         if UIImagePickerController.isSourceTypeAvailable(.Camera) {
             sheet.addAction(UIAlertAction(title: "拍照", style: .Default, handler: { (_) in
                 let pickerVc = UIImagePickerController()
-                pickerVc.delegate = TTImagePicker.imagePicker
+                pickerVc.delegate = TTImagePicker.picker
                 pickerVc.sourceType = .Camera
                 pickerVc.allowsEditing = allowsEdited
                 viewC.presentViewController(pickerVc, animated: true, completion: nil)

    ///
    ///  - returns: 回调闭包
    private var finishAction:((UIImage?)->Void)?
    private static var imagePicker: TTImagePicker?
    ///  弹出ImagePicker
    ///
    ///  - parameter viewController: 当前控制器

    ///  - parameter iconView:       当前图片所在View（默认为nil则不展示图片查看功能）
    ///  - parameter finishAction:   选择完图片回调
    class func showImagePickerFromViewController(viewController:UIViewController,allowsEditing:Bool,iconView:UIImageView? = nil,finishAction:(_:UIImage?->Void)) {
        if picker == nil {
            picker = TTImagePicker()
        }
        picker!.showImagePickerFromViewController(viewController, allowsEdited: allowsEditing,iconView: iconView ,callBackAction: finishAction)
    }
}
extension TTImagePicker:UIImagePickerControllerDelegate,UINavigationControllerDelegate{
