用Autolayout实现按钮的网格布局

Question

用Autolayout实现按钮的网格布局

我试图实现一个非常类似于Apple内置计算器应用程序的按钮布局: Calc应用特写镜头

我正在使用自动布局来定位按钮,并在每个按钮上绘制一个0.5px的边框,目标是按钮之间有1px的间隙(比如calc app,特写显示上面的像素,来自视网膜设备).

边界适用于:

    btn.layer.borderWidth=0.5f;
    btn.layer.borderColor=[[UIColor blackColor] CGColor];

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并使用Interface Builder设置布局.

应用截图

它几乎可以工作; 但是按钮之间的间隙存在一些差异 - 例如"1,2,3,直通"行和"4,5,6和"行之间的间隙是2像素,但是"7"之间的差距,8,9"和"cl,0,@"行只有一个像素.

限制是:

顶部黑色区域具有固定高度
所有按钮高度相同
在数字行中,数字按钮设置为相同的宽度,THRU,AND,ALL OFF和ENTER按钮设置为相同的固定宽度
顶部的按钮固定在黑色区域的底部,底部的行固定在superview的底部.在IB中按钮的位置相互对接.

在界面构建器中和运行时,我没有看到任何自动布局错误; 并且autolayout信息的调试器转储给了我:

po [[UIWindow keyWindow] _autolayoutTrace]

*<UIWindow:0x10908a560> - AMBIGUOUS LAYOUT
|   *<UILayoutContainerView:0x109136140>
|   |   *<UINavigationTransitionView:0x10908ef80>
|   |   |   *<UIViewControllerWrapperView:0x109138870>
|   |   |   |   *<UIView:0x1090e6d10>
|   |   |   |   |   *<UILabel:0x1090d5bb0>
|   |   |   |   |   *<UIButton:0x1090d27e0>
|   |   |   |   |   |   <UIButtonLabel:0x1091c9190>
|   |   |   |   |   *<UIButton:0x1090844c0>
|   |   |   |   |   |   <UIButtonLabel:0x1091c7990>
|   |   |   |   |   *<UIButton:0x109088b60>
|   |   |   |   |   |   <UIButtonLabel:0x1091c6190>
|   |   |   |   |   *<UIButton:0x1090e2ce0>
|   |   |   |   |   |   <UIButtonLabel:0x1091c4990>
|   |   |   |   |   *<UIButton:0x1090e4e50>
|   |   |   |   |   |   <UIButtonLabel:0x1091c3190>
|   |   |   |   |   *<UIButton:0x1090db730>
|   |   |   |   |   |   <UIButtonLabel:0x1091c1990>
|   |   |   |   |   *<UIButton:0x109068f50>
|   |   |   |   |   |   <UIButtonLabel:0x1091c0190>
|   |   |   |   |   *<UIButton:0x10906db80>
|   |   |   |   |   |   <UIButtonLabel:0x1091be990>
|   |   |   |   |   *<UIButton:0x1090d23a0>
|   |   |   |   |   |   <UIButtonLabel:0x1091bd190>
|   |   |   |   |   *<UIButton:0x1090c8520>
|   |   |   |   |   |   <UIButtonLabel:0x1091bb990>
|   |   |   |   |   *<UIButton:0x1090c9090>
|   |   |   |   |   |   <UIButtonLabel:0x1091ba190>
|   |   |   |   |   *<UIButton:0x1090c5680>
|   |   |   |   |   |   <UIButtonLabel:0x1091b8990>
|   |   |   |   |   *<UIButton:0x1090d7fa0>
|   |   |   |   |   |   <UIButtonLabel:0x1091b7190>
|   |   |   |   |   *<UIButton:0x1090cc820>
|   |   |   |   |   |   <UIButtonLabel:0x1091b5990>
|   |   |   |   |   *<UIButton:0x10909dda0>
|   |   |   |   |   |   <UIButtonLabel:0x1091b4190>
|   |   |   |   |   *<UIButton:0x1090c8090>
|   |   |   |   |   |   <UIButtonLabel:0x1091b2990>
|   |   |   |   |   *<UIButton:0x1090c8e30>
|   |   |   |   |   |   <UIButtonLabel:0x1091b1190>
|   |   |   |   |   *<UIButton:0x1090d5390>
|   |   |   |   |   |   <UIButtonLabel:0x1091af990>
|   |   |   |   |   *<UIButton:0x10d30d260>
|   |   |   |   |   |   <UIButtonLabel:0x1091ae190>
|   |   |   |   |   *<UIButton:0x10909a6a0>
|   |   |   |   |   |   <UIButtonLabel:0x1091ac990>
|   |   |   |   |   *<UIButton:0x1090cca40>
|   |   |   |   |   |   <UIButtonLabel:0x109161160>
|   |   |   |   |   *<UIButton:0x10d30ea90>
|   |   |   |   |   |   <UIButtonLabel:0x109156460>
|   |   |   |   |   *<UIButton:0x1090da9e0>
|   |   |   |   |   |   <UIButtonLabel:0x109177ad0>
|   |   |   |   |   *<_UILayoutGuide:0x1090e6dd0> - AMBIGUOUS LAYOUT
|   |   |   |   |   *<_UILayoutGuide:0x1090ce080> - AMBIGUOUS LAYOUT
|   |   <UINavigationBar:0x10907da60>
|   |   |   <_UINavigationBarBackground:0x109087240>
|   |   |   |   <_UIBackdropView:0x1090899f0>
|   |   |   |   |   <_UIBackdropEffectView:0x10908b110>
|   |   |   |   |   <UIView:0x10908bbb0>
|   |   |   |   <UIImageView:0x1090877a0>
|   |   |   <UINavigationItemView:0x10916bc30>
|   |   |   |   <UILabel:0x10917f810>
|   |   |   <UINavigationItemButtonView:0x1090ee060>
|   |   |   |   <UILabel:0x1090ee5d0>
|   |   |   <_UINavigationBarBackIndicatorView:0x109098c80>

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任何人都可以提供有关如何使用Autolayout实现像素完美"布局的任何提示吗？或者我应该以编程方式进行此操作吗？