first commit

untitled/lib/utils/SharedPreferences.dart

@@ -0,0 +1,55 @@
+import 'package:flutter/material.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+/*
+ * shared_preferences 配置
+ */
+class SPreferences {
+
+  static final SPreferences _instance = SPreferences._();
+  factory SPreferences() => _instance;
+  SPreferences._();
+  static SharedPreferences _prefs;
+
+
+  static Future<void> init() async {
+    if (_prefs == null) {
+      _prefs = await SharedPreferences.getInstance();
+    }
+  }
+
+  // 设置数字类型
+  Future<bool> setInt(String key, int value) async {
+    return await _prefs.setInt(key, value);
+  }
+
+  // 设置bool
+  Future<bool> setBool(String key, bool value) async {
+    return await _prefs.setBool(key, value);
+  }
+
+  // 设置String
+  Future<bool> setString(String key, String value) async {
+    return await _prefs.setString(key, value);
+  }
+
+  String getString(String key) {
+    return _prefs.getString(key);
+  }
+
+  bool getIsLogin() {
+    if (_prefs.containsKey("isLogin")) {
+      return _prefs.getBool("isLogin");
+    }
+    return false;
+  }
+
+  bool getBool(String key) {
+    if (!(_prefs.containsKey(key))) {
+      _prefs.setBool(key, true);
+      return false;
+    }
+    return _prefs.getBool(key);
+  }
+
+}