Android获取当前设备有效的IP地址

private InetAddress getActiveAddress() throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {

ConnectivityManager connectivityManager = (ConnectivityManager)getContext().getSystemService(Context.CONNECTIVITY_SERVICE);

Method activeLinkPropertiesMethod = connectivityManager.getClass().getDeclaredMethod("getActiveLinkProperties");
activeLinkPropertiesMethod.setAccessible(true);
Object linkProperties = activeLinkPropertiesMethod.invoke(connectivityManager);

if (linkProperties == null) return null;

Method addressesMethod = linkProperties.getClass().getDeclaredMethod("getAddresses");
Collection<InetAddress> inetAddresses = (Collection<InetAddress>)addressesMethod.invoke(linkProperties);
Iterator<InetAddress> iterator = inetAddresses.iterator();

return iterator.hasNext() ? iterator.next() : null;
}