按钮单击时的tableViewController

Question

我有一个tableViewController,单元格包含一个按钮和一个标签.Person当用户点击按钮时,我需要获取单元格的文本(实际上是单元格的对象).

当用户点击按钮时,执行以下方法;

-(void) buttonOfCellClicked{
      // here i need to access the `Person` object that the user clicked
 }

我该如何编写这段代码？

编辑:

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

Person*person = [personsArr objectAtIndex:indexPath.row];

static NSString *CellIdentifier = @"Cell";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
    cell =  [[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] ;

label = [[UILabel alloc]initWithFrame:CGRectMake(15, 5, 75, 60)];
label.text =person.firstName;   
[cell addSubview:label];
UIButton *button= [UIButton buttonWithType:UIButtonTypeRoundedRect];

[button addTarget:self action:@selector(buttonOfCellClicked) forControlEvents:UIControlEventTouchUpInside];

[cell.contentView addSubview:button];


}

Answer 1

id findAncestor(UIView *view, Class class) {
    while (view && ![view isKindOfClass:class])
        view = [view superview];
    return view;
}

- (void)buttonOfCellClicked:(UIButton *)button
{
    UITableViewCell *cell = (UITableViewCell *)findAncestor(button, [UITableViewCell class]);
    UITableView *table = (UITableView *)findAncestor(cell, [UITableView class]);
    NSIndexPath *path = [table indexPathForCell:cell];
    if (!path)
        return;
    Person *person = [personsArr objectAtIndex:path.row];
    // do whatever with person
}