如何检查是否移动网络启用/禁用 [英] How to check if mobile network is enabled/disabled

问题描述

我想知道，如果移动网络启用或禁用。

I would like to know if the mobile network is enabled or disabled.

我的应用程序，旨在帮助用户当他接到一个电话，而要做到这一点，我需要上网。因此，我希望用户访问应用程序，第一次如果Wi-Fi具有休眠策略和移动网络被禁用时，显示一个信息框。 （我需要互联网在几毫秒内电话铃声开始后）。

My application is designed to help the user when he receives a phone call, and to do this I need Internet access. Thus, I would like to display an information box when the user access the application for the first time if Wi-Fi has a sleep policy and Mobile network is disabled. (I need Internet within milliseconds after the phone start ringing).

我发现Settings.System.WIFI_SLEEP_POLICY，但我无法找到如何检查的任何信息，如果移动网络被禁止（当Wi-Fi已打开并工作）。

I found Settings.System.WIFI_SLEEP_POLICY, but I can't find any information on how to check if mobile network is disabled (when Wi-Fi is on and working).

任何帮助将是AP preciated！

Any help would be appreciated!

编辑： 问题是，我想知道，如果移动网络用户打开的（而手机可能在当时WiFi接入）。

The problem is that I want to know if mobile network is turned of by the user (while the phone could have WiFi access at the time).

推荐答案

我终于找到了解决办法。显然，并不是所有的手机都有这个选项：

I finally found a solution. Apparently not all phones have this option:

首页>菜单>设置>无线和网络>移动网络（复选框）

Home > Menu > Settings > Wireless & networks > Mobile network (checkbox)

然而，对于那些谁做的，这种方法将工作：

However, for those who do, this method will work:

/**
 * @return null if unconfirmed
 */
public Boolean isMobileDataEnabled(){
    Object connectivityService = getSystemService(CONNECTIVITY_SERVICE); 
    ConnectivityManager cm = (ConnectivityManager) connectivityService;

    try {
        Class<?> c = Class.forName(cm.getClass().getName());
        Method m = c.getDeclaredMethod("getMobileDataEnabled");
        m.setAccessible(true);
        return (Boolean)m.invoke(cm);
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

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