When should you use Handler in Android development?

In Android development, a Handler is typically used for scheduling messages and runnables to be executed on a different thread, usually the main thread. Handlers are essential for updating the UI from a background thread, as only the main thread is allowed to make changes to the UI. Here are some scenarios where you should consider using a Handler:

• Updating UI: When you need to update UI components from a background worker thread.
• Delaying tasks: To schedule a task to run after a specified delay.
• Posting Runnables: When you want to run code on the main thread without blocking the UI.
• Cyclic tasks: For repeated tasks, like updating a timer or refreshing UI at regular intervals.