Create a BMI calculator app (using Android Studio) that allows users to enter their weight and height and whether they are entering these values in English or Metric units, then calculates and displays the user's body mass index. The app shoiuld also display the following information from the Department of Health and Human Services/National Institute of Health so the user can evaluate his/her BMI:

BMI values:

Underweight : less than 18.5
Normal: between 18.5 and 24.9
Overweight: between 25 and 29.9
Obese: 30 or greater
BMI = weightInPounds x 703
heightInInches x heightInInches
or
BMI = weightInKilograms
heightInMeters x heightInMeters

Using the class Toast display the BMI value and the category (if is Underweight, Normal, Overwieight or Obese). The Toast message must be display at the center of the activity.