反应本机版本:0.60
使用的库:react-native-webview(版本:9.0.1)
问题:
当我将 postMessage ( this.webView.postMessage('somedata')
) 从我的 react-native 事件处理程序发送到 webview 时,不会触发 onMessage。但是 onMessage 确实会在 webview 发送的事件上触发。
尝试的解决方案:
添加了 document.eventListener 和 window.eventListener。当我从 react-native 发布消息时,仍然不会触发 onMessage。
任何帮助将不胜感激。
代码:
// On Click, the following function will run
_sendPostMessage = () => {
//data sent to webview
this.webView.postMessage("getAuthToken");
}
// Inside render() function
<WebView
ref={(webView) => this.webView = webView}
style={styles.webView}
source={{ uri: event.ticket_form_url, headers: headers }}
injectedJavaScript={jsCode}
onMessage={this.onMessage}
renderLoading={this._renderActivityIndicator}
startInLoadingState={true}
/>
// Injected javscript code below
var jsCode = `
(function() {
window.postMessage = function(data) {
window.ReactNativeWebView.postMessage(data);
};
})()
(function() {
var originalPostMessage = window.postMessage;
var patchedPostMessage = function(message, targetOrigin, transfer) {
originalPostMessage(message, targetOrigin, transfer);
};
patchedPostMessage.toString = function() {
return String(Object.hasOwnProperty).replace('hasOwnProperty', 'postMessage');
};
window.postMessage = patchedPostMessage;
})();
window.addEventListener("message", function(event) {
var uat = ''
if (window.userAuthenticationToken) {
uat = window.userAuthenticationToken()
}
window.postMessage('setAuthToken,' + uat)
});
document.addEventListener("message", function(event) {
var uat = ''
if (window.userAuthenticationToken) {
uat = window.userAuthenticationToken()
}
window.postMessage('setAuthToken,' + uat)
});
`;
// onMessage
onMessage = (event) => {
//data received from webview
console.log('Reached onMessage', event.nativeEvent.data);
var response = event.nativeEvent.data
var data = response.split(',')
}