objective c - iOS 8 UITableView rotation bug -

objective c - iOS 8 UITableView rotation bug -

so after compiling app on xcode 6, noticed unusual bug happens when running on ios 8: uitableview takes wrong inner dimensions after updating frame.

now i'll seek explain exact situation: have uitableview rotated on side, makes horizontal uitableview. happens through tableview.transform = cgaffinetransformmakerotation(-m_pi / 2);. after setting transform, , settings frame - fine. of course of study scheme in cases sends parent frame alter because needs set parent real sizes , not xib sizes or initialization size. in moment - when relayout subviews, including table view - goes wrong. frame of table view set bounds of containing view, inner scrollview (in ios 8 uitableview has uiscrollview within it, called uitableviewwrapperview. uitableview uiscrollview itself, can't figure out why needed one...) takes "height" equals parent width. , "height" width property, rotated.

now can estimate have bug relating width of inner uiscrollview actual width of parent uitableview, perchance reading .frame.size.width instead of .bounds.size.width. unusual thing when investigating frame of subviews of uitableview- seems good! must rendering problem somewhere.

so left horizontal table has blank gap on top, because "height" of cells 320 instead of 568, while "width" of cells fine, set 320.

i'll happy hear other people experiencing problem (or apple), have found solution , posting here question, future reference me , others.

so alter made behave, instead of doing this:

- (void)layoutsubviews { tableview.frame = self.bounds; }

i have reset transform, set frame bounds uitableview expect locally after transform, , set transform , set right frame. bit confusing, here goes:

- (void)layoutsubviews { if (uidevice.currentdevice.systemversion.floatvalue >= 8.f) { // ios 8 layout bug! table's "height" taken "width" after changing frame. if cancel transform, set width/height final width/height, , rotate , set virtual width/height - works! cgrect rotatedframe = self.bounds, unrotatedframe = rotatedframe; unrotatedframe.size.width = rotatedframe.size.height; unrotatedframe.size.height = rotatedframe.size.width; tableview.transform = cgaffinetransformidentity; tableview.frame = unrotatedframe; tableview.transform = cgaffinetransformmakerotation(-m_pi / 2); tableview.frame = rotatedframe; } else { tableview.frame = self.bounds; } }

ios objective-c xcode ios8 xcode6