AndroidHow To

Learn how to Develop Basic Rectangular App for Android

Hello all,

Today, I introduce one more Android tip, a basic simple Android Application, basic rectangular. I will develop a simple application to calculate the parimeter and the area of a rectangular.

Purpose of this application:

  • Be familiar with Android environment development.
  • Be familiar with an Android project organization.
  • Create an Android project, basic layout.
  • Know about basic java.
  • Know about three basic widgets: TextView, EditText and Button.
  • Know about Click event for Button.

Let’s do it

I. IN ACTIVITY_MAIN.XML

  • Create 2 Edit Text for 2 values: Length and Width

 

 

  • Create a Button to calculate the perimeter and the area

 

  • Create a Text View to show the result.

 

II. IN MAINACTIVITY.JAVA

  • Create Text View, Edit Text and Button.

 

  • In btn_result, add setOnClickListener event for the button.

 

  • In onClick class, I create length and width variables, get the values from Edit Text and add to length and width variables.

 

  • Create perimeter and area variables.

 

  • Final, I add the result to the Text View.

sdsd

About author

Articles

Morris is a Technology enthusiast and a writer by night. He has been a part of TheTechly for quite some time and he contributes knowledgeable news articles from the Technology niche.
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