ios When I create a class-method,it shows the error: Member reference base type 'Class' is not a structure or union

ios When I create a class-method,it shows the error: Member reference base type 'Class' is not a structure or union

@interface A : UIView{
   NSInteger z_num;
}
+ (void)getNum;
@end
@implementation A
+ (void)getNum{
__weak typeof(self) weakSelf = self;
[[SingletonClass shareInstance] getNum:^(NSInteger status, NSString *num) {
    __strong typeof(weakSelf) strongSelf = weakSelf;
    if (strongSelf) {
        if (status == NET_OK) {
            strongSelf->z_num = [num integerValue]; //error:Member reference base type 'Class' is not a structure or union
        }
    }

}];
}

我试图找到一些方法来解决这个问题,但是没有用,我应该怎么做才能解决这个错误?

当您在 class 方法中引用 self 时,它的类型是 Class 而不是 class 的实例。这就是为什么当你在做 strongSelf 时,它试图在 class 上找到一个实例变量,而不是 class.

的对象