android - how to call parameterized javascript function in the WebKit? - Stack Overflow

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I am trying to pass 2 parameters to a javascript function.This code webview.loadUrl("javascript: function_to_call();"); works fine without parameters but i couldn't use it with parameters.

This is javascript junction :

function changeLocation(_lon , _lat){
    var zoom=16;
    var lonLat = new OpenLayers.LonLat( _lon , _lat ).transform(         
        new OpenLayers.Projection("EPSG:4326"), 
        map.getProjectionObject());

    map.setCenter (lonLat, zoom);
}

And this is how i call it from java :

webView.loadUrl("javascript:changeLocation( -0.1279688 ,51.5077286 );") ;

Edit: I couldn't find the problem and i changed my approach, now i am injecting whole javascript function with desired changes everytime when i need to. It is not best solution but it works. Thank you everyone for your help.

I am trying to pass 2 parameters to a javascript function.This code webview.loadUrl("javascript: function_to_call();"); works fine without parameters but i couldn't use it with parameters.

This is javascript junction :

function changeLocation(_lon , _lat){
    var zoom=16;
    var lonLat = new OpenLayers.LonLat( _lon , _lat ).transform(         
        new OpenLayers.Projection("EPSG:4326"), 
        map.getProjectionObject());

    map.setCenter (lonLat, zoom);
}

And this is how i call it from java :

webView.loadUrl("javascript:changeLocation( -0.1279688 ,51.5077286 );") ;

Edit: I couldn't find the problem and i changed my approach, now i am injecting whole javascript function with desired changes everytime when i need to. It is not best solution but it works. Thank you everyone for your help.

• javascript
• android
• webview
• proj4js
• mobile-webkit

Share Improve this question Follow edited Jun 19, 2016 at 19:49 sambomartin 6,81377 gold badges4343 silver badges6464 bronze badges asked Nov 16, 2010 at 15:03 dirhemdirhem 62111 gold badge1212 silver badges2525 bronze badges 6

• @dirhem: Is this loadUrl() (note: capital U) on the WebView widget in Java? Or something else? – CommonsWare Commented Nov 16, 2010 at 15:11
• @ CommonsWare Sorry i just mistyped here and yes it is WebView widget's loadUrl function. – dirhem Commented Nov 16, 2010 at 15:18
• Could you post the source code that is giving you trouble? Also, are there any error messages? – Jake Commented Nov 16, 2010 at 15:22
• @ Jake I have posted the source coude and no i am not having any error message. – dirhem Commented Nov 16, 2010 at 15:46
• 1 did you try webView.loadUrl('javascript:changeLocation( "-0.1279688" ,"51.5077286" );') ;? – josh.trow Commented Nov 16, 2010 at 16:06

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2 Answers 2

Sorted by: Reset to default 8

What you have looks fine. Here is a sample project that demonstrates an almost identical syntax.

Try changing webView.loadUrl("javascript:changeLocation( -0.1279688 ,51.5077286 );") ;

to webView.loadUrl("javascript:changeLocation( '-0.1279688' ,'51.5077286' );") ; and maybe getting rid of the ;

I just had a similar problem and I fixed it by adding the '' around my parameter. I didn't have a semicolon in my solution either and it worked so you may need to remove it.

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