Is there a way to get the height of a composable? Not the min and max height but the measured height...

# compose

[Alex]

Is there a way to get the height of a composable? Not the min and max height but the measured height? Code in thread.

[Alex]

BoxWithConstraints {
  TopAppBar(
    ...
  )
}

I would like to get the height of the TopAppBar here and store it in a remember{ mutableStateOf() } to use in other parts of the code.

[dimsuz]

You can use Modifier.onGloballyPositioned

[brandonmcansh]

There is a default available for app bar height as well. AppBarDefaults (as long as your not creating your own composable or causing it to grow in height.

[brandonmcansh]

App bar is generally a static height unless it's being animated

[cb]

Depends why you need the size. If you need the size to influence composition of sibling content you can use SubcomposeLayout (Scaffold is a good example). If you don't need to influence composition you can use Layout().

Modifier.onSizeChanged() or onGloballyPositioned() can easily result in composition loops, so should only be used as a last resort and with care.