UIWebView未放大iOS8

我想在WebView中放大。我在iOS中更新。请帮助我。有人说这是WebView的默认属性。我正在iOS8中测试。这对我不起作用

self.myWebView= [[UIWebView alloc] init];
[self.myWebView setScalesPageToFit:YES];
[self.myWebView setDelegate:self];
[self.myWebView.scrollView setDelegate:self];
[self.myWebView setDataDetectorTypes:UIDataDetectorTypeNone];
  [self.myWebView.scrollView setBounces:NO];
[self.myWebView.scrollView setShowsHorizontalScrollIndicator:NO];
[self.myWebView.scrollView setShowsVerticalScrollIndicator:NO];
[myScrollView addSubview:self.myWebView];

- (void)webViewDidFinishLoad:(UIWebView *)theWebView
{

    self.myWebView.scrollView.delegate = self; 
 self.myWebView.scrollView.maximumZoomScale = 20; // set as you want.
    self.myWebView.scrollView.minimumZoomScale = 1; // set as you want.
}
 (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(CGFloat)scale
{
    self.myWebView.scrollView.maximumZoomScale = 20;
}

---

您正在UISCrollview上添加webview？在UISCrollview中添加webview需要什么？UISCrollview超级类是UISCrollview不需要添加在scrollview上的webview直接添加在view上它可以工作任何问题通知我OK！给我一些时间，我会检查一下，然后再试一次[self.myWebView setUserInteractionEnabled:YES]；

if u are not use viewForZoomingInScrollView they work automatically. if you are use viewForZoomingInScrollView 
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView
{

    if (scrollView ==myWebView.scrollView){

          return self.myWebView;
    }
    else
    {
        return nil;
    }
}