React Native WebView onMessage doesn`t work












0














My companent



import React, {Component} from 'react';
import {WebView} from 'react-native';

class Html extends Component {

constructor(props){
super(props);
this.webView = null;
}

onMessage( event ) {
console.log( "On Message", event.nativeEvent.data );
}

sendPostMessage(msg) {
console.log( "Sending post message",msg );
this.webView.postMessage(JSON.stringify(msg));
}

runJSInBackground (code) {
this.webView.injectJavaScript(code)
}


render() {
return (
<WebView
originWhitelist={['*']}
ref={( webView ) => this.webView = webView}
onMessage={this.onMessage}
onError={(e)=>console.log("WebView error: "+e)}
source={{
baseUrl:"include/",
html: `
<html>
<head>
</head>
<body>
<script>
document.addEventListener("message",function(event) {
console.log("Received post message", event); //Work!!!
}, false);

setTimeout(()=>window.postMessage("WhatsAppMANNN!!!"),5000) //doesn`t work ((
</script>
</body>
</html>
` }}
/>
)
}

}

export default Html;


Everything works fine when I send a WebView request, but there is no answer to the return. That is, the window.postMessage method does not work, and the error does not light either. What's the catch, not how I can not find the answer to this question.










share|improve this question






















  • Try with webView.postMessage("WhatsAppMANNN!!!"),5000)
    – Anurag Chutani
    Nov 21 '18 at 7:02










  • Does not help, tried and wait for the bridge function waitForBridge() { if (window.postMessage.length !== 1) setTimeout(waitForBridge, 200); else window.postMessage('abcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc'); } window.onload = waitForBridge;
    – Владимир Аристархов
    Nov 21 '18 at 7:23


















0














My companent



import React, {Component} from 'react';
import {WebView} from 'react-native';

class Html extends Component {

constructor(props){
super(props);
this.webView = null;
}

onMessage( event ) {
console.log( "On Message", event.nativeEvent.data );
}

sendPostMessage(msg) {
console.log( "Sending post message",msg );
this.webView.postMessage(JSON.stringify(msg));
}

runJSInBackground (code) {
this.webView.injectJavaScript(code)
}


render() {
return (
<WebView
originWhitelist={['*']}
ref={( webView ) => this.webView = webView}
onMessage={this.onMessage}
onError={(e)=>console.log("WebView error: "+e)}
source={{
baseUrl:"include/",
html: `
<html>
<head>
</head>
<body>
<script>
document.addEventListener("message",function(event) {
console.log("Received post message", event); //Work!!!
}, false);

setTimeout(()=>window.postMessage("WhatsAppMANNN!!!"),5000) //doesn`t work ((
</script>
</body>
</html>
` }}
/>
)
}

}

export default Html;


Everything works fine when I send a WebView request, but there is no answer to the return. That is, the window.postMessage method does not work, and the error does not light either. What's the catch, not how I can not find the answer to this question.










share|improve this question






















  • Try with webView.postMessage("WhatsAppMANNN!!!"),5000)
    – Anurag Chutani
    Nov 21 '18 at 7:02










  • Does not help, tried and wait for the bridge function waitForBridge() { if (window.postMessage.length !== 1) setTimeout(waitForBridge, 200); else window.postMessage('abcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc'); } window.onload = waitForBridge;
    – Владимир Аристархов
    Nov 21 '18 at 7:23
















0












0








0







My companent



import React, {Component} from 'react';
import {WebView} from 'react-native';

class Html extends Component {

constructor(props){
super(props);
this.webView = null;
}

onMessage( event ) {
console.log( "On Message", event.nativeEvent.data );
}

sendPostMessage(msg) {
console.log( "Sending post message",msg );
this.webView.postMessage(JSON.stringify(msg));
}

runJSInBackground (code) {
this.webView.injectJavaScript(code)
}


render() {
return (
<WebView
originWhitelist={['*']}
ref={( webView ) => this.webView = webView}
onMessage={this.onMessage}
onError={(e)=>console.log("WebView error: "+e)}
source={{
baseUrl:"include/",
html: `
<html>
<head>
</head>
<body>
<script>
document.addEventListener("message",function(event) {
console.log("Received post message", event); //Work!!!
}, false);

setTimeout(()=>window.postMessage("WhatsAppMANNN!!!"),5000) //doesn`t work ((
</script>
</body>
</html>
` }}
/>
)
}

