====== Android tips for developers ======
===== Generic guidelines for app design =====
[[http://developer.android.com/design/patterns/app-structure.html|Guidelines for app design]] describe the core principles of the Android application framework. Few things about **Activities** here:

  * **Activities** are the main building blocks of Android applications.
  * As the user moves through the user interface, they start activities one after the other.
  * Each activity has a life-cycle that is independent of the other activities in its application or task.
  * Android keeps a linear navigation history of activities the user has visited (activity stack).
  * Data can be transferred among activities using the **Intent** class.