wanNingTaiQiu/client/laya/src/utils/LocalStorageManager.ts

/**
 * 本地存储管理类
 */
export class LocalStorageManager {

    private test1(): void {
        // 存储数据
        LocalStorageManager.setItem("playerName", "Tom");
        LocalStorageManager.setItem("playerLevel", 5);
        LocalStorageManager.setItem("playerData", { score: 100, level: 3 });
        // 获取数据
        const name = LocalStorageManager.getItem<string>("playerName");
        const level = LocalStorageManager.getItem<number>("playerLevel");
        const data = LocalStorageManager.getItem<{ score: number, level: number }>("playerData");

        console.log(name);  // 输出: Tom
        console.log(level); // 输出: 5
        console.log(data);  // 输出: { score: 100, level: 3 }

        // 删除某项
        LocalStorageManager.removeItem("playerLevel");

        // 清空全部
        // LocalStorageManager.clear();

        // 判断是否存在
        if (LocalStorageManager.hasKey("playerName")) {
            console.log("playerName 存在");
        }
    }


    /**
     * 存储数据到本地
     * @param key 键名
     * @param value 值（会自动序列化为 JSON）
     */
    public static setItem(key: string, value: any): void {
        Laya.LocalStorage.setItem(key, JSON.stringify(value));
    }

    /**
     * 获取本地存储的数据
     * @param key 键名
     * @returns 解析后的对象或原始字符串，不存在返回 null
     */
    public static getItem<T = any>(key: string): T | null {
        const data = Laya.LocalStorage.getItem(key);
        if (data === null) return null;
        try {
            return JSON.parse(data) as T;
        } catch (e) {
            // 如果不是 JSON 格式，直接返回原始字符串
            return data as any;
        }
    }

    /**
     * 删除指定键的本地数据
     * @param key 键名
     */
    public static removeItem(key: string): void {
        Laya.LocalStorage.removeItem(key);
    }

    /**
     * 清空所有本地存储数据
     */
    public static clear(): void {
        Laya.LocalStorage.clear();
    }

    /**
         * 获取所有存储的键名
         * @returns 键名数组
         */
    public static getKeys(): string[] {
        const rawStorage = Laya.LocalStorage as any;
        const length = Laya.LocalStorage.length;
        const keys: string[] = [];
        for (let i = 0; i < length; i++) {
            const key = rawStorage.key ? rawStorage.key(i) : null;
            if (key) {
                keys.push(key);
            }
        }
        return keys;
    }

    /**
     * 检查是否存在某个键
     * @param key 键名
     * @returns 是否存在
     */
    public static hasKey(key: string): boolean {
        const keys = this.getKeys();
        return keys.indexOf(key) !== -1;
    }







}