JetPack Compose - weight() in Row in Card doesn't work - android

When creating an Android app, I put some Composables in a Row of a Card, as shown below, and it did not work as I expected. The Composable that I put "weight(1f)" on was no longer showing up.
data class Test(
val title: String,
val text: String
)
#Composable
fun CardRowSample(
modifier: Modifier = Modifier,
) {
val testList =
listOf(
Test("AAAA", "1,2,3,4,5,6,7,8,9,10"),
Test("BBBB", "11,12,13,14,15,16,17,18,19,20")
)
LazyColumn(
modifier = modifier
) {
items(
items = testList
) {
test ->
Card(
elevation = 12.dp,
backgroundColor = Color.LightGray,
modifier = Modifier
.fillMaxWidth()
.heightIn(min = 50.dp)
.width(40.dp)
.requiredHeight(intrinsicSize = IntrinsicSize.Min)
.padding(
horizontal = 20.dp,
vertical = 20.dp
)
.border(
width = 1.dp,
color = Color.Black,
shape = RectangleShape
)
) {
Row(
modifier = Modifier.fillMaxWidth()
) {
Icon(
modifier = Modifier
.padding(horizontal = 5.dp)
.align(Alignment.CenterVertically),
imageVector = Icons.Filled.Check,
contentDescription = null
)
Text(
text = test.title,
fontSize = 20.sp,
modifier =
Modifier
.width(120.dp)
.padding(horizontal = 10.dp, vertical = 10.dp)
)
Text(
text = test.text,
fontSize = 20.sp,
modifier = Modifier
.weight(1f)//it doesn't work!!
.padding(horizontal = 10.dp, vertical = 10.dp)
)
}
}
}
}
}
My ideal image of the layout:
I wrote the code referring to the following question, Weights in Jetpack compose, but I can't figure out why this is happening. I put "weight" on everything and added fillParentMaxSize to the Row's modifier, but I wasn't able to solve this problem.
What should I do next to solve this problem?

Problem is not with Modifier.weight(1f). It's because of Modifier.requiredHeight(IntrinsicSize.Min)
Card(
elevation = 12.dp,
backgroundColor = Color.LightGray,
modifier = Modifier
.fillMaxWidth()
.heightIn(min = 50.dp)
// .width(40.dp)
// .requiredHeight(intrinsicSize = IntrinsicSize.Min)
.padding(
horizontal = 20.dp,
vertical = 20.dp
)
.border(
width = 1.dp,
color = Color.Black,
shape = RectangleShape
)
)
Also Modifier.width(40.dp) is redundant because you have another width modifier Modifier.fillMaxWidth() before that.
When Modifier.requiredIn with Intrinsic size modifiers act strange. Composable gets measured twice and with Infinity constraints
LAYOUT constraints: Constraints(minWidth = 0, maxWidth = 1080, minHeight = 0, maxHeight = Infinity), width: 1080, height: 235
LAYOUT constraints: Constraints(minWidth = 0, maxWidth = Infinity, minHeight = 235, maxHeight = 235), width: 510, height: 235
That's the second measurement breaks width because of maxWidth = Infinity. 1080px is full width on my device
to see Constrains and Composable width and height you can use
Card(
elevation = 12.dp,
backgroundColor = Color.LightGray,
modifier = Modifier
.fillMaxWidth()
.heightIn(min = 50.dp)
// .width(40.dp)
.requiredHeight(intrinsicSize = IntrinsicSize.Min)
.layout { measurable, constraints ->
val placeable = measurable.measure(constraints)
println("LAYOUT constraints: $constraints, width: ${placeable.width}, height: ${placeable.height}")
layout(placeable.width,placeable.height){
placeable.placeRelative(0,0)
}
}
.padding(
horizontal = 20.dp,
vertical = 20.dp
)
.border(
width = 1.dp,
color = Color.Black,
shape = RectangleShape
)
)

