uniapp中app与webview的通讯代码示例
更新时间:2024年03月16日 11:44:22 作者:姜饼人code
这篇文章主要给大家介绍了关于uniapp中app与webview通讯的相关资料,这里的通信主要是打包APP端和web-view内嵌网页的双向通信,文中通过代码介绍的非常详细,需要的朋友可以参考下
1.app->webview
app发送
此处使用evalJS方法
<template> <web-view src="../../static/chat2.html"></web-view> <button @click="chatRes">生成评估总结</button> </template> <script> methods:{ chatRes() { let str="需要发送的信息" const _funName = 'msgFromUniapp' const _data = { msg: str }; const currentWebview = this.$scope.$getAppWebview().children()[0]; currentWebview.evalJS(`${_funName}(${JSON.stringify(_data)})`); }, } </script>
webview接收
<!DOCTYPE html> <html lang="zh"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>评测记录</title> </head> <body> </body> <script type="text/javascript" src="https://unpkg.com/@dcloudio/uni-webview-js@0.0.3/index.js"></script> <script> let msg='' window.msgFromUniapp = function(arg) { msg=arg.msg console.log(msg); } </script> </html>
2.webview->app
webview发送
<!DOCTYPE html> <html lang="zh"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>评测记录</title> </head> <body> </body> <script type="text/javascript" src="https://unpkg.com/@dcloudio/uni-webview-js@0.0.3/index.js"></script> <script> const sendMsg = () => { let str="待发送的信息" uni.postMessage({ data: { msgContent:str } }) } </script> </html>
app接收
<template> <web-view @message="handlerMessage" src="../../static/chat2.html"></web-view> </template> <script> methods:{ handlerMessage(event) { console.log(event.detail.data[0]) }, } </script>
3.踩坑记录
webview使用uni.postMessage发送消息给app时报uni.postMessage is not a function
解决方案
- 取消引入官方库uni-webview-js
- 改写uni为y_uni,调用y_uni.postMessage
<!DOCTYPE html> <html lang="zh"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>评测记录</title> </head> <body> </body> <script> let y_uni; ! function(e, n) { y_uni = n(); return console.log(4777) console.log(n()) "object" == typeof exports && "undefined" != typeof module ? module.exports = n() : "function" == typeof define && define.amd ? define(n) : (e = e || self).y_uni = n() }(this, (function() { "use strict"; try { var e = {}; Object.defineProperty(e, "passive", { get: function() { !0 } }), window.addEventListener("test-passive", null, e) } catch (e) {} var n = Object.prototype.hasOwnProperty; function i(e, i) { return n.call(e, i) } var t = []; function r() { return window.__dcloud_weex_postMessage || window.__dcloud_weex_ } var o = function(e, n) { var i = { options: { timestamp: +new Date }, name: e, arg: n }; if (r()) { if ("postMessage" === e) { var o = { data: [n] }; return window.__dcloud_weex_postMessage ? window.__dcloud_weex_postMessage(o) : window .__dcloud_weex_.postMessage(JSON.stringify(o)) } var a = { type: "WEB_INVOKE_APPSERVICE", args: { data: i, webviewIds: t } }; window.__dcloud_weex_postMessage ? window.__dcloud_weex_postMessageToService(a) : window .__dcloud_weex_.postMessageToService(JSON.stringify(a)) } if (!window.plus) return window.parent.postMessage({ type: "WEB_INVOKE_APPSERVICE", data: i, pageId: "" }, "*"); if (0 === t.length) { var d = plus.webview.currentWebview(); if (!d) throw new Error("plus.webview.currentWebview() is undefined"); var s = d.parent(), w = ""; w = s ? s.id : d.id, t.push(w) } if (plus.webview.getWebviewById("__uniapp__service")) plus.webview.postMessageToUniNView({ type: "WEB_INVOKE_APPSERVICE", args: { data: i, webviewIds: t } }, "__uniapp__service"); else { var u = JSON.stringify(i); plus.webview.getLaunchWebview().evalJS('UniPlusBridge.subscribeHandler("'.concat( "WEB_INVOKE_APPSERVICE", '",').concat(u, ",").concat(JSON.stringify(t), ");")) } }, a = { navigateTo: function() { var e = arguments.length > 0 && void 0 !== arguments[0] ? arguments[0] : {}, n = e.url; o("navigateTo", { url: encodeURI(n) }) }, navigateBack: function() { var e = arguments.length > 0 && void 0 !== arguments[0] ? arguments[0] : {}, n = e.delta; o("navigateBack", { delta: parseInt(n) || 1 }) }, switchTab: function() { var e = arguments.length > 0 && void 0 !== arguments[0] ? arguments[0] : {}, n = e.url; o("switchTab", { url: encodeURI(n) }) }, reLaunch: function() { var e = arguments.length > 0 && void 0 !