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Not exactly what you may have intended, but still a possible solution: Using an app like Wifi QR Code Generator WiFi QR Share you can generate a QR Code of your friend's Wifi connection, print it, …

If you're talking about your own WiFi network, a network address must be agreed upon by your router and your Android device. This is usually done via DHCP, with your router managing available IP addre …

Your issue is caused by Captive Portal¹ Check kicking in and not permitted through by AFWall+. So if you can live without that auto-detection, you could simply disable it: # check what the original …

Android automatically connects to all WiFi networks it has configured. So basically, if you do not want that to happen, you could either turn WiFi off (which would also disable to connect to the other …

There are several Hotspot apps around which can automate this. An example would be WiFi Web Login. I didn't check this one (but used a similar some time ago): As soon as the Wifi comes in reach, your …

Your mentioning of busybox use let's me assume your device(s) is/are rooted, so you could give the Wireless MAC Changer a try. Didn't try it myself, though, as I have no need to ;)

While I agree with Matt on the usefulness of Tasker, as to my current knowledge you'd have to configure all your Wifi zones manually here based on their location (e.g. via "Cell Near", which leverages …

Not a real solution as to the underlying problem -- but a possible work-around involving Tasker (or a similar automation app which could do the same): Condition: On Startup If Wi-Fi On Task: Wi-F …

Simple answer: Android does not support Ad-Hoc networks by default (see also the ad-hoc-networks tag-wiki, which tells you this and more). This means, you will need to root your devices, and use an ap …

If you can skip the part with the "standard music player", there would be some solutions involving DLNA/uPnP. This would require an uPnP compatible device at your speakers end (e.g. a fitting programm …

As it turns out, the problem was caused by deleting wpa_supplicant. Wikipedia can offer a little insight on what that means: In addition to being a full-featured WPA2 supplicant, it also implement …

Unfortunately, there's no native method for this (at least to my knowledge). But WiFi Switcher does exactly that. According to its description: The tool checks the registered WIFI networks every 2 …

As no "bullet-proof" system is required here, and at least some level of trust assumed, possible solutions hide behind the buzz... ahem, key-words kiosk-mode and child-protection. In short: you create …

Depending on how comfortable it should be, what Android version is in use, and whether root is available, there might be multiple approaches: turn WiFi off completely, and just activate it for check …

That's a pre-destined case for apps like OpenSignal, which are designed for mapping signals around you. Network Signal Info offers it as well. Both tools can be used to get a coverage map for WiFi and …