Jetpack Compose: Wie entferne ich die EditText/TextField-Unterstreichung und behalte den Cursor bei?

Hallo, ich muss die Unterstreichung in meinem TextField entfernen, weil es hässlich aussieht, wenn das TextField kreisförmig ist. Ich habe die aktive Farbe auf transparent gesetzt, aber dann wird der Cursor nicht angezeigt (weil er transparent ist). Wie kann ich die Unterstreichung/aktive Farbe entfernen und den Cursor behalten?

Hier ist mein Circular TextField-Code:

@Composable
fun SearchBar(value: String) {
    // we are creating a variable for
    // getting a value of our text field.
    val inputvalue = remember { mutableStateOf(TextFieldValue()) }

    TextField(
            // below line is used to get
            // value of text field,
            value = inputvalue.value,

            // below line is used to get value in text field
            // on value change in text field.
            onValueChange = { inputvalue.value = it },

            // below line is used to add placeholder
            // for our text field.
            placeholder = { Text(text = "Firmanavn") },

            // modifier is use to add padding
            // to our text field, and a circular border
            modifier = Modifier.padding(all = 16.dp).fillMaxWidth().border(1.dp, Color.LightGray, CircleShape),

            shape = CircleShape,


            // keyboard options is used to modify
            // the keyboard for text field.
            keyboardOptions = KeyboardOptions(
                    // below line is use for capitalization
                    // inside our text field.
                    capitalization = KeyboardCapitalization.None,

                    // below line is to enable auto
                    // correct in our keyboard.
                    autoCorrect = true,

                    // below line is used to specify our
                    // type of keyboard such as text, number, phone.
                    keyboardType = KeyboardType.Text,
            ),

            // below line is use to specify
            // styling for our text field value.
            textStyle = TextStyle(color = Color.Black,
                    // below line is used to add font
                    // size for our text field
                    fontSize = TextUnit.Companion.Sp(value = 15),

                    // below line is use to change font family.
                    fontFamily = FontFamily.SansSerif),

            // below line is use to give
            // max lines for our text field.
            maxLines = 1,

            // active color is use to change
            // color when text field is focused.
            activeColor = Color.Gray,

            // single line boolean is use to avoid
            // textfield entering in multiple lines.
            singleLine = true,

            // inactive color is use to change
            // color when text field is not focused.
            inactiveColor = Color.Transparent,

            backgroundColor = colorResource(id = R.color.white_light),

                    // trailing icons is use to add
                    // icon to the end of tet field.
            trailingIcon = {
                Icon(Icons.Filled.Search, tint = colorResource(id = R.color.purple_700))
            },
    )

Sie können diese Attribute definieren, um eine transparente Farbe anzuwenden:

• focusedIndicatorColor
• unfocusedIndicatorColor
• disabledIndicatorColor

Etwas wie:

   TextField(
       //..
       colors = TextFieldDefaults.textFieldColors(
            textColor = Color.Gray,
            disabledTextColor = Color.Transparent,
            backgroundColor = Color.White,
            focusedIndicatorColor = Color.Transparent,
            unfocusedIndicatorColor = Color.Transparent,
            disabledIndicatorColor = Color.Transparent
        )
    )

Beginnen mit 1.2.0 Sie können auch das Neue verwenden OutlinedTextFieldDecorationBox zusammen mit BasicTextField Anpassen des Randes oder der Anzeigelinie.

    val interactionSource = remember { MutableInteractionSource() }
    val enabled = true
    val singleLine = true
    val colors = TextFieldDefaults.outlinedTextFieldColors()

    BasicTextField(
        value = value,
        onValueChange = onValueChange,
        modifier = modifier,
        // internal implementation of the BasicTextField will dispatch focus events
        interactionSource = interactionSource,
        enabled = enabled,
        singleLine = singleLine
    ) {
        TextFieldDefaults.OutlinedTextFieldDecorationBox(
            value = value,
            visualTransformation = VisualTransformation.None,
            innerTextField = it,
            // same interaction source as the one passed to BasicTextField to read focus state
            // for text field styling
            interactionSource = interactionSource,
            enabled = enabled,
            singleLine = singleLine,
            // update border thickness and shape
            border = {
                TextFieldDefaults.BorderBox(
                    enabled = enabled,
                    isError = false,
                    colors = colors,
                    interactionSource = interactionSource,
                    shape = CircleShape,
                    unfocusedBorderThickness = 1.dp,
                    focusedBorderThickness = 1.dp
                )
            }
        )
    }

Sie können auch a verwenden TextFieldDecorationBox Anwenden der indicatorLine Modifikator, der die angibt focusedIndicatorLineThickness Und unfocusedIndicatorLineThickness Werte:

   val colors = TextFieldDefaults.textFieldColors(
        backgroundColor = White,
        focusedIndicatorColor = Gray)

    BasicTextField(
        modifier = Modifier
            .border(1.dp, Color.LightGray, CircleShape)
            .indicatorLine(
                enabled = enabled,
                isError = false,
                colors = colors,
                interactionSource = interactionSource,
                focusedIndicatorLineThickness = 0.dp,
                unfocusedIndicatorLineThickness = 0.dp
            )
            .background(colors.backgroundColor(enabled).value, CircleShape),
    ) {
        TextFieldDecorationBox(
            //...
            colors = colors
        )
    }

Wenn Sie keine TextField-Parameter/-Funktionen wie Reduzieren von Beschriftungen, Platzhaltern usw. benötigen, können Sie eine Text-/BasicTextField-Ebene verwenden, um ein SearchField zu erstellen (was gemäß Problem FilledTextField: Der untere Indikator kann nicht entfernt werden ):

@Composable
fun Search(
        hint: String,
        endIcon: ImageVector? = Icons.Default.Cancel,
        onValueChanged: (String) -> Unit,
) {
    var textValue by remember { mutableStateOf(TextFieldValue()) }

    Surface(
        shape = RoundedCornerShape(50),
        color = searchFieldColor
    ) {
        Box(
            modifier = Modifier
                .preferredHeight(40.dp)
                .padding(start = 16.dp, end = 12.dp),
            contentAlignment = Alignment.CenterStart
        )
        {
            if (textValue.text.isEmpty()) {
                Text(
                    text = "Search...",
                    style = MaterialTheme.typography.body1.copy(color = MaterialTheme.colors.onSurface.copy(ContentAlpha.medium)),
                    )
            }

            Row(
                verticalAlignment = Alignment.CenterVertically
            ) {
                BasicTextField(
                    modifier = Modifier.weight(1f),
                    value = textValue,
                    onValueChange = { textValue = it; onValueChanged(textValue.text) },
                    singleLine = true,
                    cursorColor = YourColor,
                )
                endIcon?.let {
                    AnimatedVisibility(
                        visible = textValue.text.isNotEmpty(),
                        enter = fadeIn(),
                        exit = fadeOut()
                    ) {
                        Image(
                            modifier = Modifier
                                .preferredSize(24.dp)
                                .clickable(
                                    onClick = { textValue = TextFieldValue() },
                                    indication = null
                                ),
                            imageVector = endIcon,
                            colorFilter = iconColor
                        )
                    }
                }
            }
        }
    }
}