ChangePhoneNumber.java

package sg.vinova.vss.group5.non.activity;

import sg.vinova.vss.group5.non.R;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class ChangePhoneNumber extends Activity {
	
	@Override
	public void onCreate(Bundle savedInstanceState){
		super.onCreate(savedInstanceState);
		setContentView(R.layout.change_phone_number);
		TelephonyManager telephoneMgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
		final String phoneNumber = telephoneMgr.getLine1Number();
		
		TextView phoneCur;
		phoneCur = (TextView)findViewById(R.id.phone_current);
		phoneCur.setText(phoneNumber);
		
		Button btnChange;
		btnChange = (Button)findViewById(R.id.change_phone_number);
		btnChange.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				AlertDialog dialBox = createDialogBox(phoneNumber);
				dialBox.show();
			}
		});
	}
	
	private AlertDialog createDialogBox(final String phoneNumber){
		AlertDialog myOptionBox
					=new AlertDialog.Builder(this)
        				//.setTitle("Option Box")
        				.setMessage("Your phone number have changed. Would you want to send it to other contacts in your phone?")
        				.setIcon(R.drawable.logo)

        				.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
        					public void onClick(DialogInterface dialog, int which) {
        						announceNewPhone(phoneNumber);
        					}
        					})
        					.setNeutralButton("Cancel", new DialogInterface.OnClickListener() {
        						public void onClick(DialogInterface dialog, int which) {
        						}
        					})
        					.setNegativeButton("No", new DialogInterface.OnClickListener() {
        						public void onClick(DialogInterface dialog, int which) {
        						}	
        					})
        					.create();
		return myOptionBox;
	}
	
	private void announceNewPhone(String phoneNumber){
		Intent intent = new Intent(this, sendNewPhone.class);
		startActivity(intent);
	}
	
}