ios – 为什么autolayout预览和实际设备不匹配

我正在做xamarin.ios,我正在做UI,即在 xcode中自动布局.

在xcode预览中……我能够看到UI很好,但在某些设备的设备中,UI并不像预览中那样显示.

比如iPhone 5s,iPhone 6s plus.

有人可以解释一下它为什么会发生以及如何解决这个问题

谢谢

解决方法

导致自动布局错误的原因有很多.其中一些因为屏幕比例不同,其中一些因为iOS版本不同.

你看看你的调试器输出并检查这样的消息：

Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand,refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints)
(
    "<NSLayoutConstraint:0x7fc82d3e18a0 H:[UIView:0x7fc82aba1210(768)]>","<NSLayoutConstraint:0x7fc82d6369e0 H:[UIView:0x7fc82aba1210]-(0)-|   (Names: '|':UIView:0x7fc82d6b9f80 )>","<NSLayoutConstraint:0x7fc82d636a30 H:|-(0)-[UIView:0x7fc82aba1210]   (Names: '|':UIView:0x7fc82d6b9f80 )>","<NSLayoutConstraint:0x7fc82d3e7fd0 'UIView-Encapsulated-Layout-Width' H:[UIView:0x7fc82d6b9f80(50)]>"
)

而不仅仅是调试它.