iOS Swift "isSourceTypeAvailable"错误

Question

我仍在学习 Swift。我正在尝试创建一个使用相机捕获图像的应用程序。我正在使用以下代码查看设备中是否存在相机:

@IBAction func imageFromCamera(sender: UIBarButtonItem) {
    let imageCamera = UIImagePickerController()
    imageCamera.delegate = self

    if (UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera)) {
        imageCamera.sourceType = UIImagePickerControllerSourceType.Camera
    } else {
        alertUser("Camera not present")
    }
    self.presentViewController(imageCamera, animated: true, completion: nil)
}

但是，我收到错误“使用未解析的标识符‘isSourceTypeAvailable’。我的代码有什么问题？

非常感谢!

Answer 1

您可以尝试此条件以快速检查相同的内容

if UIImagePickerController.isCameraDeviceAvailable(cameraDevice:UIImagePickerControllerCameraDevice.self)
    {

    }