1. 添加USB设备权限到AndroidManifest.xml文件中。

2. 使用UsbManager获取USB设备信息。

UsbManager usbManager = (UsbManager) getSystemService(Context.USB_SERVICE);
HashMap deviceList = usbManager.getDeviceList();

3. 使用UsbDeviceConnection打开对应的USB设备。

UsbDevice usbDevice = deviceList.get(deviceName);
UsbDeviceConnection connection = usbManager.openDevice(usbDevice);

4. 获取USB设备中的文件列表。

File root = new File("/mnt/usb_storage/USB_DISK0/");
File[] fileList = root.listFiles();

5. 使用RecyclerView或ListView显示USB设备中的文件列表。

完整代码如下：

private void showUsbDeviceContents() { UsbManager usbManager = (UsbManager) getSystemService(Context.USB_SERVICE); HashMap deviceList = usbManager.getDeviceList(); String deviceName = getIntent().getStringExtra("deviceName"); if (deviceName == null) { return; } UsbDevice usbDevice = deviceList.get(deviceName); if (usbDevice == null) { return; } UsbDeviceConnection connection = usbManager.openDevice(usbDevice); if (connection == null) { return; } connection.claimInterface(usbInterface, true); File root = new File("/mnt/usb_storage/USB_DISK0/"); File[] fileList = root.listFiles(); RecyclerView recyclerView = findViewById(R.id.recyclerView); recyclerView.setLayoutManager(new LinearLayoutManager(this)); recyclerView.setAdapter(new FileAdapter(fileList)); }