Android Mobile Design

Master Material Design 3 (Material You) and Jetpack Compose to build modern, adaptive Android applications that integrate seamlessly with the Android ecosystem.

When to Use This Skill

• Designing Android app interfaces following Material Design 3
• Building Jetpack Compose UI and layouts
• Implementing Android navigation patterns (Navigation Compose)
• Creating adaptive layouts for phones, tablets, and foldables
• Using Material 3 theming with dynamic colors
• Building accessible Android interfaces
• Implementing Android-specific gestures and interactions
• Designing for different screen configurations

Core Concepts

1. Material Design 3 Principles

Personalization: Dynamic color adapts UI to user's wallpaper Accessibility: Tonal palettes ensure sufficient color contrast Large Screens: Responsive layouts for tablets and foldables

Material Components:

• Cards, Buttons, FABs, Chips
• Navigation (rail, drawer, bottom nav)
• Text fields, Dialogs, Sheets
• Lists, Menus, Progress indicators

2. Jetpack Compose Layout System

Column and Row:

// Vertical arrangement with alignment
Column(
    modifier = Modifier.padding(16.dp),
    verticalArrangement = Arrangement.spacedBy(12.dp),
    horizontalAlignment = Alignment.Start
) {
    Text(
        text = "Title",
        style = MaterialTheme.typography.headlineSmall
    )
    Text(
        text = "Subtitle",
        style = MaterialTheme.typography.bodyMedium,
        color = MaterialTheme.colorScheme.onSurfaceVariant
    )
}

// Horizontal arrangement with weight
Row(
    modifier = Modifier.fillMaxWidth(),
    horizontalArrangement = Arrangement.SpaceBetween,
    verticalAlignment = Alignment.CenterVertically
) {
    Icon(Icons.Default.Star, contentDescription = null)
    Text("Featured")
    Spacer(modifier = Modifier.weight(1f))
    TextButton(onClick = {}) {
        Text("View All")
    }
}

Lazy Lists and Grids:

// Lazy column ...