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I've got a smaller UIWebView within a UIView. I want to set the UIView's background color to be the same as the webView's loaded HTML. Is this possible?
I've tried, in webViewDidFinishLoad, to get the color like this:
NSLog(@"color: %@", [webView stringByEvaluatingJavaScriptFromString: @"document.body.style.background"]);
.. but it doesn't return anything.
284
working code in only three steps ..
1)Copy code and paste it in your project.
2)Connect ___webView outlet to UIWebView in xib file.
3)Run.
- (void)viewDidLoad
{
[___webView loadHTMLString:[NSString stringWithFormat:@"<html><body id=\"mybody\" style=\"background-color:green;width:100px;height:100px;\"><b>Hello buddy</b></body></html>"] baseURL:nil];
___webView.delegate=self;
[super viewDidLoad];
}
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
NSString *javaScript = @"document.body.style.background";
NSLog(@"color is %@",[webView stringByEvaluatingJavaScriptFromString:javaScript]);
NSLog(@"did load finish ");
}
//output is -----
2013-09-03 11:56:33.187 ads[3655:11303] color is green
2013-09-03 11:56:33.188 ads[3655:11303] did load finish
121
In HTML resource. I use
body bgcolor="#FF0000"
In that case my code should be.
- (void)webViewDidFinishLoad:(UIWebView *)webView{
NSLog(@"Done loading");
NSLog(@"color1: %@", [webView stringByEvaluatingJavaScriptFromString: @"document.body.bgColor"]);
}
Output was -
2013-09-02 16:47:53.986 WebViewTest[14674:707] color1: #FF0000
Now, In HTML resource, I use
body style="background-color:#FF0000"
In that case my code should be.
- (void)webViewDidFinishLoad:(UIWebView *)webView{
NSLog(@"Done loading");
NSLog(@"color1: %@", [webView stringByEvaluatingJavaScriptFromString: @"document.body.style.backgroundColor"]);
}
Output was -
2013-09-02 16:55:11.531 WebViewTest[14691:707] color1: rgb(255, 0, 0)
As you can see, depending on how you apply bgcolor to HTML, also changes the way you access it via java script....
Hope this helps!
22
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