uniapp webview实现双向通信

需求：uniapp webview嵌套一个h5 实现双向通信

uniapp 代码

<template>
	<view>
		<web-view src="http://192.168.3.150:9003/" @message="onMessage"></web-view>
	</view>
</template>

<script>
	export default {
		data(){
			return{
				currentWebview:null
			}
		},
		mounted() {
			const self = this;
			self.currentWebview = self.$scope.$getAppWebview().children()[0]
			let info = {name:'hello'}
			self.currentWebview.evalJS(`uniEvent(${JSON.stringify(info)})`);
			setInterval(() => {
					self.currentWebview.evalJS(`uniEvent(${JSON.stringify(info)})`);
			},1000)
		},

		methods: {
			onMessage(e) {
				console.log('来自页面的消息', e.detail.data);
				uni.showToast({
					title: e.detail.data, 
					icon: 'none'
				});
			}
		}
	}
</script>

h5 页面代码

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8" />
    <title>测试</title>
    <script type="text/javascript" src="https://js.cdn.aliyun.dcloud.net.cn/dev/uni-app/uni.webview.1.5.2.js"></script>
</head>
<body onload="addUniEvenPassthrough()">
    <div class="margin-top:200px;"></div>
    <button onclick="sendMessage()">Send message to uniapp</button>
    <button onclick="sendMessage()">Send message to uniapp</button>
    <button onclick="sendMessage()">Send message to uniapp</button>
    <button onclick="sendMessage()">Send message to uniapp</button>
    <button onclick="sendMessage()">Send message to uniapp</button>
    <button onclick="sendMessage()">Send message to uniapp</button>
    <button onclick="sendMessage()">Send message to uniapp</button>
    <script>
    function sendMessage() {
        uni.postMessage({
            data: 'Hello from web page!'
        });
    }
    function addUniEvenPassthrough() {
        window.uniEvent = function(info) {
            console.log('webview通信', JSON.stringify(info));
        }
    }
    </script>
</body>
</html>

效果

ps: 如果你webview嵌套的h5 是uniapp打包出来的那么uni.postMessage 方法调用不成功的话，成得改成 uni.webView.postMessage

在这里插入图片描述文章来源地址https://uudwc.com/A/MxRAw

这样就成功了