Enable/Disable WiFi in Android Programatically

How to Enable/Disable WiFi  Programatically in Android.(Android WiFi API)

In Android using WifiManger Class we can find WiFi state and we can Enable/Disable WiFi.

To Enable WiFi

WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
wifi.setWifiEnabled(true);

To Disable WiFi

WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
wifi.setWifiEnabled(false);

Note: To access with WiFi state, we have to add following permissions inside the AndroidManifest.xml file:

android.permission.ACCESS_WIFI_STATE
android.permission.UPDATE_DEVICE_STATS
android.permission.CHANGE_WIFI_STATE

For More Information about WifiManager Android Developers