猜数字配置存储

lib/guess/guess_page.dart

@@ -2,6 +2,7 @@ import 'dart:math';
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:flutter_first_station/storage/sp_storage.dart';
 import 'guess_app_bar.dart';
 import 'result_notice.dart';
 
@@ -23,11 +24,21 @@ class _GuessPageState extends State<GuessPage> with SingleTickerProviderStateMix
       vsync: this,
       duration: const Duration(milliseconds: 200),
     );
+    _initConfig();
+  }
+
+  void _initConfig() async{
+    Map<String,dynamic> config = await SpStorage.instance.readGuessConfig();
+    _guessing = config['guessing']??false;
+    _value = config['value']??0;
+    setState(() {
+
+    });
   }
 
   int _value = 0;
 
-  Random _random = Random();
+  final Random _random = Random();
   bool _guessing = false;
   bool? _isBig;
 
@@ -43,6 +54,7 @@ class _GuessPageState extends State<GuessPage> with SingleTickerProviderStateMix
     setState(() {
       _guessing = true;
       _value = _random.nextInt(100);
+      SpStorage.instance.saveGuessConfig(guessing: _guessing,value: _value);
       print(_value);
     });
   }
@@ -60,6 +72,7 @@ class _GuessPageState extends State<GuessPage> with SingleTickerProviderStateMix
       setState(() {
         _isBig = null;
         _guessing = false;
+        SpStorage.instance.saveGuessConfig(guessing: _guessing,value: _value);
       });
       return;
     }
@@ -116,5 +129,8 @@ class _GuessPageState extends State<GuessPage> with SingleTickerProviderStateMix
   }
 
   @override
+  // TODO: implement wantKeepAlive
   bool get wantKeepAlive => true;
+
+
 }

lib/storage/sp_storage.dart

@@ -0,0 +1,39 @@
+import 'dart:convert';
+
+import 'package:shared_preferences/shared_preferences.dart';
+
+const String kGuessSpKey = 'guess-config';
+
+class SpStorage {
+  SpStorage._();
+
+  static SpStorage? _storage;
+
+  static SpStorage get instance {
+    _storage = _storage ?? SpStorage._();
+    return _storage!;
+  }
+
+  SharedPreferences? _sp;
+
+  Future<void> initSpWhenNull() async {
+    if (_sp != null) return;
+    _sp = _sp ?? await SharedPreferences.getInstance();
+  }
+
+  Future<bool> saveGuessConfig({
+    bool? guessing,
+    int? value,
+  }) async {
+    await initSpWhenNull();
+    String content = json.encode({'guessing': guessing, 'value': value});
+    return _sp!.setString(kGuessSpKey, content);
+  }
+
+  Future<Map<String,dynamic>> readGuessConfig() async {
+    await initSpWhenNull();
+    String content = _sp!.getString(kGuessSpKey)??"{}";
+    return json.decode(content);
+  }
+
+}

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -7,8 +7,10 @@ import Foundation
 
 import audioplayers_darwin
 import path_provider_foundation
+import shared_preferences_foundation
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   AudioplayersDarwinPlugin.register(with: registry.registrar(forPlugin: "AudioplayersDarwinPlugin"))
   PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
+  SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
 }

pubspec.lock

@@ -328,6 +328,62 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "4.2.4"
+  shared_preferences:
+    dependency: "direct main"
+    description:
+      name: shared_preferences
+      sha256: "16d3fb6b3692ad244a695c0183fca18cf81fd4b821664394a781de42386bf022"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.1"
+  shared_preferences_android:
+    dependency: transitive
+    description:
+      name: shared_preferences_android
+      sha256: "6478c6bbbecfe9aced34c483171e90d7c078f5883558b30ec3163cf18402c749"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.4"
+  shared_preferences_foundation:
+    dependency: transitive
+    description:
+      name: shared_preferences_foundation
+      sha256: e014107bb79d6d3297196f4f2d0db54b5d1f85b8ea8ff63b8e8b391a02700feb
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.2.2"
+  shared_preferences_linux:
+    dependency: transitive
+    description:
+      name: shared_preferences_linux
+      sha256: "9d387433ca65717bbf1be88f4d5bb18f10508917a8fa2fb02e0fd0d7479a9afa"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.2.0"
+  shared_preferences_platform_interface:
+    dependency: transitive
+    description:
+      name: shared_preferences_platform_interface
+      sha256: fb5cf25c0235df2d0640ac1b1174f6466bd311f621574997ac59018a6664548d
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.2.0"
+  shared_preferences_web:
+    dependency: transitive
+    description:
+      name: shared_preferences_web
+      sha256: "74083203a8eae241e0de4a0d597dbedab3b8fef5563f33cf3c12d7e93c655ca5"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.0"
+  shared_preferences_windows:
+    dependency: transitive
+    description:
+      name: shared_preferences_windows
+      sha256: "5e588e2efef56916a3b229c3bfe81e6a525665a454519ca51dbcc4236a274173"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.2.0"
   sky_engine:
     dependency: transitive
     description: flutter

pubspec.yaml

@@ -33,6 +33,7 @@ dependencies:
   flame_audio: ^2.0.2
   uuid: ^3.0.7
   intl: ^0.18.1
+  shared_preferences: ^2.1.1
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^1.0.2