以编程方式在android中启用/禁用数据连接

Question

以编程方式在android中启用/禁用数据连接我想以编程方式启用/禁用数据连接。我使用了以下代码：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();                                     }      }}它在模拟器中没有任何错误，但是，当我尝试在真实设备上运行它时，我得到“InvocationTargetException”。我正在使用API级别8来构建应用程序。

Answer 1

@riHaN JiTHiN您的程序适用于2.3及以上版本，但它需要在'else'语句中进行一些小改动：

else
     {
        try {
            iMthd.invoke(iMgr, true);

'true'应该改为'false'

iMthd.invoke(iMgr, false);