我有一个UITabBarController
有 3 个选项卡(tab1,tab2,tab3)。每个选项卡有 1 个 UITableView,每个表格视图的每一行都有一个按钮。现在我希望用户单击 tab2 上的任何按钮,并且 tab1 中的按钮应该已经更改了图像。我可以在 tab1 中获取按钮的标签,但是当单击 tab2 中的按钮时,我不知道如何在 tab1 中获取按钮的标签。我怎样才能做到这一点?
非常感谢。
这是我在 tab1 中创建 tableview 的代码:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [_tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
UIButton *market= [UIButton buttonWithType:UIButtonTypeCustom];
[market setFrame:CGRectMake(200, 6, 30, 30)];
market.tag = 4000;
[market addTarget:self action:@selector(marketPressedAction:) forControlEvents:UIControlEventTouchDown];
[cell.contentView addSubview:market];
UILabel *pricelabel = [[UILabel alloc] initWithFrame:CGRectMake(80, 0, 80, 30)];
pricelabel.backgroundColor = [UIColor clearColor];
pricelabel.font = [UIFont fontWithName:@"Helvetica" size:16];
pricelabel.font = [UIFont boldSystemFontOfSize:16];
pricelabel.textColor = [UIColor darkGrayColor];
pricelabel.tag = 3000;
pricelabel.textAlignment = NSTextAlignmentRight;
[cell.contentView addSubview: pricelabel];
[pricelabel release];
}
UIButton *marketButton = (UIButton*)[cell.contentView viewWithTag:4000];
[marketButton setTag:indexPath.row];
if([sellingArray count]>0)
{
if([[sellingArray objectAtIndex:indexPath.row] isEqualToString:@"0"]) // nothing
{
[marketButton setSelected:NO];
[marketButton setImage:[UIImage imageNamed:@"Marketplace.png"] forState:UIControlStateNormal];
marketButton.enabled = YES;
}
else if([[sellingArray objectAtIndex:indexPath.row] isEqualToString:@"2"]) // marketplace
{
[marketButton setSelected:YES];
[marketButton setImage:[UIImage imageNamed:@"MarketplaceSelect.png"] forState:UIControlStateNormal];
marketButton.enabled = YES;
}
}
[market setTag:indexPath.row];
if([priceNewArray count]> 0)
{
UILabel *pricelbl = (UILabel*)[cell.contentView viewWithTag:3000];
pricelbl.text =[NSString stringWithFormat:@"$%@",[priceNewArray objectAtIndex:indexPath.row]];
if ([sellingArray count]>0)
{
if([[sellingArray objectAtIndex:indexPath.row] isEqualToString:@"2"])
{
pricelbl.hidden = NO;
}
else if([[sellingArray objectAtIndex:indexPath.row] isEqualToString:@"0"])
{
pricelbl.hidden = YES;
}
}
}
return cell;
}
我尝试使用 [tableview reloadData] 但它只重新加载 UILabel,当我比较它们时 UIButton 不会改变图像。