I am trying to call a javascript function from loaded local html file in UIWebView
but it deosn't respond
it look like this
NSString *script=[NSString stringWithFormat:@"sample()"];
if (tekst.loading) {
NSLog(@"Loading");
} else {
NSLog(@"Fully loaded");
[tekst stringByEvaluatingJavaScriptFromString:script];
}
and in html
<head>
....
<script type='text/javascript'>
function sample() {
alert('Paznja');
}
</script>
...
</head>
It looks to me as if you are not using a delegate on your UIWebView. If you set a delegate and put the call to the Javascript into the "- (void)webViewDidFinishLoad:(UIWebView *)webView " method, it works fine:
UIWebView *wv = [[UIWebView alloc] initWithFrame:CGRectMake(0.0, 0.0, 700.0, 700.0)];
[self.view addSubview:wv];
wv.delegate = self;
[wv loadHTMLString:@"<html><head><script type='text/javascript'>function sample() {alert('Paznja');}</script></head><body><h1>TEST</h1></body></html>" baseURL:nil];
[wv release];
and in the same class:
- (void)webViewDidFinishLoad:(UIWebView *)webView {
[webView stringByEvaluatingJavaScriptFromString:@"sample()"];
}
When I run this code, the alert message works fine.
Additional note, if you are expecting an object back from the javascript function rather than a string then do the following:
NSString *json = [self.webView stringByEvaluatingJavaScriptFromString:@"JSON.stringify(TestMethod())"];
stringWithFormat:here. Just assign the string literal directly: NSString *script = @"sample()";