Swift：如何在 Cell 中使用删除和共享按钮？答案

【问题标题】：Swift : How can I use delete and share button in Cell?Swift：如何在 Cell 中使用删除和共享按钮？
【发布时间】：2015-06-22 01:30:03
【问题描述】：

我正在使用 commitEditingStyle 进行删除。我在单元格中添加了共享按钮。现在我只是在单元格中使用共享按钮。我想在单元格中使用这两个。我应该使用像我的“分享”按钮这样的自定义删除按钮吗？我可以为此做些什么？

我的代码在这里：

override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
        if editingStyle == UITableViewCellEditingStyle.Delete {
            // Delete the row from the data source

            var object: PFObject =  self.noteObjects.objectAtIndex(indexPath.row) as! PFObject
            object.delete()

            self.fetchAllObjectsFromLocalDatastore()
            self.fetchAllObjects()
            tableView.reloadData()
            //tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
        }
    }

    override func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]?
    {

        var shareAction = UITableViewRowAction(style: .Normal, title: "Share") { (action: UITableViewRowAction!, indexPath: NSIndexPath!) -> Void in

            let object: PFObject = self.noteObjects[indexPath.row] as! PFObject
            let firstActivityItem = object["title"] as! String
            let secondActivityItem = object["text"] as! String

            let activityViewController = UIActivityViewController(activityItems: [firstActivityItem, secondActivityItem], applicationActivities: nil)

            self.presentViewController(activityViewController, animated: true, completion: nil)


        }

        shareAction.backgroundColor = UIColor.blueColor()

        return [shareAction]

    }

【问题讨论】：

标签： ios swift uitableview xcode6

【解决方案1】：

在editActionsForRowAtIndexPath中返回多个UITableViewRowAction

override func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]?
{
    var shareAction = UITableViewRowAction(style: .Normal, title: "Share") { 
        (action: UITableViewRowAction!, indexPath: NSIndexPath!) -> Void in
        let object: PFObject = self.noteObjects[indexPath.row] as! PFObject
        let firstActivityItem = object["title"] as! String
        let secondActivityItem = object["text"] as! String

        let activityViewController = UIActivityViewController(activityItems: [firstActivityItem, secondActivityItem], applicationActivities: nil)

        self.presentViewController(activityViewController, animated: true, completion: nil)
    }

    var deleteAction = UITableViewRowAction(style: .Destructive, title: "Delete") {
        (action: UITableViewRowAction!, indexPath: NSIndexPath!) -> Void in
        //...
    }

    return [deleteAction, shareAction]
}

【讨论】：

【解决方案2】：

好的，我解决了这个问题。我也将自定义单元格用于删除操作，并且有效。

这是在单元格中删除和共享操作的最终代码：

override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
}

override func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]?
{

    var shareAction = UITableViewRowAction(style: .Normal, title: "Share") { (action: UITableViewRowAction!, indexPath: NSIndexPath!) -> Void in

        let object: PFObject = self.noteObjects[indexPath.row] as! PFObject
        let firstActivityItem = object["title"] as! String
        let secondActivityItem = object["text"] as! String

        let activityViewController = UIActivityViewController(activityItems: [firstActivityItem, secondActivityItem], applicationActivities: nil)

        self.presentViewController(activityViewController, animated: true, completion: nil)


    }

    var deleteAction = UITableViewRowAction(style: .Normal, title: "Delete") { (action: UITableViewRowAction!, indexPath: NSIndexPath!) -> Void in

        var object: PFObject =  self.noteObjects.objectAtIndex(indexPath.row) as! PFObject
        object.delete()

        self.fetchAllObjectsFromLocalDatastore()
        self.fetchAllObjects()
        tableView.reloadData()

    }

    shareAction.backgroundColor = UIColor.blueColor()

    return [deleteAction,shareAction]

}

【讨论】：