为x位置设置的约束 [英] Constraints to be set for x position

问题描述

我有一个场景，其中我必须显示四个圆圈.这些应该在屏幕的中央.我试图放置x和top约束，但这不适用于iPhone 4设备.

I've a scenario where in I've to display four circles. These should be in center of screen. I tried to place x and top constraint but this doesn't works fine for iPhone 4 device.

我应该设置哪些约束条件，以便所有iPhone设备的所有四个圆圈都出现在中心?

What constraints should I set so that all four circles should appear in center for all iPhone device?

此外，底部有UICollectionView.我试图设置顶部，左侧，左侧和右侧，但这没有用.

Further, there is UICollectionView in bottom. I tried to set the top, left, w and height but this didn't worked.

有解决方案吗?

推荐答案

1)将第4个圆圈嵌入UIView.

1) Embed your 4 circle in UIView.

2)设置UIView约束顶部，固定宽度，固定高度和水平中心

2) Set UIView constraint top, fixed width,fixed height and horizontal center

3)现在选择所有4个圆并设置约束，例如顶部，前导，尾部，底部和等宽.

3) Now Select all 4 circle and set constraint like top, leading,trailing,bottom and equal width.

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