Application of Building Workers Services in Facing Industrial Revolution 4.0

The services of skilled construction workers are only known around them in the sense that they are not yet widespread in the community, therefore an application is needed that can help construction workers services and can make it easier for the wider community to find construction workers services. The purpose of this research is to build applications as building laborer services based on android and to make construction workers able to compete in this era of industrial revolution 4.0. The method used in this research is the waterfall methodology, where in this methodology each stage of the research is carried out sequentially, starting from the stages of analysis, design, writing program code, testing, and maintenance. This application uses Adobe Illustrator, AirDroid, Android Studio and Sublime Text, but the problem in this research is that it is very difficult to find experienced and professional construction workers and most of these construction workers do not understand the digital world so it is difficult to develop this research in old school community (do not understand the world of technology today).


Introduction
The rapid advancement of technology and information has had a considerable impact on lift [1] The growth of existing technological advances is so easily felt in everyday life. This world has many skilled and professional builders [2]. But not many people are aware that the wealth of human resources is actually around the community. Wealth is a builder. Builders may often be underestimated. This assumption is certainly not true because a craftsman has many benefits, one of which is as an aesthetic element or beauty in the construction or renovation of a house. Besides having an aesthetic element, a professional craftsman also has a high selling value because not everyone can do it. For this reason, various kinds of experts and their expertise need to be introduced to the public. Various themes and platforms of service applications have been created. Many business institutions and developers have created applications with related themes [3].
The application product is still limited to providing information / services in ordering building design services and online transportation and has not touched the services of a builder [4]. In terms of development, Indonesia is a country that has experienced quite rapid

Application of Building Workers Service…
■ 33 development. The problem that is still often encountered is the difficulty of finding experienced and trusted builders. The things that are considered by the community in choosing a handyman are how many hours they fly and the quality of their work. Therefore it is necessary to provide a mobile application that is able to connect builders and the public through a smartphone device [5] [6]. This study aims to build an application of building services to the community. This android-based application that is able to provide services includes data collection of artisans along with their portfolio information, and handyman service booking transactions [7] [8].

Research Method
E In making coolie service applications, the research method used is the waterfall method including analysis, design, writing program code, testing and maintenance [9]. In this section, it will be discussed more clearly about the general description of the system, system design, interface design, scenario design and testing [10] [11]. The following is an explanation of the stages in the image above : Requirements analysis is a constraint, and the objectives are explained in detail in order to have a function as the content of the quality system [12]. System and software design is the system software and hardware requirements in shaping the design that will be made. Implementation and unit testing is a program design that will test the results to meet the desired requirements.
Integration and system testing is a test that functions to adjust the system that has been created. Operation and maintenance is a stage that involves the whole thing that has happened or will occur, usually a long time in terms of reducing errors in the system and improving the program, as well as being an excess in solving problems [13].

Figure 2. Research Flowchart
The flowchart above is the flow that will be carried out in this study.

Literature Review
The author conducts library research to obtain theoretical aspects in collecting data and information through reference books, scientific journals and other material related to the issues reviewed in the preparation of this research [14] [15].
System Overview FastKul application as a builder service provider application is built using the Java programming language in the Android platform [16]. An overview of the Fastkul system is shown in Figure 3 [17]. There are two users of the system, namely the community (customer) and the handyman as a service provider. All transactions are processed in the Fastkul application using the internet and Android smartphones [18] [19].
System Design System design is a stage to identify all system requirements. In system design, use case diagrams are used to provide a functional description of the system. The use case diagram is shown in Figure 3 below [20]. Interface Design Interface design is a stage to provide an overview of the appearance of applications that will be used by users [21] [22]. The number of interfaces for users is the start page, the login page, the user register page, the main menu page, the handyman message page [23]. The admin page interface includes the admin login and the admin main page. The interface for a handyman includes the builder's page, the builder's register page, and the master's main menu page [24].

Application of Building Workers Service…
Start Page Design The Start Page Design is shown in Figure 2. This page can be used for all users including the general public, admin, and handyman. The buttons provided are login, register, handyman register, and exit [25]. Designing a User Login Page. The design of the User Login Page is shown in Figure 3. On the User Login Page two buttons will appear namely login and exit, the login button functions to enter the next page, and the exit button functions to exit the application [28].
Designing the User Register. The design of the User Register Page is shown in Figure 4. On the User Register Page, it can be seen that there is a username text field, a password text field, an email text field, an age text field and an OK button that must be filled if you want to log in and enter the Main Menu.

Findings
Context Diagram is a general description of the system, by making a context diagram makes it easy for a programmer to make an application, so that the program is made as expected by an analyst [29].

Problem
In this section, before entering the Research implementation section, you can write down the problems that you find during conducting research. and how you can solve the problem [30]. Regarding the problem in this research, namely the difficulty of finding customers and construction workers for the first time, because there are still not many people who know it widely and require a large amount of money to realize this research. The solution to this problem will be solved to find the best way by making proposals to other companies to invest and many things by explaining that if this research can be implemented, it will have a very good impact for the wider community, if this method is successful, it is not difficult to introduce the results of this research by means of social media, and advertised in various media [31].

Application of Building Workers Service…
■ 37 The following are the database tables in this study:

Table 1. Worker Service Database
The Tb_Worker Services database contains 4 data, the first is No_Transaction which functions to verify / or store a transaction data that has been carried out, the second date, this date is to provide a date for each transaction and every thing that is done by the admin / service. The third Id_User is a primary key that connects the 4 data in the table. And finally the 4th status is data that provides a description of every incident carried out by the worker / admin service.

Table 2. Client Database
In the Tb_Client database contains 6 data, first code_user is client data in the form of an account that has registered in the construction labor service application which connects all data contained in the tb_client data table. The second name is the data that contains the name of the client. The three types of workers are data to choose what types of workers are in the construction labor service application. Fourth No_telpon is a data that contains the telephone number of the client. The fifth password is data that contains a password from the client. And finally the 6 Type_account, is data that contains the type of account that has been filled in by the client.

Table 1. Worker Database
Name_worker, is data that contains the name of the construction laborer service. Third, Address, is a data that contains an address of the construction laborer service. Fourth No_telephone is data containing the telephone number of the construction worker service. The fifth password is data containing a password from construction workers' services.
In this system, the required tables are 3 types of table_work services, table_user, and table_work. The appearance of the application can be seen in the picture, where we have to log in first, if the login is not owned, you must register first.

Figure. 8 Menu Dashboard
The following are the results of the initial appearance of the workers services application site.

Conclusion
In the research, the application of building labor services based on Android will more or less be made like this, with the application of the android-based construction laborer service application will help construction workers services and can make it easier for the wider community to find construction workers services and make construction workers able to compete in era of this 4.0 industrial revolution [32] [33].
The problem faced in this research is the amount of costs in realizing this research, so it requires various investors in realizing this research [34].
By implementing this research throughout the wider community will have a positive impact on manual workers and service users of construction workers.