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package com.example.bmicalculator; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.RadioButton; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends Activity { private EditText weightEditText; private EditText heightEditText; private RadioButton maleRadioButton; private RadioButton femaleRadioButton; private Button calculateButton; private TextView resultTextView; private Button resetButton; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // Replace 'main' with your layout file name if different weightEditText = (EditText) findViewById(R.id.weightEditText); heightEditText = (EditText) findViewById(R.id.heightEditText); maleRadioButton = (RadioButton) findViewById(R.id.maleRadioButton); femaleRadioButton = (RadioButton) findViewById(R.id.femaleRadioButton); calculateButton = (Button) findViewById(R.id.calculateButton); resultTextView = (TextView) findViewById(R.id.resultTextView); resetButton = (Button) findViewById(R.id.resetButton); calculateButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { calculateBMI(); } }); resetButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { resetFields(); } }); } private void calculateBMI() { String weightStr = weightEditText.getText().toString(); String heightStr = heightEditText.getText().toString(); if (weightStr.equals("") || heightStr.equals("")) { Toast.makeText(this, "Please enter both weight and height.", Toast.LENGTH_SHORT).show(); return; } float weight = Float.parseFloat(weightStr); float heightCm = Float.parseFloat(heightStr); float heightM = heightCm / 100; // Convert cm to meters if (heightM <= 0) { Toast.makeText(this, "Please enter a valid height.", Toast.LENGTH_SHORT).show(); return; } float bmi = weight / (heightM * heightM); resultTextView.setText(String.format("%.2f", bmi)); } private void resetFields() { weightEditText.setText(""); heightEditText.setText(""); maleRadioButton.setChecked(true); femaleRadioButton.setChecked(false); resultTextView.setText(""); } } } } } } } }) } }) } }
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