Ограничение составного элемента нижней частью столбца ⇐ Android

[Anonymous]

Я и моя команда новички в Compose и пытаемся создать экран TopUp для клиента. Экран состоит из столбца, который содержит некоторое дополнение (в виде составного элемента) для TopAppBar, два составных элемента Card, кнопку, затем составной нижний колонтитул, который мне нужно ограничить нижней частью столбца, и, наконец, некоторое дополнение. (опять же в виде составного объекта), чтобы дать нам некоторое пространство между содержимым и нижней панелью навигации.
Сейчас мы используем разделитель с фиксированным значением dp, но очевидно, это не будет масштабироваться, поэтому на всех устройствах оно будет ограничено нижним краем. Как лучше всего добиться такого вида?
компонуемый экран:
@OptIn(ExperimentalComposeUiApi::class)
@Composable
fun TopUpScreen() {
Column(
horizontalAlignment = Alignment.CenterHorizontally, modifier = Modifier
.fillMaxWidth()
.fillMaxHeight()
.padding(horizontal = 16.dp)
) {
val viewModel = getViewModel()
TopBarPadding()
TopUpCardView(title = stringResource(id = R.string.choose_topup_amount)) {
var selectedCardIndex by remember { mutableStateOf(-1) }
Row(
horizontalArrangement = Arrangement.SpaceAround,
modifier = Modifier
.fillMaxWidth()
) {
Card(
shape = RoundedCornerShape(11.dp),
elevation = if (selectedCardIndex == 0) 1.dp else 0.dp,
backgroundColor = if (selectedCardIndex == 0) colorResource(id = R.color.bottom_modal_drawer_background) else colorResource(
id = R.color.more_screen_item_background
),
modifier = Modifier
.width(71.dp)
.height(56.dp)
.shadow(
if (selectedCardIndex == 0) 8.dp else 0.dp,
shape = RoundedCornerShape(11.dp)
)
.clickable {
selectedCardIndex = 0
viewModel.topUpAmount = 20.0
}
) {
Text(
"€20",
fontSize = 16.sp,
fontWeight = FontWeight.Normal,
textAlign = TextAlign.Center,
modifier = Modifier.wrapContentHeight()
)
}
Card(
shape = RoundedCornerShape(11.dp),
elevation = if (selectedCardIndex == 1) 1.dp else 0.dp,
backgroundColor = if (selectedCardIndex == 1) colorResource(id = R.color.bottom_modal_drawer_background) else colorResource(
id = R.color.more_screen_item_background
),
modifier = Modifier
.width(71.dp)
.height(56.dp)
.shadow(
if (selectedCardIndex == 1) 8.dp else 0.dp,
shape = RoundedCornerShape(11.dp)
)
.clickable {
selectedCardIndex = 1
viewModel.topUpAmount = 40.0
}
) {
Text(
"€40",
fontSize = 16.sp,
fontWeight = FontWeight.Normal,
textAlign = TextAlign.Center,
modifier = Modifier.wrapContentHeight()
)
}
Card(
shape = RoundedCornerShape(11.dp),
elevation = if (selectedCardIndex == 2) 1.dp else 0.dp,
backgroundColor = if (selectedCardIndex == 2) colorResource(id = R.color.bottom_modal_drawer_background) else colorResource(
id = R.color.more_screen_item_background
),
modifier = Modifier
.width(71.dp)
.height(56.dp)
.shadow(
if (selectedCardIndex == 2) 8.dp else 0.dp,
shape = RoundedCornerShape(11.dp)
)
.clickable {
selectedCardIndex = 2
viewModel.topUpAmount = 70.0
}
) {
Text(
"€70",
fontSize = 16.sp,
fontWeight = FontWeight.Normal,
textAlign = TextAlign.Center,
modifier = Modifier.wrapContentHeight()
)
}
Card(
shape = RoundedCornerShape(11.dp),
elevation = if (selectedCardIndex == 3) 1.dp else 0.dp,
backgroundColor = if (selectedCardIndex == 3) colorResource(id = R.color.bottom_modal_drawer_background) else colorResource(
id = R.color.more_screen_item_background
),
modifier = Modifier
.width(71.dp)
.height(56.dp)
.shadow(
if (selectedCardIndex == 3) 8.dp else 0.dp,
shape = RoundedCornerShape(11.dp)
)
.clickable {
selectedCardIndex = 3
viewModel.topUpAmount = 100.0
}
) {
Text(
"€100",
fontSize = 16.sp,
fontWeight = FontWeight.Normal,
textAlign = TextAlign.Center,
modifier = Modifier.wrapContentHeight()
)
}
}
}
Spacer(modifier = Modifier.padding(16.dp))

