问题
In the landscape orientation I can "see through" one pixel of the view behind (the split view controller, visible between the status bar and the navigation bar):
I rechecked the width, the height and the autoresize parameters of the top-most view with the navigation bar, however I cannot understand where does the gap come from.
来源：https://stackoverflow.com/questions/7818982/empty-space-of-1-pixel-above-uinavigationbar