import com.example.radioconvert.R;
import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;

public class MainActivity extends Activity {
	TextView mResult;
	EditText mToConvert;
	RadioGroup mRadioGroup;
	RadioButton mDollar, Meuro;

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

		mResult = (TextView) findViewById(R.id.result);
		mToConvert = (EditText) findViewById(R.id.toConvert);
		mRadioGroup = (RadioGroup) findViewById(R.id.radioG);
		mDollar = (RadioButton) findViewById(R.id.dollar);
		Meuro = (RadioButton) findViewById(R.id.euro);

		mToConvert.addTextChangedListener(new TextWatcher() {

			@Override
			public void onTextChanged(CharSequence arg0, int arg1, int arg2,
					int arg3) {
				// TODO Auto-generated method stub

			}

			@Override
			public void beforeTextChanged(CharSequence arg0, int arg1,
					int arg2, int arg3) {
				// TODO Auto-generated method stub

			}

			@Override
			public void afterTextChanged(Editable arg0) {
				convertCurrentAmount();

			}
		});
		mRadioGroup
				.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {

					@Override
					public void onCheckedChanged(RadioGroup group, int checkedId) {
						convertCurrentAmount();
					}
				});
	}

	public void convertCurrentAmount() {
		double exchangeRate = -1;
		String exchangeSymbol = null;
		switch (mRadioGroup.getCheckedRadioButtonId()) {
		case R.id.dollar:
			mDollar.setChecked(true);
			Meuro.setChecked(false);
			exchangeRate = 3.76;
			exchangeSymbol = "$";


			break;

		case R.id.euro:
			mDollar.setChecked(false);
			Meuro.setChecked(true);
			exchangeRate = 5;
			exchangeSymbol = "€";

			break;
		}
		if (exchangeRate > 0 && exchangeSymbol != null) {

			Double stringtoint = Double
					.valueOf(mToConvert.getText().toString());
			double result = stringtoint * exchangeRate;
			mResult.setText("" + exchangeSymbol + result);

		}
	}

}