Build a Simple Calculator App in Android Studio

Learn how to develop a simple calculator app in android studio

Hey there Android enthusiasts, greetings from DataFlair. Today we are going to see and learn to implement an Android Project that is a simple calculator app in android studio. We’ll understand the complete project development in this article.

Do you know when was the first ever mechanical calculator created? The Calculators that we use today were never the same earlier. The first calculator was invented in the year 1642 by Blaise Pascal when he was 19 years old. Okay, now let us begin with our project without any further delay!!

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Build a Simple Calculator App in Android Studio
Fredy  Larson

Fredy Larson

1595059664

How long does it take to develop/build an app?

With more of us using smartphones, the popularity of mobile applications has exploded. In the digital era, the number of people looking for products and services online is growing rapidly. Smartphone owners look for mobile applications that give them quick access to companies’ products and services. As a result, mobile apps provide customers with a lot of benefits in just one device.

Likewise, companies use mobile apps to increase customer loyalty and improve their services. Mobile Developers are in high demand as companies use apps not only to create brand awareness but also to gather information. For that reason, mobile apps are used as tools to collect valuable data from customers to help companies improve their offer.

There are many types of mobile applications, each with its own advantages. For example, native apps perform better, while web apps don’t need to be customized for the platform or operating system (OS). Likewise, hybrid apps provide users with comfortable user experience. However, you may be wondering how long it takes to develop an app.

To give you an idea of how long the app development process takes, here’s a short guide.

App Idea & Research

app-idea-research

_Average time spent: two to five weeks _

This is the initial stage and a crucial step in setting the project in the right direction. In this stage, you brainstorm ideas and select the best one. Apart from that, you’ll need to do some research to see if your idea is viable. Remember that coming up with an idea is easy; the hard part is to make it a reality.

All your ideas may seem viable, but you still have to run some tests to keep it as real as possible. For that reason, when Web Developers are building a web app, they analyze the available ideas to see which one is the best match for the targeted audience.

Targeting the right audience is crucial when you are developing an app. It saves time when shaping the app in the right direction as you have a clear set of objectives. Likewise, analyzing how the app affects the market is essential. During the research process, App Developers must gather information about potential competitors and threats. This helps the app owners develop strategies to tackle difficulties that come up after the launch.

The research process can take several weeks, but it determines how successful your app can be. For that reason, you must take your time to know all the weaknesses and strengths of the competitors, possible app strategies, and targeted audience.

The outcomes of this stage are app prototypes and the minimum feasible product.

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Build a Simple Calculator App in Android Studio

Learn how to develop a simple calculator app in android studio

Hey there Android enthusiasts, greetings from DataFlair. Today we are going to see and learn to implement an Android Project that is a simple calculator app in android studio. We’ll understand the complete project development in this article.

Do you know when was the first ever mechanical calculator created? The Calculators that we use today were never the same earlier. The first calculator was invented in the year 1642 by Blaise Pascal when he was 19 years old. Okay, now let us begin with our project without any further delay!!

#android tutorials #android app development #android calculator project #android project #simple calculator app in android studio

How to Import an Existing Project in Android Studio

In order to start configuring, you need to install the Android studio and the ‘Java SE Development Kit’. First download the android studio from here: Android Studio.

To import the template, simply open Android Studio and import/open the template. Make sure to wait for all the processes (the Gradle Build) to complete before continuing to the next step.

Addition steps

Sometimes, the Gradle Build fails. In some cases, additional components are needed and Android Studio will ask you to do download these additional SDK components. In the ‘messages’ tab, simply follow the instructions provided to install and download the additional components.

Change App Name

Above illustrates how you can change the name of the application.

Change Color Scheme

Above shows how you can change the colors of the application.

You can change your app’s colors to create a custom look. The primary color is the color of the Toolbar, some buttons, and headers. The primary dark color is used for e.g. the status bar. Get more colors from here: material.io

Change Theme of Application

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Tamia  Walter

Tamia Walter

1594987788

How to Build Scientific Calculator App using Android Studio

A Scientific Calculator is useful for situations where we need to calculate some complex things like logs or trigonometry. In such cases, the normal calculator won’t be useful for us. So therefore, we are here to develop a Scientific Calculator.

This calculator will have the following

  1. First, it will have a screen to display the user inputs and by default, it will display a “0”. To make this we will use Text View.
  2. Then there will be another screen that shows the result and the operator. It will be a TextView too.
  3. Then we’ll have the keys, that will have numbers as well as the operators on it. We’ll use Buttons for this.
  4. We’ll use a Linear layout for this so that we can arrange the buttons in the desired manner.

Requirements to develop project

To develop this application there are certain things that you need to know beforehand. So let us see its requirements and the platform that we’ll use for this project. Let us begin with the tool that we’ll use for our Scientific Calculator. The latest Version of Android Studio will be chosen as the Application Development Platform for it. So, you must be fond of Android Studio and have good hands on it.

Android Studio is the best and most appropriate IDE for Android app development today. But, in order to work on Android Studio, there are some concepts that you must be fond of. So, you should have good hands on the following things to work on Android Studio

  1. Object Oriented Programming Concepts
  2. Java Programming
  3. eXtensible Markup Language Basics (XML Basics)
  4. Kotlin (Optional- Either Java or Kotlin will be enough)

Description of the project

This project will have the following files that you can interact with to make the project work

  1. activity_main.xml: This file describes the whole user interface.
  2. MainActivity.java: This file manages the working of this system. Main java file is important as it is the only file that enables the execution of the application.
  3. Resource folder: This folder will have all the resources that are useful for this project. Following are the list of resource files that are used in our project-
  4. Drawable: It has the layout and designing of the application components.
  5. Colors: It has all the colors that are used in the project.
  6. Style: Here the styling of the text or components is done.
  7. String: This file defines all the strings that are necessary for the project.

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Android App Development Company in Egypt

Android App Development Company in Egypt

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