让 MBProgressHUD 调用返回值的方法

发布于 2024-11-11 03:30:47 字数 245 浏览 1 评论 0原文

我想将 MBProgressHUD 与...一起使用

[HUD showWhileExecuting:@selector(fetchDomainStatus) onTarget:self withObject:nil animated:YES];

，但我需要调用一个返回domainStatus（int）的方法（fetchDomainStatus）。

如果没有某种类变量，我该如何做到这一点？

原文

I would like to use MBProgressHUD with...

[HUD showWhileExecuting:@selector(fetchDomainStatus) onTarget:self withObject:nil animated:YES];

but I need to call a method (fetchDomainStatus) that returns the domainStatus (an int).

How can I do that without somekind of class variable?

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

温暖的光 2024-11-18 03:30:47

如果您可以使用块（即您的应用程序是 iOS 4.0+），您可以执行类似的操作，并且仍然保留所有线程魔法：

MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];

dispatch_async(dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_LOW, 0), ^{
    // Do the task in the background
    int status = [self fetchDomainStatus];
    // Hide the HUD in the main tread 
    dispatch_async(dispatch_get_main_queue(), ^{
        [MBProgressHUD hideHUDForView:self.view animated:YES];
    });
});

If you can use blocks (i.e., your app is iOS 4.0+) you can do something like this, and still have all threading magic preserved:

MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];

dispatch_async(dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_LOW, 0), ^{
    // Do the task in the background
    int status = [self fetchDomainStatus];
    // Hide the HUD in the main tread 
    dispatch_async(dispatch_get_main_queue(), ^{
        [MBProgressHUD hideHUDForView:self.view animated:YES];
    });
});

回复收藏 0 原文

撑一把青伞 2024-11-18 03:30:47

可能您想要做的是这样的：

[HUD show:YES];
int status = [self fetchDomainStatus];
[HUD hide:YES];

否则，使用“withObject”参数传递一个指向可以存储返回值的对象（可能是 NSValue 对象）的指针。如果您这样做，则必须修改 fetchDomainStatus 以获取 NSValue* 参数。

Probably what you want to do is this:

[HUD show:YES];
int status = [self fetchDomainStatus];
[HUD hide:YES];

Otherwise, use the "withObject" parameter to pass in a pointer to an object (probably an NSValue object) where you can store the return value. You'd have to modify fetchDomainStatus to take an NSValue* parameter if you did it like that.

回复收藏 0 原文

~没有更多了~