UICollectionViewLayout2016-08-05 本文已影响37人 iPhone http://blog.csdn.net/majiakun1/article/details/17204921 http://www.itstrike.cn/Question/1c542b3c-1cf1-440c-aa02-312b231ee948.html http://stackoverflow.com/questions/19443204/assertion-failure-in-uicollectionviewdata-validatelayoutinrect-on-ios7 http://stackoverflow.com/questions/18339030/uicollectionview-assertion-error-on-stale-data
