Create Config.java on the package source directory which contains:
package com.example.tosmanager;
public class Config {
public static final String SERVER_URL = "http://your.server.com";
}create kakao_app_key.xml on the ../res/values which contains:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="kakao_app_key">your kakao_native_key</string>
</resources>