Javascript return a string to objective c

Question

i got a webview and i would like to capture an input from a webview HTML form. i have tried but i cant can some one help me please

this is my webview code

        // Init Web View
    UIWebView *webView;
    webView = [[UIWebView alloc] initWithFrame:boundsRect];
    webView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
    webView.scalesPageToFit = YES;
    webView.contentMode = UIViewContentModeCenter;
    webView.multipleTouchEnabled = NO;
    webView.userInteractionEnabled = YES;
    [webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:url]]];
    [self addSubview:webView];
    [webView release];
    return self;

To get value from webView, i used below code.

NSString* value = [webView stringByEvaluatingJavaScriptFromString:@"document.getElementById('text').value"]‌; 
NSLog(@"got: %@",value);

i have tried with this : NSString* value = [webView stringByEvaluatingJavaScriptFromString:@"document.getElementById('text').value"]; NSLog(@"got: %@",value); — Danilo Costa
– Danilo Costa, Commented Jan 13, 2014 at 14:37
And the problem is ? -stringByEvaluatingJavaScriptFromString: return nil ? — Emmanuel
– Emmanuel, Commented Jan 13, 2014 at 15:14
it return an empty string @"" or nil ?? not 'anything' ... — Emmanuel
– Emmanuel, Commented Jan 13, 2014 at 15:20
To execute it after an HTML button is pressed see : stackoverflow.com/questions/6869199/… — Emmanuel
– Emmanuel, Commented Jan 13, 2014 at 15:30

Harper04 · Accepted Answer · 2014-01-13 14:37:08Z

0

You could look into how phonegap http://phonegap.com/ solves this.

answered Jan 13, 2014 at 14:37

Harper04

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