如何在顶部状态栏中显示加载指示器 [英] How to show the loading indicator in the top status bar

问题描述

我注意到一些应用程序，如Safari和Mail，当他们正在访问网络时，在状态栏（手机最顶部的栏）中显示一个加载指示器。有没有办法在SDK应用程序中做同样的事情，或者这是一个只有苹果的事情？

I have noticed that some apps like Safari and Mail show a loading indicator in the status bar (the bar at the very top of the phone) when they are accessing the network. Is there a way to do the same thing in SDK apps, or is this an Apple only thing?

推荐答案

它在UIApplication：

It's in UIApplication:

[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;

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