ios - UIBarButtonItem clickable on left but not on right of navigation controller -

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this strange behavior , i'm experiencing in ios8 ipads. have uibarbuttonitem needs go on right side of navigation bar. here code set button:

        uibarbuttonitem *btnattopen = [[uibarbuttonitem alloc] init];         [btnattopen setaction:@selector(addattclick:)];         [btnattopen setimage:[uiimage imagenamed:@"addatt"]];         [btnattopen settarget:self];         [self.navigationitem setrightbarbuttonitem:btnattopen];

when this, btnattopen button appears should not clickable. behaves if static image. strangest part of if replace setrightbarbuttonitem: setleftbarbuttonitem: button behaves intended.

this doesn't make sense me. has seen kind of behavior? ideas why may occurring? thanks!

if doesn't want react appropriately touches, problem 1 of parent view's frames has incorrect size, doesn't cover child's frame.

you check them, example, printing out view hierarchy in gdb: po [[uiwindow keywindow] recursivedescription]


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