package com.example.no1;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity { private Button loginbutton;?? ? @Override? ? protected void onCreate(Bundle savedInstanceState) {? ? ? ? super.onCreate(savedInstanceState);? ? ? ? setContentView(R.layout.activity_main);? ? ? ? loginbutton=(Button)findViewById(R.id.button1);? ? ? ? loginbutton.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub System.out.println("hello"); } });? }? ? @Override? ? public boolean onCreateOptionsMenu(Menu menu) {? ? ? ? // Inflate the menu; this adds items to the action bar if it is present.? ? ? ? getMenuInflater().inflate(R.menu.main, menu);? ? ? ? return true;? ? }? ??}