패딩, 크기 및 fillMaxWidth

A Modifier is how you adjust a Composable: its size, spacing, and decoration. You chain calls onto it, one tweak at a time. 🧩

Almost every Composable takes a modifier parameter. You pass it as the first thing to change about that element.

Use padding to add empty space around a Composable. It pushes everything else away, giving your element room to breathe.

Sizes use dp, density-independent pixels. They look the same on every screen, so 16.dp is consistent across phones and tablets.

You can pad each side differently. Pass horizontal and vertical, or name individual sides like start and top.

Use size to give a Composable an exact width and height. One value makes it square; two values set each dimension.

Need only one dimension? Use width or height on their own and let the other side wrap its content naturally.

fillMaxWidth stretches a Composable to take up all the horizontal space its parent offers. Great for full-width buttons and rows.

Pass a fraction to fill only part of the space. fillMaxWidth(0.5f) takes half the available width instead of all of it.

Use fillMaxSize to expand in both directions at once. It is the shortcut for filling width and height together.

The real power is chaining: stack padding, size, and fill in one fluent call to shape an element exactly how you want.

Which modifier stretches a Composable across all the horizontal space its parent gives?

You learned to space, size, and stretch any Composable. padding adds room, size sets exact bounds, and fillMaxWidth grows to fit. ✨