ionic
Ionic development guidelines for building cross-platform mobile applications with Angular, Cordova, and Firebase integration.
What this skill does
# Ionic Development
You are an expert in Ionic for building cross-platform mobile applications.
## Core Principles
- Write concise, technical responses with accurate Ionic examples
- Use feature-based organization for scalable applications
- Leverage Ionic's built-in components for consistent UI
- Follow Angular best practices for Ionic Angular projects
## Project Structure
### Feature-Based Organization
```
src/
├── app/
│ ├── features/
│ │ ├── auth/
│ │ ├── home/
│ │ └── settings/
│ ├── shared/
│ │ ├── components/
│ │ ├── services/
│ │ └── pipes/
│ └── core/
│ ├── guards/
│ └── interceptors/
├── assets/
└── theme/
```
## Ionic Components
### Navigation
```typescript
import { NavController } from '@ionic/angular';
constructor(private navCtrl: NavController) {}
navigateForward() {
this.navCtrl.navigateForward('/details');
}
navigateBack() {
this.navCtrl.back();
}
```
### UI Components
- Use `ion-header`, `ion-content`, `ion-footer` for page structure
- Leverage `ion-list`, `ion-item` for lists
- Use `ion-button`, `ion-fab` for actions
- Apply `ion-modal`, `ion-popover` for overlays
## Styling
- Use SCSS for component-specific styles
- Leverage Ionic CSS variables for theming
- Apply platform-specific styling when needed
- Use responsive utilities for different screen sizes
```scss
:host {
--ion-background-color: var(--ion-color-light);
}
.custom-card {
--background: var(--ion-color-primary-tint);
}
```
## Performance
### Lazy Loading
- Implement lazy loading for feature modules
- Use `loadChildren` in routing configuration
- Split code into logical chunks
### Optimization
- Use virtual scrolling for long lists
- Implement proper image loading strategies
- Minimize bundle size with tree shaking
## Native Integration
### Cordova/Capacitor Plugins
- Use Ionic Native wrappers for native functionality
- Implement web fallbacks for native features
- Handle platform differences appropriately
```typescript
import { Camera } from '@ionic-native/camera/ngx';
async takePicture() {
const image = await this.camera.getPicture(options);
return image;
}
```
## Firebase Integration
- Use AngularFire for Firebase services
- Implement proper Firestore transactions
- Handle real-time updates efficiently
- Use batch operations for multiple writes
## Environment Configuration
- Configure environments for development, staging, production
- Use environment files for API endpoints
- Manage secrets securely
## Testing
- Write unit tests for services and components
- Use Ionic testing utilities
- Test native plugin mocks appropriately
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