An alternative to the Thracian's answer is to apply Modifier.height(IntrinsicSize.Min) to your Card and fillMaxHeight() to the Icon.
Card(
elevation = 12.dp,
backgroundColor = Color.LightGray,
modifier = Modifier
.fillMaxWidth()
.heightIn(min = 50.dp)
.height(intrinsicSize = IntrinsicSize.Min)
.padding(
horizontal = 20.dp,
vertical = 20.dp
)
.border(
width = 1.dp,
color = Color.Black,
shape = RectangleShape
)
) {
Row(
modifier = Modifier.fillMaxWidth()
) {
Icon(
modifier = Modifier
.fillMaxHeight()
.padding(horizontal = 5.dp)
.align(Alignment.CenterVertically),
imageVector = Icons.Filled.Check,
contentDescription = null
)
Text(
text = test.title,
fontSize = 20.sp,
modifier =
Modifier
.width(120.dp)
.padding(horizontal = 10.dp, vertical = 10.dp)
)
Text(
text = test.text,
fontSize = 20.sp,
modifier = Modifier
.weight(1f)
.padding(horizontal = 10.dp, vertical = 10.dp)
)
}
}
}

Related

TextField overflow and softwrap not working with Compose Constraint Layout

I've been trying to build a list with a Card in it formatted like this:
The difficulty here is that the title e.g. "Bread" and ingredient name e.g. "Flour" can be very long and thus I want to have an ellipsis to keep things manageable i.e. "My Long Flour name" will be displayed as "My Long Flou..." or as much space as is allowed.
The picture size and the gram and percent widths are constant .dp values.
Ellipsis worked fine when it was in a Column but with ConstraintLayout it doesn't seem to work and I get this:
here's my code
#Composable
fun BakeItem(
modifier: Modifier = Modifier,
bake: Bake,
cardClicked: () -> Unit,
ingredeints: List<Ingredient>
) {
Card(
modifier = modifier
.padding(start = 16.dp, end = 16.dp, top = 8.dp, bottom = 8.dp)
.clickable { cardClicked() }
.fillMaxSize()
.wrapContentHeight(),
border = BorderStroke(4.dp, MaterialTheme.colorScheme.secondary),
shape = RoundedCornerShape(14.0.dp),
colors = cardColors(
containerColor = MaterialTheme.colorScheme.background
)
) {
val context = LocalContext.current
val uri = remember(bake.imagePath) { Uri.parse(bake.imagePath) }
// Card Content
ConstraintLayout(
modifier = modifier
.fillMaxSize()
.padding(start = 16.dp, top = 8.dp, end = 8.dp, bottom = 8.dp)
) {
val (titleRef, gramColRef, ingrColRef, percentColRef,
imageRef, dateRef, starsRef) = createRefs()
Text(
modifier = modifier
.padding(4.dp)
.constrainAs(titleRef) {
top.linkTo(parent.top, margin = 8.dp)
// end.linkTo(imageRef.start, margin = 8.dp)
start.linkTo(parent.start, margin = 8.dp)
}
.background(Color(0xffeeeeee)),
// textAlign = TextAlign.Left,
text = if (bake.recipeName.isEmpty()) "<Unnamed>" else bake.recipeName,
style = MaterialTheme.typography.titleLarge,
fontWeight = FontWeight.Bold,
color = MaterialTheme.colorScheme.primary,
softWrap = false,
overflow = TextOverflow.Ellipsis,
)
Column(
horizontalAlignment = Alignment.End,
modifier = modifier
.width(50.dp)
.constrainAs(gramColRef) {
top.linkTo(titleRef.bottom, margin = 8.dp)
end.linkTo(ingrColRef.start, margin = 8.dp)
start.linkTo(parent.start, margin = 8.dp)
}
) {
ingredeints.forEachIndexed { _, it ->
Text(
text = it.weightGram,
style = MaterialTheme.typography.titleSmall,
softWrap = false,
overflow = TextOverflow.Ellipsis
)
}
}
Column(
modifier = modifier
.constrainAs(ingrColRef) {
top.linkTo(titleRef.bottom, margin = 8.dp)
start.linkTo(gramColRef.end, margin = 8.dp)
end.linkTo(ingrColRef.start, margin = 8.dp)
},
) {
ingredeints.forEachIndexed { _, it ->
Text(
text = it.name,
