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Kotlin Jetpack compose Center text in Column inside a LazyColum

I'am new to jetpack compose and i really liked it. But ran into a problem : I want to create a card and inside of it, i would like to display a list of item with divider between them. I was almost able to achieved it here is my code :
Box(modifier = Modifier.background(Color(0xFFf4f4f4))
.fillMaxSize()
.padding(top = 20.dp)) {
Card(
modifier = Modifier
.fillMaxWidth(),
shape = RoundedCornerShape(20.dp),
elevation = 5.dp
) {
val colorNamesList = listOf("Red", "Green", "Blue", "Indigo")
LazyColumn() {
itemsIndexed(
colorNamesList,
) { index, item ->
Column(
modifier = Modifier
.background(
color = Color(0xFFf2f2f2),
)
.clickable {
println(item)
},
horizontalAlignment = Alignment.CenterHorizontally,//those 2 does nothing
verticalArrangement = Arrangement.Center //when i change it nothing change
) {
println(item + index)
Text(
text = "Item at $item",
modifier = Modifier
.fillMaxWidth()
.height(50.dp),
//textAlign = TextAlign.Center, without it image 1, with it image 2
color = Color.Black,
)
if (index < colorNamesList.lastIndex) {
Divider(
color = Color.Black.copy(alpha = 0.2f),
modifier = Modifier
.padding(horizontal = 80.dp),
)
}
}
}
}
}
}
It's almost good but i didn't managed to align the text inside it, i searched some answer but Alignment and Arrangement doesn't change anything in my situation.
I was able to align horizontally by adding textAlign = TextAlign.Center as i commented in my code but, i couldn't align vertically, the text stay on the top of his cell :
What i want to do is text center in every cell of the column. Thanks for the help.

You can achieve this by adding similar xml attribute like "wrap_content" as height in compose too.
Add "wrapContentHeight()" to modifier and you will get it to align to centre of the page.
Text(
text = "Item at $item",
modifier = Modifier
.fillMaxWidth()
.height(50.dp)
.wrapContentHeight(),
textAlign = TextAlign.Center
color = Color.Black,
)

Jetpack Compose Text and Image get overlapped inside Column layout issue

I am using Jetpack Compose for designing dynamic Layout inside android app. Column layout is used to place elements like Vertical layout. This kind of behaviour is achieved using LinearLayout orientation Vertical usage without compose. Inside Column I have added one Image on top and one text I want to display below it. But after placing the Text inside the Compose Column layout it is getting overlapped. How to resolve this.
The code for adding Image and Text is as follows
#Composable
fun GreetingSectionExperimental(
name: String = "Philipp"
) {
//var text by remember { mutableStateOf(TextFieldValue("")) }
Column(
verticalArrangement = Arrangement.Top,
modifier = Modifier.fillMaxSize()
) {
Image(
painterResource(id = R.drawable.ic_launcher_background),
modifier = Modifier
.fillMaxWidth()
.height(80.dp).offset(0.dp,35.dp),
alignment = Alignment.Center,
contentDescription = ""
)
Text(
text = "Login / Sign Up",
Modifier.padding(10.dp).align(CenterHorizontally),
color = textColor, fontSize = 18.sp,
fontWeight = FontWeight.SemiBold
)
}
}
I am getting output as
How to resolve this ? Inside the current what is missing or Column does not support different kind of elements.

You need to remove the property "Offset" from your image
the code should looks like
#Composable
fun GreetingSectionExperimental(
name: String = "Philipp"
) {
//var text by remember { mutableStateOf(TextFieldValue("")) }
Column(
verticalArrangement = Arrangement.Top,
modifier = Modifier.fillMaxSize()
) {
Image(
painterResource(id = R.drawable.ic_launcher_background),
modifier = Modifier
.fillMaxWidth()
.height(80.dp), //Remove the offset here
alignment = Alignment.Center,
contentDescription = ""
)
Text(
text = "Login / Sign Up",
Modifier.padding(10.dp).align(CenterHorizontally),
color = textColor, fontSize = 18.sp,
fontWeight = FontWeight.SemiBold
)
}
}

Best solution is to use Spacer(modifier = Modifier.height(20.dp)). It will create space between the those Elements this in between this is added.

How to remove RadioButton's padding in Jetpack Compose?

I have a problem with RadioButton component in my Jetpack Compose application. I have some RadioButtons with text and this have a lot of padding by default. Can I remove this padding or to set a custom padding to avoid a lot of space between each?
Currently I have this:
My code is:
Column {
MyEnum.values().filter { rb -> rb.visible }.forEach { rb ->
Row(
Modifier
.fillMaxWidth()
.padding(horizontal = 0.dp, vertical = 0.dp)
.clickable(
interactionSource = interactionSource,
indication = null
) {
TODO()
},
verticalAlignment = Alignment.CenterVertically
) {
RadioButton(
selected = (rb.position == selectedOption),
onClick = {
TODO()
},
colors = RadioButtonDefaults.colors(
selectedColor = DialogOutlinedTextFocus,
unselectedColor = DialogOutlinedTextUnfocus
)
)
Text(
text = stringResource(id = rb.idText),
color = Color.Black,
fontSize = 14.sp,
modifier = Modifier
.padding(horizontal = 3.dp, vertical = 2.dp)
)
}
}
}
I tried with contentPadding, but this property does not exist in RadioButton component.

