Set Android IP,DNS,GATEWAY setting programmatically

Question

How do I set wifi ip address, dns address, gateway from android java i.e programmatically, I didn't find any method which has the capability to store the values.

Answer 1

You can change system settings programatically.

First you need to request the 'WRITE_SETTINGS' permission in your 'AndroidManifest.xml':

<uses-permission android:name="android.permission.WRITE_SETTINGS"/> 

Then you need to actually change the setting using the following code:

    android.provider.Settings.System.putString(getContentResolver(), android.provider.Settings.System.WIFI_USE_STATIC_IP, "0");     android.provider.Settings.System.putString(getContentResolver(), android.provider.Settings.System.WIFI_STATIC_DNS1, "192.168.0.2");     android.provider.Settings.System.putString(getContentResolver(), android.provider.Settings.System.WIFI_STATIC_DNS2, "192.168.0.3");     android.provider.Settings.System.putString(getContentResolver(), android.provider.Settings.System.WIFI_STATIC_GATEWAY, "192.168.0.1");     android.provider.Settings.System.putString(getContentResolver(), android.provider.Settings.System.WIFI_STATIC_NETMASK, "255.255.255.0");     android.provider.Settings.System.putString(getContentResolver(), android.provider.Settings.System.WIFI_STATIC_IP, "1"); 

The current settings can be accessed via the same method but use 'getString' instead of 'putString'.

For information about the settings option visit the reference here: Settings.System | Android Developers

Answer 2

You can't do this from an application.

Would you like applications on your phone to change phone's settings at will?