style = MaterialTheme.typography.titleSmall,
softWrap = false,
overflow = TextOverflow.Ellipsis
)
}
}
Column(
modifier = modifier
.width(50.dp)
.constrainAs(percentColRef) {
top.linkTo(titleRef.bottom, margin = 8.dp)
end.linkTo(imageRef.start, margin = 8.dp)
start.linkTo(ingrColRef.end, margin = 8.dp)
},
horizontalAlignment = Alignment.End
) {
ingredeints.forEachIndexed { i, it ->
Text(
text = if (i == 0) "" else it.bakingPercent,
style = MaterialTheme.typography.titleSmall,
softWrap = false,
overflow = TextOverflow.Ellipsis
)
}
}
Text(
modifier = modifier.padding(
top = 8.dp,
start = 4.dp,
end = 4.dp,
bottom = 4.dp
),
text = bake.notes,
style = MaterialTheme.typography.titleSmall,
color = MaterialTheme.colorScheme.onSurface,
maxLines = 3
)
if (bake.imagePath.isNotEmpty()) {
Image(
modifier = modifier
.constrainAs(imageRef) {
top.linkTo(parent.top, margin = 8.dp)
end.linkTo(parent.end, margin = 8.dp)
}
.padding(4.dp)
.requiredSize(150.dp)
.clip(RoundedCornerShape(14.dp))
.border(
4.dp,
MaterialTheme.colorScheme.primaryContainer,
RoundedCornerShape(14.dp)
),
painter = rememberAsyncImagePainter(
remember(uri) {
ImageRequest.Builder(context)
.data(uri)
// TODO, think of caching improvements
// .diskCacheKey(uri.toString() + key.value)
// .memoryCacheKey(uri.toString() + key.value)
.diskCachePolicy(CachePolicy.DISABLED)
.memoryCachePolicy(CachePolicy.DISABLED)
.build()
}
),
contentScale = ContentScale.Crop,
contentDescription = "Image of your bake"
)
} else {
Spacer(modifier = modifier
.background(Color.Blue)
.width(150.dp)
.height(10.dp)
.constrainAs(imageRef) {
top.linkTo(parent.top, margin = 8.dp)
end.linkTo(parent.end, margin = 8.dp)
})
}
Text(
modifier = modifier
.padding(4.dp)
.constrainAs(dateRef) {
bottom.linkTo(parent.bottom, margin = 8.dp)
top.linkTo(imageRef.bottom, margin = 8.dp)
end.linkTo(parent.end, margin = 8.dp)
},
text = bake.startTime.toString(),
style = MaterialTheme.typography.titleMedium,
color = MaterialTheme.colorScheme.onSurface,
// textAlign = Layout.Alignment.ALIGN_CENTER
)
createHorizontalChain(
gramColRef, ingrColRef, percentColRef, imageRef,
chainStyle = ChainStyle.SpreadInside
)
createVerticalChain(
imageRef, dateRef,
chainStyle = ChainStyle.SpreadInside
)
createHorizontalChain(
titleRef, imageRef,
chainStyle = ChainStyle.SpreadInside
)
}
}
}
In the title you have to add as constrain width = Dimension.fillToConstraints, end.linkTo(imageRef.start, margin = 8.dp) and maxLines = 1:
Text(
modifier = Modifier
.padding(4.dp)
.constrainAs(titleRef) {
top.linkTo(parent.top, margin = 8.dp)
end.linkTo(imageRef.start, margin = 8.dp)
start.linkTo(parent.start, margin = 8.dp)
width = Dimension.fillToConstraints
}
.background(Color(0xffeeeeee)),
text = "Recipe Name",
//...
maxLines = 1,
overflow = TextOverflow.Ellipsis,
)
For the list instead of using 3 Columns you do can something different.
For the ingredient name add the weight(1f) modifier and the maxLines = 1
Column(
modifier = Modifier
.constrainAs(listRef) {
top.linkTo(titleRef.bottom, margin = 8.dp)
end.linkTo(imageRef.start, margin = 8.dp)
start.linkTo(parent.start, margin = 8.dp)
width = Dimension.fillToConstraints
}
) {
//forEach Row...
Row(Modifier.fillMaxWidth()) {
Text(text = "50g", Modifier.width(xx.dp), textAlign = TextAlign.End)
Text(
text = "Very long text long text",
Modifier
.padding(start=4.dp)
.weight(1f),
maxLines = 1,
overflow = TextOverflow.Ellipsis
)
Text(text = "75%", Modifier.width(xx.dp), textAlign = TextAlign.End)
}
}