The source code for RadioButton.kt sets the padding modifier at line 108. With modifiers, order matters. Even if you provide your own padding modifier it will be overridden by line 108.
The sizing values are hardcoded at the bottom of the file.
If you really want to "reduce the padding", apply a size modifier. I use 20.dp because it's equal to radioButtonSize in RadioButton.kt so the button doesn't get clipped. This should work for your purposes since the entire row is clickable.
RadioButton(
modifier = Modifier.size(20.dp),
selected = selected,
onClick = { TODO() },
)
Although, you're probably better off in the long term making custom components you can control. Luckily, the source code is ready available. Just copy, paste and adjust to your needs.

You could specify the Row height in the Row.Modifier
like this:
Row(
Modifier
.fillMaxWidth()
//HERE YOU GO
.height(30.dp)
.padding(horizontal = 0.dp, vertical = 0.dp)

Always display placeholder and RTL input in TextField with Jetpack Compose

I want the placeholder not to disappear if I start typing in a field and it should be on the left side of the screen.
But the text input and cursor must be on the right.
An example is in the screenshot. Thanks!

Not the best solution, but it works.
Customizing the placeholder as per the requirement is not possible at this point in time. You have to create a completely customized TextField if that is an absolute requirement.
Note.
This is not a placeholder.
The positioning of the text is absolute, it should be adjusted according to the TextField size.
#Composable
fun FixedPlaceholder() {
var name by remember { mutableStateOf("") }
Box {
OutlinedTextField(
shape = MaterialTheme.shapes.medium,
value = name,
onValueChange = {
name = it
},
singleLine = true,
textStyle = LocalTextStyle.current.copy(
textAlign = TextAlign.End,
),
modifier = Modifier
.fillMaxWidth()
.padding(
horizontal = 16.dp,
vertical = 8.dp,
),
)
Text(
text = "to",
modifier = Modifier
.fillMaxWidth()
.padding(
start = 32.dp,
end = 32.dp,
top = 24.dp,
bottom = 8.dp
),
)
}
}

You don't need the placeholder, just set the leadingIcon property to:
leadingIcon={Text(text="To")}
In Compose, leadingIcon is a composable, and you can set it to anything you like.

Modifier .weight() not setted automatically in column and can't add

i am new to jetpack compose and also have some experience with flutter so when move to compose its a little bit similar to flutter declarative UI style but i don't quite understand
like in flutter when i want some widget to expanded and want it to take full available space we can use Exapanded widget and if i use this in Column its automatically add flex of 1 or weight in terms of jetpack compose so i want to do same thing in jetpack compose but its seems like jetpack column not automatically and weight to its children and also i cant add
Modifier.weight(1f) in Card of NetworkCardComposable so i have to pass Modifier from as Parameter and in when using this Compoasable in columns this Modifier.weight(1f) have to set through parameter which is odd i think.
#Preview(showBackground = true, widthDp = 500, heightDp = 200)
#Composable
fun NetworkCardComposable(modifier: Modifier = Modifier) {
Card(
modifier = modifier
.fillMaxSize(1f)
.padding(16.dp),
shape = RoundedCornerShape(16.dp),
backgroundColor = colorResource(id = R.color.jazz_color_primary)
) {
Row {
Card(
modifier = Modifier
.weight(2f)
.fillMaxSize()
.padding(8.dp),
shape = RoundedCornerShape(16.dp),
) {
Image(
modifier = Modifier
.padding(8.dp),
painter = painterResource(R.drawable.jazz_logo),
contentDescription = null,
)
}
Row(
modifier = Modifier
.weight(2f)
.fillMaxSize(),
verticalAlignment = Alignment.CenterVertically,
) {
Text(
modifier = Modifier
.weight(1f)
.fillMaxWidth(),
text = "Bundles & Offers",
color = Color.White,
textAlign = TextAlign.Center,
fontSize = MaterialTheme.typography.h5.fontSize,
)
Icon(
modifier = Modifier.size(56.dp),
imageVector = Icons.Default.ChevronRight,
tint = Color.White,
contentDescription = null,
)
}
}
}
}
#Preview(showBackground = true, showSystemUi = true)
#Composable
fun networkCard() {
Column(Modifier.fillMaxSize()) {
NetworkCardComposable(Modifier.weight(1f))
NetworkCardComposable(Modifier.weight(1f))
NetworkCardComposable(Modifier.weight(1f))
NetworkCardComposable(Modifier.weight(1f))
}
}
all thought i have acheive my desired layout but if there is any better approach to this please answer

Jetpack Compose aims at providing the maximum control over the UI. Hence, by default, the elements of a container like column default to wrap content. If you want them to occupy Max available space of the container, the proper way to do it is using Modifier.fillMaxSize()
As far as weights are concerned, if you do not specify then explicitly while adding more than one elements inside a container, the weights are calculated accordingly, based on the minimum required dimensions, (i.e., again, wrapContentSize ())