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The basic building block for user interface is aViewobject which is created from the View class and occupies a rectangular area on the screen and is responsible for drawing and eve

Input controls are the interactive components in your app's user interface. Android provides a wide variety of controls you can use in your UI, such as buttons, text fields,

Events are a useful way to collect data about a user's interaction with interactive components of Applications.Like button presses or screen touch etc. The Android framework

Astyleresource defines the format and look for a UI. A style can be applied to an individual View (from within a layout file) or to an entire Activity or application (from within

Implementing own components in pre built-in components with extending subclass with own defined class Android offers a great list of pre-built widgets like Button, TextView,

Android drag/drop framework allows your users to move data from one View to another View in the current layout using a graphical drag and drop gesture. As ofAPI 11drag and drop of

Anotificationis a message you can display to the user outside of your application's normal UI. When you tell the system to issue a notification, it first appears as an icon i