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mamaral / Onboard

An iOS framework to easily create a beautiful and engaging onboarding experience with only a few lines of code.
MIT License
6.46k stars 765 forks source link

When I run Onboard, an error has occurred #52

Closed lizhaodong closed 9 years ago

lizhaodong commented 9 years ago

The environment：iOS7.1+iphone4s * Assertion failure in -[_UIQueuingScrollView _replaceViews:updatingContents:adjustContentInsets:animated:], /SourceCache/UIKit/UIKit-2935.138/_UIQueuingScrollView.m:383 2015-06-08 18:00:08.856 Onboard[442:60b] * Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: [views count] == 3' *\ First throw call stack: (0x2d88cf83 0x3803dccf 0x2d88ce5d 0x2e23ad5b 0x3060ab99 0x3060da75 0x3060a1a9 0x300a9d59 0x2fd2762b 0x2fd22e3b 0x2fd22ccd 0x2fd226df 0x2fd224ef 0x2fd1c21d 0x2d858255 0x2d855bf9 0x2d855f3b 0x2d7c0ebf 0x2d7c0ca3 0x326c6663 0x3010d14d 0x996d1 0x3854aab7) libc++abi.dylib: terminating with uncaught exception of type NSException。

Some helpful information online： http://stackoverflow.com/questions/14220289/removing-a-view-controller-from-uipageviewcontroller http://stackoverflow.com/questions/20004310/invalid-parameter-exception-thrown-by-uiqueuingscrollview

lizhaodong commented 9 years ago

shielding OnboardingContentViewController.m code line 129 of "self viewDidAppearBlock ()" , the program will not go wrong

mamaral commented 9 years ago

Thanks for the info! Do you have steps to reproduce this?

lizhaodong commented 9 years ago

@mamaral: After the start process, continuously in the interface between the slide switch, this bug will appear after a lot of time。

lizhaodong commented 9 years ago

I have updated the latest code, but also to the bug. Repeat steps：In the first interface and the second interface between continuous switching，then appear it. Popup animation caused this bug。

mamaral commented 9 years ago

Awesome, I was able to reproduce it reliably and also do some research on it... It looks like a UIKit bug and appears to manifest when scrolling between view controllers in a UIPageViewController while also displaying a UIAlertView. Honestly, there's probably nothing I can do other than file a radar with Apple, unless I'm missing something. If you just don't implement anything like an alert view in the viewDidAppear block, you should be fine.

mamaral commented 9 years ago

Scratch that, I may have found a workaround on my end... Hold please...

mamaral commented 9 years ago

It looks like https://github.com/mamaral/Onboard/commit/7812b2d7178602c0d9b144fde21e7a0a5f94bb25 fixes that issue. I pushed version 2.1.4 to CocoaPods, so when you're able to pull the newest version let me know if the problem goes away.

lizhaodong commented 9 years ago

I have updated the latest code, it`s very good the problem goes away.

mamaral commented 9 years ago

Awesome, thanks for your help!