如何通過滑動UITableViewCell

Question

來揭示隱藏的文本我試圖在用戶從左向右滑動單元格時顯示的UITableView中單元格的左側放置日期字段。釋放時，細胞應該彈回原位，隱藏日期字段。有誰知道如何做到這一點？它是否在

func tableView(_ tableView: UITableView, editActionsForRowAt: IndexPath) -> [UITableViewRowAction]? { 

或以某種方式定義在自定義單元格內？

Answer 1

我不會在發佈時使用編輯委託。

將單元格內容放入UIView的UIScrollView中，然後在您希望顯示的UIScrollView後面設置信息。

然後在滾動delegate,scrollViewDidEndDragging上，將contentOffset設置爲0動畫。

編輯：潘手勢例如

如果你想爲最簡單的途徑，建立了customContentView這是你的細胞大小的電池，泛姿態加入到這一點，那麼設置和按鈕，你想要的，我的例子下面我有一個按鈕，每邊。

注：這是SWIFT 2，但應該很容易翻譯，我做了這個一個longgg時間前，當SWIFT 2發佈之後，它可能與重構

var savedX = 0 as CGFloat 
var buttonWidth = 60 as CGFloat 
var open = false 

func panGestureHandler(gesture: UIPanGestureRecognizer) { 

    if gesture.state == .Changed { 
     let translation = gesture.translationInView(tagView) 

     let difference = -translation.x 

     if difference > 0 && !allowScrollRight { 
      return 
     } 

     let newConstant = savedX + difference 

     tagViewCenterXConstraint.constant = newConstant 

     let alpha = abs(tagViewCenterXConstraint.constant)/buttonWidth 

     deleteButton.alpha = min(alpha, 1) 
     followButton.alpha = min(alpha, 1) 

     if let action = swipe { 
      action(self) 
     } 
    } 

    if gesture.state == .Ended { 
     let translation = gesture.translationInView(self) 

     let trans = fabs(translation.x) 

     open = !open && trans > buttonWidth 

     if open { 
      if(translation.x > 0){ 
       resetRight(true) 
      } else { 
       if allowScrollRight { 
        resetLeft(true) 
       } 
      } 
     } else { 
      resetView(true){ 

      } 
     } 
    } 
} 

func resetLeft (animated : Bool) { 
     tagViewCenterXConstraint.constant = self.buttonWidth 
     savedX = self.buttonWidth 


    if animated { 
     UIView.animateWithDuration(0.5, delay: 0, usingSpringWithDamping: 0.7, initialSpringVelocity: 0.7, options: [UIViewAnimationOptions.CurveEaseIn, UIViewAnimationOptions.BeginFromCurrentState], animations: {() -> Void in 
      self.tagView.layoutIfNeeded() 
      self.leftView.layoutIfNeeded() 
      self.rightView.layoutIfNeeded() 

      }, completion: { (finished) -> Void in 
     }) 
    } 
} 

func resetRight (animated : Bool) { 
    tagViewCenterXConstraint.constant = -self.buttonWidth 
    savedX = -self.buttonWidth 

    if animated { 
     UIView.animateWithDuration(0.5, delay: 0, usingSpringWithDamping: 0.7, initialSpringVelocity: 0.7, options: [UIViewAnimationOptions.CurveEaseIn, UIViewAnimationOptions.BeginFromCurrentState], animations: {() -> Void in 
      self.tagView.layoutIfNeeded() 
      self.leftView.layoutIfNeeded() 
      self.rightView.layoutIfNeeded() 

      }, completion: { (finished) -> Void in 
     }) 
    } 
} 

func resetView (animated : Bool, completion:() -> Void) { 
    tagViewCenterXConstraint.constant = 0 
    savedX = 0 
    open = false 

    if animated { 
     UIView.animateWithDuration(0.5, delay: 0, usingSpringWithDamping: 0.7, initialSpringVelocity: 0.7, options: [UIViewAnimationOptions.CurveEaseIn, UIViewAnimationOptions.BeginFromCurrentState], animations: {() -> Void in 
      self.tagView.layoutIfNeeded() 
      self.leftView.layoutIfNeeded() 
      self.rightView.layoutIfNeeded() 

      }, completion: { (finished) -> Void in 
       completion() 
     }) 
    } else { 
     completion() 
    } 
}