objective-c - 更改块中的实例变量

Question

我对如何更改块内的实例变量感到很困惑。

接口文件（.h）：

@interface TPFavoritesViewController : UIViewController {
    bool refreshing;
}

实施：

__weak TPFavoritesViewController *temp_self = self;
refreshing = NO;
[myTableView addPullToRefreshWithActionHandler:^{
    refreshing = YES;
    [temp_self refresh];
}];

正如您可能猜到的那样，当我尝试更改块内的刷新 ivar 时，我会收到一个保留周期警告。我将如何做到这一点而不会出错？

Answer 1

Your assignment to refreshing is an implicit reference to self, it is shorthand for:

self->refreshing = YES;

hence the cycle warning. Change it to:

temp_self->refreshing = YES;