UitableView刷新问题

如何解决UitableView刷新问题

| 我无法刷新tableView，没有任何异常崩溃。我将代码放在下面。请让我知道我哪里出了错。

    -(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
    {
        return 103;
    }

    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
    {
        if(indexPath.row==[self.NewsArray count])
        {
            MoreLoadingViewCell *cell = (MoreLoadingViewCell *)[tableView dequeueReusableCellWithIdentifier:@\"MyCell\"];
            if(cell==nil)
            {
                [[NSBundle mainBundle] loadNibNamed:@\"MoreLoadingViewCell\" owner:self options:nil];
                cell = moreViewCell;
                cell.selectionStyle = UITableViewCellSelectionStyleNone;
                //cell.backgroundView=nil;
            }
            return cell;
        }
        else
        {
            NewsCell *newsCell = (NewsCell *)[tableView dequeueReusableCellWithIdentifier:@\"NewsCell\"];
            if (newsCell == nil) 
            {
                NSLog(@\"create adcell object\");
                [[NSBundle mainBundle] loadNibNamed:@\"NewsCell\" owner:self options:nil];
                newsCell=newsCellobject;

            }

            NewsObjectClass *object;
            object=[self.NewsArray objectAtIndex:indexPath.row];
            Nsstring *title=[object valueForKey:@\"title\"];
            Nsstring *description=[object valueForKey:@\"Description\"];
            Nsstring *dateString=[object valueForKey:@\"NewsDate\"];
            newsCell.secondLabel.text=title;
            newsCell.thirdLabel.text=description;
            NSDateFormatter *dateFormatter=[[NSDateFormatter alloc]init];
            [dateFormatter setDateFormat:@\"YYYY-MM-dd HH:mm:ss\"];
            NSDate  *date=[dateFormatter dateFromString:dateString];
            [dateFormatter setDateFormat:@\"YYYY MMM,dd hh:mm a\"];

            Nsstring *date_new=[dateFormatter stringFromDate:date];
            NSLog(@\"date is------ %@\",date_new);

            newsCell.DateLabel.text=date_new;

            return newsCell;

        }

    }


    - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
        return 1;
    }

    - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
    {
        NSLog(@\"-----------------array count is----------------------- %d\",[self.NewsArray count]);
        if ([self.NewsArray count] == 0) 
        {
            return 0;
        }
        return [self.NewsArray count]+1;

    }

    - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
    {

        if(refreshing)
        {
            NSLog(@\"I am a big BUG,hehe hahahaha\");
            [spinner startAnimating];
            [self performSelector:@selector(getDetails:) withObject:@\"0\" afterDelay:1.0];
            //self.refreshing=NO;
        }


    }

    - (void) scrollViewDidScroll:(UIScrollView *)scrollView{


        tempView.frame = CGRectMake(0,-80 - scrollView.contentOffset.y,320,80);   
        if(scrollView.contentOffset.y < -60)
        {       
            lbl.text = @\"Release to Update\";
        }
        else
        {
            lbl.text = @\"Pull down to Update\";
        }

    }

    - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate
    {

        if(scrollView.contentOffset.y<-60 && !refreshing)
        {
            refreshing=YES;
        }


    }

`

    

解决方法

        发布崩溃日志，您是否尝试过通过放置断点来调试代码？快速浏览代码后，我注意到您没有释放在-（UITableViewCell *）tableView：（UITableView *）tableView cellForRowAtIndexPath：（NSIndexPath *）indexPath方法中初始化的NSDateFormatter * dateFormatter。这将导致巨大的内存泄漏。另外NSLog以下变量检查它们是否具有期望值或零。il1ѭ     ,        尝试使用NSZombieEnabled环境变量并使用设备进行调试。您会找到崩溃的实际原因。