Passing an array to a javascript function from objc

Question

I am trying to send an array to a javascript function via objective C.

I call the javascript function from my code by -

stringByEvaluatingJavaScriptFromString

I am now trying to pass an array of values to the javascript function.

This is what I tried -

- (void) webViewDidFinishLoad:(UIWebView *)webView
{
     NSArray *array = [NSArray arrayWithObjects:@"10",@"9",@"8", nil];
     string = [[array valueForKey:@"description"] componentsJoinedByString:@","];        

    [graphView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"methodName2(%@)", string]];
}

In my Javascript -

        <script>
            function methodName(val)
            {
                alert(val);
            }
        </script>

However, only the number 10 gets displayed on my alert message on the webview. So I feel I am doing something wrong. Could someone tell me what I am doing wrong? And also, I would need to convert that string back into an array in the javascript.

It would be great if someone could help me out with this.

It would be great if this could be accomplished by passing an object, not just a string. Oh well. — Alex Gray
– Alex Gray, Commented Feb 14, 2012 at 14:26

georg · Accepted Answer · 2012-01-16 23:31:23Z

6

try

[NSString stringWithFormat:@"methodName2([%@])", string]

answered Jan 16, 2012 at 23:31

georg

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3 Comments

learner2010 Over a year ago

that worked!!! thank you very much.. would you be able to tell me why that worked though?

learner2010 Over a year ago

Also, I need to convert the string back into an array in javascript.. when I tried to use the 'split' function, it is not working.. is it because of the way I am passing the "String" to the javascript?

georg Over a year ago

@learner2010, in the above code your variable "val" is already an array. No need to split it.

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