Inputsiconvalidation

Handle availability

Username field with an @ prefix and an inline check confirming availability.

Available

Installation

caveui components are copy-paste Jetpack Compose built entirely on Material 3 — there's no caveui dependency to add. Make sure Material 3 is on your classpath (it ships with the Compose BOM), then copy the Usage snippet below into your project.

kotlin

// build.gradle.kts (module)
dependencies {
    implementation(platform("androidx.compose:compose-bom:2025.06.00"))
    implementation("androidx.compose.material3:material3")
}

Usage

kotlin

var handle by remember { mutableStateOf("") }
val available = handle.length >= 3
OutlinedTextField(
    value = handle,
    onValueChange = { handle = it.lowercase() },
    prefix = { Text("@") },
    trailingIcon = {
        if (available) Icon(
            Icons.Filled.CheckCircle,
            contentDescription = "Available",
            tint = Color(0xFF16A34A),
        )
    },
    placeholder = { Text("handle") },
    supportingText = {
        Text(if (available) "Available" else "At least 3 characters")
    },
    singleLine = true,
)