uniapp中app与webview的通讯代码示例
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
到此这篇关于uniapp中app与webview通讯的文章就介绍到这了,更多相关uniapp app与webview通讯内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！