如何关闭3G数据连接编程方式在android的？ [英] How to turn off 3G data connection programmatically in android?

问题描述

欲启用/禁用3G等数据连接separately.Is能够分别访问3G？这意味着如果用户选择的选项3G，然后启用only.And如果用户选择选项/禁用3G数据连接数据服务，启用/禁用数据连接，除了3G.Is这可能吗？  我尝试以下方法        

enableDataConnectivity（）;         
和
disableDataConnectivity（）;
的的
TelephonyManager

I want to Enable/Disable 3G and other Data connections separately.Is it possible to access 3G individually?That means if the user selects the option 3G, then Enable/Disable 3G data connection only.And if the user selects the option Data Services, enable/disable data connections except 3G.Is it possible? I tried the following methods

enableDataConnectivity();
and
disableDataConnectivity();
of
TelephonyManager

但我认为这些方法whole.I关闭/开启所有的数据业务要分别接入3G。

But i think these methods turn off/on all data services in whole.I want to access 3G separately.

如何做到这一点？

推荐答案

这code样品应适用于Android手机上运行姜饼和更高的：

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

private void setMobileDataEnabled(Context context, boolean enabled) 
{
   final ConnectivityManager conman = (ConnectivityManager)    
   final ConnectivityManager conman = (ConnectivityManager)
   context.getSystemService(Context.CONNECTIVITY_SERVICE);
   final Class conmanClass = Class.forName(conman.getClass().getName());
   final Field iConnectivityManagerField = conmanClass.getDeclaredField("mService");
   iConnectivityManagerField.setAccessible(true);
   final Object iConnectivityManager = iConnectivityManagerField.get(conman);
   final Class iConnectivityManagerClass =     Class.forName(iConnectivityManager.getClass().getName());
   final Method setMobileDataEnabledMethod = iConnectivityManagerClass.getDeclaredMethod("setMobileDataEnabled", Boolean.TYPE);
   setMobileDataEnabledMethod.setAccessible(true);
   setMobileDataEnabledMethod.invoke(iConnectivityManager, enabled);
}

这还需要以下权限。

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

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