ios - 有没有办法在 UIButton 上执行本地操作？

Question

我正在设置一个表，我有以下代码:

UIButton *done = [[UIButton alloc]initWithFrame:CGRectMake(20, 25, 40, 40)];
[done setImage:[UIImage imageNamed:@"unchecked.png"] forState:UIControlStateNormal];
[done addTarget:self action:@selector(done:) forControlEvents:UIControlEventTouchUpInside];
[cell addSubview:done];
return cell;

这不起作用，因为此按钮仅在此范围内声明，并且我想简单地在单击时更改其图像

Answer 1

在 done: 方法中更改图像。

- (void)done:(id)sender
{
    UIButton *button = (UIButton *)sender;

    [button setImage:[UIImage imageNamed:@"yourImage.png"] 
            forState:UIControlStateNormal];
}