在按钮上单击tableViewController [英] tableViewController on button click

问题描述

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

I have a tableViewController, the cells contains a button and a label. I need to get the text of the cell (actually the object of the cell Person) when the user clicks on the button.

当用户单击按钮时，将执行以下方法；

When the user clicks on the button the following method gets executed;

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

我如何编写此代码?

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

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

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];


}

推荐答案

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
}

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