效果图
代码如下：
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| import UIKit
import AVFoundation
class ViewController: UIViewController {
var mySession : AVCaptureSession!
var myDevice : AVCaptureDevice!
var myImageOutput : AVCaptureStillImageOutput!
override func viewDidLoad() {
super.viewDidLoad()
mySession = AVCaptureSession()
let devices = AVCaptureDevice.devices()
for device in devices{
if(device.position == AVCaptureDevicePosition.Back){
myDevice = device as AVCaptureDevice
}
}
let videoInput = AVCaptureDeviceInput.deviceInputWithDevice(myDevice, error: nil) as AVCaptureDeviceInput
mySession.addInput(videoInput)
myImageOutput = AVCaptureStillImageOutput()
mySession.addOutput(myImageOutput)
let myVideoLayer : AVCaptureVideoPreviewLayer = AVCaptureVideoPreviewLayer.layerWithSession(mySession) as AVCaptureVideoPreviewLayer
myVideoLayer.frame = self.view.bounds
myVideoLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
self.view.layer.addSublayer(myVideoLayer)
mySession.startRunning()
let myButton = UIButton(frame: CGRectMake(0,0,120,50))
myButton.backgroundColor = UIColor.redColor();
myButton.layer.masksToBounds = true
myButton.setTitle("拍摄", forState: .Normal)
myButton.layer.cornerRadius = 20.0
myButton.layer.position = CGPoint(x: self.view.bounds.width/2, y:self.view.bounds.height-50)
myButton.addTarget(self, action: "onClickMyButton:", forControlEvents: .TouchUpInside)
self.view.addSubview(myButton);
}
func onClickMyButton(sender: UIButton){
let myVideoConnection = myImageOutput.connectionWithMediaType(AVMediaTypeVideo)
self.myImageOutput.captureStillImageAsynchronouslyFromConnection(myVideoConnection, completionHandler: { (imageDataBuffer, error) -> Void in
let myImageData : NSData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(imageDataBuffer)
let myImage : UIImage = UIImage(data: myImageData)!
UIImageWriteToSavedPhotosAlbum(myImage, self, nil, nil)
})
}
}
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