UsbSerialProber.java 文件源码

/**
 * Probes a single device for a compatible driver.
 *
 * @param usbDevice the usb device to probe
 *
 * @return a new {@link UsbSerialDriver} compatible with this device, or
 * {@code null} if none available.
 */
@Keep
public UsbSerialDriver probeDevice(final UsbDevice usbDevice) {
    final int vendorId = usbDevice.getVendorId();
    final int productId = usbDevice.getProductId();
    final Class<? extends UsbSerialDriver> driverClass = mProbeTable.findDriver(vendorId, productId);
    if (driverClass != null) {
        final UsbSerialDriver driver;
        try {
            final Constructor<? extends UsbSerialDriver> constructor = driverClass.getConstructor(UsbDevice.class);
            driver = constructor.newInstance(usbDevice);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        return driver;
    }
    return null;
}