UIWebView scalesPageToFit won't scale page

问题

I have a UIWebView that, despite having scalesPageToFit set to YES, doesn't perform any such scaling operation: The web page starts off zoomed in and it's necessary to unpinch to get the whole thing on the page.

What could prevent UIWebView::scalesPageToFit from being honored?

回答1:

You could inject the viewport element via JavaScript.

Look for the viewport meta tag here: Safari Meta Tags

<meta name="viewport" content="width=320, initial-scale=2.3, user-scalable=no">

回答2:

Create a file in your project named changePageWidth.js:

function changePageWidth(width) {
  var element = document.createElement('meta');
  element.name = "viewport";
  element.content = "width=" + width;
  var head = document.getElementsByTagName('head')[0];
  head.appendChild(element);
}

and then add this code in webViewDidFinishLoad: of UIWebView's delegate:

- (void)webViewDidFinishLoad:(UIWebView *)webView {
    NSString *path = [[NSBundle mainBundle] pathForResource:@"changePageWidth" ofType:@"js"];
    NSString *jsCode = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
    [webView stringByEvaluatingJavaScriptFromString:jsCode];
    NSString *jsCall = [NSString stringWithFormat:@"changePageWidth(%d)", webView.frame.size.width];
    [webView stringByEvaluatingJavaScriptFromString:jsCall];
}

回答3:

May be you can use java script to resize your browser

NSString *jsCommand = [NSString stringWithFormat:@"document.body.style.zoom = 1.5;"];
webLookupView stringByEvaluatingJavaScriptFromString:jsCommand];

来源：https://stackoverflow.com/questions/9434590/uiwebview-scalespagetofit-wont-scale-page

标签

iphone

uiwebview