ios - 继承UIView的类里创建一个tableView，然而对应的tableFooterView不能响应事件是为什么？

Question

我继承了UIView的类里创建了一个tableView，当我在这个UIView里设置按钮的事件能成功：

- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section{
    self.customView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.bounds.size.width, 80)];
    self.myButton = [[UIButton alloc] initWithFrame:CGRectMake(100, 20, 100, 40)];
    self.myButton.backgroundColor = [UIColor redColor];
    [self.myButton addTarget:self action:@selector(doButonAction) forControlEvents:UIControlEventTouchUpInside];
    [self.customView addSubview:self.myButton];
    
    return self.customView;
}

但是，我把按钮公开，然后再controller里设置事件就不行。这是什么原因？

View:
@property (strong, nonatomic) UIButton *myButton;


controller:

CustomView *cv = [[CustomView alloc] initWithFrame:self.view.bounds ];
[cv.myButton addTarget:self action:@selector(doButtonAction11) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:cv];

Answer 1

Cut a breakpoint and see. When you addTarget, was myButton created? Does it have memory?

Answer 2

It is recommended that you create a block and call it when clicked

Answer 3

You need to make sure myButton is initialized.

Answer 4

I have never tried passing events like this. It is recommended that you use block/delegate/notice. Personally, I think the object is not created. You can print it to see if the controller object exists.

Answer 5

It’s possible that the foot of your tableview has not been given a height, so you can’t see it clearly.