Android USB OTG:如何检测大容量存储热插拔事件，然后复制数据？

<uses-permission android:name="android.hardware.usb.host" />

UsbManager usbManager = (UsbManager) getSystemService(Context.USB_SERVICE);

HashMap<String, UsbDevice> deviceList = usbManager.getDeviceList();
for (UsbDevice device : deviceList.values()) {
    if (device.getDeviceClass() == UsbConstants.USB_CLASS_MASS_STORAGE) {
        // 处理大容量存储设备
    }
}

private final BroadcastReceiver usbReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if (UsbManager.ACTION_USB_DEVICE_ATTACHED.equals(action)) {
            // USB设备已连接
        } else if (UsbManager.ACTION_USB_DEVICE_DETACHED.equals(action)) {
            // USB设备已断开连接
        }
    }
};

// 注册广播接收器
IntentFilter filter = new IntentFilter();
filter.addAction(UsbManager.ACTION_USB_DEVICE_ATTACHED);
filter.addAction(UsbManager.ACTION_USB_DEVICE_DETACHED);
registerReceiver(usbReceiver, filter);

// 获取USB设备的读取权限
usbManager.requestPermission(device, PendingIntent.getBroadcast(this, 0, new Intent(ACTION_USB_PERMISSION), 0));

// 打开USB设备连接
UsbDeviceConnection connection = usbManager.openDevice(device);

// 打开USB设备的接口
UsbInterface usbInterface = device.getInterface(0);
UsbEndpoint endpoint = usbInterface.getEndpoint(0);
connection.claimInterface(usbInterface, true);

// 读取数据
byte[] buffer = new byte[1024];
int bytesRead = connection.bulkTransfer(endpoint, buffer, buffer.length, TIMEOUT);

// 写入数据
byte[] data = "Hello, World!".getBytes();
int bytesWritten = connection.bulkTransfer(endpoint, data, data.length, TIMEOUT);

// 关闭连接
connection.releaseInterface(usbInterface);
connection.close();