以下code会告诉你，如果移动数据已启用与否，不管是否有一个移动数据连接活跃在那一刻，或无论是否wifi的启用/激活。这code只能在Android 2.3（姜饼），后来。 其实这code也适用于早期版本的Andr​​oid，以及; - ）

The following code will tell you if "mobile data" is enabled or not, regardless of whether or not there is a mobile data connection active at the moment or whether or not wifi is enabled/active or not. This code only works on Android 2.3 (Gingerbread) and later. Actually this code also works on earlier versions of Android as well ;-)

    boolean mobileDataEnabled = false; // Assume disabled
    ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    try {
        Class cmClass = Class.forName(cm.getClass().getName());
        Method method = cmClass.getDeclaredMethod("getMobileDataEnabled");
        method.setAccessible(true); // Make the method callable
        // get the setting for "mobile data"
        mobileDataEnabled = (Boolean)method.invoke(cm);
    } catch (Exception e) {
        // Some problem accessible private API
        // TODO do whatever error handling you want here
    }

请注意：您需要有权限 android.permission.ACCESS_NETWORK_STATE 才能够使用这个code

Note: you will need to have permission android.permission.ACCESS_NETWORK_STATE to be able to use this code.