== arguments[0] ? arguments[0] : {}, n = e.url; o("reLaunch", { url: encodeURI(n) }) }, redirectTo: function() { var e = arguments.length > 0 && void 0 !== arguments[0] ? arguments[0] : {}, n = e.url; o("redirectTo", { url: encodeURI(n) }) }, getEnv: function(e) { r() ? e({ nvue: !0 }) : window.plus ? e({ plus: !0 }) : e({ h5: !0 }) }, postMessage: function() { var e = arguments.length > 0 && void 0 !== arguments[0] ? arguments[0] : {}; o("postMessage", e.data || {}) } }, d = /uni-app/i.test(navigator.userAgent), s = /Html5Plus/i.test(navigator.userAgent), w = /complete|loaded|interactive/; var u = window.my && navigator.userAgent.indexOf(["t", "n", "e", "i", "l", "C", "y", "a", "p", "i", "l", "A" ].reverse().join("")) > -1; var g = window.swan && window.swan.webView && /swan/i.test(navigator.userAgent); var v = window.qq && window.qq.miniProgram && /QQ/i.test(navigator.userAgent) && /miniProgram/i.test( navigator.userAgent); var c = window.tt && window.tt.miniProgram && /toutiaomicroapp/i.test(navigator.userAgent); var m = window.wx && window.wx.miniProgram && /micromessenger/i.test(navigator.userAgent) && /miniProgram/i .test(navigator.userAgent); var p = window.qa && /quickapp/i.test(navigator.userAgent); var f = window.ks && window.ks.miniProgram && /micromessenger/i.test(navigator.userAgent) && /miniProgram/i .test(navigator.userAgent); var l = window.tt && window.tt.miniProgram && /Lark|Feishu/i.test(navigator.userAgent); var _ = window.jd && window.jd.miniProgram && /micromessenger/i.test(navigator.userAgent) && /miniProgram/i .test(navigator.userAgent); var E = window.xhs && window.xhs.miniProgram && /xhsminiapp/i.test(navigator.userAgent); for (var h, P = function() { window.UniAppJSBridge = !0, document.dispatchEvent(new CustomEvent("UniAppJSBridgeReady", { bubbles: !0, cancelable: !0 })) }, b = [function(e) { if (d || s) return window.__dcloud_weex_postMessage || window.__dcloud_weex_ ? document .addEventListener("DOMContentLoaded", e) : window.plus && w.test(document .readyState) ? setTimeout(e, 0) : document.addEventListener("plusready", e), a }, function(e) { if (m) return window.WeixinJSBridge && window.WeixinJSBridge.invoke ? setTimeout(e, 0) : document.addEventListener("WeixinJSBridgeReady", e), window.wx.miniProgram }, function(e) { if (v) return window.QQJSBridge && window.QQJSBridge.invoke ? setTimeout(e, 0) : document .addEventListener("QQJSBridgeReady", e), window.qq.miniProgram }, function(e) { if (u) { document.addEventListener("DOMContentLoaded", e); var n = window.my; return { navigateTo: n.navigateTo, navigateBack: n.navigateBack, switchTab: n.switchTab, reLaunch: n.reLaunch, redirectTo: n.redirectTo, postMessage: n.postMessage, getEnv: n.getEnv } } }, function(e) { if (g) return document.addEventListener("DOMContentLoaded", e), window.swan.webView }, function(e) { if (c) return document.addEventListener("DOMContentLoaded", e), window.tt.miniProgram }, function(e) { if (p) { window.QaJSBridge && window.QaJSBridge.invoke ? setTimeout(e, 0) : document .addEventListener("QaJSBridgeReady", e); var n = window.qa; return { navigateTo: n.navigateTo, navigateBack: n.navigateBack, switchTab: n.switchTab, reLaunch: n.reLaunch, redirectTo: n.redirectTo, postMessage: n.postMessage, getEnv: n.getEnv } } }, function(e) { if (f) return window.WeixinJSBridge && window.WeixinJSBridge.invoke ? setTimeout(e, 0) : document.addEventListener("WeixinJSBridgeReady", e), window.ks.miniProgram }, function(e) { if (l) return document.addEventListener("DOMContentLoaded", e), window.tt.miniProgram }, function(e) { if (_) return window.JDJSBridgeReady && window.JDJSBridgeReady.invoke ? setTimeout(e, 0) : document.addEventListener("JDJSBridgeReady", e), window.jd.miniProgram }, function(e) { if (E) return window.xhs.miniProgram }, function(e) { return document.addEventListener("DOMContentLoaded", e), a }], y = 0; y < b.length && !(h = b[y](P)); y++); h || (h = {}); var B = "undefined" != typeof y_uni ? y_uni : {}; if (!B.navigateTo) for (var S in h) i(h, S) && (B[S] = h[S]); return B.webView = h, B })); const sendMsg = async () => { let str="待发送的信息" y_uni.postMessage({ data: { msgContent:str } }) } </script> </html>
总结
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