BMI-Calculator | BMI Calculator HTML / CSS / JS | Animation library
kandi X-RAY | BMI-Calculator Summary
kandi X-RAY | BMI-Calculator Summary
BMI Calculator HTML / CSS / JS
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BMI-Calculator Key Features
BMI-Calculator Examples and Code Snippets
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Trending Discussions on BMI-Calculator
QUESTION
import 'dart:math';
class CalcuatorBrain {
CalcuatorBrain({this.height, this.weight});
final int? height;
final int? weight;
final double _bmi = 0;
String calculateBMI() {
double _bmi = weight! / pow(height! / 100, 2);
//double _bmi = weight! / (height! * height! ) / 100;
return _bmi.toStringAsFixed(1);
}
String getResult() {
if (_bmi >= 25) {
return 'Overweight';
} else if (_bmi < 18.5) {
return 'Normal';
} else {
return 'Underweight';
}
}
String getInterpretation() {
if (_bmi >= 25) {
return 'Try to exercise more.';
} else if (_bmi >= 18.5) {
return 'Good job,';
} else {
return 'You can eat a bit more.';
}
}
}
...ANSWER
Answered 2021-Sep-19 at 18:39There is a typo in code. In getResult
,
} else if (_bmi < 18.5) {
needs to be
} else if (_bmi >= 18.5) {
.
Also prefer non nullable types. I looked the original code, height and weight has default values. So we can make them non-nullable.
_bmi
should be computed in constructor. Because if getResult
called before calculateBMI
, it will return Underweight
as _bmi
is 0
. If it is computed in constructor, we can call any method in any order.
QUESTION
I'm having difficulty generating the content I want to display on my card widget in Flutter. I've commented out the code with the styling I'm trying to achieve. However, even when I try just adding a Text('Test Text')
widget to my ReusableCard class, it doesn't emulate. I don't see any errors, and I don't understand why nothing is popping up. I tried using a Stack widget with no luck.
This is a companion project for the Flutter App Development Bootcamp. I'll share my GitHub repo link here: GitHub Repo
Any help or guidance would be greatly appreciated.
...ANSWER
Answered 2021-Jul-18 at 14:57Hey i saw your code you must return the widget int reuseale class
Your code
QUESTION
Guys, I am trying to create a BMI calculator app. everything is working fine but I am getting an error which is shown below while passing data in the condition statement. so can anyone please help me solve this issue it will help me a lot thank you :)
...ANSWER
Answered 2021-Mar-13 at 19:41You are calling getResult() before calculateBMI(), where your _bmi is null hence giving the exception.
You can solve it by either initialising the value but it wont fix the value in the result page.
You might want to calculate the Bmi first and save it and then pass it. like this.
QUESTION
When I run the code, only white screen is shown, the problem I encounter is Thread 1: "[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key calculateButtonLabel." inside the AppDelegate.swift file.
The starting project is here: https://github.com/appbrewery/BMI-Calculator-iOS13
My code for the CalculateViewController(which is the first one):
...ANSWER
Answered 2021-Feb-27 at 09:36Somewhere in your codebase, potentially a xib file or a storyboard, you have a reference to calculateButtonLabel
that isn't linked to anything. My best guess is that you used to have an IBOutlet linked to it that no longer exist.
The GitHub repo you linked doesn't contain a reference to calculateButtonLabel
and it builds & runs fine in the simulator (Xcode 12.1).
QUESTION
I was just doing a BMI Calculator with Flutter but end up having this error but when I look at all my codes I could not find the error.
Here is my calculator_brain.dart
file where reside all my conditions:
ANSWER
Answered 2020-Feb-28 at 18:23From the code, I see where are you passing your data to be calculated. I mean from where you are passing the height and weight, it cannot calculate because it is not getting the values. An when you press the bottom button it is not getting anything so null cannot be / so it's giving the error.
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