What is the role of the Handler component in processing events or requests?

In Android, the Handler component is used for processing and managing a message queue and Runnable objects that need to be executed in a specific thread, most often in the UI thread. Handler allows sending and processing messages asynchronously, facilitating interaction between threads.

For example, if you need to perform a task in the main thread from a background thread, you can send a message or a Runnable through the Handler, which will be executed in the desired thread.