JetPack Compose Button with drawable

How can we achieve this in jetpack compose
I'm doing something like this
Button(
elevation = ButtonDefaults.elevation(
defaultElevation = 0.dp,
pressedElevation = 8.dp,
disabledElevation = 0.dp
),
onClick = { onClick },
shape = RoundedCornerShape(28.dp),
modifier = modifier
.fillMaxWidth()
.shadow(0.dp),
contentPadding = PaddingValues(15.dp),
colors = ButtonDefaults.buttonColors(backgroundColor = Color.White),
border = BorderStroke(1.dp, Color.Grey)
) {
Box(modifier = modifier.fillMaxWidth(),
contentAlignment = Alignment.Center) {
Icon(
imageVector = imageVector,
modifier = Modifier
.size(18.dp),
contentDescription = "drawable icons",
tint = Color.Unspecified
)
Spacer(modifier = Modifier.width(10.dp))
Text(
text = buttonText,
color = Color.Black,
textAlign = TextAlign.Center
)
}
}
So as you can see the Google logo is just left of the text I need it at the start of the box so how can I do this.
You can use align(Alignment.CenterStart) on the Icon's Modifier parameter to center the icon around the start of the Box Composable. This alignment will have priority over the Box's alignment parameter.
You can also delete the Spacer composable because the Box layout children are stacked one on top of the other in the composition order. So the Spacer composable is basically laying below the Text composable in the center.
If you want some space between the Icon and the Text, you could use some padding around the Icon instead.
Try this (It worked for me) :
Box(modifier = modifier.fillMaxWidth(),
contentAlignment = Alignment.Center) {
Icon(
imageVector = imageVector,
modifier = Modifier
.size(18.dp)
.align(Alignment.CenterStart),
contentDescription = "drawable icons",
tint = Color.Unspecified
)
Text(
text = buttonText,
color = Color.Black,
textAlign = TextAlign.Center
)
}
#Composable
fun GoogleButton(
modifier: Modifier = Modifier,
imageVector: ImageVector,
buttonText: String,
onClick: (isEnabled: Boolean) -> Unit = {},
enable: Boolean = true,
backgroundColor: Color,
fontColor: Color,
) {
Button(
onClick = { onClick(enable) },
modifier = modifier
.fillMaxWidth()
.shadow(0.dp)
.noInteractionClickable(enabled = false) { onClick(enable) },
elevation = ButtonDefaults.elevation(
defaultElevation = 0.dp,
pressedElevation = 0.dp,
hoveredElevation = 0.dp,
focusedElevation = 0.dp
),
shape = RoundedCornerShape(28.dp),
contentPadding = PaddingValues(15.dp),
colors = ButtonDefaults.buttonColors(
backgroundColor = backgroundColor,
contentColor = fontColor
),
border = BorderStroke(1.dp, MaterialTheme.colors.getButtonBorderStroke)
) {
Box(
modifier = Modifier
.fillMaxWidth(),
contentAlignment = Alignment.Center
) {
Row(
modifier = Modifier
.fillMaxWidth()
.align(Alignment.CenterStart)
) {
Spacer(modifier = Modifier.width(4.dp))
Icon(
imageVector = imageVector,
modifier = Modifier
.size(18.dp),
contentDescription = "drawable_icons",
tint = Color.Unspecified
)
}
Text(
modifier = Modifier.align(Alignment.Center),
text = buttonText,
color = MaterialTheme.colors.loginButtonTextColor,
textAlign = TextAlign.Center,
fontSize = 16.sp,
fontFamily = FontFamily(
Font(
R.font.roboto_medium
)
)
)
}
}
}
As suggested in other answers you can wrap the content with a Box.
As alternative you can simply use the RowScope of the Button without any container.
Just apply a weight(1f) modifier to the Text and an offset(x=- iconWidth/2).
Something like:
Button(
//....
) {
Icon(
imageVector = imageVector,
modifier = Modifier.size(iconWidth),
contentDescription = "drawable icons",
tint = Color.Unspecified
)
Text(
text = "Button",
color = Color.Black,
textAlign = TextAlign.Center,
modifier = Modifier
.weight(1f)
.offset(x= -iconWidth/2) //default icon width = 24.dp
)
}
If you want to use a Box, remove the contentAlignment = Alignment.Center in the Box and use:
Box(modifier = Modifier.fillMaxWidth()) {
Icon( /* ..... */ )
Text(
modifier = Modifier.fillMaxWidth(),
text = "buttonText",
textAlign = TextAlign.Center
)
}
Box doesn't provide bounds, so for longer texts, it causes overlapping. Row works better for me. Also, you can use Spacer here which is not possible for Box. In my case, I have used spacedBy as a replacement for Spacer:
Row(
modifier = Modifier.fillMaxWidth(),
horizontalArrangement = Arrangement.spacedBy(16.dp),
verticalAlignment = Alignment.CenterVertically
) {
Icon(
painter,
contentDescription = null
)
Box(
modifier = Modifier.weight(1F),
contentAlignment = Alignment.Center
) {
Text(buttonText)
}
}
Box(contentAlignment = Center){
Icon(Modifier.align(CenterStart))
Text()
}

