Hello everyone) Tell me, is there some practical example when you need to use requiredSize modifier,...

# compose

[Evgeny Taskaev]

Hello everyone)
Tell me, is there some practical example when you need to use requiredSize modifier, but not size modifier. And is requiredSize always worth using when exact dimensions are needed?)

[Albert Chang]

Modifier.requiredSize() is only needed if you want to override the size specified by Modifier.size() before in a modifier chain.
Modifier.size(10.dp).size(5.dp) makes the size 10dp and Modifier.size(10.dp).requiredSize (5.dp) makes the size 5dp.

[Albert Chang]

Or override the size coming from constraints, e.g. making an item 10dp in a 5dp box.

[Chris Sinco [G]]

It seems needed also in cases like DropdownMenu/Popups https://kotlinlang.slack.com/archives/CJLTWPH7S/p1644601987291849?thread_ts=1644440687.534929&channel=CJLTWPH7S&message_ts=1644601987.291849

[Albert Chang]

@Chris Sinco [G] I believe in that case Modifier.size(24.dp) will also work. Btw this is the bug.

[Chris Sinco [G]]

Ahhh that makes more sense. Required size was the workaround there 🤷🏻‍♂️

[Afzal Najam]

Another example is if you want to make a FloatingActionButton bigger than the size allowed by Scaffold (its parent), maybe for a transition animation. No matter how high of a value you put in size, it will still stay a weird rounded rectangle and not exceed a certain size.

But if you use requiredSize, it will go bigger.

[Albert Chang]

Yeah that’s exactly the second use case above.