我正在尝试使用重新加载我的表格视图
self.tableView.reloadData()
如果我使用数组加载静态数据源，它可以正常工作。一切正常。但是当我尝试将我的查询函数与解析一起使用时，它会加载一个新单元格，但表格视图单元格的内容不会改变。如果我重新打开应用程序，单元格将正确更新。
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cellIdentifier = "EmpPostTVCellIdentifier"
let cell: EmpPostTVCell? = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as? EmpPostTVCell
//If datasource
if dataSource.isEmpty{
fetchDataFromParse()
print("no posts")
}
let itemArr:PFObject = self.dataSource[indexPath.row]
cell?.companyPostLabel.text = (PFUser.currentUser()?.objectForKey("companyName")!.capitalizedString)! as String
cell?.occupationPostLabel.text = itemArr["occupation"]!.capitalizedString as String
cell?.countryPostLabel.text = itemArr["country"]!.capitalizedString as String
let companyImage: PFFile?
companyImage = PFUser.currentUser()?.objectForKey("profileImageEmployer") as? PFFile
companyImage?.getDataInBackgroundWithBlock({ (data, error) -> Void in
if error == nil{
cell?.companyLogoImage.image = UIImage(data: data!)
}
})
let dateArr = createdByDate[indexPath.row]
let strDate = Settings.dateFormatter(dateArr)
cell?.closingDateLabel .text = strDate
return cell!
}
我正在使用此代码使用 pull 刷新我的 tableviews 内容
func refresh(sender:AnyObject)
{
dispatch_async(dispatch_get_main_queue(), { () -> Void in
self.fetchDataFromParse()
self.tableView.reloadData()
self.refreshControl?.endRefreshing()
})
}
不管有没有 dispatch_asynch 函数，结果都是一样的。它只是添加新的 tableviewcell，但其中的内容不会改变。有什么想法吗？
编辑1：
func fetchDataFromParse() {
// MARK: - JOB POST QUERY
if PFUser.currentUser()?.objectId == nil{
PFUser.currentUser()?.saveInBackgroundWithBlock({ (success, error) -> Void in
let query = PFQuery(className: "JobPost")
//creating a pointer
let userPointer = PFUser.objectWithoutDataWithObjectId(PFUser.currentUser()?.objectId)
query.whereKey("postedBy", equalTo: userPointer)
query.orderByDescending("createdAt")
let objects = query.findObjects()
for object in (objects as? [PFObject])!{
//print(object.objectId)
self.dataSource.append(object)
self.createdByDate.append((object.objectForKey("closingDate") as? NSDate)!)
print(self.dataSource)
print(self.createdByDate)
}
})
} else {
let query = PFQuery(className: "JobPost")
//creating a pointer
let userPointer = PFUser.objectWithoutDataWithObjectId(PFUser.currentUser()?.objectId)
query.whereKey("postedBy", equalTo: userPointer)
query.orderByDescending("createdAt")
let objects = query.findObjects()
for object in (objects as? [PFObject])!{
//print(object.objectId)
self.dataSource.append(object)
self.createdByDate.append((object.objectForKey("closingDate") as? NSDate)!)
print(self.dataSource)
print(self.createdByDate)
}
}//end of PFUser objectID == nil else clause
}