问题：Xcode-nehelper sent invalid result code [1] for Wi-Fi information request 待解决

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问题内容如下：

--- commonInit ---
[] nehelper sent invalid result code [1] for Wi-Fi information request

问题原因：

Answer1:

Check out WWDC 19 session 713, It happenes because in iOS13 in order to get WiFi details you should allow location permission, each time you try to pull CNCopyCurrentNetworkInfo data from CNCopySupportedInterfaces array you will get this log.

silly solution may be to try to enable location permission and you will not get this error anymore

Answer2:

I’ve managed to make it on iOS 13.3. Here goes how I make it.

The official documentation of CNCopyCurrentNetworkInfo says that the function is providing real SSID/BSSID of current connection if the app

has an “Access WiFi Information Entitlement” (see here) and
is one of 1) Core Location , 2) using NEHotspotConfiguration to connect current Wi-Fi Network, and 3) VPN app.
I’ve already configured “Access WiFi Information Entitlement”, therefore only meet the first requirement. It does work on iOS 13.1 but doesn’t work on iOS 13.3. To meet the latter requirement, I decided to include the Core Location in my APP. I’ve checked the code in here but I gotta to add some constants below on my app’s Info.plist to avoid error.

    <key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
    <string>Application requires user’s location for better user experience.</string>
    <key>NSLocationAlwaysUsageDescription</key>
    <string>Application requires user’s location for better user experience.</string>
    <key>NSLocationWhenInUseUsageDescription</key>
    <string>Application requires user’s location for better user experience.</string>

I also needed to call

manager.requestWhenInUseAuthorization()

before

manager.requestAlwaysAuthorization()

to popup the dialog when user launch the app for the first time.

User needed to allow the permission at the first launch. If it is allowed as “Always”, the app can use CNCopyCurrentNetworkInfo without error.

Answer3:

It eventually turned out, that a third party framework that my app uses, launches those calls to CNCopyCurrentNetworkInfo.

After I added WiFi access capabilities as described here to the app itself the error message disappeared

问题分析

增加"Access WiFi Information" 权限后，网上搜索说这个方法可以，但实际测验依然没有解决

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