我在viewController上有几个UIViews,我想点击它们把我带到不同的视图控制器 . 我有自定义UIView外观的自定义UIView子类,因为我无法从子类导航,我创建了一个委托协议,允许我从视图控制器导航
协议:
protocol TapDelegate {
func viewWasTapped()
}
在视图控制器上我已经符合这个协议,创建了一个自定义子视图的实例(常量是图标),最后我创建了一个导航到各种视图控制器的函数:
func viewWasTapped() {
print("icon was tapped")
if icons.tag == 0 {
let food_Tabs_VC = self.storyBoard.instantiateViewController(withIdentifier: String(describing: FoodTabsViewController.self)) as! FoodTabsViewController
self.navigationController?.pushViewController(food_Tabs_VC, animated: true)
} else if icons.tag == 1 {
let movesVC = self.storyBoard.instantiateViewController(withIdentifier: String(describing: MovesViewController.self)) as! MovesViewController
self.navigationController?.pushViewController(movesVC, animated: true)
} else if icons.tag == 2 {
let msgLogVC = self.storyBoard.instantiateViewController(withIdentifier: String(describing: MsgLogViewController.self)) as! MsgLogViewController
self.navigationController?.pushViewController(msgLogVC, animated: true)
} else {
let myWorldVC = self.storyBoard.instantiateViewController(withIdentifier: String(describing: MyWorldViewController.self)) as! MyWorldViewController
self.navigationController?.pushViewController(myWorldVC, animated: true)
}
}
然而,当我尝试在我的自定义UIView子类中使用点击手势时,当我点击UIView时,我得到未捕获异常的错误,这里是点击手势代码:
let homeVC = HomeViewController()
let gesture = UITapGestureRecognizer(target: self, action:#selector(homeVC.viewWasTapped))
self.addGestureRecognizer(gesture)
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1 回答
代码行
看起来很可疑,因为最后一行暗示
self
是UIView
的某个子类 . 并且viewWasTapped
选择器的目标应为HomeViewController
类型 . 所以你可能需要将第二行的target
更改为homeVC
.