Webview callbacks

[PedroD]

I want to action a callback from a button in a webview, what is wrong with this trivial example?


function OnStart()

{

    lay = app.CreateLayout("linear", "VCenter,FillXY");    

    web = app.CreateWebView(0.8, 0.8);

//I want to call a DS function
    web.LoadHtml("<button onclick=boo()>say boo</button>");

    lay.AddChild(web);

    app.AddLayout(lay);

}

  
function boo() { app.ShowPopup("Boo!"); };

Pete

[Steve Garman]

Two things.

1 Your HTML does not know anything about DroidScript

2 Even if it did, onclick would not know how to find a function outside the WebView.

Try this

function OnStart()

{
    var s='<script src="file:///android_asset/app.js"></script>'+
    '<script type="text/javascript">'+
    ' '+
    'function myboo(id,field,deflt){ '+
    'app.Execute("boo()")}</script>'

    lay = app.CreateLayout("linear", "VCenter,FillXY");    

    web = app.CreateWebView(0.8, 0.8);

    //I want to call a DS function

    web.LoadHtml(s + "<button onclick=myboo()>say boo</button>");

[PedroD]

Thanks Steve,

It was obvious to me that the snippet would not work,but there is nothing in the wiki exploring how to do webview callbacks,

Regards

Pete

[Steve Garman]

Pete,
if you feel like adding a sample and/or a description to the wiki, it would be much appreciated.

If you (or anyone else) want to just clean up that snippet with a bit of an explanation, it would be better than nothing.

[John LaDuke]

I know its an old thread but...

So to clarify for a newbie like myself, the "app" in a webview knows nothing of the "app" in the script that created it, so calling app.GetObjects() in a webview would return an empty array?

[Dave Smart]

Yep, that is correct.

[John LaDuke]

...that's OK, I got SaveText and LoadText to pass a string back from the webview. I attached a filepicker as proof of concept.

[Steve Garman]

You can avoid using LoadText and SaveText by calling a function outside your html using
app.Execute()

Have you seen this thread?

https://groups.google.com/d/msg/androidscript/9UStRzvMBaI/W3jiBL0ACgAJ