科尔多瓦Android：如何侦听Javascript中的自定义事件？

Question

with Cordova Android, how can javascript listen to custom event fired in Java code?

A typical use case is when an activity starts, it connects to a back end server and waits until the server sends back a message, then notifies javascript to make UI updates. How should it be done in Cordova?

Thanks

Answer 1

Have you looked at: Asynchronous communication between Javascript and Phonegap Plugin

This seems to be to be similar to what you are trying to achieve.

Answer 2

So far I understood you need a custom event listener to send a request to server and receive the data from server. You can use custom event listner

var evt = document.createEvent("Event");
evt.initEvent("myEvent",true,true);

// custom param
evt.foo = "bar";

//register
document.addEventListener("myEvent",myEventHandler,false);

//invoke
document.dispatchEvent(evt);

It's the way how you can register event listener, use it.

There are plenty of resources to learn about this

How to Create Custom Events in JavaScript to Program with HTML

JavaScript custom Event Listener

Generating custom javascript events