android 简单代码

package com.myA.codefans;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity {    private Button myButton = null;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        myButton = (Button) findViewById(R.id.myBotton);                myButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {                Intent intent = new Intent(MainActivity.this, SecondActivity.class);                MainActivity.this.startActivity(intent);}});    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.activity_main, menu);        return true;    }    }