［整理］swift的视图的布局的约束

搜：

swift view Layout Constraints

参考：

import Cartography

        self.view.addSubview(self.logoImageView)

        //1. logo image
        self.logoImageView.image = LoginLogoImage
        self.logoImageView.contentMode = .Center
        self.logoImageView.backgroundColor = AppMainColor
        constrain(self.logoImageView) {logoImageView in
            logoImageView.top == logoImageView.superview!.top
            logoImageView.centerX == logoImageView.superview!.centerX
            logoImageView.height == LoginLogoImageHeigh
            logoImageView.width == UIScreen.mainScreen().bounds.width
        }

即可。

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