To be fair, doesn’t recommend it but points out both ways in his article.
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Oh, didn’t notice that. To add “why” to this “no”: even completed animations have overhead.
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can I quote you on that (in upcoming a blog post)? That is: can I mention that the overhead exists and link to this tweet?
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Here is the link. Fingers crossed that my understanding of the work the render sever does is correct. ronnqvi.st/multiple-anima
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It so happens that right now, last-one-added wins, so if you add an absolute anim, then an additive anim, the latter wins.
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is it foolish to rely on that behavior or should one simply not mix non-additive and additive anims with the same beginTime?
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It would probably be too disruptive to change. To be safe: set additive beginTime to +1000, timeOffset to -1000. :)
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Eh, scratch that. That's just relying on another implementation detail. No better.
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btw, is the "animateWithDuration:0 uses parent context" behavior documented anywhere (46min into #236)? It looked odd to me.
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Not very effectively. See docs for UIViewAnimationOptionOverrideInheritedDuration.
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well what do you know :) I wouldn't think you could do that based only on those docs.
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UIVAOOD If these key were not present, the duration and curve of the outer animation block would be used instead. [from doc]