Swift 3.0 XCode 8.0

通过点击cell中的按钮获取cell的indexPath

如，点击cell中的按钮，删除获取修改等操作。

// 注意层次关系
let cell = btn.superview as! UITableViewCell
// 通过cell本身获取cell的indexPath
let indexpath = self.tv.indexPath(for: cell)

长按tableviewCell后，后去cell的indexPath

用于长按，弹出操作菜单。

override func viewDidLoad() {
    super.viewDidLoad()

    let longpress = UILongPressGestureRecognizer(target: self,action: #selector(longPress(gesture:)))
    longpress.minimumPressDuration = 0.8
    // tableview tv
    self.tv.addGestureRecognizer(longpress)
}

func longPress(gesture:UILongPressGestureRecognizer) {
    let p = gesture.location(in: self.tv)
    if gesture.state == .began {
        let indexpath = self.tv.indexPathForRow(at: p)
        print(indexpath)
    }
}