I recently started working with Jetpack Compose. I've got the following composable:

Question

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 @Composable fun SearchScreen(navController: NavHostController) { Scaffold( topBar = { SearchBar() }, content = { Column(modifier = Modifier .fillMaxSize() .verticalScroll(rememberScrollState())) { Text(stringResource(id = R.string.genreFilter)) Row( modifier = Modifier .horizontalScroll(rememberScrollState()), horizontalArrangement = Arrangement.spacedBy(4.dp) ) { // some nested Composables } }}, ) }

But with this code as-is, the whole code within content = {...} is being underlined in red saying Jetpack Compose: Content padding parameter it is not used. I do not understand why I am getting this error.

Thracian · Accepted Answer · 2022-10-01 07:24:59Z

It's a lint error warning you about not using PaddingValues coming from content.

@Composable fun Scaffold( modifier: Modifier = Modifier, topBar: @Composable () -> Unit = {}, bottomBar: @Composable () -> Unit = {}, snackbarHost: @Composable () -> Unit = {}, floatingActionButton: @Composable () -> Unit = {}, floatingActionButtonPosition: FabPosition = FabPosition.End, containerColor: Color = MaterialTheme.colorScheme.background, contentColor: Color = contentColorFor(containerColor), contentWindowInsets: WindowInsets = ScaffoldDefaults.contentWindowInsets, content: @Composable (PaddingValues) -> Unit )

You can either add it as Modifier.padding(it) to your Column or hover red underlined code and click red light bulb and select suppress

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