shared_preferences_hhz

Description:

shared preferences hhz

Shared preferences plugin #

Wraps platform-specific persistent storage for simple data
(NSUserDefaults on iOS and macOS, SharedPreferences on Android, etc.). Data may be persisted to disk asynchronously,
and there is no guarantee that writes will be persisted to disk after
returning, so this plugin must not be used for storing critical data.
Usage #
To use this plugin, add shared_preferences as a dependency in your pubspec.yaml file.
Example #
import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';

void main() {
runApp(MaterialApp(
home: Scaffold(
body: Center(
child: RaisedButton(
onPressed: _incrementCounter,
child: Text('Increment Counter'),
),
),
),
));
}

_incrementCounter() async {
SharedPreferences prefs = await SharedPreferences.getInstance();
int counter = (prefs.getInt('counter') ?? 0) + 1;
print('Pressed $counter times.');
await prefs.setInt('counter', counter);
}
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Testing #
You can populate SharedPreferences with initial values in your tests by running this code:
SharedPreferences.setMockInitialValues (Map<String, dynamic> values);
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