How to call array coded in objective c in javascript or html file

Question

I have an array which has some data of lines where I have to display it in onclick of a button in javascript, so how to call a array which is coded in objective C in javascript or to html file. The following is my Objective c code:

- (void)viewDidLoad
{
    [super viewDidLoad];

    [webView loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:@"Array"ofType:@"html"]isDirectory:NO]]];

        NSString *path = [[NSBundle mainBundle] pathForResource:@"Example" ofType:@"csv"];
        NSString *contents = [NSString stringWithContentsOfFile:path encoding:NSASCIIStringEncoding error:nil];
        NSArray *lines = [contents componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"\n,"]];
        for (NSString* line in lines) {

                 NSLog(@"%@", line);


                }
                NSLog(@" %d", [lines count]);
}

Daniel Pereira · Accepted Answer · 2011-08-31 06:22:06Z

1

Check out this library:

http://code.google.com/p/jsbridge-to-cocoa/

answered Aug 31, 2011 at 6:22

Daniel Pereira

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Cedric Han · Accepted Answer · 2011-08-31 07:00:28Z

JSON-encode the NSStrings or NSArray (lines) you want to use in JavaScript. json-framework is a popular JSON library for Obj-C. You will end up with an NSString that represents your data.

Use stringByEvaluatingJavaScriptFromString: and use your JSON string there as a parameter to a function call or however else you see fit.

Example:

NSString *jsonLines = [lines JSONRepresentation];
NSString *javascript = [NSString stringWithFormat:@"myJavascriptFunctionThatProcessesLines(%@);", jsonLines];
[webView stringByEvaluatingJavaScriptFromString:javascript];

Sample JavaScript function:

function myJavascriptFunctionThatProcessesLines(lines) {
    for(var line in lines) {
        alert(line); // Or whatever
    }
}

json-framework

UIWebView Class Reference

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