diff --git a/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialProber.java b/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialProber.java index 538ec75..5fa935c 100644 --- a/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialProber.java +++ b/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialProber.java @@ -67,32 +67,47 @@ public class UsbSerialProber { final List result = new ArrayList(); for (final UsbDevice usbDevice : usbManager.getDeviceList().values()) { - final int vendorId = usbDevice.getVendorId(); - final int productId = usbDevice.getProductId(); - - final Class driverClass = - mProbeTable.findDriver(vendorId, productId); - if (driverClass != null) { - final UsbSerialDriver driver; - try { - final Constructor ctor = - driverClass.getConstructor(UsbDevice.class); - driver = ctor.newInstance(usbDevice); - } catch (NoSuchMethodException e) { - throw new RuntimeException(e); - } catch (IllegalArgumentException e) { - throw new RuntimeException(e); - } catch (InstantiationException e) { - throw new RuntimeException(e); - } catch (IllegalAccessException e) { - throw new RuntimeException(e); - } catch (InvocationTargetException e) { - throw new RuntimeException(e); - } + final UsbSerialDriver driver = probeDevice(usbDevice); + if (driver != null) { result.add(driver); } } return result; } + + /** + * 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. + */ + public UsbSerialDriver probeDevice(final UsbDevice usbDevice) { + final int vendorId = usbDevice.getVendorId(); + final int productId = usbDevice.getProductId(); + + final Class driverClass = + mProbeTable.findDriver(vendorId, productId); + if (driverClass != null) { + final UsbSerialDriver driver; + try { + final Constructor ctor = + driverClass.getConstructor(UsbDevice.class); + driver = ctor.newInstance(usbDevice); + } catch (NoSuchMethodException e) { + throw new RuntimeException(e); + } catch (IllegalArgumentException e) { + throw new RuntimeException(e); + } catch (InstantiationException e) { + throw new RuntimeException(e); + } catch (IllegalAccessException e) { + throw new RuntimeException(e); + } catch (InvocationTargetException e) { + throw new RuntimeException(e); + } + return driver; + } + return null; + } }