package com.example.
bodymassindex;
import android.os.Bundle;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;
import android.view.View;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;
public class MainActivity extends AppCompatActivity {
Button button;
EditText weightInput, heightInput;
TextView textResult;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
weightInput = findViewById(R.id.weightInput);
heightInput = findViewById(R.id.heightInput);
button = findViewById(R.id.button);
textResult = findViewById(R.id.textResult);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
calculateBMI();
}
});
}
public void calculateBMI(){
String weightString = weightInput.getText().toString();
String heightString = heightInput.getText().toString();
if(!weightString.isEmpty() && !heightString.isEmpty()) {
double weight = Double.parseDouble(heightString);
double height = Double.parseDouble(weightString);
double BMI = weight / (height * height);
String category = "Nothing Entered";
if (BMI < 15)
category = "underweight";
else if (BMI <= 16)
category = "Severely underweight";
textResult.setText(String.format("BMI:%.2f\nCategory:%s", BMI, category));
}
<EditText
android:id="@+id/heightInput"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="text"
android:text="Name"
tools:layout_editor_absoluteX="185dp"
tools:layout_editor_absoluteY="289dp" />
<TextView
android:id="@+id/textView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
android:text="@string/bodymassindex"
android:textSize="32sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.473"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/textView"
android:layout_width="120dp"
android:layout_height="45dp"
android:layout_marginStart="16dp"
android:gravity="center"
android:text="@string/weight"
android:textSize="20sp"
app:layout_constraintStart_toStartOf="parent"
tools:ignore="MissingConstraints"
tools:layout_editor_absoluteY="114dp" />
<TextView
android:id="@+id/textView2"
android:layout_width="120dp"
android:layout_height="45dp"
android:layout_marginStart="16dp"
android:gravity="center"
android:text="@string/height"
android:textSize="20sp"
app:layout_constraintStart_toStartOf="parent"
tools:layout_editor_absoluteY="289dp" />
<Button
android:id="@+id/button"
android:layout_width="120dp"
android:layout_height="45dp"
android:background="@android:color/holo_blue_light"
android:text="@string/getbmi"
android:textSize="20sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
tools:layout_editor_absoluteY="434dp" />
<TextView
android:id="@+id/textView5"
android:layout_width="120dp"
android:layout_height="45dp"
android:layout_marginStart="16dp"
android:layout_marginTop="100dp"
android:layout_marginEnd="16dp"
android:layout_marginBottom="100dp"
android:gravity="center"
android:text="@string/result"
android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="@+id/textResult"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/button" />
<TextView
android:id="@+id/textResult"
android:layout_width="120dp"
android:layout_height="45dp"
android:layout_marginStart="16dp"
android:layout_marginTop="100dp"
android:layout_marginEnd="16dp"
android:layout_marginBottom="100dp"
android:gravity="center"
android:text="Result"
android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/textView5"
app:layout_constraintTop_toBottomOf="@+id/button" />
<EditText
android:id="@+id/weightInput"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="text"
android:text="Name"
tools:layout_editor_absoluteX="175dp"
tools:layout_editor_absoluteY="111dp" />
}
}
