Re: Profound UITableView rendering-performance problem, but only at certain positions?
Re: Profound UITableView rendering-performance problem, but only at certain positions?
- Subject: Re: Profound UITableView rendering-performance problem, but only at certain positions?
- From: Gavin Stokes <email@hidden>
- Date: Tue, 24 Jul 2012 02:48:06 -0700
Thanks for that suggestion. I'm only reloading visible cells, so I would
expect them to already be instantiated and readily available in memory.
However, if cellForRow... is called, I guess there is an attempt to
dequeue. I'd have to take a look at how much time is spent in that method.
At any rate, it's clear that all of this can be done with adequate
performance. The problem only occurs when the table is scrolled within a
50-pixel range of position, and that position varies (so far unpredictably)
with row height. If the table is scrolled more or less than that, it works
fine. The number of animating rows makes no difference (and there are only
a few anyway).
And performance isn't the only issue; the rendering is defective, with
elements (like simple text labels) being rendered slightly out of position
and cell images flying up from the bottom of the screen and settling into
place.
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