Reading through the docs, the approximate flow from a user touching an
interface component (e.g. a button) to the touch event being processed by the
application is:
- User touches (e.g. a UIButton), a "touch" object is created and enqueued on
the dispatch thread (main thread)
- The touch object is dequeued, a UIEvent object is created and dispatched to
the target object (for handling)
The docs also state that the timestamp of the UIEvent [event timestamp] is the
time that the event was created. From this I assume that [event timestamp] is
somewhat later than the actual time that user touched the UIButton - how much
later depends on system activity around that time. Is this assumption correct?
If so, is there a way to get the time that the user touched the interface? The
small number (indeterminate) of milliseconds lag between touch time and event
time is important to me. I can tolerate processing the event after an
indeterminate lag but I do need to know when the actual touch occurred.
ac
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