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package com.skpack.Dollars_Euros;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.RadioButton;import android.widget.TextView;public class Dollars_EurosActivity extends Activity implements OnClickListener {	/** Called when the activity is first created. */	TextView dollars;	TextView euros;	RadioButton dtoe;	RadioButton etod;	Button convert;	@Override	public void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.main);		dollars = (TextView) this.findViewById(R.id.dollars);		euros = (TextView) this.findViewById(R.id.euros);		dtoe = (RadioButton) this.findViewById(R.id.dtoe);		dtoe.setChecked(true);		etod = (RadioButton) this.findViewById(R.id.etod);		convert = (Button) this.findViewById(R.id.convert);		convert.setOnClickListener(this);	}		@Override    public void onClick(View v) {        if (dtoe.isChecked()) {            convertDollarsToEuros();        }        if (etod.isChecked()) {            convertEurosToDollars();        }    }       protected void convertDollarsToEuros() {        double val = Double.parseDouble(dollars.getText().toString());        // in a real app, we'd get this off the 'net        euros.setText(Double.toString(val*0.67));    }       protected void convertEurosToDollars() {        double val = Double.parseDouble(euros.getText().toString());        // in a real app, we'd get this off the 'net        dollars.setText(Double.toString(val/0.67));    } 	}

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