UUID+裝置號序列號 唯一識別碼（不可變）

private String getMyUUID(){

  final TelephonyManager tm = (TelephonyManager) getBaseContext().getSystemService(Context.TELEPHONY_SERVICE);   

  final String tmDevice, tmSerial, tmPhone, 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 uniqueId = deviceUuid.toString();

  Log.d("debug","uuid="+uniqueId);

  return uniqueId;

 }

java 獲取可變UUID

 private String getMyUUID(){

  UUID uuid = UUID.randomUUID();

     String uniqueId = uuid.toString();

   Log.d("debug","----->UUID"+uuid);

    return uniqueId;

   }

獲得的格式：如下樣子

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