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| 1 | +import Foundation |
| 2 | + |
| 3 | +class PlistManagerUtils { |
| 4 | + |
| 5 | + // 单例实例 |
| 6 | + static let shared = PlistManager(plistName: "userSettings") |
| 7 | + |
| 8 | + private var plistFileURL: URL |
| 9 | + private var preferences: [String: Any] |
| 10 | + private var cachedChanges: [String: Any] = [:] |
| 11 | + private var isDirty = false |
| 12 | + |
| 13 | + // 初始化 PlistManager，指定 plist 文件名 |
| 14 | + private init(plistName: String) { |
| 15 | + // 获取沙盒中的 Preferences 目录路径 |
| 16 | + let preferencesDirectory = FileManager.default.urls(for: .libraryDirectory, in: .userDomainMask).first! |
| 17 | + self.plistFileURL = preferencesDirectory.appendingPathComponent("Preferences/\(plistName).plist") |
| 18 | + |
| 19 | + // 如果 plist 文件不存在，则创建一个空的文件 |
| 20 | + if !FileManager.default.fileExists(atPath: plistFileURL.path) { |
| 21 | + preferences = [:] |
| 22 | + save() |
| 23 | + } else { |
| 24 | + preferences = loadPreferences() |
| 25 | + } |
| 26 | + } |
| 27 | + |
| 28 | + // 加载 plist 文件中的数据 |
| 29 | + private func loadPreferences() -> [String: Any] { |
| 30 | + guard let data = try? Data(contentsOf: plistFileURL), |
| 31 | + let preferences = try? PropertyListSerialization.propertyList(from: data, options: [], format: nil) as? [String: Any] else { |
| 32 | + return [:] |
| 33 | + } |
| 34 | + return preferences |
| 35 | + } |
| 36 | + |
| 37 | + // 保存数据到 plist 文件 |
| 38 | + private func save() { |
| 39 | + do { |
| 40 | + let data = try PropertyListSerialization.data(fromPropertyList: preferences, format: .xml, options: 0) |
| 41 | + try data.write(to: plistFileURL) |
| 42 | + } catch { |
| 43 | + print("Error saving preferences to plist: \(error.localizedDescription)") |
| 44 | + } |
| 45 | + } |
| 46 | + |
| 47 | + // 获取指定 key 对应的 Int 值 |
| 48 | + func getInt(forKey key: String, defaultValue: Int) -> Int { |
| 49 | + return preferences[key] as? Int ?? defaultValue |
| 50 | + } |
| 51 | + |
| 52 | + // 获取指定 key 对应的 Bool 值 |
| 53 | + func getBool(forKey key: String, defaultValue: Bool) -> Bool { |
| 54 | + return preferences[key] as? Bool ?? defaultValue |
| 55 | + } |
| 56 | + |
| 57 | + // 获取指定 key 对应的 String 值 |
| 58 | + func getString(forKey key: String, defaultValue: String) -> String { |
| 59 | + return preferences[key] as? String ?? defaultValue |
| 60 | + } |
| 61 | + |
| 62 | + // 获取指定 key 对应的 Float 值 |
| 63 | + func getFloat(forKey key: String, defaultValue: Float) -> Float { |
| 64 | + return preferences[key] as? Float ?? defaultValue |
| 65 | + } |
| 66 | + |
| 67 | + // 获取指定 key 对应的 Double 值 |
| 68 | + func getDouble(forKey key: String, defaultValue: Double) -> Double { |
| 69 | + return preferences[key] as? Double ?? defaultValue |
| 70 | + } |
| 71 | + |
| 72 | + // 获取指定 key 对应的 Data 值 |
| 73 | + func getData(forKey key: String, defaultValue: Data) -> Data { |
| 74 | + return preferences[key] as? Data ?? defaultValue |
| 75 | + } |
| 76 | + |
| 77 | + // 获取指定 key 对应的 URL 值 |
| 78 | + func getURL(forKey key: String, defaultValue: URL) -> URL { |
