如何在uitableview ios中获取viewwithtag的UIButton的索引 [英] How to get index of UIButton that viewwithtag in uitableview ios

问题描述

我有一个问题:我想在 tableview 中获取 UIButton 的索引.我创建的 uitableview 每行有 2 个 uibutton，但是当我点击 uibutton 时，它的索引不正确.代码创建 UITableview :

I have a problem: I want to get index of UIButton in tableview. I created uitableview has 2 uibutton in each row, but when i click on uibutton, it get index incorrect. Code create UITableview :

    - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    NSLog(@"AllItemsArrayarray: %@", temp);
    return [temp count];
}

cellForRowAtIndexPath 函数

    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{

    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = (UITableViewCell *)[_tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (nil == cell) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];

        UIButton *market = [UIButton buttonWithType:UIButtonTypeCustom];
        [market setFrame:CGRectMake(200, 6, 30, 30)];
        [market setTag:4000];
        [market addTarget:self action:@selector(marketPressedAction:) forControlEvents:UIControlEventTouchDown];
        [cell.contentView addSubview:market];
    }

    UIButton *marketButton = (UIButton*)[cell.contentView viewWithTag:4000];
  if([sellingArray count]>0)
{
    NSLog(@"sellingArray %@",sellingArray);
    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;

    }
}

    return cell;
}

和marketPressedAction函数

- (void)marketPressedAction:(id)sender
{
    buttonPressed = (UIButton *)sender;
    buttontag = buttonPressed.tag ;
    NSLog(@"Market button click at row %d",buttontag);
}

当表格有 5 行时，我点击按钮，它显示错误:

When table has 5 row, I click on button, it shows error:

-[__NSArrayM objectAtIndex:]: index 4000 beyond bounds [0 .. 4]'

推荐答案

you set tag using indexpath.row

you set tag using indexpath.row

 UIButton *market ;

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

              market = [UIButton buttonWithType:UIButtonTypeCustom];
                [market setFrame:CGRectMake(200, 6, 30, 30)];
                [market setTag:indexPath.row];
                [market addTarget:self action:@selector(marketPressedAction:) forControlEvents:UIControlEventTouchDown];
             if([sellingArray count]>0)
       {
    NSLog(@"sellingArray %@",sellingArray);
    if([[sellingArray objectAtIndex:indexPath.row] isEqualToString:@"0"]) // nothing
    {

        [market setSelected:NO];
        [market setImage:[UIImage imageNamed:@"Marketplace.png"] forState:UIControlStateNormal];
        market.enabled = YES;

    }
    else if([[sellingArray objectAtIndex:indexPath.row] isEqualToString:@"2"])  // marketplace
    {
        [market setSelected:YES];
        [market setImage:[UIImage imageNamed:@"MarketplaceSelect.png"] forState:UIControlStateNormal];
        market.enabled = YES;

    }
                [cell.contentView addSubview:market];

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