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我在一個UITableView添加擴充UIButton到UITableFooterView。如果我碰到這個按鈕，動作是增加一個新的小區（「insertRowsAtIndexPaths」）爲它工作得很好的時候tableView.Most，但有時它可能崩潰如：UITableView tableFooterView可能會導致崩潰？
2013-02-04 15:00:56.139 browser2345HD[3156:c07] *** Assertion failure in -[UIViewAnimation initWithView:indexPath:endRect:endAlpha:startFraction:endFraction:curve:animateFromCurrentPosition:shouldDeleteAfterAnimation:editing:], /SourceCache/UIKit_Sim/UIKit-2372/UITableViewSupport.m:2596
2013-02-04 15:00:56.139 browser2345HD[3156:c07] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Cell animation stop fraction must be greater than start fraction'
*** First throw call stack:
(0x1e6a012 0x1c8fe7e 0x1e69e78 0x1419f35 0xb365df 0xb348f0 0xb358d8 0x970666 0x96cc67 0x978f95 0x978fc3 0x8ba4b 0x962fa73 0x9645c62 0x964683b 0x963015f 0x9700ac4 0x9700b09 0x96300c9 0x963e977 0x9630fd8 0x963eba7 0x963f393 0x963eba7 0x963f393 0x963eba7 0x963f393 0x963eba7 0x963f393 0x96f931d 0x973e387 0x9739717 0x9740ff3 0x1ddfbf5 0x1ddf962 0x1e10bb6 0x1e0ff44 0x1e0fe1b 0x2bd17e3 0x2bd1668 0x8cb65c 0x2955 0x2855)
libc++abi.dylib: terminate called throwing an exception
(lldb)
任何人都可以解決這個問題嗎？