flutter_lifecycle_state 1.0.0

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flutter_lifecycle_state #

Make State support lifecycle method just like Android's Activity#onCreate、 Activity#onResume、Activity#onPause、Activity#onDestroy.

Getting Started #

1、register observer to app's navigatorObservers。 #

Code as below:

return MaterialApp(
  title: 'Flutter Demo',

  // Register the RouteObserver as a navigation observer.
  navigatorObservers: [routeObserver],

2、How to use the StateWithLifecycle: #

Replace the State of each page-level StatefulWidget with our StateWithLifecycle.

Then we can choose to override onCreate, onPause, onResume, onDestroy method, within these methods can perform the corresponding business logic.

If you need to customize the current page log id, as shown in the following: give tagInStateWithLifecycle field assignment.

class TestRoute extends StatefulWidget {
  State<StatefulWidget> createState() => _TestRouteState();

class _TestRouteState extends StateWithLifecycle<TestRoute> {

  void initState() {
    // You need to set the tag id before the super. InitState () method
    tagInStateWithLifecycle = "_TestRouteState";
  void onCreate() {
    // todo 
  void onResume() {
    // todo
  void onPause() {
    // todo
  void onDestroy() {
    // todo

3、Attention: #

①The lifecycle method calls for the widgets on the Flutter side are all made by the host app side. The flutter terminal will no longer receive any messages after the application is abruptly closed.

②When the root page on the Flutter side closes properly, the State#dispose method is not raised, so our onDestroy method is not raised, so if you want to free the resource, you'll have to do it yourself.

4、The demo address #



[0.0.1] 20190412. #

  • define StateWithLifecycle.

[0.0.2] 20190415. #

  • 修复StateWithLifecycle子类获取到的widget指向错误的问题。
  • 修改state_with_lifecycle_tagtagInStateWithLifecycle

[0.0.3] 20190415. #

  • 修复v0.0.2的bug。

[1.0.0] 20190509 #

  • Fixed an issue where the onPause method call on the parent page was incorrect on multiple entry into a child page.

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  flutter_lifecycle_state: ^1.0.0

2. Install it

You can install packages from the command line:

with Flutter:

$ flutter pub get

Alternatively, your editor might support flutter pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:flutter_lifecycle_state/flutter_lifecycle_state.dart';
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Learn more about scoring.

We analyzed this package on Feb 27, 2020, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.7.1
  • pana: 0.13.5
  • Flutter: 1.12.13+hotfix.8

Health issues and suggestions

Fix lib/flutter_lifecycle_state.dart. (-43.75 points)

Analysis of lib/flutter_lifecycle_state.dart failed with 2 errors:

line 80 col 12: Case expressions must be constant.

line 80 col 30: The getter 'suspending' isn't defined for the class 'AppLifecycleState'.

Maintenance suggestions

Maintain an example. (-10 points)

Create a short demo in the example/ directory to show how to use this package.

Common filename patterns include main.dart, example.dart, and flutter_lifecycle_state.dart. Packages with multiple examples should provide example/README.md.

For more information see the pub package layout conventions.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.1.0 <3.0.0
flutter 0.0.0
Transitive dependencies
collection 1.14.11 1.14.12
meta 1.1.8
sky_engine 0.0.99
typed_data 1.1.6
vector_math 2.0.8
Dev dependencies