Introduction Features Architecture Application components Activating components Guidelines Bestpractice Application developed on Android Conclusion
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
Handset layout Storage Connectivity Messaging Multiple language support Web browser Java support Media support Multi touch Video calling External storage
Built in and user appsCan replace built in apps
API interfaceActivity manager – manages application life cycle.
C/C++ libraries Interface through Java Surface manager – Handling UI Windows 2D and 3D graphics Media codecs, SQLite, Browser engine
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…
Works as a HAL Device drivers Memory management Process management Networking
Indents Method for activating Components startActivity() or startActivityForResult Intent to startService()or Intent to bindService(). sendBroadcast(),or sendStickyBroadcast() sendOrderedBroadcast () query() on a ContentResolver
Guidelines for creating an application are as follows:Build your activity designs based on fragmentsUse the action barImplement flexible layouts
Design for securityDesign for compatibilityDesign for Accessibility servicesDesign for Responsiveness
In September 2008, Motorola confirmed that it was working on hardware products that would run Android. Huawei Technologies is planning to launch smart phones that would run Android in Q1 2009. Lenovo is working on an Android-based mobile phone that supports the Chinese 3G TD-SCDMA standard.
HTC is planning a "portfolio" of Android based phones to be released summer of 2009. Sony Ericsson is planning to release an Android based handset in the summer of 2009. Samsung plans to offer a phone based on Google’s Android operating system in the second quarter of 2009. GiiNii Movit Mini is a Internet device based on Googles Android operating system
we concluded that the Androids platform which has developed by Google is going to play major role in Mobile applications because as it is an open source and it is also easy to develop mobile applications using Android as because in order to develop these applications all the APIs are available and these APIs are as same as java APIs which are easy to understand.
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