init

lib/utils/storage.dart

@@ -0,0 +1,69 @@
+import 'dart:convert';
+import 'package:shared_preferences/shared_preferences.dart';
+
+// 本地存储
+class StorageUtil {
+  static final StorageUtil _singleton = StorageUtil._internal();
+  late SharedPreferences _prefs;
+
+  factory StorageUtil() => _singleton;
+
+  StorageUtil._internal();
+
+  Future init() async {
+    _prefs = await SharedPreferences.getInstance();
+  }
+
+  Future<bool> putJSON(String key, dynamic jsonVal) {
+    String jsonString = jsonEncode(jsonVal);
+    return _prefs.setString(key, jsonString);
+  }
+
+  dynamic getJSON(String key) {
+    String? jsonString = _prefs.getString(key);
+    return jsonString == null ? null : jsonDecode(jsonString);
+  }
+
+  String getString(String key, {String defValue = ''}) {
+    if (!_prefs.containsKey(key)) return defValue;
+    return _prefs.getString(key) ?? defValue;
+  }
+
+  Future<bool>? putString(String key, String value) {
+    return _prefs.setString(key, value);
+  }
+
+  bool getBool(String key, {bool defValue = false}) {
+    if (!_prefs.containsKey(key)) return defValue;
+    return _prefs.getBool(key) ?? defValue;
+  }
+
+  Future<bool>? putBool(String key, bool value) {
+    return _prefs.setBool(key, value);
+  }
+
+  int getInt(String key, {int defValue = 0}) {
+    if (!_prefs.containsKey(key)) return defValue;
+    return _prefs.getInt(key) ?? defValue;
+  }
+
+  Future<bool>? putInt(String key, int value) {
+    return _prefs.setInt(key, value);
+  }
+
+  bool? haveKey(String key) {
+    return getKeys().contains(key);
+  }
+
+  Set<String> getKeys() {
+    return _prefs.getKeys();
+  }
+
+  Future<bool>? remove(String key) {
+    return _prefs.remove(key);
+  }
+
+  Future<bool>? clear() {
+    return _prefs.clear();
+  }
+}