WiFi configuration profile for various platforms

iOS & MAC

We can use the .mobileconfig provisioning file for managing the profile which includes 

Android devices 

Based on some searches, the way the Android profile management work is using the Profile management APIs mainly

There are few apps which does this in combination with the server. 

The APIs are http://developer.android.com/reference/android/net/wifi/WifiConfiguration.html

Almost all classes for Management is available from API level 1 onwards (or tow be safe we can assume API level 10 onwards with all its functionality).  Except the WiFiEnterpriseConfig (which is from 18 and above). 

Many of the well known apps which employ the remote management of the WIFI profile utilises an app on the device. For e.g. TeamViewer https://play.google.com/store/apps/details?id=com.teamviewer.quicksupport.market

Also there are a set of apps in the store which takes input from user for the one time configuration of WIFI and auto connect to it when it comes in range. Much similar to how our WFF Android app do. 

Also, we can use the QR code mechanism to generate the WiFI settings. We can encode the WIFI settings in a QR code and distribute. There are a set of QR code generator SDKs available too. Once the WiFi Details are obtained from the QR code, we can provide option to connect to the WiFi using the available APIs. Barcode scanner app for Android already does this. http://www.addictivetips.com/mobile/connect-to-wifi-networks-by-scanning-qr-codes-with-barcode-scanner-android/