我在我的ios应用程序中添加了滑动手势,但不知何故,我无法访问摄像头。我是初学者,如果你能告诉我如何解决这个问题,我会很高兴。 到目前为止,我已经使用:如何使用滑动手势访问摄像头?
import UIKit
class ViewController: UIViewController, UIImagePickerControllerDelegate,UINavigationControllerDelegate{
let imagePicker: UIImagePickerController! = UIImagePickerController()
let reachability = Reachability()!
override func viewDidLoad() {
super.viewDidLoad()
imagePicker.delegate = self
self.view.backgroundColor = UIColor.flatBlackColorDark()
let upSwipe = UISwipeGestureRecognizer(target: self, action: Selector(("handleSwipes")))
upSwipe.direction = .up
view.addGestureRecognizer(upSwipe)
}
和功能:
func handleSwipes(sender:UISwipeGestureRecognizer) {
if (sender.direction == .up){
if (UIImagePickerController.isSourceTypeAvailable(.camera)){
if UIImagePickerController.availableCaptureModes(for: .rear) != nil {
imagePicker.allowsEditing = false
imagePicker.sourceType = .camera
imagePicker.cameraCaptureMode = .photo
present(imagePicker,animated: true, completion: {})
}
}
当你刷卡时会发生什么?你调试了吗? 'handleSwipes'甚至被称为? – matt
这是我得到的错误:终止应用程序由于未捕获的异常'NSInvalidArgumentException',原因:' - [Audio.ViewController handleSwipes]:无法识别的选择器发送到实例0x100d0be50' – Dakata
是的,我认为这可能是发生了什么! :) – matt