Start / stop built-in Wi-Fi / USB tethering from code?

Question

How can I start or stop the built-in tethering in Android 2.2 from my application?

Answer 1

I used the code from Android How to turn on hotspot in Android Programmatically! and I enable the portable hotspot for android 4.2. Here's the code.

WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
// TODO Auto-generated method stub
WifiConfiguration wifi_configuration = null;
wifiManager.setWifiEnabled(false);

try 
{
  //USE REFLECTION TO GET METHOD "SetWifiAPEnabled"
Method method=wifiManager.getClass().getMethod("setWifiApEnabled", WifiConfiguration.class, boolean.class);
method.invoke(wifiManager, wifi_configuration, true);
} 
catch (NoSuchMethodException e){
// TODO Auto-generated catch block
  e.printStackTrace();
}catch (IllegalArgumentException e) {
    // TODO Auto-generated catch block
e.printStackTrace();
}catch (IllegalAccessException e) {
    // TODO Auto-generated catch block
 e.printStackTrace();
}catch (InvocationTargetException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
}