What kind of permission needs to Android Apps

The basic concept of android is JFX(or JSP) like development of UI in java. You should know that android testing using emulator is very slow (unless you do it on an actual device eg droid incredible)- and unlike iphone you can freely deploy your apps on your phone.

Android (like java permission file or vista/widows 7 model) like to warn before installing application - and applications have to indicate what kind of permission it needs. The Android Open Source Project (AOSP) is tasked with the maintenance and further development of Android.

Android consists of a kernel based on the Linux kernel, with middleware, libraries and APIs written in C and application software running on an application framework which includes Java-compatible libraries based on Apache Harmony. Android uses the Dalvik virtual machine with just-in-time compilation to run compiled Java code.

First, we will look at techniques for building Android applications that adapt to the ways in which mobile apps differ from traditional desktop or Web-based apps: constrained resources, small screen sizes, varying display resolutions, intermittent network connectivity, specialized sensors, security restrictions, and so forth.

Second, we look at best practices for making Android Application Development flexible: using XML-based layouts, managing multimedia, storing user data, networking via Bluetooth and Wi-Fi, determining device location and orientation, deploying applications, and gracefully handling shutdowns and restarts to the application.

Optional topics may include embedding Web components with WebKit, showing maps with the Google Maps plugin, and storing local data with SQLite. Students will be provided links to download free tools for building and testing Android apps; there is no requirement that developers have own a physical Android device.

Android has a large community of Android Apps Developer writing applications ("apps") that extend the functionality of the devices. Developers write primarily in a customized version of Java. There are currently more than 250,000 apps available for Android. Apps can be downloaded from third-party sites or through online stores such as Android Market, the app store run by Google.

Android applications are developed using the Java language. As of now, that’s really your only option for native applications. Java is a very popular programming language developed by Sun Microsystems (now owned by Oracle).

Developed long after C and C++, Java incorporates many of the powerful features of those powerful languages while addressing some of their drawbacks. Still, programming languages are only as powerful as their libraries. These libraries exist to help developers build applications.

Some of the Java’s important core features are:

* It’s easy to learn and understand

* It’s designed to be platform-independent and secure, using Virtual machines

* It’s object-oriented

Android relies heavily on these Java fundamentals. The Android SDK includes many standard Java libraries (data structure libraries, math libraries, graphics libraries, networking libraries and everything else you could want) as well as special Android libraries that will help you develop awesome Android applications.

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