Can the PostMessage API be used to communicate with an Android WebView?

Question

I usually use the HTML5 PostMessage API to communicate information from my iframed content to the parent frame. Recently I\'ve had my content used inside an Android WebView (as

Answer 1

You need to use an intermediate abstract interface that in one implementation processes messages via PostMessage and in another case via addJavascriptInterface.

window.addEventListener("message", onReceivedPostMessage, false);

function onReceivedPostMessage(event){
     //..ex deconstruct event into action & params
     var action = event.data.action;
     var params = event.data.params;
     performAction(action, params); //performAction would be the uniform API
}

function onReceivedActivityMessageViaJavascriptInterface(json){
     //..ex deconstruct data into action & params
     var data = JSON.parse(json); 
     var action = data.action;
     var params = data.params;
     performAction(action, params); //performAction would be the uniform API
}