get wifi's scanned SSID list in iOS using Swift
It is officially not possible with any language (objective-c and swift). You can look at the answer given by an official apple stuff in the following url.
https://forums.developer.apple.com/thread/13157
where the apple stuff says :
It's not possible to do this in any general way.
Also, you can take a look at the answer given by the same apple stuff in the following link :
https://forums.developer.apple.com/message/138998#138998
where he/she also says :
NEHotspotHelper was not designed as a general purpose ‘list nearby Wi-Fi networks’ API.
You can only get your current SSID.