更新标签

Question

-(UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    static NSString *cellIdentifier = @"cell"; 

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; 

    if (cell == nil) { 
     cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; 
    } 

// NSLog(@"msgcnt123 %@\n",[messageCount objectAtIndex:indexPath.row]); 

    NSArray *seperateArray = [[clist objectForKey:[[clist allKeys]objectAtIndex:indexPath.row]]componentsSeparatedByString:@"@"]; 

    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; 
// NSLog(@"key %@\n",[[clist allKeys]objectAtIndex:indexPath.row]); 

    cell.textLabel.text = [seperateArray objectAtIndex:0]; 
// cell.textLabel.text = [contactlist objectAtIndex:indexPath.row]; 
    cell.selectionStyle = UITableViewCellSelectionStyleNone; 

// NSLog(@"sep %@\n",seperateArray); 


    if (![[seperateArray objectAtIndex:1] isEqualToString:@"0"]) { 
     NSLog(@"msgCount %@\n",[seperateArray objectAtIndex:1]); 
     lblCnt = [[UILabel alloc]initWithFrame:CGRectMake(260, 13, 20, 20)]; 
     lblCnt.backgroundColor = [UIColor lightGrayColor]; 
     lblCnt.textColor = [UIColor blackColor]; 
     lblCnt.text = [seperateArray objectAtIndex:1]; 
     lblCnt.textAlignment = UITextAlignmentCenter; 
     lblCnt.layer.masksToBounds = YES; 
     lblCnt.layer.cornerRadius = 2.0f; 
     [cell.contentView addSubview:lblCnt]; 
     lblCnt.tag = 1000; 

    } 
    else 
    { 
     /*NSLog(@"msgCount1 %@\n",[seperateArray objectAtIndex:1]); 
     [lblCnt removeFromSuperview]; 
     lblCnt.hidden = YES;*/ 
     for (UIView *view in [cell.contentView subviews]) 
     { 
      if (view.tag == 1000) 
      { 
       [view removeFromSuperview]; 
      } 
     } 

    } 

    return cell; 
} 

我在UITableView.The标签每个contact.My视图名称显示接收到的邮件数的标签中显示联系人的名字是chatViewcontroller.If我在认为标签计数不更新。例如：对于联系人姓名“约翰”标签计数是“2”。当约翰收到一条消息，标签计数应该更新为“3”。它不会发生这种情况。如果我从另一个视角移动，它会更新。是否有可能更新tableView chatviewController本身？

Answer 1

确保你更新你的数据源（clist），然后调用[tableview reloadData]