package com.example.lab1;

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    TextView result;
    EditText editText1;
    EditText editText2;
    Button button;

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

        result = (TextView) findViewById(R.id.wynik);

        editText1 = (EditText) findViewById(R.id.editLiczba1);
        editText2 = (EditText) findViewById(R.id.editLiczba2);
        button = (Button) findViewById(R.id.dodaj);

        int liczba1 = 0;
        int liczba2 = 0;

        try {
            liczba1 = Integer.parseInt(editText1.getText().toString());
            liczba2 = Integer.parseInt(editText2.getText().toString());
        } catch(NumberFormatException e) {
            System.out.println("Nieprawidłowa liczba");
            liczba1=0;
            liczba2=0;
        }
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                double number1 = Double.parseDouble(editText1.getText().toString());
                double number2 = Double.parseDouble(editText2.getText().toString());
                double suma = number1 + number2;
                result.setText(Double.toString(suma));
            }
        }
    }
}