Wrap text to next line using Jetpack Compose

I've created a constraint layout
ConstraintLayout(
Modifier
.fillMaxWidth()
.wrapContentHeight()
) {
Image(
painter = rememberImagePainter(it.photoUrl.toString()),
modifier = Modifier
.constrainAs(photo) {
start.linkTo(parent.start, margin = 30.dp)
top.linkTo(parent.top, margin = 30.dp)
}
.width(130.dp)
)
Column(
modifier = Modifier
.constrainAs(holder) {
start.linkTo(photo.end, margin = 30.dp)
top.linkTo(photo.top)
bottom.linkTo(photo.bottom)
end.linkTo(parent.end, margin = 30.dp)
}
.fillMaxWidth()
.wrapContentHeight(),
horizontalAlignment = Alignment.CenterHorizontally
) {
Text(
modifier = Modifier
.wrapContentWidth()
.wrapContentHeight(),
text = "Lorem Ipsu auto text ator..."
)
}
As you can see long text can not fit in layout. How Can I wrap text to next line? I tried to change wrapContentWidht() to fillMaxParentWidth but id didn't help.
You can use width = Dimension.fillToConstraints to limit the width to the available space.
within the constrainAs block
In your example:
.constrainAs(holder) {
start.linkTo(photo.end, margin = 30.dp)
top.linkTo(photo.top)
bottom.linkTo(photo.bottom)
end.linkTo(parent.end, margin = 30.dp)
width = Dimension.fillToConstraints
}

Create Jetpack Compose Row with 10 circles inside that depends on Row width

I need to do something like this:
It's 10 circles views that have same width that depends on parent width.
That I have now:
Column(
modifier = Modifier
.fillMaxWidth()
.background(color = Color.White)
.padding(vertical = 12.dp)
) {
Row(
modifier = Modifier
.padding(horizontal = 20.dp)
.padding(top = 12.dp)
) {
for (i in 1..10) {
Surface(
shape = CircleShape,
modifier = Modifier
.padding(horizontal = 2.dp)
.width(0.dp)
.height(29.dp)
.weight(1F)
.clip(CircleShape),
color = surfaceColor,
onClick = { selected = i },
) {
Text(
modifier = Modifier
.fillMaxWidth()
.wrapContentSize(Alignment.Center),
text = "$i",
color = textColor,
style = subtitle1(),
overflow = TextOverflow.Ellipsis,
)
}
}
}
}
In this case I can set same width of circles by settings Surface weight by 1F, but I need to set height of this circles that depends on width. I'm stuck how to do this.
You can use the aspectRatio modifier.
Apply to the ratio attribute your expected value.
Surface(
shape = CircleShape,
modifier = Modifier
.padding(horizontal = 2.dp)
.width(0.dp)
.weight(1F)
.aspectRatio(1f)

