/**
 * Return pseudo unique ID
 * @return ID
 */public static String getUniquePsuedoID() {// If all else fails, if the user does have lower than API 9 (lower// than Gingerbread), has reset their device or 'Secure.ANDROID_ID'// returns 'null', then simply the ID returned will be solely based// off their Android device information. This is where the collisions// can happen.// Thanks http://www.pocketmagic.net/?p=1662!// Try not to use DISPLAY, HOST or ID - these items could change.// If there are collisions, there will be overlapping dataString m_szDevIDShort = "35" + (Build.BOARD.length() % 10) + (Build.BRAND.length() % 10) + (Build.CPU_ABI.length() % 10) + (Build.DEVICE.length() % 10) + (Build.MANUFACTURER.length() % 10) + (Build.MODEL.length() % 10) + (Build.PRODUCT.length() % 10);// Thanks to @Roman SL!// http://stackoverflow.com/a/4789483/950427// Only devices with API >= 9 have android.os.Build.SERIAL// http://developer.android.com/reference/android/os/Build.html#SERIAL// If a user upgrades software or roots their device, there will be a duplicate entryString serial = null;try {serial = android.os.Build.class.getField("SERIAL").get(null).toString();// Go ahead and return the serial for api => 9return new UUID(m_szDevIDShort.hashCode(), serial.hashCode()).toString();} catch (Exception exception) {// String needs to be initializedserial = "serial"; // some value}// Thanks @Joe!// http://stackoverflow.com/a/2853253/950427// Finally, combine the values we have found by using the UUID class to create a unique identifierreturn new UUID(m_szDevIDShort.hashCode(), serial.hashCode()).toString();}

private static String uniqueID = null;
private static final String PREF_UNIQUE_ID = "PREF_UNIQUE_ID";public synchronized static String id(Context context) {if (uniqueID == null) {SharedPreferences sharedPrefs = context.getSharedPreferences(PREF_UNIQUE_ID, Context.MODE_PRIVATE);uniqueID = sharedPrefs.getString(PREF_UNIQUE_ID, null);if (uniqueID == null) {uniqueID = UUID.randomUUID().toString();Editor editor = sharedPrefs.edit();editor.putString(PREF_UNIQUE_ID, uniqueID);editor.commit();}}return uniqueID;
}

    final TelephonyManager tm = (TelephonyManager) getBaseContext().getSystemService(Context.TELEPHONY_SERVICE);final String tmDevice, tmSerial, androidId;tmDevice = "" + tm.getDeviceId();tmSerial = "" + tm.getSimSerialNumber();androidId = "" + android.provider.Settings.Secure.getString(getContentResolver(), android.provider.Settings.Secure.ANDROID_ID);UUID deviceUuid = new UUID(androidId.hashCode(), ((long)tmDevice.hashCode() << 32) | tmSerial.hashCode());String deviceId = deviceUuid.toString();