以編程方式在android中啟用/禁用數(shù)據(jù)連接我想以編程方式啟用/禁用數(shù)據(jù)連接。我使用了以下代碼：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();                                     }      }}它在模擬器中沒有任何錯誤，但是，當我嘗試在真實設備上運行它時，我得到“InvocationTargetException”。我正在使用API級別8來構(gòu)建應用程序。