thread sample code

tmid = thread.dispatch( -- dispatch an async task
    function()
        sys.msleep(2700)
        sys.toast("This is the 2.7th second")
    end
)
--
tid = thread.dispatch( -- dispatch another async task
    function()
        sys.msleep(300)
        for i=1,10 do
            sys.toast("Thread 2: "..i)
            sys.msleep(1000)
        end
        sys.toast("Should not reach here")
    end
)
--
-- iPhone 5C pinch-in in Photos example
--
thread.dispatch(function() -- dispatch a swipe task
    touch.on(59,165)
        :move(297,522)
        :msleep(500)
    :off()
end)
--
thread.dispatch(function() -- dispatch another swipe task
    touch.on(580,1049)
        :move(371,1049)
        :msleep(500)
    :off()
end)
--
proc_queue_clear("message-from-far-away")
eid = thread.register_event( -- register listener for "dictionary has value" event
    "message-from-far-away",
    function(val)
        sys.toast("Received message: "..val)
    end
)
--
sys.msleep(300)
thread.wait(tmid)
--
for i=1,10 do
    sys.toast("Thread 1: "..i)
    sys.msleep(400)
end
--
thread.kill(tid) -- kill Thread 2
thread.unregister_event("message-from-far-away", eid) -- unregister the event listener
--
sys.toast("Done")

Note: uses non-chapter APIs/methods proc_queue_clear、sys.msleep、sys.toast、touch.on、:move、:msleep、:off