有没有从Android应用程序中发现完整的USB树的一种方式？目前USB主机 API 只提供所有设备和它们的端点的列表。我需要能够在设备上的USB集线器的特定端口相关联。在Windows中，我可以看到每一个设备是什么端口号。

Is there a way of discovering the full USB tree from within an Android Application? The current USB Host API only provides a list of all the devices and their endpoints. I need to be able to associate the device with a particular port on the USB hub. In Windows I can see what port number each devices is on.

看来，Android操作系统掩盖了枢纽的视图。

It appears that the Android OS masks the hub from view.

我想过尝试通过JNI访问的Linux，但是，应用程序的评论在：  https://github.com/alt236/USB-Device-Info---Android ，表明它不会出现在Linux下做。

I thought about trying to access Linux through JNI, however, the app at the commentary at: https://github.com/alt236/USB-Device-Info---Android, suggests that it doesn't appear in Linux too.

有什么想法？

感谢。

推荐答案

您可以只是走硬件树。举例来说，在我的Nook是/ SYS /设备/平台/ musb_hdrc / USB1。 这里是我的应用程序的屏幕截图。

You can just walk the hardware tree. For instance, on my Nook it's /sys/devices/platform/musb_hdrc/usb1. Here's a screenshot of my app.