android - wifimanager not working on tabs? -

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So I'm currently developing an app for which MAC address (for security purpose) is required, however when I have sent .apk

This is the code I used to get the Mac

WifiManager wimanager = (WifiManager) cont.getSystemService (Context.WIFI_SERVICE) ; String macAddress = wimanager.getConnectionInfo (). GetMacAddress ();


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