How to achieve this layout in Jetpack Compose

I'm trying to use the new Jetpack Compose UI framework, but I'm running into an issue. I'd like to achieve this layout, which in xml is pretty easy to achieve:
But I can't figure out how to make the vertical divider take up the available vertical space, without specifying a fixed height. This code that I've tried doesn't seem to work:
#Composable
fun ListItem(item: PlateUI.Plate) {
Surface(
modifier = Modifier.fillMaxWidth(),
shape = RoundedCornerShape(8.dp),
elevation = 2.dp
) {
Row(
modifier = Modifier.fillMaxWidth(),
verticalAlignment = Alignment.CenterVertically
) {
Column(
modifier = Modifier
.padding(8.dp),
horizontalAlignment = Alignment.CenterHorizontally
) {
Text(text = "Code")
Text(text = item.code)
}
Spacer(
modifier = Modifier
.preferredWidth(1.dp)
.background(color = MaterialTheme.colors.onSurface.copy(0.12f))
)
Spacer(modifier = Modifier.weight(1f))
Text(
modifier = Modifier
.padding(horizontal = 8.dp, vertical = 34.dp),
text = item.name
)
Spacer(modifier = Modifier.weight(1f))
}
}
}
I keep getting this result:
I also tried with ConstraintLayout, but it still didn't work
#Composable
fun ListItem(item: PlateUI.Plate) {
Surface(
modifier = Modifier.fillMaxWidth(),
shape = RoundedCornerShape(8.dp),
elevation = 2.dp
) {
ConstraintLayout(
modifier = Modifier.fillMaxWidth(),
) {
val(column, divider, text) = createRefs()
Column(
modifier = Modifier
.padding(8.dp)
.constrainAs(column){
top.linkTo(parent.top)
bottom.linkTo(parent.bottom)
start.linkTo(parent.start)
},
horizontalAlignment = Alignment.CenterHorizontally
) {
Text(text = "Code")
Text(text = item.code)
}
Spacer(
modifier = Modifier
.preferredWidth(1.dp)
.background(color = MaterialTheme.colors.onSurface.copy(0.12f))
.constrainAs(divider){
top.linkTo(parent.top)
bottom.linkTo(parent.bottom)
start.linkTo(column.end)
}
)
Text(
modifier = Modifier
.padding(horizontal = 8.dp, vertical = 34.dp)
.constrainAs(text){
start.linkTo(divider.end)
end.linkTo(parent.end)
top.linkTo(parent.top)
bottom.linkTo(parent.bottom)
},
text = item.name
)
}
}
}
But nothing seems to work. Is this a bug, a missing feature or am I just missing something?
EDIT: Apparently the real problem is that the divider doesn't know how to measure when the Surface doesn't have a fixed height, setting height equal to some number solves the issue, but then the view doesn't adapt to the content height anymore, so this can't be the solution
You can apply:
the modifier .height(IntrinsicSize.Max) to the Row
the modifiers .width(1.dp).fillMaxHeight() to the Spacer
You can read more about the Intrinsic measurements here.
Something like:
Row(
modifier = Modifier.fillMaxWidth().height(IntrinsicSize.Max),
verticalAlignment = Alignment.CenterVertically
) {
Column(
horizontalAlignment = Alignment.CenterHorizontally,
....
) {
Text(text = "....")
}
Spacer(
modifier = Modifier
.width(1.dp)
.fillMaxHeight()
.background(color = MaterialTheme.colors.onSurface.copy(0.12f))
)
Text(...)
}
You can set Intrinsic.Max for the preferredHeight of the Row, then set the Spacer to fill max height. You can read more on Intrinsics in this codelab section.
#Composable
fun ListItem() {
Surface(
modifier = Modifier.fillMaxWidth(),
shape = RoundedCornerShape(8.dp),
elevation = 2.dp
) {
Row(
modifier = Modifier.fillMaxWidth().preferredHeight(IntrinsicSize.Max),
verticalAlignment = Alignment.CenterVertically
) {
Column(
modifier = Modifier
.padding(8.dp),
horizontalAlignment = Alignment.CenterHorizontally
) {
Text(text = "Code")
Text(text = "2456")
}
Spacer(
modifier = Modifier
.preferredWidth(1.dp)
.fillMaxHeight()
.background(color = Color.Black.copy(0.12f))
)
Spacer(modifier = Modifier.weight(1f))
Text(
modifier = Modifier
.padding(horizontal = 8.dp, vertical = 34.dp),
text = "Some name"
)
Spacer(modifier = Modifier.weight(1f))
}
}
}
I've solved it using constraint layout:
