Develop Reference

How to create multiline text area in jetpack compose

I want to create the following textfield. But there are no samples on the internet for the same, neither in material documentation

#Composable
fun Textarea() {
val text = rememberSaveable { mutableStateOf("") }
TextField(
value = text.value,
onValueChange = { text.value = it }, modifier = Modifier
.fillMaxWidth()
.height(100.dp)
.padding(10.dp)
.border(width = 1.dp, color = Color.Black, shape = RoundedCornerShape(8.dp))
)
}
You can change the size and customize it as you want as per your requirement.

Border radius is not changing based on shape when user click on it jetpack compose

Hey guys I am using RoundedCornerShape(4.dp) to my Surface which looks fine. When I tried to click on the item it not showing me 4dp corner in Surface. I tried this stack overflow 1 and stack overflow 2 but nothing works.
binding.itemComposable.setContent {
Column(modifier = Modifier.fillMaxSize(), verticalArrangement = Arrangement.spacedBy(12.dp)) {
val options = getOptions()
options.forEachIndexed { _, optionText ->
val interactionSource = remember { MutableInteractionSource() }
val isPressed by interactionSource.collectIsPressedAsState()
val backgroundColor = if (isPressed) DuckEggBlue else OffWhite
val textColor = if (isPressed) TealBlue else Slate
val borderWidth = if (isPressed) 1.dp else 0.dp
val borderColor = if (isPressed) Aqua else OffWhite
val clickable = Modifier.clickable(
interactionSource = interactionSource,
indication = rememberRipple(true)
) {
println("Item Click")
}
Surface(
modifier = Modifier
.then(clickable)
.border(borderWidth, borderColor),
shape = RoundedCornerShape(4.dp)
) {
Text(
modifier = Modifier
.fillMaxWidth()
.background(backgroundColor)
.padding(16.dp),
text = optionText,
style = Typography.h3,
fontWeight = FontWeight.Medium,
color = textColor
)
}
}
}
}
Without click on item corner is 4 dp
When I click it's not changing corner

If you want to handle the click on a Surface you have to use the function that accepts an onClick():
Surface(
onClick = {},
shape = RoundedCornerShape(4.dp),
border = BorderStroke(borderWidth,borderColor),
interactionSource = interactionSource
)

Create a variable for shape
val shape = RoundedCornerShape(4.dp)
Use it in Modifier.clip() and Modifier.border() like this,
Surface(
modifier = Modifier
.clip(shape)
.border(
width = borderWidth,
color = borderColor,
shape = shape,
)
.then(clickable),
// shape = shape,
)
shape in border() specifies the shape of the border which by default is RectangleShape. Hence, you are seeing the rectangle border.
shape in clip() changes the shape of the composable before the click action is added. This is to make the ripple effect appear only on the given shape.
Note: Order of modifiers are important.
The shape in the Surface may not be needed after these changes.

If youre using Surface to wrapping the content, try to add a container inside the content for example Box or Column. Then use your Surface only as a shape mask, the background and other content will be flexible as you want.
This is the example
Surface(
modifier = Modifier
.then(clickable)
.border(borderWidth, borderColor),
shape = RoundedCornerShape(4.dp)
) {
Box(modifier = Modifier
.fillMaxWidth()
.fillMaxHeight()
.background(Color.Green)){
Text(
modifier = Modifier
.fillMaxWidth()
.padding(16.dp),
text = optionText,
style = Typography.h3,
fontWeight = FontWeight.Medium,
color = textColor
)
}
}

How to set/disable the OutlinedTextField focus?

What I want:
I want my OutlinedTextField to be always focused or disable the ability to focus.
I want the OutlinedTextField to be RoundedCornerShape but when I use background it goes out of the shape.
My Code:
Column(modifier = Modifier
.weight(1f)
.background(Color.Gray)
.clip(RoundedCornerShape(35.dp))
) {
OutlinedTextField(
value = "12",
onValueChange = {},
readOnly = true,
shape = RoundedCornerShape(35.dp),
textStyle = LocalTextStyle.current.copy(textAlign = TextAlign.End),
leadingIcon = { Icon(painter = painterResource(id = R.drawable.ic_coin), contentDescription = null)},
modifier = Modifier
)
}

