Android Handler in Child Thread

1 year ago
Sophia Anderson
1 minute

To use a handler in a child thread, you need to create a Looper object in the child thread and then create a Handler object using the Looper object.具specific steps are as follows:

  1. Create a Looper object in a background thread by calling Looper.prepare().
  2. Create a Handler object in a child thread, specifying the Looper object as the message queue for that Handler.
  3. The logic of handling messages in the handleMessage() method of the Handler object.
  4. Send messages to a Handler in a child thread using the sendMessage() or post() method of the Handler object.

By following the above steps, you can use Handler in a child thread to handle messages, enabling UI updates or other operations within the child thread.

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