错误如下，ListViewController.m:135:10:

Question

错误IDListViewController.m:135:10: Capturing 'self' strongly in this block is likely to lead to a retain cycle开了ARC    [_tableView setPullToRefreshHandler:^{         [self dataDidRefresh:nil];     }];

Answer 1

你把self转换一下加上block字段之后就不会被retain了

__block ViewController *controller = self;
[_tableView setPullToRefreshHandler:^{
[controller dataDidRefresh:nil];
}];

Answer 2

在ARC下不用__block 而是用 __weak 为了避免出现循环引用