我有以下代码:

cell.rightButtons = [MGSwipeButton(title: "Save", backgroundColor:UIColor.redColor(),callback: {
  (sender: MGSwipeTableCell!) -> Bool in
  print("Saved")
  return true
}))]
cell.rightSwipeSettings.transition = MGSwipeTransition.Rotate3D

return cell

这很好用，但我想将标题从“保存”更改为以后删除。尝试了很多不同的方法，但似乎没有用。

最佳答案

如官方项目中所述:MGSwipeTableCell 您可以通过调用委托(delegate)方法来获取按下的按钮:

-(BOOL) swipeTableCell:(MGSwipeTableCell*) cell tappedButtonAtIndex:(NSInteger) index direction:(MGSwipeDirection)direction fromExpansion:(BOOL) fromExpansion;
/**
 * Delegate method to setup the swipe buttons and swipe/expansion settings
 * Buttons can be any kind of UIView but it's recommended to use the convenience MGSwipeButton class
 * Setting up buttons with this delegate instead of using cell properties improves memory usage because buttons are only created in demand
 * @param swipeTableCell the UITableVieCel to configure. You can get the indexPath using [tableView indexPathForCell:cell]
 * @param direction The swipe direction (left to right or right to left)
 * @param swipeSettings instance to configure the swipe transition and setting (optional)
 * @param expansionSettings instance to configure button expansions (optional)
 * @return Buttons array
 **/

在 Swift 中你可以这样写:

func swipeTableCell(cell: MGSwipeTableCell!, tappedButtonAtIndex index: Int, direction: MGSwipeDirection, fromExpansion: Bool) -> Bool {
    if let button = cell.rightbuttons[index] {
        print(button.titleLabel.text)
        button.setTitle("Button Title", forState: UIControlState.Normal)
        ... (do whatever you want with your tapped button..)
    }
}

为了帮助您启动包含在捆绑源中的 MGSwipeDemo 项目，并在 objective-c 中添加这些行，如此屏幕截图所示:

-(BOOL) swipeTableCell:(MGSwipeTableCell*) cell tappedButtonAtIndex:(NSInteger) index direction:(MGSwipeDirection)direction fromExpansion:(BOOL) fromExpansion
{
    ...
    if (direction == MGSwipeDirectionRightToLeft && index == 1) {
        NSLog(@"more pressed");
        id button = cell.rightButtons[index];
        UIButton *pressedBtn = button;
        [pressedBtn setTitle:@"Less" forState:UIControlStateNormal];
        NSLog(@"pressedBtn title: %@",pressedBtn.titleLabel.text);

    }
    ... 
}

附言:更新:添加此部分是为了在评论期间提供帮助:

关于您的个人项目，您必须将任何 bool 变量添加到您的数据源，我举了一个例子(在 Swift 代码中):

Class rowData{
   var title: String! = String()
   var subTitle:String! = String()
   var button1Title : String! = String()
   var button2Title : String! = String()
   var isSaved : Bool! = false
}
var myDataSource : [rowData]! = [rowData]()

因此，当您填充数据源后，您可以使用委托(delegate):

func swipeTableCell(cell: MGSwipeTableCell!, tappedButtonAtIndex index: Int, direction: MGSwipeDirection, fromExpansion: Bool) -> Bool {
...
    if (direction == MGSwipeDirection.RightToLeft && index == 2){ 
        if let _= cell?.rightButtons[index]{
           let cellData:rowData = myDataSource[index]
           if cellData.isSaved { 
                cellData.buttonTitle1 = "Just saved"
                cellData.isSaved = true
           } else {
                cellData.buttonTitle1 = "Save"
                cellData.isSaved = false
           }
           myDataSource[index] = cellData
           // datasource is modified so launch reload data to refresh layout and call cellForRow..
          // There are other softly methods than reloadData to update tableView layout but I use it just for example..
          self.tableView.reloadData()
        } 
    }
...
}

关于swift - 完成后更改滑动按钮标题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/36488796/