$5\mathrm{.}1$ Create an android app using java that provides feedback based on the below criteria:

You have been tasked with developing an Android app for a fitness tracking service. The app needs to calculate the Body Mass Index $($BMI$)$ of the user based on their height and weight input. The BMI is calculated using the formula:

BMI $=$ weight $($kg$)/($height $($m$)*$ height $($m$)).$

The app should provide a user$-$friendly interface for users to input their height in meters and weight in kilograms, and then display the calculated BMI along with a message indicating the BMI category $($e$.$g$.,$ underweight, normal weight, overweight, etc.$).$

The BMI Category follows the below criteria:

$$ If BMI is less than $18\mathrm{.}5$ then you are considered "Underweight"

$$ If BMI is greater $18\mathrm{.}5$ and less than $25$ you are considered "Normal Weight"

$$ If BMI is greater and equals to $25$ but less than $30$ you are considered "Overweight"

$5\mathrm{.}2$ Design the User Interface using XML layout for the Android app, considering Ul design principles, responsiveness, and customization options available in Android XML$.$