sample flutter api manager

api_service.dart

/**
 * author: bunrin
 * ....
 * ......
 */ 

enum STATUS_CODE {
   
};

class ApiManager {

  ApiManager._privateConstructor();

  static final ApiManager instance = ApiManager._privateConstructor();
  
  /**
   * 
   * - phone: 
   * - password: 
   */
  STATUS_CODE signup(String phone, String password) {
      
      // validate phone against null and empty
      // validate password against null and empty
      // if phone is invalid, return -1
    
      writeLog("phone = phone, password = password");
    
      void status = NetworkManager.send(phone, password);
    
   
      return status;
  }
  
}