UIWebView scrollView.contentSize.height 没有改变

Question

After load htmlString, contentSize of scrollView in UIWebView don't changed. In other my viewControllers all good, but now it's something mysterious

I have

UIWebView *contentWebView;

I make it in some method

- (void)makeContent
{
    ...
    contentWebView = [[UIWebView alloc] initWithFrame:CGRectMake(5, imageView.originY + imageView.height + 5, mainView.width - 10, 100)];
    contentWebView.delegate = self;
    contentWebView.scrollView.scrollEnabled = NO;
    contentWebView.contentMode = UIViewContentModeScaleAspectFit;
    NSLog(@"%@", factDict[@"text"]);
    [contentWebView loadHTMLString:factDict[@"text"] baseURL:nil];
    contentWebView.height = contentWebView.scrollView.contentSize.height;
    [mainView addSubview:contentWebView];
}

- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    NSLog(@"%f %f %f %f ", webView.height, webView.scrollView.contentSize.height, contentWebView.height, contentWebView.scrollView.contentSize.height);
    [webView sizeToFit];
    NSLog(@"%f %f %f %f ", webView.height, webView.scrollView.contentSize.height, contentWebView.height, contentWebView.scrollView.contentSize.height);
...
}

Early in other controllers contentWebView.height = contentWebView.scrollView.contentSize.height; help me, but now it's not work

In log I have next

So I don\\t understand why contentsize.height not changed

EDIT

In my another viewcontrollers all good

- (void)makeScrollView
{
    CGFloat width = [Utils widthOfMainViewForOrientation:self.interfaceOrientation];
    [mainView removeFromSuperview];
    mainView = [[UIView alloc] initWithFrame:CGRectMake((self.view.width - width) / 2, 15, width, 100)];
    mainView.backgroundColor = [UIColor whiteColor];
    if ([self.fullInfoDictionary[@"content"] length]) {
        contentWebView = [[UIWebView alloc] initWithFrame:CGRectMake(6, 4, mainView.width - 12, 100)];
        contentWebView.contentMode = UIViewContentModeScaleAspectFit; 
        contentWebView.delegate = self;
        HelperDf.htmlString = self.fullInfoDictionary[@"content"];
        [contentWebView loadHTMLString:self.fullInfoDictionary[@"content"] baseURL:nil];
        contentWebView.scrollView.scrollEnabled = NO;
        [mainView addSubview:contentWebView];
    }
    [self.scrollView addSubview:mainView];
}

- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    contentWebView.height = contentWebView.scrollView.contentSize.height;
    NSLog(@"%f %f %f %f", webView.height, webView.scrollView.contentSize.height, contentWebView.height, contentWebView.scrollView.contentSize.height);
    [self reloadFrames];
}

i have next

I get htmlString from this controller

HelperDf.htmlString = self.fullInfoDictionary[@"content"];

And set in my first UIWebVIew but results - NO.

You can it's no matter if stay contentWebView.scrollView.scrollEnabled = NO; I change to YES, but results are same - in second case all good in first - NO

Answer 1

You need to change NO to YES your contentWebView.scrollView.scrollEnabled , such like

 contentWebView.scrollView.scrollEnabled = YES;

EDITED

- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    [webView sizeToFit];
    webView.scrollView.contentSize = CGSizeMake(320, contentWebView.scrollView.contentSize.height + 60);
} 

Answer 2

The problem is that your view isn't visible yet. The values you are looking for are only made visible once it is added to a view which is in the view stack.

Somewhere along the way it seems that your view isn't added to at the time when you are checking your values.