Android is an open source and Linux-based operating system for mobile devices such as smartphones and tablet computers. Android was developed by the Open Handset Alliance, led by Google, and other companies. This tutorial will teach you basic Android programming and will also take you through some advance concepts related to Android application development.
What is Android?
Android is an open source and Linux-based Operating System for mobile devices such as smartphones and tablet computers. Android was developed by the Open Handset Alliance, led by Google, and other companies.
Why Android ?
Features of Android
Android is a powerful operating system competing with Apple 4GS and supports great features. Few of them are listed below −
|Sr.No.||Feature & Description|
Android OS basic screen provides a beautiful and intuitive user interface.
GSM/EDGE, IDEN, CDMA, EV-DO, UMTS, Bluetooth, Wi-Fi, LTE, NFC and WiMAX.
SQLite, a lightweight relational database, is used for data storage purposes.
H.263, H.264, MPEG-4 SP, AMR, AMR-WB, AAC, HE-AAC, AAC 5.1, MP3, MIDI, Ogg Vorbis, WAV, JPEG, PNG, GIF, and BMP.
SMS and MMS
Android has native support for multi-touch which was initially made available in handsets such as the HTC Hero.
User can jump from one task to another and same time various application can run simultaneously.
Widgets are resizable, so users can expand them to show more content or shrink them to save space.
Supports single direction and bi-directional text.
Google Cloud Messaging (GCM) is a service that lets developers send short message data to their users on Android devices, without needing a proprietary sync solution.
A technology that lets apps discover and pair directly, over a high-bandwidth peer-to-peer connection.
A popular NFC-based technology that lets users instantly share, just by touching two NFC-enabled phones together.
Android applications are usually developed in the Java language using the Android Software Development Kit.
Once developed, Android applications can be packaged easily and sold out either through a store such as Google Play, SlideME, Opera Mobile Store, Mobango, F-droid and the Amazon Appstore.
Android powers hundreds of millions of mobile devices in more than 190 countries around the world. It’s the largest installed base of any mobile platform and growing fast. Every day more than 1 million new Android devices are activated worldwide.
This tutorial has been written with an aim to teach you how to develop and package Android application. We will start from environment setup for Android application programming and then drill down to look into various aspects of Android applications.
Categories of Android applications
There are many android applications in the market. The top categories are −
History of Android
What is API level?
API Level is an integer value that uniquely identifies the framework API revision offered by a version of the Android platform.
|Platform Version||API Level||VERSION_CODE|
|Android 4.4W||20||KITKAT_WATCH||KitKat for Wearables Only|
|Android 4.2, 4.2.2||17||JELLY_BEAN_MR1|
|Android 4.1, 4.1.1||16||JELLY_BEAN|
|Android 4.0.3, 4.0.4||15||ICE_CREAM_SANDWICH_MR1|
|Android 4.0, 4.0.1, 4.0.2||14||ICE_CREAM_SANDWICH|