Bluetooth on Android - how to connect to the CORRECT bluetooth device?

I'm writing a program that speaks with an external accessory over rfcomm. My problem is that I don't know what the correct way of identifying my device is. the way I do it now is like this:

Set<BluetoothDevice> pairedDevices = mBluetoothAdapter
                .getBondedDevices();
        for (BluetoothDevice device : pairedDevices) {
            if (device.getName().equals(MY_DEVICE_NAME)) {
                this.myDevice = d开发者_Go百科evice;
                break;
            }
        }

This method however relies on the name of the device which to me seems dirty and bad :) is there a better way to do this? I tried looking at all the methods of BluetoothDevice but none seemed to help - is the name really the best way to do it? I saw that in some places people say that I should use UUIDs but that is used to open the socket to the device once I have it:

            _socket = myDevice.createRfcommSocketToServiceRecord(MY_UUID);

is there a better way to do it?

Devices of the same kind/functionality and/or brand will usually have a similar name. For example, all RN-41 devices from Roving Networks have the following name:

FireFly-XXXX

where XXXX is the last 4 digits of the device's address. That means you can use the following to connect to any of them:

        if (device.getName().startsWith("FireFly-")) {
            this.myDevice = device;
            break;
        }

This is exactly what I do in my app and haven't found any more reliable/consistent way to do it. As a generalization, you should be able to use a regular pattern if the name in the devices you are interested in is any more complex than the example above.

You can use myDevice.getAddress() to get the bluetooth device address and compare, it will always be unique (unlike name)

You can also use BluetoothDevice.getBluetoothClass() for at narrowing down which devices might be relevant.

BluetoothClass.getMajorDeviceClass() will tell you roughly what kind of device it is - a phone, a computer, an audio or video device, or whatever. BluetoothClass.hasService() further specifies some capabilities of the device.

Within each of the major classes, some minor classes are defined - what kind of computer / audio-video device / phone / health equipment etc. it is.

Also, on recent versions of the Android platform (API level 15+), you can query for the service records of a device, without having to connect to it. See BluetoothDevice.fetchUuidsWithSdp() and BluetoothDevice.getUuids().