How to communicate with the thread created by other activity

[cabernet1976]

Hi,

Could somebody help me about this issue described as below?

mainActivity create a thread (named thread1) which used to download files from web server.
And mainActivity start subActivity (maybe subActivity will create its sub activity then).
My question is: how subActivity (or subsubActivity ...) submit download request to thread1?

A solution I got is: make a queue in mainActivity, thread1 will always get request from this queue. But I don't think it is a good solution, for it is difficult to put requestion to the queue from subActivity.

Please tell me your good solution, or give me some comments.
Thank you very much.

[cabernet1976]

Don't forget me, please.

[cabernet1976]

If nobody reply here, I am going to use service to replace thread.
Those 3 service api samples give me some referrence.

Any comments about this topic are always welcomed.
Thank you.