uAndroid's Security Framework

                            uAndroid's Security Framework

The Google Android mobile phone platform is one of the most anticipated smartphone operating systems. Android defines a new component-based framework for developing mobile applications, where each application is comprised of different numbers and types of components. Activity components form the basis of the user interface; each screen presented to the user is a different Activity. Service components provide background processing that continues even after its application loses focus. Services also define arbitrary interfaces for communicating with other applications. Content Provider components share information in relational database form. For instance, the system includes an application with a Content Provider devoted to sharing the user's address book upon which other applications can query. Finally, Broadcast Receiver components act as an asynchronous mailbox for messages from the system and other applications. As a whole, this application framework supports a flexible degree of collaboration between applications, where dependencies can be as simple or complex as a situation requires.