val focusManager = LocalFocusManager.current
val keyboardController = LocalSoftwareKeyboardController.current
TopUpCardView(title = stringResource(id = R.string.enter_custom_topup_amount)) {
var customAmountTxt by remember { mutableStateOf(TextFieldValue()) }
TextField(
value = customAmountTxt,
onValueChange = {
customAmountTxt = it
},
maxLines = 1,
singleLine = true,
leadingIcon = {
Icon(
painter = painterResource(id = R.drawable.ic_euro),
contentDescription = stringResource(
R.string.euro_icon_desc
),
modifier = Modifier.padding(
start = 16.dp,
end = 16.dp,
top = 12.dp,
bottom = 12.dp
)
)
},
keyboardOptions = KeyboardOptions(
keyboardType = KeyboardType.Number,
imeAction = ImeAction.Done
),
keyboardActions = KeyboardActions(onDone = {
focusManager.clearFocus()
keyboardController?.hide()
}),
shape = RoundedCornerShape(6.dp),
colors = TextFieldDefaults.textFieldColors(
backgroundColor = colorResource(id = R.color.white),
textColor = colorResource(id = R.color.black),
focusedIndicatorColor = colorResource(id = R.color.white),
unfocusedIndicatorColor = colorResource(id = R.color.white),
disabledIndicatorColor = colorResource(id = R.color.white),
cursorColor = colorResource(id = R.color.black)
),
textStyle = TextStyle(
color = Color.Black,
fontSize = 16.sp,
fontWeight = FontWeight.Normal,
textAlign = TextAlign.Start
),
modifier = Modifier
.height(50.dp)
.fillMaxWidth()
.shadow(8.dp, shape = RoundedCornerShape(6.dp))
)
}
Spacer(modifier = Modifier.padding(32.fixedDp()))
val context = LocalContext.current //todo:sp remove when you remove the toast
MyButton(
text = stringResource(id = R.string.continue_text),
buttonType = MyButtonType.PRIMARY,
onClick = {
Toast.makeText(context, "[TODO] Navigate to card screen", Toast.LENGTH_SHORT).show()
})
//todo:sp replace the spacer implementation with something that will constraint the
// footer to the bottom as it should
Spacer(modifier = Modifier.height(130.dp))
AcceptedCardsFooter()
BottomBarPadding()
}
}

TopUpCardView:
@Composable
fun TopUpCardView(
title: String,
modifier: Modifier = Modifier,
mainBody: @Composable () -> Unit
) {
Card(
shape = RoundedCornerShape(13.dp),
elevation = 10.dp,
modifier = modifier
.fillMaxWidth()
.height(131.dp)
) {
Column(modifier = Modifier.padding(vertical = 20.dp, horizontal = 16.dp)) {
Text(
text = title,
fontSize = 16.sp,
fontWeight = FontWeight.Bold,
textAlign = TextAlign.Start
)
Spacer(modifier = Modifier.padding(9.dp))
mainBody()
}
}
}

Нижний колонтитул:
@Composable
fun AcceptedCardsFooter(isTransparent: Boolean = false) {
Row(modifier = Modifier
.fillMaxWidth()
.clip(RoundedCornerShape(10.dp))
.background(
if (isTransparent) {
Color.Transparent
} else {
colorResource(id = R.color.registration_note_background)
}
)
.padding(bottom = 12.dp, top = 12.dp, start = 16.dp, end = 14.dp),
horizontalArrangement = Arrangement.SpaceBetween,
verticalAlignment = Alignment.CenterVertically
) {
Text(text = LocalContext.current.getString(R.string.accepted_cards),
fontSize = 12.sp,
color = colorResource(id = R.color.Black_100)
)
Row(verticalAlignment = Alignment.CenterVertically) {
Image(painter = painterResource(id = R.drawable.visa), contentDescription = "")
Spacer(modifier = Modifier.padding(17.fixedDp()))
Image(painter = painterResource(id = R.drawable.mastercard), contentDescription = "")
Spacer(modifier = Modifier.padding(10.fixedDp()))
Image(painter = painterResource(id = R.drawable.american_express), contentDescription = "")
}
}
}


Подробнее здесь: https://stackoverflow.com/questions/714 ... f-a-column