Set initial zoom/position of UIWebView

[kieran12]

Hey,

I've been working with the UIWebView and want to know if there is a way to set the zoom extra when a page is loaded.

For example, I have a web page with a table on part of it. I want the user to be able to see only that table. I have unchecked 'enable user interaction' so the user cannot move about the page. How do I set the part of the page shown when it loads though.

Any help appreciated.

[pmseltmann]

Originally Posted by kieran12

Hey,

I've been working with the UIWebView and want to know if there is a way to set the zoom extra when a page is loaded.

For example, I have a web page with a table on part of it. I want the user to be able to see only that table. I have unchecked 'enable user interaction' so the user cannot move about the page. How do I set the part of the page shown when it loads though.

Any help appreciated.

I know this is an old thread but I'm also tackling this issue. It would be really nice if I could zoom and pan to the portion of the website I'm interested in.

Thanks

[rahul7star]

did you find any solution's??

[baba147]

I have just tried it using JS. and it works:

for zoom:
[webView stringByEvaluatingJavaScriptFromString:@"document. body.style.zoom = 5.0;"];


for scroll:
int scroll=20; //Pixels to scroll
NSString* s=[[NSString alloc] initWithFormat:@"window.scrollTo(0, %i)",scroll];
[webView stringByEvaluatingJavaScriptFromString:s];

[pmseltmann]

A year late but thanks! I never ended up figuring that out!

[iSveinn]

Originally Posted by baba147

I have just tried it using JS. and it works:

for zoom:
[webView stringByEvaluatingJavaScriptFromString:@"document. body.style.zoom = 5.0;"];


for scroll:
int scroll=20; //Pixels to scroll
NSString* s=[[NSString alloc] initWithFormat:@"window.scrollTo(0, %i)",scroll];
[webView stringByEvaluatingJavaScriptFromString:s];

Nice, this does the trick.

However, there is still one small annoyance - you can see the zooming-in when the page loads. This is a pain when you navigate between pages. I tried disabling the 'Scale Pages To Fit' property of the WebView in Interface Builder, but then it won't zoom at all.

Any ideas on how to fix this?

[iMagic]

You set scalesPageToFit of UIWebView to YES
and
<meta name='viewport' content='width=device-width; initial-scale=2.0; maximum-scale=4.0; user-scalable=1;' />
in header of UIWebView, where these numbers are an example.

Good Luck!