I wanna know about max thread number for one application.
You know Thread.activeCount() returns the number of active Threads in the running Thread\'s group and its s
There is no maximum enforced by code that I am aware of. That being said, even for network I/O, diminishing returns will set in fairly quickly, since the CPU speed of Android devices is fairly small, and RAM is fairly limited.
Please consider using AsyncTask
instead of your own threads. This uses a thread pool set up by Android, and so it will use a pool size that the core Android team believes is effective for the platform.