android event handling

In Android, Event Handling is the process of responding to user actions or system events, such as button clicks, screen touches, and device orientation changes. Event handling allows an Android application to be interactive and respond to user input.

Here are some key points to know about Android Event Handling:

  1. Event Handling is used to capture and respond to user actions or system events.

  2. Event Handling can be implemented using several different techniques, including callbacks, listeners, and handlers.

  3. Callbacks are methods that are invoked automatically by the Android system when an event occurs.

  4. Listeners are objects that are registered with a UI element and are notified when a specific event occurs.

  5. Handlers are used to perform tasks on a separate thread, in response to an event.

  6. There are several types of events that can be handled in Android, including click events, touch events, and orientation change events.

  7. Event Handling can be implemented in several different components of an Android application, including activities, fragments, and custom views.

  8. Android provides a set of pre-defined event handlers, such as OnClickListener and OnTouchListener, which can be used to respond to common events.