package com.example.apka;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class fliniowa extends Activity {
    EditText paramA;
    EditText paramB;
    EditText resultText;
    Button button1;
    float result = (float) 0;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.fliniowa);

        Button button = (Button) findViewById(R.id.button1);
        button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
try{
                resultText = (EditText)findViewById(R.id.editText3);
                paramA = (EditText)findViewById(R.id.editText1);
                paramB = (EditText)findViewById(R.id.editText2);
                Float a = Float.parseFloat(paramA.getText().toString());
                Float b = Float.parseFloat(paramB.getText().toString());

                if (a != null && b != null){
                    result = (float) -a / b;
                    String finalResult=String.format("%.2f", result);
                    resultText.setText(finalResult);
                    if (resultText != null){

                    }
                }


}

catch(Exception ex){
Toast.makeText(fliniowa.this, "Podałeś błędne dane",
   Toast.LENGTH_LONG).show();
}
            }
        });
    }
}