Question

我有一个带自定义单元格的UITableViewController。我“不想”识别所选单元格，但在TableView中识别所选标签本身。与Instagram类似，当我选择用户时，它应该转到用户页面，而如果我选择注释，它会推送到同一单元格内发生的另一个注释VC。

我从这个link中学到了添加手势识别器的功能，但是它正在崩溃我。

016-02-10 17:53:20.490 SocialMe[1395:476081] -[SocialMe.LatestPostViewController didSelectUserLabel]: unrecognized selector sent to instance 0x13deac830
2016-02-10 17:53:20.495 SocialMe[1395:476081] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[SocialMe.LatestPostViewController didSelectUserLabel]: unrecognized selector sent to instance 0x13deac830'
*** First throw call stack:
(0x18267d900 0x181cebf80 0x18268461c 0x1826815b8 0x18258568c 0x1878f0dbc 0x1875145b8 0x1873a29b0 0x1878f23bc 0x187361b58 0x18735e8dc 0x1873a0820 0x18739fe1c 0x1873704cc 0x18736e794 0x182634efc 0x182634990 0x182632690 0x182561680 0x183a70088 0x1873d8d90 0x100077794 0x1821028b8)
libc++abi.dylib: terminating with uncaught exception of type NSException

我的代码如下

class LatestPostViewController: UITableViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        self.title = "Latest Post"
        self.refreshControl?.beginRefreshing()
        GetLatestPost()

        let userLabelRecognizer = UITapGestureRecognizer(target: self, action: "didSelectUserLabel")
        self.tableView.addGestureRecognizer(userLabelRecognizer)


        self.refreshControl?.addTarget(self, action: "refresh:", forControlEvents: UIControlEvents.ValueChanged)
    }

    func didSelectUserLabel(recognizer: UITapGestureRecognizer) {
        if recognizer.state == UIGestureRecognizerState.Ended {
            let swipeLocation = recognizer.locationInView(self.tableView)
            if let swipedIndexPath = tableView.indexPathForRowAtPoint(swipeLocation) {
                if let swipedCell = self.tableView.cellForRowAtIndexPath(swipedIndexPath) {
                    // Swipe happened. Do stuff!
                }
            }
        }
    }
}

Answer 1

将您的代码更新为：

    let userLabelRecognizer = UITapGestureRecognizer(target: self, action: "didSelectUserLabel:")
    self.tableView.addGestureRecognizer(userLabelRecognizer)

Answer 2

如果您使用didSelectUserLabel

let userLabelRecognizer = UITapGestureRecognizer(target: self, action: "didSelectUserLabel")

你需要实现像

func didSelectUserLabel()
{

}

如果您使用didSelectUserLabel:

let userLabelRecognizer = UITapGestureRecognizer(target: self, action: "didSelectUserLabel:")

你需要实现像

func didSelectUserLabel(recognizer: UITapGestureRecognizer) {
    if recognizer.state == UIGestureRecognizerState.Ended {
        let swipeLocation = recognizer.locationInView(self.tableView)
        if let swipedIndexPath = tableView.indexPathForRowAtPoint(swipeLocation) {
            if let swipedCell = self.tableView.cellForRowAtIndexPath(swipedIndexPath) {
                // Swipe happened. Do stuff!
            }
        }
    }
}
}

无法识别的选择器发送到UITableView中的实例

2 个答案: