LABADV 1 : Main: swapUSDTHB

//Android Studio
package com.example.coc.myapplication;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import android.widget.Button;
import android.widget.EditText;

import javax.xml.transform.Result;


public class MainActivity extends AppCompatActivity {

    double res,ress;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button submit = (Button) findViewById(R.id.submit);
        Button clear = (Button) findViewById(R.id.clear);
        final EditText USD = (EditText) findViewById(R.id.USD);
        final EditText result = (EditText) findViewById(R.id.result);
        final EditText THB = (EditText) findViewById(R.id.THB);
        //final EditText resu=(EditText) findViewById(R.id.editText);
        USD.setText(null);
        THB.setText(null);


        submit.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                String mynum1 = USD.getText().toString();
                String mynum2 = THB.getText().toString();

                try{
                    if(!USD.getText().equals("")){
                        res = Double.parseDouble(mynum1) * 32.78; //0.0304755
                        result.setText(Double.toString(res));
                    }
                }catch (Exception e){
                    res = Double.parseDouble(mynum2) * 0.0304755; //0.0304755
                    result.setText(Double.toString(res));
                }

                //res=Integer.parseInt(mynum1)+Integer.parseInt(mynum2);


            }
        });
        clear.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                USD.setText(null);
                THB.setText(null);
                result.setText(null);


            }
        });

    }
}