[JAVA] [Note] Challenge to develop Android application for business use

Prerequisite information

Greeting

Excuse me for the random writing To challenge the development of Android application for business improvement Willingness to proceed while considering development procedures Please forgive me that the details may be blurred due to circumstances. Contents will be added at any time

Selection process

――Fill out on paper → There are a lot of tasks to input to PC There is a lot of information that has not been converted into data ――The number of PCs is small and there is no research --Can be used offline due to weak network environment ___ → Optimal application development on Android ___

Posted by specs

--Third year system administrator (as of October 2020) --No Android experience --No Java experience

Environmental check

• Windows10 Pro + Java7
• Android Studio 4.0 --Server + SQL Server + Tomcat7 --Android tablet (Android 9 Pie)

Development procedure

Requirement definition

--Target supplement --Construction of ideal form --Check the current situation ――Matching

Android app

-Create Project (Android Studio) --Basic information settings (gradle, manifests) --GUI creation (activity_.xml) --SQLite related --http communication related (okhttp3)

WebAPI --Tomtom 7 related --http communication related --Form printing