Android Components-Four components

The Android components are active (activity), intent (Intent), Services (service), content provider (contents Provider), broadcast receiver (broadcast receiver).

The four components of Android are: activity, service, content Provider, broadcast receiver (broadcast receiver).

Learning to learn, activity is a component that contains a user interface and is used primarily to interact with the user.

From a visual perspective, an activity occupies the current window, responds to all window events, has controls, menus, and other interface elements.

From the internal logic, the activity needs to do a lot of persistence in order to maintain the various interface states, but also need to manage the life cycle, and some of the jump logic.

Android Components-Four components