在查看了无数的StackOverflow帖子后,没有什么能真正回答如何在淡入淡出和没有红色删除按钮的情况下删除UITableViewCell时使用滑动到关闭.
我的Tableviewcell看起来像一张卡片,因此删除按钮的红色框架打破了卡片形状的这些细胞的连续性和高度感.
这是我目前用来删除的代码,尽管UITableViewRowAnimation上有.fade,但它不会消失.
func tableView(_ tableView: UITableView,shouldIndentWhileEditingRowAt indexPath: IndexPath) -> Bool {
return false
}
func tableView(_ tableView: UITableView,editingStyleForRowAt indexPath: IndexPath) -> UITableViewCellEditingStyle {
return .none
}
func tableView(_ tableView: UITableView,commit editingStyle: UITableViewCellEditingStyle,forRowAt indexPath: IndexPath) {
if editingStyle == .delete {
self.pastOrders.remove(at: indexPath.row)
tableView.deleteRows(at: [indexPath],with: .fade)
}
}
这是我试图实现的行为的屏幕截图：
解决方法
输出3
//TO CHANGE "DELETE" TITLE COLOR
func tableView(_ tableView: UITableView,editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
let toDelete = UITableViewRowAction(style: .normal,title: "") { (action,indexPath) in
print("\n\n Delete item at indexPathDelete item at indexPath")
}
let deleteTextImg = swipeCellButtons(labelText: "Delete",textColor: UIColor.darkGray,alphaVal: 1.0)
toDelete.backgroundColor = UIColor(patternImage: deleteTextImg)
return [toDelete]
}
func swipeCellButtons(labelText : String,textColor: UIColor,alphaVal: CGFloat) -> UIImage
{
let commonWid : CGFloat = 40
let commonHei : CGFloat = 70 // ROW HEIGHT
let label = UILabel(frame: CGRect(x: 0,y: 0,width: commonWid,height: commonHei))
label.text = labelText
label.textAlignment = .center
label.font = UIFont.systemFont(ofSize: 11)
label.textColor = textColor.withAlphaComponent(alphaVal)
UIGraphicsBeginImageContextWithOptions(CGSize(width: self.view.frame.width,height: commonHei),false,UIScreen.main.scale)
let context = UIGraphicsGetCurrentContext()
context!.setFillColor(UIColor.clear.cgColor) // YOU CAN GIVE YOUR BGCOLOR FOR DELETE BUTTON
context!.fill(CGRect(x: 0,width: (self.view.frame.width) / 3,height: commonHei))
label.layer.render(in: context!)
//If you want to add image instead of text,uncomment below lines.
//Then,comment this "label.layer.render(in: context!)" line
//var img: UIImage = UIImage(named: "deleteIcon")!
//img.draw(in: CGRect(x: 0,width: 30,height: 30))
let newImage: UIImage = UIGraphicsGetImageFromCurrentImageContext()!
UIGraphicsEndImageContext()
return newImage
}
输出2：
// INSIDE CELL FOR ROW AT INDEXPATH
// COMMENT THIS LINE
//cell.addGestureRecognizer(swipeGesture)
// CELL FADE WILL NOT WORK HERE
func tableView(_ tableView: UITableView,title: " ") { (action,indexPath) in
print("\n\n Delete item at indexPathDelete item at indexPath")
}
toDelete.backgroundColor = .white
return [toDelete]
}
输出1：
// GLOBAL DECLARATION
var gotCell : DefaultTableViewCell?
var alphaValue : CGFloat = 1.0
var deletingRowIndPath = IndexPath()
// INSIDE CELL FOR ROW AT INDEXPATH
//let cell = tableView.dequeueReusableCell(withIdentifier: "default",for: indexPath) as! DefaultTableViewCell
let cell = DefaultTableViewCell() // Add this line and comment above line. The issue is `dequeuingreusingcell`. In this method,it will stop dequeuing. But,we have to customise `UITableViewCell` in coding.
let swipeGesture = UIPanGestureRecognizer(target: self,action: #selector(handleSwipe))
swipeGesture.delegate = self
cell.addGestureRecognizer(swipeGesture)
func handleSwipe(panGesture: UIPanGestureRecognizer) {
if panGesture.state == UIGestureRecognizerState.began {
let cellPosition = panGesture.view?.convert(CGPoint.zero,to: defTblVw)
let indPath = defTblVw.indexPathForRow(at: cellPosition!)
deletingRowIndPath = indPath!
gotCell = defTblVw.cellForRow(at: indPath!) as! DefaultTableViewCell
}
if panGesture.state == UIGestureRecognizerState.changed
{
let isLeftMoving = panGesture.isLeft(theViewYouArePassing: (gotCell)!)
if isLeftMoving == true
{
self.gotCell?.alpha = self.alphaValue
self.gotCell?.frame.origin.x = (self.gotCell?.frame.origin.x)! - 2.5
self.view.layoutIfNeeded()
self.alphaValue = self.alphaValue - 0.005
}
else // ADD THIS ELSE CASE
{
self.alphaValue = 1.0
self.gotCell?.alpha = 1.0
UIView.animate(withDuration: 0.8,animations: {
self.gotCell?.frame.origin.x = 0
self.view.layoutIfNeeded()
}) { (value) in
}
}
}
if panGesture.state == UIGestureRecognizerState.ended
{
self.alphaValue = 1.0
if (self.gotCell?.frame.origin.x)! < CGFloat(-(defTblVw.frame.size.width - 90))
{
myArr.remove(at: (deletingRowIndPath.row))
defTblVw.beginUpdates()
defTblVw.deleteRows(at: [deletingRowIndPath],with: UITableViewRowAnimation.fade)
defTblVw.endUpdates()
}
else
{
UIView.animate(withDuration: 0.8,animations: {
self.gotCell?.alpha = 1.0
self.gotCell?.frame.origin.x = 0
self.view.layoutIfNeeded()
}) { (value) in
}
}
}
}
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer,shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
return true
}
extension UIPanGestureRecognizer {
func isLeft(theViewYouArePassing: UIView) -> Bool {
let velocityVal : CGPoint = velocity(in: theViewYouArePassing)
if velocityVal.x >= 0 {
return false
}
else
{
print("Gesture went other")
return true
}
}
}
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