This class shows an example of how to use AdvertisingIdentifier.java. It is not intended as a full working example.

UseAdvertisingIdentifier.java

public class UseAdvertisingIdentifier {

    public String getBiParams(Activity activity) {
        String mac = getMacAddress();
        String macMd5 = "";
        if (mac.length() > 0) {
            macMd5 = Utility.md5(mac);
        }
        String openUdid = getOpenUdid();
        String udid = getUdid();

        AdvertisingIdentifier adId = AdvertisingIdentifier.getInstance(activity);

        JSONObject jsonObj = new JSONObject();
        try {
            jsonObj.put("open_udid", openUdid);
            jsonObj.put("udid", udid);
            jsonObj.put("mac", mac);
            jsonObj.put("mac_hash", macMd5);
            switch(adId.getType()) {
                case GOOGLEPLAY_ADVERTISING_ID:
                    jsonObj.put("googleplay_advertising_id", adId.getId());
                    break;
                case ANDROID_ID:
                default:
                    jsonObj.put("device_id", adId.getId());
                    break;
            }
            return jsonObj.toString();
        } catch (JSONException ex) {
            // Fail silently and return empty string
        }
        return "";
    }
}

It's important to remember that the advertising id can't be logged or stored in the same place as the MAC address or other device identifiers.