| 79 | + return preferences[key] as? URL ?? defaultValue |
| 80 | + } |
| 81 | + |
| 82 | + // 获取指定 key 对应的 Array 值 |
| 83 | + func getArray(forKey key: String, defaultValue: [Any]) -> [Any] { |
| 84 | + return preferences[key] as? [Any] ?? defaultValue |
| 85 | + } |
| 86 | + |
| 87 | + // 获取指定 key 对应的 Dictionary 值 |
| 88 | + func getDictionary(forKey key: String, defaultValue: [String: Any]) -> [String: Any] { |
| 89 | + return preferences[key] as? [String: Any] ?? defaultValue |
| 90 | + } |
| 91 | + |
| 92 | + // 设置 Int 值 |
| 93 | + func setInt(key: String, value: Int) { |
| 94 | + cachedChanges[key] = value |
| 95 | + isDirty = true |
| 96 | + } |
| 97 | + |
| 98 | + // 设置 Bool 值 |
| 99 | + func setBool(key: String, value: Bool) { |
| 100 | + cachedChanges[key] = value |
| 101 | + isDirty = true |
| 102 | + } |
| 103 | + |
| 104 | + // 设置 String 值 |
| 105 | + func setString(key: String, value: String) { |
| 106 | + cachedChanges[key] = value |
| 107 | + isDirty = true |
| 108 | + } |
| 109 | + |
| 110 | + // 设置 Float 值 |
| 111 | + func setFloat(key: String, value: Float) { |
| 112 | + cachedChanges[key] = value |
| 113 | + isDirty = true |
| 114 | + } |
| 115 | + |
| 116 | + // 设置 Double 值 |
| 117 | + func setDouble(key: String, value: Double) { |
| 118 | + cachedChanges[key] = value |
| 119 | + isDirty = true |
| 120 | + } |
| 121 | + |
| 122 | + // 设置 Data 值 |
| 123 | + func setData(key: String, value: Data) { |
| 124 | + cachedChanges[key] = value |
| 125 | + isDirty = true |
| 126 | + } |
| 127 | + |
| 128 | + // 设置 URL 值 |
| 129 | + func setURL(key: String, value: URL) { |
| 130 | + cachedChanges[key] = value |
| 131 | + isDirty = true |
| 132 | + } |
| 133 | + |
| 134 | + // 设置 Array 值 |
| 135 | + func setArray(key: String, value: [Any]) { |
| 136 | + cachedChanges[key] = value |
| 137 | + isDirty = true |
| 138 | + } |
| 139 | + |
| 140 | + // 设置 Dictionary 值 |
| 141 | + func setDictionary(key: String, value: [String: Any]) { |
| 142 | + cachedChanges[key] = value |
| 143 | + isDirty = true |
| 144 | + } |
| 145 | + |
| 146 | + // 删除指定 key 的数据 |
| 147 | + func remove(forKey key: String) { |
| 148 | + cachedChanges[key] = nil |
| 149 | + isDirty = true |
| 150 | + } |
| 151 | + |
| 152 | + // 清除 plist 文件（删除整个文件） |
| 153 | + func clear() { |
| 154 | + do { |
| 155 | + try FileManager.default.removeItem(at: plistFileURL) |
| 156 | + preferences = [:] |
| 157 | + } catch { |
| 158 | + print("Error clearing plist file: \(error.localizedDescription)") |
| 159 | + } |
| 160 | + } |
| 161 | + |
| 162 | + // 将更改保存到 plist |
| 163 | + func apply() { |
| 164 | + // 只有在有修改的情况下才进行保存 |
| 165 | + if isDirty { |
| 166 | + // 将所有更改合并到 preferences 中，覆盖掉已存在的相同键 |
| 167 | + for (key, value) in cachedChanges { |
| 168 | + preferences[key] = value |
| 169 | + } |
| 170 | + |
| 171 | + // 执行保存操作 |
| 172 | + save() |
| 173 | + |
| 174 | + // 重置缓存和脏标记 |
| 175 | + cachedChanges.removeAll() |
| 176 | + isDirty = false |
| 177 | + } |
| 178 | + } |
| 179 | +} |
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