Enable/disable data connection in android programmatically

Question

I want to enable/disable the data connection programmatically. I've used the following code:

void enableInternet(boolean yes) {     ConnectivityManager iMgr = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);     Method iMthd = null;     try {         iMthd = ConnectivityManager.class.getDeclaredMethod("setMobileDataEnabled", boolean.class);         } catch (Exception e) {                }      iMthd.setAccessible(false);      if(yes)      {                  try {                     iMthd.invoke(iMgr, true);                     Toast.makeText(getApplicationContext(), "Data connection Enabled", Toast.LENGTH_SHORT).show();                 } catch (IllegalArgumentException e) {                     // TODO Auto-generated catch block                      dataButton.setChecked(false);                      Toast.makeText(getApplicationContext(), "IllegalArgumentException", Toast.LENGTH_SHORT).show();                  } catch (IllegalAccessException e) {                     // TODO Auto-generated catch block                     Toast.makeText(getApplicationContext(), "IllegalAccessException", Toast.LENGTH_SHORT).show();                      e.printStackTrace();                 } catch (InvocationTargetException e) {                     // TODO Auto-generated catch block                      dataButton.setChecked(false);                      Toast.makeText(getApplicationContext(), "InvocationTargetException", Toast.LENGTH_SHORT).show();                  }       }     else      {         try {             iMthd.invoke(iMgr, true);             Toast.makeText(getApplicationContext(), "Data connection Disabled", Toast.LENGTH_SHORT).show();             } catch (Exception e) {                    dataButton.setChecked(true);                 Toast.makeText(getApplicationContext(), "Error Disabling Data connection", Toast.LENGTH_SHORT).show();                                     }      } } 

It's working without any errors in the emulator but, I'm getting "InvocationTargetException" when I try to run it on a real device. I'm using API level 8 to build the application.

Answer 1

This code sample should work for android phones running gingerbread and higher:

private void setMobileDataEnabled(Context context, boolean enabled) throws ClassNotFoundException, NoSuchFieldException, IllegalAccessException, NoSuchMethodException, InvocationTargetException {     final ConnectivityManager conman = (ConnectivityManager)  context.getSystemService(Context.CONNECTIVITY_SERVICE);     final Class conmanClass = Class.forName(conman.getClass().getName());     final Field connectivityManagerField = conmanClass.getDeclaredField("mService");     connectivityManagerField.setAccessible(true);     final Object connectivityManager = connectivityManagerField.get(conman);     final Class connectivityManagerClass =  Class.forName(connectivityManager.getClass().getName());     final Method setMobileDataEnabledMethod = connectivityManagerClass.getDeclaredMethod("setMobileDataEnabled", Boolean.TYPE);     setMobileDataEnabledMethod.setAccessible(true);      setMobileDataEnabledMethod.invoke(connectivityManager, enabled); } 

Dont forget to add this line to your manifest file

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