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正如标题所示，我试图在键盘的视图内添加一个相机，就像当前Messages应用程序中的相机一样。在自定义键盘中添加相机视图 - Swift 3.0和IOS 10
随着我当前的代码，键盘只是简单的被跳过当我试图改变它，它绝不会要求得到允许访问摄像头，即使我设置了正确的密钥的info.plist内（我将它设置在键盘和主类的info.plist）。我没有写其他代码。
这是我的代码我KeyboardViewController
import UIKit
import AVFoundation
class KeyboardViewController: UIInputViewController {
@IBOutlet weak var cameraView: UIView!
@IBOutlet var nextKeyboardButton: UIButton!
var session : AVCaptureSession?
var stillImageOutput : AVCaptureStillImageOutput?
var videoPreviewLayer : AVCaptureVideoPreviewLayer?
var captureDevice : AVCaptureDevice?
override func updateViewConstraints() {
super.updateViewConstraints()
// Add custom view sizing constraints here
}
override func viewDidLoad() {
super.viewDidLoad()
// Perform custom UI setup here
self.nextKeyboardButton = UIButton(type: .system)
self.nextKeyboardButton.setTitle(NSLocalizedString("Next Keyboard", comment: "Title for 'Next Keyboard' button"), for: [])
self.nextKeyboardButton.sizeToFit()
self.nextKeyboardButton.translatesAutoresizingMaskIntoConstraints = false
self.nextKeyboardButton.addTarget(self, action: #selector(handleInputModeList(from:with:)), for: .allTouchEvents)
self.view.addSubview(self.nextKeyboardButton)
self.nextKeyboardButton.leftAnchor.constraint(equalTo: self.view.leftAnchor).isActive = true
self.nextKeyboardButton.bottomAnchor.constraint(equalTo: self.view.bottomAnchor).isActive = true
}
override func viewWillAppear(_ animated: Bool) {
session = AVCaptureSession()
session!.sessionPreset = AVCaptureSessionPresetPhoto
let videoDevices = AVCaptureDevice.devices(withMediaType: AVMediaTypeVideo)
for device in videoDevices! {
let device = device as! AVCaptureDevice
if device.position == AVCaptureDevicePosition.front {
captureDevice = device
}
}
//We will make a new AVCaptureDeviceInput and attempt to associate it with our backCamera input device.
//There is a chance that the input device might not be available, so we will set up a try catch to handle any potential errors we might encounter.
var error : NSError?
var input : AVCaptureDeviceInput!
do {
input = try AVCaptureDeviceInput(device: captureDevice)
} catch let error1 as NSError {
error = error1
input = nil
print(error!.localizedDescription)
}
if error == nil && session!.canAddInput(input) {
session!.addInput(input)
// The remainder of the session setup will go here...
stillImageOutput = AVCaptureStillImageOutput()
stillImageOutput?.outputSettings = [AVVideoCodecKey : AVVideoCodecJPEG]
if session!.canAddOutput(stillImageOutput) {
session!.addOutput(stillImageOutput)
//configure live preview here
videoPreviewLayer = AVCaptureVideoPreviewLayer(session: session)
videoPreviewLayer!.videoGravity = AVLayerVideoGravityResizeAspect
videoPreviewLayer!.connection?.videoOrientation = AVCaptureVideoOrientation.portrait
cameraView.layer.addSublayer(videoPreviewLayer!)
session!.startRunning()
}
}
}
override func viewDidAppear(_ animated: Bool) {
videoPreviewLayer!.frame = cameraView.bounds
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated
}
override func textWillChange(_ textInput: UITextInput?) {
// The app is about to change the document's contents. Perform any preparation here.
}
override func textDidChange(_ textInput: UITextInput?) {
// The app has just changed the document's contents, the document context has been updated.
var textColor: UIColor
let proxy = self.textDocumentProxy
if proxy.keyboardAppearance == UIKeyboardAppearance.dark {
textColor = UIColor.white
} else {
textColor = UIColor.black
}
self.nextKeyboardButton.setTitleColor(textColor, for: [])
}
}