}

export default Html;


Everything works fine when I send a WebView request, but there is no answer to the return. That is, the window.postMessage method does not work, and the error does not light either. What's the catch, not how I can not find the answer to this question.










share|improve this question













My companent



import React, {Component} from 'react';
import {WebView} from 'react-native';

class Html extends Component {

constructor(props){
super(props);
this.webView = null;
}

onMessage( event ) {
console.log( "On Message", event.nativeEvent.data );
}

sendPostMessage(msg) {
console.log( "Sending post message",msg );
this.webView.postMessage(JSON.stringify(msg));
}

runJSInBackground (code) {
this.webView.injectJavaScript(code)
}


render() {
return (
<WebView
originWhitelist={['*']}
ref={( webView ) => this.webView = webView}
onMessage={this.onMessage}
onError={(e)=>console.log("WebView error: "+e)}
source={{
baseUrl:"include/",
html: `
<html>
<head>
</head>
<body>
<script>
document.addEventListener("message",function(event) {
console.log("Received post message", event); //Work!!!
}, false);

setTimeout(()=>window.postMessage("WhatsAppMANNN!!!"),5000) //doesn`t work ((
</script>
</body>
</html>
` }}
/>
)
}

}

export default Html;


Everything works fine when I send a WebView request, but there is no answer to the return. That is, the window.postMessage method does not work, and the error does not light either. What's the catch, not how I can not find the answer to this question.







react-native






share|improve this question













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share|improve this question




share|improve this question










asked Nov 21 '18 at 6:52









Владимир АристарховВладимир Аристархов

288




288












  • Try with webView.postMessage("WhatsAppMANNN!!!"),5000)
    – Anurag Chutani
    Nov 21 '18 at 7:02










  • Does not help, tried and wait for the bridge function waitForBridge() { if (window.postMessage.length !== 1) setTimeout(waitForBridge, 200); else window.postMessage('abcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc'); } window.onload = waitForBridge;
    – Владимир Аристархов
    Nov 21 '18 at 7:23




















  • Try with webView.postMessage("WhatsAppMANNN!!!"),5000)
    – Anurag Chutani
    Nov 21 '18 at 7:02










  • Does not help, tried and wait for the bridge function waitForBridge() { if (window.postMessage.length !== 1) setTimeout(waitForBridge, 200); else window.postMessage('abcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc'); } window.onload = waitForBridge;
    – Владимир Аристархов
    Nov 21 '18 at 7:23


















Try with webView.postMessage("WhatsAppMANNN!!!"),5000)
– Anurag Chutani
Nov 21 '18 at 7:02




Try with webView.postMessage("WhatsAppMANNN!!!"),5000)
– Anurag Chutani
Nov 21 '18 at 7:02












Does not help, tried and wait for the bridge function waitForBridge() { if (window.postMessage.length !== 1) setTimeout(waitForBridge, 200); else window.postMessage('abcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc'); } window.onload = waitForBridge;
– Владимир Аристархов
Nov 21 '18 at 7:23






Does not help, tried and wait for the bridge function waitForBridge() { if (window.postMessage.length !== 1) setTimeout(waitForBridge, 200); else window.postMessage('abcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc'); } window.onload = waitForBridge;
– Владимир Аристархов
Nov 21 '18 at 7:23














1 Answer
1






active

oldest

votes


















0














Try using:



window.postMessage("Lulz", "*") 


Source: https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage






share|improve this answer























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    1 Answer
    1






    active

    oldest

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    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    0














    Try using:



    window.postMessage("Lulz", "*") 


    Source: https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage






    share|improve this answer




























      0














      Try using:



      window.postMessage("Lulz", "*") 


      Source: https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage






      share|improve this answer


























        0












        0








        0






        Try using:



        window.postMessage("Lulz", "*") 


        Source: https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage






        share|improve this answer














        Try using:



        window.postMessage("Lulz", "*") 


        Source: https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage







        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Dec 29 '18 at 17:32









        סטנלי גרונן

        1,58272044




        1,58272044










        answered Dec 29 '18 at 17:04









        ValdaXDValdaXD

        1537




        1537






























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