Using enabled = false the text field will be neither editable nor focusable, the input of the text field will not be selectable, visually text field will appear in the disabled UI state readOnly.
To change the background color use the attribute backgroundColor in the TextFieldDefaults.outlinedTextFieldColors parameter:
OutlinedTextField(
value = "12",
onValueChange = {},
enabled = false,
shape = RoundedCornerShape(35.dp),
textStyle = LocalTextStyle.current.copy(textAlign = TextAlign.End),
colors = TextFieldDefaults.outlinedTextFieldColors(
backgroundColor = Color.Gray,
disabledTextColor= LocalContentColor.current.copy(LocalContentAlpha.current),
)
)
If you want to wrap the component in a Column change the order of the modifiers:
Column(modifier = Modifier
.clip(RoundedCornerShape(35.dp))
.background(Color.Gray)
){
//....
}
If you want to change the border width you have to use the version 1.2.x and the OutlinedTextFieldDecorationBox specifying the border attribute:
BasicTextField(
//....
) {
OutlinedTextFieldDecorationBox(
border = {
TextFieldDefaults.BorderBox(
//...
unfocusedBorderThickness = 4.dp,
focusedBorderThickness = 4.dp
)
}
)
}

How to get OutlinedTextField with gradient boarder in Jetpack Compose?

I'm trying to get an OutlinedTextField with gradient border like this one:
But I can add only a single color to the outline,
OutlinedTextField(
value = email,
onValueChange = {email = it},
label = { Text(text = "Email Address") },
modifier = Modifier
.fillMaxWidth(.8f)
.padding(4.dp),
colors = TextFieldDefaults.outlinedTextFieldColors(unfocusedBorderColor = Color.Green)
)
If I add a border with modifier then the gradient is applied to the border, not to the outline:
Modifier.border(width = 1.dp, brush = gradient, shape = RoundedCornerShape(12.dp))
How can I add gradient color to the outline?

so far that i know OutlinedTextField does't support gradient border. But if really want to use gradient border in text field you can try BasicTextField
var name by remember {
mutableStateOf("")
}
BasicTextField(
value = name,
onValueChange = { name = it },
cursorBrush = Brush.horizontalGradient(listOf(Color.Red, Color.Green)),
modifier = Modifier
.fillMaxWidth(),
decorationBox = { innerTextField ->
Row(
modifier = Modifier
.fillMaxWidth()
.border(
brush = Brush.horizontalGradient(listOf(Color.Green, Color.Blue)),
width = 1.dp,
shape = CircleShape
)
.padding(16.dp)
) {
Icon(Icons.Default.Email, contentDescription = "")
Spacer(modifier = Modifier.padding(3.dp))
innerTextField()
}
}
)
and this is the final result
you can learn more about basic text field by looking the sample
[BasicTextField Samples][2]

Align Textfield label to start of underbar using Jetpack Compose

By default the label of Textfield is not aligned with the start position of underbar. There seems to be some empty space before the label text.
This is how my Textfields look like:
I want the label of my textfield to be aligned to the start position of underbar. How do I achieve this?

With 1.0.0 (tested with 1.0.0-beta07) the TextField follows the Material guidelines and there isn't a built-in parameter to change this behaviour.
You should use a BasicTextField with some specific styling.
Otherwise you can use the drawBehind modifier:
val interactionSource = remember { MutableInteractionSource() }
val isFocused by interactionSource.collectIsFocusedAsState()
val IndicatorUnfocusedWidth = 1.dp
val IndicatorFocusedWidth = 2.dp
val TextFieldPadding = 16.dp
val indicatorColor = if (isFocused) Color.Red else Color.Gray
val indicatorWidth = if (isFocused) IndicatorFocusedWidth else IndicatorUnfocusedWidth
TextField(
value = text,
onValueChange = {
text = it },
label={Text("Label")},
interactionSource = interactionSource,
modifier = Modifier
.drawBehind {
val strokeWidth = indicatorWidth.value * density
val y = size.height - strokeWidth / 2
drawLine(
indicatorColor,
Offset(TextFieldPadding.toPx(), y),
Offset(size.width - TextFieldPadding.toPx(), y),
strokeWidth
)
},
colors = TextFieldDefaults.textFieldColors(
backgroundColor = Color.Transparent,
focusedIndicatorColor = Transparent,
unfocusedIndicatorColor = Transparent,
disabledIndicatorColor = Transparent
)
)