Application Lifecycle
AppLifecycleState, WidgetsBindingObserver, background/foreground, app termination
1Which mixin should be used to observe Flutter app lifecycle state changes?
Which mixin should be used to observe Flutter app lifecycle state changes?
Câu trả lời
WidgetsBindingObserver is Flutter's official mixin for observing app lifecycle state changes. It needs to be added to the State class and the observer registered with WidgetsBinding.instance.addObserver in initState, then removed in dispose.
2Which WidgetsBindingObserver method is called when the app lifecycle state changes?
Which WidgetsBindingObserver method is called when the app lifecycle state changes?
Câu trả lời
The didChangeAppLifecycleState method is called whenever the app lifecycle state changes. It receives an AppLifecycleState parameter indicating the new state of the application (resumed, inactive, paused, detached, hidden).
3Which AppLifecycleState indicates the app is visible and responding to user input?
Which AppLifecycleState indicates the app is visible and responding to user input?
Câu trả lời
The resumed state indicates the app is visible, in the foreground, and responding to user input. This is the normal operating state where the user is actively interacting with the application.
When does AppLifecycleState.inactive occur on iOS?
Which AppLifecycleState indicates the app is no longer visible to the user?
+17 câu hỏi phỏng vấn
Các chủ đề phỏng vấn Flutter khác
Dart Basics
Dart Language Essentials
Flutter Fundamentals
Widget Lifecycle
Local Storage
Layouts & Constraints
ListView & GridView
Navigation & Routing
Basic State Management
Provider Pattern
Networking & HTTP
JSON Serialization
Local Database
Forms & Validation
Animations
Firebase Integration
Unit Testing
Widget Testing
Build & Deployment
Package Management
Memory & Performance
Streams & RxDart
Advanced State Management
Flutter Design Patterns
Performance Optimization
Platform Channels
Custom Painting
Flutter Application Architecture
Nắm vững Flutter cho lần phỏng vấn tiếp theo
Truy cập tất cả câu hỏi, flashcards, bài kiểm tra kỹ thuật, bài tập code review và mô phỏng phỏng vấn.
Bắt đầu miễn phí