ios - UITableViewCell 添加按钮

Question

我想在自定义单元格中添加一些按钮，当我点击按钮时，其他按钮也会发生变化。如何在不更改其他按钮的情况下单击一个按钮？

enter code here
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *identifier = @"cell";
    SViewTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
    if (cell == nil) {
        cell = [[SViewTableViewCell alloc]initWithStyle:UITableViewCellStyleDefault   
        reuseIdentifier:identifier];
    }
    cell.cellButton.tag = indexPath.row;
    [cell.cellButton addTarget:self action:@selector(clickMe:) 
         forControlEvents:UIControlEventTouchUpInside];

    return cell;
}

- (void)clickMe:(UIButton *)sender
{
    SViewTableViewCell *cell = (SViewTableViewCell *)[[sender superview]superview];
    NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];

    if (sender.tag == 0) {
        if ([sender.titleLabel.text isEqualToString:openStr]) {
             [sender setTitle:closeStr forState:UIControlStateNormal];
        }
        else{
             [sender setTitle:openStr forState:UIControlStateNormal];
        }
    }
}

Answer 1

我认为这是关于 tableView 单元格重用的问题，您应该在 cellForRow 中设置按钮标题以保持重用单元格具有正确的标题，您应该尝试这样的代码:

openDict 是您应该定义的 NSMutableArray，这只是一个示例。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *identifier = @"cell";
    SViewTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
    if (cell == nil) {
        cell = [[SViewTableViewCell alloc]initWithStyle:UITableViewCellStyleDefault   
        reuseIdentifier:identifier];
        [cell.cellButton addTarget:self action:@selector(clickMe:) 
         forControlEvents:UIControlEventTouchUpInside];
    }

    NSString *key = [NSString stringWithFormat:@"%d-%d", indexPath.row, indexPath.section];        
    if (openDict[key] && [openDict[key] boolValue]) {
        [sender setTitle:openStr forState:UIControlStateNormal];
    }
    else{
        [sender setTitle:closeStr forState:UIControlStateNormal];
    }

    cell.cellButton.tag = indexPath.row;
    return cell;
}

- (void)clickMe:(UIButton *)sender
{
    SViewTableViewCell *cell = (SViewTableViewCell *)[[sender superview]superview];
    NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];

    if (sender.tag == 0) {
        NSString *key = [NSString stringWithFormat:@"%d-%d", indexPath.row, indexPath.section];        
        if (openDict[key] && [openDict[key] boolValue]) {
             openDict[key] = @(0);
             [sender setTitle:closeStr forState:UIControlStateNormal];
        }
        else{
             openDict[key] = @(1);
             [sender setTitle:openStr forState:UIControlStateNormal];
        }
    }
}