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在android开发中,存在Android的原生Native层与JS网页混合开发的需求,此时可以使用WebViewJavascriptBridge框架进行桥接,实现JS与Native层相互通信。
下面对WebViewJavascriptBridge框架的实现流程做简单解释:
- var wx = {
- invoke: function(funcName, params, callBack) {
- console.log('invoke: funcName=' + funcName + ", params=" + params + ", callBack=" + callBack);
- var finalParams = {'funcName': funcName, 'orgparams': params};
- window.WebViewJavascriptBridge.callHandler('submitFromWeb', finalParams, callBack);
- },
- };
- //WebViewJavascriptBridge流程解释
- //注册接口注释
- //注册接口之后,当js层点击启动VPN时,
- //1. js层:通知Native层有消息排队: 触发 BridgeWebViewClient.shouldOverrideUrlLoading(): url为 yy://__QUEUE_MESSAGE__/
- //2. Native层:接收到通知(yy://__QUEUE_MESSAGE__/),通过 loadUrl("javascript:WebViewJavascriptBridge._fetchQueue();"), 想js层获取数据。
- //3. js层: 组装js层需要发送的数据,再次触发 BridgeWebViewClient.shouldOverrideUrlLoading(),数据在url中,解析如下:
- //eg: yy://return/_fetchQueue/[{"handlerName":"submitFromWeb","data":{"funcName":"ext_hulk_Start","orgparams":{"data":{"vpn_host":"xx.xx.xx.xx","vpn_port":"443","auth_server":"本地认证","auth_username":"zh","auth_password":"zh@1234","toast_enabled":"true"}}},"callbackId":"cb_10_1715422494134"}]
- // yy://return/_fetchQueue/ 为js层native层发送数据的协议;
- //data字段如下:
- /*
- [
- {
- "handlerName": "submitFromWeb",
- "data": {
- "funcName": "ext_hulk_Start",
- "orgparams": {
- "data": {
- "vpn_host": "xx.xx.xx.xxx",
- "vpn_port": "443",
- "auth_server": "本地认证",
- "username": "zh",
- "password": "zh@1234",
- "toast_enabled": "true"
- }
- }
- },
- "callbackId": "cb_10_1715422494134"
- }
- ]
- */
- //4. Native层的回调接口中处理data数据: 解析其中的 "handlerName","data","callbackId",
- //注册 response的回调接口 responseFunction(CallBackFunction对象)传给业务层代码.
- //5. APP层处理业务,处理完成之后,回调 responseFunction 回调接口的对象
- //6. responseFunction 中新建一个Message对象,设置ResponseId为callbackId,设置ResponseData响应数据
- //7 通过loadUrl接口加载url: "javascript:WebViewJavascriptBridge._handleMessageFromNative('%s');", %s为Message.toJson()数据:
- /*
- {
- "responseData": "{\"vpn_errcode\":\"2560\",\"vpn_reason_code\":\"0x0FFFFFFF\",\"vpn_connected\":\"false\",\"vpn_state\":\"0\",\"vpn_errmsg\":\"网络故障\",\"err_msg\":\"ext_hulk_Start:ok\"}",
- "responseId": "cb_11_1715423091997"
- }
- */
- //8. test.html页面接收到Native层返回的数据,处理js层业务
先描述流程,后续化流程书序图
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