Question

使用swift3在xcode8上运行

以下是来自AppDelegate.swift的代码

from time import sleep

f = open('testfile.txt', 'w', buffering=1)
while True:
    f.write("A, B, C, D, E\n")
    sleep(1)

当我收到通知并点击它时，我的调试区域将如下所示

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
    print("==== didReceiveRemoteNotification ====")
    print(userInfo)
}

我的问题是我如何使用userInfo从AnyHashable（“url”）获取数据，这是“www.google.com”？

我试试

==== didReceiveRemoteNotification ====
[AnyHashable("type"): order, AnyHashable("aps"): {
    alert = "[TestMessage]";
    badge = "<null>";
    category = alert;
    sound = default;
}, AnyHashable("url"): http://www.google.com]

但调试区域的输出是

print(userInfo[AnyHashable("url")])

Answer 1

尝试print(userInfo[AnyHashable("url")] as? String ?? "")或者您可以将其转换为URL

Answer 2

if let url = userInfo["url"] as? String {
    //do whatever you need with the url
}

Answer 3

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
    if let aps = userInfo["aps"] as? NSDictionary {
        print(aps)
        let alert = (aps.object(forKey: "alert") as? String)!
    }

    let url = userInfo?["url"] as? String {
        print(url)
    }
}

如何从didReceiveRemoteNotification获取数据返回数据？

3 个答案: