Child View Controllers don't get correct topLayoutGuide length

Question

Created Aug ’16

Replies 4

Boosts 0

Participants 3

I reported this as radar 27513192 but it's been marked as duplicate of 27434425 (closed). But this is still happening in Beta 4. Should I report this bug again?

I have a simple project that creates a child VC in MessagesViewController in viewDidLoad. And then in both Child and Messages VC, I print out the topLayoutGuide and bottomLayoutGuide lengths in viewDidLayoutSubviews().

I then simply switch from compact to expanded mode. Note that going to compact mode, the child does not get the topLayoutGuide.length of 0 but the MessagesVC does get one.

[Click Up Arrow]

WillTransition to Expanded
MessagesVC - TopLayoutAmount. Parent: Optional(20.0) Mine: 86.0
MessagesVC - BottomLayoutAmount. Parent: Optional(0.0) Mine: 44.0
MessagesVC - TopLayoutAmount. Parent: Optional(20.0) Mine: 86.0
MessagesVC - BottomLayoutAmount. Parent: Optional(0.0) Mine: 44.0
ChildVC - TopLayoutAmount. Parent: Optional(86.0) Mine: 86.0
ChildVC - BottomLayoutAmount. Parent: Optional(44.0) Mine: 44.0
DidTransition to Expanded

[Click Down Arrow]

WillTransition to Compact
MessagesVC - TopLayoutAmount. Parent: Optional(20.0) Mine: 86.0
MessagesVC - BottomLayoutAmount. Parent: Optional(0.0) Mine: 44.0
ChildVC - TopLayoutAmount. Parent: Optional(86.0) Mine: 86.0
ChildVC - BottomLayoutAmount. Parent: Optional(44.0) Mine: 44.0
MessagesVC - TopLayoutAmount. Parent: Optional(20.0) Mine: 0.0
MessagesVC - BottomLayoutAmount. Parent: Optional(0.0) Mine: 44.0
DidTransition to Compact

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Answer 1

ortwin OP

Aug ’16

Perhaps slightly related, I filed two radars on this topic (also on Open Radar), both of them being still open:

r27553447 iMessage extension sets wrong bottom edge inset in expanded mode w/ multiline message

r27453762 iMessage extension sets wrong bottom edge insets on collapse

Btw, I'd appreciate if you could publish your radar on Open Radar, so I could dupe it.

0

Answer 2

artmin OP

Aug ’16

Sorry for the noob response but where is Open Radar? I know it's basically a duplicate bug reporting site for filing bugs to Apple.

Thanks in advance ortwin.

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Answer 3

ortwin OP

Aug ’16

I'm sorry, I didn't explain. Just go to openradar . appspot . com and login with a Google account. I didn't put a link to avoid moderation.

To simplify filing and duplicating bugs, use the excellent QuickRadar . com app. It not only allows you to file a bug simultaneously to Apple and OpenRadar but also supports the rdar URL scheme. If the respective bug is published on OpenRadar, it automatically fetches the information so you can file a dupe in just 2 seconds.

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Answer 4

huyouare OP

Aug ’16

Has there been any update to this? It seems to have regressed again on Beta 5.

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