How to configure a static IP address netmask gateway programmatically on Android 3 x or 4 x

Question

Other than android.provider.Settings, the system makes use of the setting. As the setting is configured per Access Point SSID on Android 3.x and 4.x. Can I change the settings on a single SSID in the same way as Android 2.3 does?

Answer 1

I realise there is no API for those settings per SSID on 3.x or 4.x. As a result, I examined the source code and discovered that each SSID's configuration is saved in android.net.wifi.WifiConfiguration, which is obtained via android.net.wifi.WifiManager.

IpAssignment is an Enum in the code below, and it can be STAIC, DHCP, or NONE. And linkProperties is the object that stores information like IP address, gateway, DNS, and so on.

linkAddress is an IP address, and prefixLength is its netmask (how many bit 1 in netmask).

mRoutes is a RouteInf0o ArrayList that can be used to indicate a gateway.

For DNS, mDnses is an ArrayList of InetAddresses.

To begin, use WifiConfiguration SSID to obtain the current settings.00000000000000000000000000000000

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