增加版本信息获取工具类.

可以在项目代码中直接使用 import um = require('UpdateManager') 然后调用相关接口.

packages/update-manager/lib/UpdateManager.js

@@ -0,0 +1,129 @@
+/**
+ * 方便直接获取当前版本号等信息.
+ * 使用方式:
+ *    // @ts-ignore
+ *    import UpdateManager = require( "UpdateManager");
+ *    然后在代码中直接使用即可.
+ */
+class UpdateManager {
+
+    cur_ver_code = 0;
+    cur_ver_name = "1.0.1";
+    cur_ver_desc = "";
+    ver_type = "dev";
+
+    new_ver_code = 0;
+    new_ver_name = "1.0.1";
+    new_ver_desc = "";
+    new_ver_info = {};
+
+    // 记录当前版本的bundles. 如果有新版本, 则自动下载新bundles.
+    cur_bundles = {};
+
+    updateSuccess = "0";
+
+    constructor() {
+        const curVer = window.localStorage.getItem("cur_ver_info");
+        if (curVer) {
+            const verInfo = JSON.parse(curVer);
+            this.new_ver_code = this.cur_ver_code = verInfo.versionCode;
+            this.new_ver_name = this.cur_ver_name = verInfo.versionName;
+            this.ver_type = verInfo.versionType;
+            this.new_ver_desc = this.cur_ver_desc = verInfo.versionLog;
+            this.new_ver_info = verInfo;
+            this.cur_bundles = verInfo.bundleVers;
+        }
+
+        this.updateSuccess = window.localStorage.getItem("ver_updated") || 0;
+        this.fetchNewVerInfo();
+    }
+
+    // 此方法适用于非强制更新包. 需要设计信息界面,显示版本信息.
+    // 手动调用进行更新下载, 下载完成返回true, 此时需要重启游戏才能应用更新. 需要界面提示用户.
+    doUpdate() {
+        if (this.hasNewVersion()) {
+            window.localStorage.setItem('cur_ver_info', JSON.stringify(this.new_ver_info));
+            return true;
+        }
+        return false;
+    }
+
+    resetUpdateFlag() {
+        window.localStorage.setItem('ver_updated', '0');
+    }
+
+    getUpdateFlag() {
+        return this.updateSuccess == 1;
+    }
+
+    // 检测是否有新版本.
+    hasNewVersion() {
+        return this.new_ver_info && this.new_ver_info.versionCode && this.new_ver_info.versionCode != this.cur_ver_code;
+    }
+
+    fetchNewVerInfo() {
+        let url = window.updateUrl || false;
+        if (!url) {
+            return;
+        }
+        // 游戏启动后再请求更新,避免影响启动速度.
+        url += `?_t=${Math.random()}`;
+        cc.log("请求更新地址:", url);
+        this._get(url).then(version => {
+            if (!version) {
+                console.log("未检测到更新版本内容");
+                return;
+            }
+            if (version) {
+                cc.log('当前版本号:', this.cur_ver_code, this.cur_ver_name);
+                cc.log('请求更新内容:', version);
+                let verInfo = version;
+                if (typeof version === 'string') {
+                    verInfo = JSON.parse(version);
+                }
+                this.new_ver_code = verInfo.versionCode;
+                this.new_ver_name = verInfo.versionName;
+                this.new_ver_desc = verInfo.versionLog;
+
+                this.new_ver_info = verInfo;
+
+                // 如果首次运行,本地未缓存版本信息,则进行缓存.
+                if (!this.cur_ver_code) {
+                    cc.log("当前首次运行,记录版本信息");
+                    window.localStorage.setItem('cur_ver_info', JSON.stringify(this.new_ver_info));
+
+                    this.new_ver_code = this.cur_ver_code = verInfo.versionCode;
+                    this.new_ver_name = this.cur_ver_name = verInfo.versionName;
+                    this.ver_type = verInfo.versionType;
+                    this.new_ver_desc = this.cur_ver_desc = verInfo.versionLog;
+
+                } else if (this.hasNewVersion() && verInfo.forceUpdate) {
+                    window.localStorage.setItem('cur_ver_info', JSON.stringify(this.new_ver_info));
+                    window.localStorage.setItem('ver_updated', '1');
+                    cc.log("有新版本,且默认强制更新");
+                }
+            }
+        });
+    }
+
+    // ajax 请求.
+    _get(url) {
+        return new Promise(resolve => {
+            const ajax = new XMLHttpRequest();
+            ajax.open("get", url, true);
+            ajax.setRequestHeader("Content-Type", "application/json;charset=utf-8");
+            ajax.onreadystatechange = function () {
+                if (ajax.readyState == 4) {
+                    if (ajax.status == 200) {
+                        resolve(ajax.responseText);
+                    } else {
+                        resolve(null);
+                    }
+                }
+            }
+            ajax.send(null);
+        });
+    }
+}
+
+module.exports = new UpdateManager();

packages/update-manager/lib/UpdateManager.js.meta

@@ -0,0 +1,9 @@
+{
+  "ver": "1.0.8",
+  "uuid": "aa7483f4-ac0c-4809-9c5e-4e5734a26db6",
+  "isPlugin": false,
+  "loadPluginInWeb": true,
+  "loadPluginInNative": true,
+  "loadPluginInEditor": false,
+  "subMetas": {}
+}