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Doesn't mean there's no way to make it work. But probably means you want to limit the amount of time you spend banging your head against the wall trying to get it to work.
That said, I have successfully embedded UIWebViews in UIScrollViews as long as one's userInteractionEnabled was set to NO.
oh... oh... my god. i don't know why i implemented a scroll view. you're totally right. a webview scrolls itself. ah now i know. it was a normal view before i switched to a webview. thanks! dropped the scrollview, everything works fine.
iphone - UIScrollView not bouncing vertical when scrolled to top - Sta...
It works. No subclassing required and if Apple ever change the UIWebView hierarchy, it shouldn't crash.
This fix seems to only work in my OS 4.1 Simulator, not on my OS 3.1.3 iPhone. Does anybody know if this fix only works on particular OS versions?
I didn't test this particular situation, but I've managed to prevent a scrollview from bouncing at the top and bottom by subclassing the scrollview and overriding setContentOffset: and setContentOffset:animated:. The scrollview calls this at every scroll movement, so I'm fairly certain they will be called when scrolling to the textfield.
You can use the delegate method textFieldDidBeginEditing: to determine when the scroll is allowed.
If your current scroll behaviour works with a setContentOffset: override, just place it inside the else blocks (or preferably, in a method you call from the else blocks).
iphone - Can I override scroll view's automatic behavior to scroll to...
Dont do that - my app got rejected for using the first line. Wasted so much time for me. i used [[webView.subviews lastObject] setScrollEnabled:NO]; and apple said it was a private API and hence rejected it; am about to resubmit now but used "userInteractionEnabled:NO" since i dont need any active links in the app.
I have something like 4 apps on the appstore using this. You app was clearly rejected for another reason. this is not a private API.
This is really not a good idea. You're relying on the fact that the UIScrollView is the first subview of UIWebView which may well be the case for now but this could easily change in future (even minor) updates to iOS or particular configurations. You should really do a for iteration over subviews to actually find the UIScrollView (it really isn't that much work and at least you are guaranteed to get a UIScrollView and not crash your program...
I updated the content size to disable vertical scrolling, and the ability to scroll still remained. Then I figured out that I needed to disable vertical bounce too, to disable completly the scroll.
Maybe there are people with this problem too.
You saved me. My contentSize and frame were the same and I could not for the life of me figure out what was wrong. Thanks a bunch!!
Your answer is why I love stackoverflow! :-) Holy smoke... this drove me nuts! You are right. It's the bounce effect. I want the bounce effect, but not when there is no need to scroll, so I'll be looking to disable/re-enable that effect now in code depending on whether there is a need to scroll.
I tried this out, and it faults when I try it... Strangely, i can access and set scrollView.bounces (with no effect), but when I try and set scrollEnabled, it faults...
I believe the subview is called UIScroller, not UIScrollView. UIScroller is an undocumented and unsupported class that shares a lot in common with UIScrollView, but you can't depend on everything working the same way and not changing in future OS versions.
I did this on an iPad (not iPhone) app running iOS 3.2, and was able to get a UIScrollView out of my UIWebView. I successfully customized this view to change more than just its bouncing behavior so I can testify to this working on iPad. My app did not go through the app store, but I don't think there will be a problem with undocumented API's here. The clever part for this solution is that you're just traversing a UIView hierarchy and using a UIScrollView - both of which are perfectly kosher.
Late-in-the-day comment: you should adjust for the content inset regardless of OS version. iOS 7 happens to use it for allowing scroll content below the status bar but it's always been exposed as a property, so always been potentially used by somebody.
I think this might be a bug in iOS autolayout wrt UIScrollViews. I was having a similar problem only in my case, I would push to a detail view, then pop back to the master view which is a UIScrollView. Content in the scroll view would be shifted up. Scrolling the scroll view to the top, then pushing and popping again and things would be properly reset.
I even tried plain out of the box master detail app using a UIScrollView instead of a table view as master, and was able to demonstrate the defect.
Table views and Collection views do not seem to have this problem.
 One more weird behaviour to worry about. Anyhow, I ended up setting the scroll view content inset for top to -20 (from IB).
I've observed that -20 to [other object edge] constraints can often fix these odd UI offset behaviors.
iphone - iOS7 UIScrollView show offset content below status bar - Stac...
In iOS7 I had trouble getting a particular scrollview to go to the top, whihc worked in iOS6, and used this to set the scrollview to go to the top.
I have the same issue in iOS7. Does anyone know how to enable this for a UITableView?
To make it scroll try with large number in contentSize like CGSizeMake(320, 1687). If it works that means you are not setting the contentSize large enough to have all its content.
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