uitableview - iOS 7.1 doesn't allow Dynamic tableview Height -

i've vc lets call "detailsvc" tableview have rows different height.

the "detailsvc" added subview vc called "mainvc"

in "detailsvc"

- (void)viewdidload {     [super viewdidload];      self.automaticallyadjustsscrollviewinsets = yes;     [self.tableview registerclass:[uitableviewcell class] forcellreuseidentifier:cellidentifier];     self.tableview.rowheight = uitableviewautomaticdimension;  }  - (void)viewwillappear:(bool)animated {     [super viewwillappear:animated];     [self.navigationcontroller setnavigationbarhidden:no animated:animated]; }  - (void)viewdidlayoutsubviews {     [super viewdidlayoutsubviews];     self.tableviewheightconstraint.constant = self.tableview.contentsize.height;     [self.tableview needsupdateconstraints];      cgfloat containerheight = cgrectgetheight(self.tableview.bounds) + self.addresslabelheightconstraint.constant;     [self.tableviewdelegate punchdetailscontroller:self didupdatetableviewwithheight:containerheight];     [self.contentview layoutifneeded]; }  - (cgfloat)tableview:(uitableview *)tableview heightforrowatindexpath:(nsindexpath *)indexpath{     return uitableviewautomaticdimension; }  - (cgfloat)tableview:(uitableview *)tableview estimatedheightforrowatindexpath:(nsindexpath *)indexpath{     return uitableviewautomaticdimension; } 

this works in ios 8 , above , doesn't work in ios 7 or 7.1

the tableview's height coming out 0 , doens't display tableview @ all.

i understand "uitableviewautomaticdimension" part of ios 8 , not available in ios 7.

what other approach should use work both ios 7 , ios 8.

my issue similar https://stackoverflow.com/questions/29425782/ios7-0-and-ios-7-1-doesnt-honor-dynamic-tableview-height

i think you'll have check os version , lower 8, calculate height of cell manually , return it. also, performance reasons, ios 7 return constant, or don't implement estimatedheightforrowatindexpath

z.