swift - 无法读取操作扩展中的共享文件

我有一个Safari的操作扩展名，需要读取在我的应用程序组中共享的文件。代码如下：

func doneWithResults(resultsForJavaScriptFinalizeArg: [NSObject: AnyObject]?) {
    let fileManager = NSFileManager()
    let groupUrl = NSFileManager.defaultManager().containerURLForSecurityApplicationGroupIdentifier("group.App")
    let sharedContainerPathLocation = groupUrl?.path

    var text = ""
    let textPath = sharedContainerPathLocation! + "/test.txt"
    if let content = fileManager.contentsAtPath(textPath) {
        text = String(data: content, encoding: NSUTF8StringEncoding)!
    }
    // Code to tell that we're complete here, not important for showing the bug.
}

在模拟器上运行这个程序完全可行。但是，当在一个真正的设备上运行它时，当单击操作扩展名并返回这些日志时，我正在查找的文件也不会发生任何变化：

Sep  1 13:29:29 iPhone ReportCrash[16049] <Notice>: Formulating report for process[16048] Action
Sep  1 13:29:29 iPhone MobileSafari[15761] <Warning>: plugin App.Action interrupted
Sep  1 13:29:29 iPhone MobileSafari[15761] <Warning>: plugin App.Action invalidated
Sep  1 13:29:29 iPhone ReportCrash[16049] <Warning>: report not saved because it is non-actionable

这是已知的错误吗？我已经向苹果报告过了，但如果有解决办法，我会很乐意使用的。

最佳答案

let sharedContainer = fileManager
    .containerURLForSecurityApplicationGroupIdentifier(
        "<YOUR APP GROUP IDENTIFIER HERE>")

let dirPath = sharedContainer?.path
sharedFilePath = dirPath?.stringByAppendingPathComponent(
        "sharedtext.doc")

if fileManager.fileExistsAtPath(sharedFilePath!) {
    let databuffer = fileManager.contentsAtPath(sharedFilePath!)
    textView.text = NSString(data: databuffer!,
    encoding: NSUTF8StringEncoding)
}

sharedDefaults = NSUserDefaults(
suiteName: "<YOUR APP GROUP IDENTIFIER HERE>")

let switchSetting = sharedDefaults?.boolForKey("switch")

if let setting = switchSetting {
    mySwitch.on = setting
}

关于swift - 无法读取操作扩展中的共享文件，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/32330599/