Box(modifier = Modifier.padding(Dp(50f))) {
ConstraintLayout(
modifier = Modifier
.border(width = Dp(1f), color = Color.Black)
.fillMaxWidth()
) {
val (left, divider, right) = createRefs()
Column(
modifier = Modifier
.padding(horizontal = Dp(20f))
.constrainAs(left) {
width = Dimension.wrapContent
start.linkTo(parent.start)
top.linkTo(parent.top)
end.linkTo(divider.start)
bottom.linkTo(parent.bottom)
}
) {
Text(text = "Code")
Text(text = "A12")
}
Box(
modifier = Modifier
.width(Dp(1f))
.background(Color.Black)
.constrainAs(divider) {
width = Dimension.wrapContent
height = Dimension.fillToConstraints
start.linkTo(left.end)
top.linkTo(parent.top)
end.linkTo(right.start)
bottom.linkTo(parent.bottom)
}
)
Box(
modifier = Modifier
.constrainAs(right) {
width = Dimension.fillToConstraints
start.linkTo(divider.end)
top.linkTo(parent.top)
end.linkTo(parent.end)
bottom.linkTo(parent.bottom)
}
) {
Text(
text = "Test",
modifier = Modifier
.padding(vertical = Dp(100f))
.align(Alignment.Center)
)
}
}
}
The key part is using that modifier height = Dimension.fillToConstraints
There are plenty of solutions here, but I thought I could demonstrate the ConstraintLayout approach and add a helpful usage of the IntrinsicSize enum that solves one of the issues (needing an adaptive height for the composable). Interestingly, either IntrinsicSize.Max or IntrinsicSize.Min will yield the desired behavior.
I used most of your code. The key differences are:
declares a guideline (my value passed in for the fraction does not produce the exact result you were looking for, but can be adjusted easily (use a fraction slightly smaller than .2) This can be useful if you expect wrapContent to alter your left Text to vary the location of a spacer, but would prefer a consistent spacer location across a list of these items.
others have mentioned, spacer modifier should include .fillMaxHeight()
define the height of the surface wrapper to be .height(IntrinsicSize.Min) docs ref here: https://developer.android.com/jetpack/compose/layout#intrinsic-measurements
divider start is constrained to the guideline
had to change the Spacer modifier to access the width, instead of preferredWidth
#Composable
fun ListItem(item: Plate) {
Surface(
modifier = Modifier.fillMaxWidth().height(IntrinsicSize.Min),
shape = RoundedCornerShape(8.dp),
elevation = 2.dp
) {
ConstraintLayout(
modifier = Modifier.fillMaxWidth(),
) {
val guideline = createGuidelineFromStart(0.2f)
val(column, divider, text) = createRefs()
Column(
modifier = Modifier
.padding(8.dp)
.constrainAs(column){
top.linkTo(parent.top)
bottom.linkTo(parent.bottom)
start.linkTo(parent.start)
end.linkTo(guideline)
},
horizontalAlignment = Alignment.CenterHorizontally
) {
Text(text = "Code")
Text(text = item.code)
}
Spacer(
modifier = Modifier
.constrainAs(divider){
top.linkTo(column.top)
bottom.linkTo(column.bottom)
start.linkTo(guideline)
}
.width(1.dp)
.fillMaxHeight()
.background(color = MaterialTheme.colors.onSurface.copy(0.12f))
)
Text(
modifier = Modifier
.padding(horizontal = 8.dp, vertical = 34.dp)
.constrainAs(text){
start.linkTo(divider.end)
end.linkTo(parent.end)
top.linkTo(parent.top)
bottom.linkTo(parent.bottom)
},
text = item.name
)
}
}
}
I think Row layout is enough.
#Preview(showBackground = true, heightDp = 100)
#Composable
fun ListItem(item: PlateUI.Plate = PlateUI.Plate()) {
Card(
shape = RoundedCornerShape(8.dp)
) {
Row(
modifier = Modifier
.fillMaxSize(),
verticalAlignment = Alignment.CenterVertically
) {
Text(
modifier = Modifier.padding(8.dp),
text = "Code\n${item.code}",
textAlign = TextAlign.Center
)
Box(
Modifier
.fillMaxHeight()
.width(1.dp)
.background(color = MaterialTheme.colors.onSurface.copy(0.12f))
)
Text(
modifier = Modifier
.weight(1f)
.padding(8.dp),
text = item.name,
textAlign = TextAlign.Center
)
}
}
}

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