运行斯坦福的CS193p Smashtag应用程序时_BSMachError [英] _BSMachError while running Stanford's CS193p Smashtag app

问题描述

我从课程网站下载了Smasthag演示应用程序。项目构建良好（在Twitter，TwitterRequest等类的小变化之后，因为我使用最新的Xcode 7b4）并且在模拟器上工作正常（我还必须添加 NSAppTransportSecurity 键到 info.plist ），但不在设备上 - 它不会提取推文。我在带有iOS 9 Public Beta的iPhone 6和带有iOS 8.4的iPad 2上进行了测试。此外，当app在模拟器中运行并且我更改了hashtag以进行搜索时，整个tableView会重新加载新的推文，但在控制台中我得到了这个：

I downloaded the Smasthag demo app from course's site. Project builds fine (after small changes in Twitter, TwitterRequest etc. classes, because I use the latest Xcode 7b4) and works fine on simulator (I also had to add NSAppTransportSecurity key to info.plist), but not on a device - it doesn't fetch tweets . I tested it on both iPhone 6 with iOS 9 Public Beta and iPad 2 with iOS 8.4. Moreover, when app is running in the simulator and I change hashtag to search, whole tableView reloads with new tweets, but in the console I get this:

2015-07-23 03:24:15.560 Smashtag[25991:4344251] _BSMachError: (os/kern) invalid capability (20)
2015-07-23 03:24:15.560 Smashtag[25991:4344251] _BSMachError: (os/kern) invalid name (15)

App仍然运行良好，但是这个错误让我感到困惑。我对谷歌中的这个_BSMachError没什么好处的（只有一条孤独的印尼语推文）。我不知道为什么app不能在设备上获取推文。

App still runs fine, but this error bugs me. I couldn't fine anything about this _BSMachError in google (just one lonely Indonesian tweet). I can't also get why app doesn't fetch tweets on a device.

推荐答案

要解决此问题，您应该设置区域设置到en_US。

To fix this issue you should set locale to en_US.

将Tweet.swift中的私有扩展名asTwitterDate更改为以下内容以解决非en_US设备上的问题。

Change the private extension asTwitterDate in Tweet.swift to the following to fix issue on non en_US devices.

...
private extension String {
  var asTwitterDate: NSDate? {
    get {
        let dateFormatter = NSDateFormatter()
        dateFormatter.dateFormat = "EEE MMM dd HH:mm:ss Z yyyy"
        dateFormatter.locale = NSLocale(localeIdentifier: "en_US")
        let createdAt = dateFormatter.dateFromString(self)
        return createdAt
    }
  }
}

此后，您的应用程序应加载并正确显示所有数据。

After this your application should load and show all data correctly.

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