Android基础PPT.ppt

Notification Manager How background app interact with users Consistent notification presentation Views Views Location Manager ECS 152B Yichuan Wang yicwang@ Possible project: p2p+android+voip+soft handoff Java Basic Java programming Exceptions Inner Class, Interface Advanced topics we will touch: Java IO Java Thread Java Socket /~hasti/cs368/JavaTutorial/ Android Basics Credit goes to Google and UMBC Agenda Mobile Application Development (MAD) Intro to Android platform Platform architecture Application building blocks Development tools Hello Android Few reasons to go MAD… Smart Phones Internet access anywhere Social networking Millions of mobile users Open standards Introduction to Android Open software platform for mobile development A complete stack – OS, Middleware, Applications An Open Handset Alliance (OHA) project Powered by Linux operating system Fast application development in Java Open source under the Apache 2 license Linux Kernel Works as a HAL Device drivers Memory management Process management Networking Libraries C/C++ libraries Interface through Java Surface manager – Handling UI Windows 2D and 3D graphics Media codecs, SQLite, Browser engine Android Runtime Dalvik VM Dex files Compact and efficient than class files Limited memory and battery power Core Libraries Java 5 Std edition Collections, I/O etc… Application Framework API interface Activity manager – manages application life cycle. Applications Built in and user apps Can replace built in apps Agenda Mobile Application Development (MAD) Intro to Android platform Platform architecture Application building blocks Development tools Hello Android Application Building Blocks Activity IntentReceiver Service ContentProvider Activities Typically correspond to one UI screen But, they can: Be faceless Be in a floating window Return a value IntentReceivers Components that respond to broadcast ‘Intents’ Way to respond to external notification or alarms Apps can invent and broadcast their own Intent In