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Android BMI & Calorie Calculator App

A single-activity Android app in Java that calculates BMI and estimated daily calorie needs from user-entered height, weight, age, and activity level. Learners practice Android layouts, Activity lifecycle, and input handling in native Android with Java.

Estimate
~7h
Steps
5
Completed by
0
Proposed by
codeseed.app

Android SDK · Java · XML layouts

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Project roadmap

  1. 01

    Design the input form

    ~1.5h

    Set up an Android Studio project and design the input form in an XML layout.

  2. 02

    Wire up the Activity

    ~1.5h

    Connect the input fields and calculate button to the Activity's Java code.

  3. 03

    Implement the formulas

    ~1h

    Write the BMI and daily calorie estimation formulas based on the entered values.

  4. 04

    Display the result

    ~1.5h

    Show the calculated results with category labels and simple visual feedback.

  5. 05

    Handle validation and rotation

    ~1.5h

    Validate inputs and preserve entered values across screen rotation.

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~7h · 5 steps

Tech stack

Android SDKJavaXML layouts