問題描述

當用戶連接到 iOS 應用程序中的特定 WiFi 網絡時，是否有任何方法可以捕獲發生的事件.即使這可以使用任何不需要超級用戶權限(越獄)的私有庫來實現，也可以.我只是想捕捉連接的 SSID 的變化事件.

Is there any way to capture the event occurs when a user connects to a particular WiFi network in iOS app. It is fine even if this can be achieved using any private library which doesn't require super user privileges (jail break). I just want to capture the changing event of the connected SSID.

推薦答案

我建議簡單地使用 Larme 發布的內容，并設置一個 NSTimer 每隔一秒左右檢查一次，如果您檢測到當前網絡的 SSID 是什么改變，只需做你需要做的任何事情.請記住，更改 WiFi 網絡并不是一蹴而就的事情，因此擁有 1 秒的分辨率也不錯

I would recommend simply using what Larme posted, and setting up an NSTimer to check every second or so, what the SSID of your current network is, if you detect a change, simply do whatever you need to do. Keep in mind, changing WiFi networks is not something that happens instantaneously, so having a 1 second resolution is not bad

在 applicationDidFinishLoading

NSTimer *ssidTimer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(fetchSSIDInfo) userInfo:nil repeats:YES];

在 AppDelegate 中

- (id)fetchSSIDInfo {
     NSArray *ifs = (__bridge_transfer id)CNCopySupportedInterfaces();
     NSLog(@"Supported interfaces: %@", ifs);
     id info = nil;
     NSString *ifnam = @"";
     for (ifnam in ifs) {
         info = (__bridge_transfer id)CNCopyCurrentNetworkInfo((__bridge CFStringRef)ifnam);
         NSLog(@"%@ => %@", ifnam, info);
         if (info && [info count]) { break; }
     }
     if ([info count] >= 1 && [ifnam caseInsensitiveCompare:prevSSID] !=  NSOrderedSame) {
          // Trigger some event
          prevSSID = ifnam;
     }

     return info;
}

類似的東西.我無法檢查代碼是否沒有錯字，因為我不在 Mac 前，但應該不會太不同

Something like that. I can not check if code is typo free as I am not in front of a mac, but it should not be too different

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