xib / storyboard 限定です。コードで配置してる人は他の方法を探してください。 何故ずれるか iOS 7 Release Notes UIKit の項に書いてあります。 If a UITextField or a UILabel that is baseline-aligned with constraints has attributes that change after the constraints have been added, the layout may be incorrect. The exception to this is -setFont: on UILabel, which should work as expected. Workaround: Avoid making changes in UITextField or UILabel afte
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