UIPageControl and UITabBar

[Sachelis]

I developed a view that contains a UIScrollView which allows the user to flip through a few pages of images. It also has a UIPageControl. All this works fine in the small test app I used to work out the challenges (at least for me) of scrolling through multiple images and allowing pinch zooming. Then I moved it into my main app, which has a UITabBar. Unfortunately, the page control no longer appears. I saw the thread, http://www.iphonedevsdk.com/forum/ip...-uitabbar.html, from back in '08 which presents the problem, but not a solution.

I've tried changing the bounds and frame of the UIPageControl, made my UIScrollView tiny to make sure it isn't hiding the page control, etc. I'm unsure if the page control just isn't compatible with the tab bar, or if I've made some other mistake...

[Sachelis]

I got this working and wanted to end the rumor (which I was perpetuating) that you can't have a UIPageControl with a UITabBar.

I initially based my scrolling using Apple's PageControl sample (https://developer.apple.com/library/...ion/Intro.html). That sample uses the AppDelegate to manage the scrolling. I must have made a mistake moving the code from the AppDelegate to a new UIViewController class, because I could never get the page control to display.

Later, I found this simple tutorial (David Janes' Code Weblog UIPageControl + UIScrollView) which shows how to use a UIPageControl and UIScrollView, but it handles the messages in a UIViewController. I dropped the tutorial’s ScrollingViewControl.h, .m, and .xib files in my project, routed my UITabBar to it, and instantly had a scrolling view with a tab bar and a page control indicator.

I've spent plenty of hours since getting things positioned, replacing the sample's images with views that will scroll, etc, but the bottom line is that you can definitely have a UIPageControl and a UITabBar (and a UINavigationController, FWIW) at the same time.

[Spookytooth]

Originally Posted by Sachelis

I got this working and wanted to end the rumor (which I was perpetuating) that you can't have a UIPageControl with a UITabBar.

I initially based my scrolling using Apple's PageControl sample (https://developer.apple.com/library/...ion/Intro.html). That sample uses the AppDelegate to manage the scrolling. I must have made a mistake moving the code from the AppDelegate to a new UIViewController class, because I could never get the page control to display.

Later, I found this simple tutorial (David Janes' Code Weblog UIPageControl + UIScrollView) which shows how to use a UIPageControl and UIScrollView, but it handles the messages in a UIViewController. I dropped the tutorial’s ScrollingViewControl.h, .m, and .xib files in my project, routed my UITabBar to it, and instantly had a scrolling view with a tab bar and a page control indicator.

I've spent plenty of hours since getting things positioned, replacing the sample's images with views that will scroll, etc, but the bottom line is that you can definitely have a UIPageControl and a UITabBar (and a UINavigationController, FWIW) at the same time.

Would you happen to have example code you can share? I am working on the same thing, and have been falling into all the same pits apparently. Thanks in advance.

[Spookytooth]

Never mind. Actually read and clicked the link above. Thanks!

[geeo]

I try to do the same, from the same tutorial I guess How To: UIScrollView with Paging | iOS Dev Notes, I achieve to add the scroll view in one of the view of my tabbar application, but the uipagecontrol only update when I click on it (and it triggers the page change).

But when I scroll into my scrollview, scrollViewDidScroll isn't triggered.

I used the xCode 4 template for the tabbar application, and there is no windows.xib so I guess that I miss a delegate somewhere.

Any help would be appreciated.