HCFLCM

package com.droidacid.apticalc.aptitudes;

import com.droidacid.apticalc.R;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

/**
 * Created by ShivamD on 5/18/13.
 */
public class AptiLcmHcf extends Activity implements OnClickListener {

	Button bCalc, bClear;
	EditText etNumber1, etNumber2;
	TextView tvResult;
	int numb1, numb2;

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

	}

	protected void initialize() {

		etNumber1 = (EditText) findViewById(R.id.et_apti_Num1);
		etNumber2 = (EditText) findViewById(R.id.et_apti_Num2);

		tvResult = (TextView) findViewById(R.id.tv_apti_LcmResult);
		bCalc = (Button) findViewById(R.id.b_apti_Lcm);
		bClear = (Button) findViewById(R.id.bClear);
		bCalc.setOnClickListener(this);
		bClear.setOnClickListener(this);

	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.b_apti_Lcm:
			try {
				numb1 = Integer.parseInt(etNumber1.getText().toString());
				numb2 = Integer.parseInt(etNumber2.getText().toString());

				int hcf = 1;
				int p = numb1 * numb2;
				for (int i = 2; i < p; i++) {
					if ((numb1 % i == 0) && (numb2 % i == 0)) {
						hcf = i;
					}
				}
				int lcm = p / hcf;
				String result = "LCM is : " + lcm + " & HCF is : " + hcf;
				tvResult.setText(result);
			} catch (NumberFormatException e) {
				// A Dialog Box here to display to enter an input
				tvResult.setText("");
				AlertDialog.Builder d = new AlertDialog.Builder(this);
				d.setTitle("No value entered");
				d.setMessage("Fields cannot be left blank");
				d.setNegativeButton("Ok",
						new DialogInterface.OnClickListener() {

							@Override
							public void onClick(DialogInterface dialog,
									int which) {
								dialog.cancel();
							}
						});

				d.show();
			}
			break;
		case R.id.bClear:
			etNumber1.setText("");
			etNumber2.setText("");
			tvResult.setText("");
			break;
		}

	}
}