Question

Handler in android ?

Answer 1

android.os.Handler allows us to send and process Message and Runnable objects associated with a thread's MessageQueue. Each Handler instance is associated with a single thread and that thread's message queue. Handler used for: ... Managing messages in the queue.

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Answer 2

Answer:

A Handler allows communicating back with UI thread from other background thread . This is useful in android as android doesn't allow other threads to communicate directly with UI thread. How Handler works. A Handler allows you to send and process Message and Runnable objects associated with a thread's MessageQueue.

Explanation: