Aemir-MainActivity

package com.example.testexample;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;

import javax.xml.transform.Result;


public class MainActivity extends AppCompatActivity {
    public static final String EXTRA_HINPUT = "com.example.application.example.EXTRA_HINPUT";
    public static final String EXTRA_WINPUT = "com.example.application.example.EXTRA_WINPUT";
    public static final String IS_MALE = "is_male";
    public static final String EXTRA_FEMALE = "com.example.application.example.EXTRA_FEMALE";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button calcbtn = (Button) findViewById(R.id.calculatebtn);
        calcbtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                openResultActivity();
            }
        });
    }

    public void openResultActivity(){
        EditText Hinput = (EditText) findViewById(R.id.heightinput);
        double heightinput = Double.parseDouble(Hinput.getText().toString());

        EditText Winput = (EditText) findViewById(R.id.weightinput);
        double weightinput = Double.parseDouble(Winput.getText().toString());

        RadioButton malebtn = (RadioButton)findViewById(R.id.malebtn);

        Intent intent = new Intent(this, ResultActivity.class);
        intent.putExtra(EXTRA_HINPUT, heightinput);
        intent.putExtra(EXTRA_WINPUT, weightinput);
        intent.putExtra(IS_MALE, malebtn.isChecked())
        startActivity(intent);
    }
}