INTENT:
显示intent: Intent intent=new Intent(this,Activity01.class);
隐式intent:在intent-filter注册
intent的作用:
*启动Activity startActivity(intent),StartActivityForResult(intent,requestCode);
*启动Service startService(intent) ,bindService(intent)
*发送广播 sendBroadcast(intent);
原文:http://www.cnblogs.com/gentspy/p/5229387.html