaptureSession.Preset.photo
guard let backCamera = AVCaptureDevice.default(for: AVMediaType.video) else {
print("Unable to access back camera")
return
}
do {
let input = try AVCaptureDeviceInput(device: backCamera)
stillImageOutput = AVCaptureStillImageOutput()
if captureSession!.canAddInput(input) && captureSession!.canAddOutput(stillImageOutput!) {
captureSession?.addInput(input)
captureSession?.addOutput(stillImageOutput!)
previewLayer = AVCaptureVideoPreviewLayer(session: captureSession!)
previewLayer?.videoGravity = AVLayerVideoGravity.resizeAspectFill
previewLayer?.connection?.videoOrientation = AVCaptureVideoOrientation.portrait
cameraView.layer.addSublayer(previewLayer!)
captureSession?.startRunning()
}
} catch {
print("Error setting up capture session: \(error)")
}
}
@IBAction func captureImage(_ sender: UIButton) {
guard let videoConnection = stillImageOutput?.connection(with: AVMediaType.video) else {
print("Unable to capture image")
return
}
stillImageOutput?.captureStillImageAsynchronously(from: videoConnection, completionHandler: { (sampleBuffer, error) in
if let buffer = sampleBuffer, let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(buffer) {
if let image = UIImage(data: imageData) {
UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil)
}
}
})
}
}
这个示例代码中,我们创建了一个名为cameraView的UIView,用于显示相机卷的内容。在viewDidLoad方法中,我们调用了setupCaptureSession方法来设置相机捕获会话,并将其连接到cameraView上。在captureImage方法中,我们使用AVCaptureStillImageOutput类来捕获相机卷的静态图像,并将其保存到相机卷中。
这是一个基本的实现,你可以根据自己的需求进行修改和扩展。希望对你有帮助!
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