---

name: ui description: XML layouts, ConstraintLayout, Jetpack Compose, Material Design 3. version: "2.0.0" sasmp_version: "1.3.0"

Agent Binding

bonded_agent: 03-ui-development bond_type: PRIMARY_BOND

Skill Configuration

atomic: true single_responsibility: UI design & implementation

Parameter Validation

parameters: paradigm: type: string enum: [xml, compose, both] default: compose design_system: type: string enum: [material2, material3] default: material3

Retry Configuration

retry: max_attempts: 2 backoff: exponential on_failure: return_basic_layout

Observability

logging: level: info include: [query, ui_type, accessibility_check]

UI Design Skill

Quick Start

ConstraintLayout

Copy<androidx.constraintlayout.widget.ConstraintLayout>
    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

Jetpack Compose

CopyColumn(modifier = Modifier.fillMaxSize().padding(16.dp)) {
    Text("Hello Compose", fontSize = 20.sp)
    Button(onClick = { }) { Text("Click Me") }
}

Material Design 3

CopyScaffold(
    topBar = { TopAppBar(title = { Text("MyApp") }) }
) { padding ->
    // Content
}

Key Concepts

Constraint Types

• Start/End, Top/Bottom
• Chains (spread, packed)
• Guidelines
• Barriers
• Bias

Compose State

Copyvar count by remember { mutableStateOf(0) }
Button(onClick = { count++ }) { Text("Count: $count") }

Material Components

• Buttons (filled, outlined, text)
• Cards, FABs, Dialogs
• Navigation patterns
• Theme system

Best Practices

✅ Use ConstraintLayout for efficiency ✅ Implement Material Design ✅ Test on multiple screen sizes ✅ Optimize rendering performance ✅ Support accessibility

Resources

• ConstraintLayout Guide
• Compose Documentation
• Material Design 3