Activity01.java

package com.yarin.android.Examples_04_13;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;

public class Activity01 extends Activity {
	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
	}

	/* ����menu */
	public boolean onCreateOptionsMenu(Menu menu) {
		MenuInflater inflater = getMenuInflater();
		// ����menu����Ϊres/menu/menu.xml
		inflater.inflate(R.menu.menu, menu);
		return true;
	}

	/* ����˵��¼� */
	public boolean onOptionsItemSelected(MenuItem item) {
		// �õ���ǰѡ�е�MenuItem��ID,
		int item_id = item.getItemId();

		switch (item_id) {
		case R.id.about:
			/* �½�һ��Intent���� */
			Intent intent = new Intent();
			/* ָ��intentҪ�������� */
			intent.setClass(Activity01.this, Activity02.class);
			/* ����һ���µ�Activity */
			startActivity(intent);
			/* �رյ�ǰ��Activity */
			Activity01.this.finish();
			break;
		case R.id.exit:
			Activity01.this.finish();
			break;
		}
		return true;
	}
}