[英]3 views next to each other programmatically constraints
I'm trying to create a custom callOutView and for this i have a bubbleView
, which is a subclass of a UIView
in this view i want to create 3 views next to eachother.我正在尝试创建一个自定义 callOutView,为此我有一个bubbleView
,它是此视图中UIView
的子类,我想创建 3 个彼此相邻的视图。 First an imageView
, which has an static width and height on 60. Then an UIView which has a dynamically width depending on the total width of the bubbleView
.首先是一个imageView
,它的静态宽度和高度为 60。然后是一个 UIView ,它的动态宽度取决于bubbleView
的总宽度。 Then in the end there is another imageView with an static height and width again at 60. How can i achieve this?然后最后还有另一个具有静态高度和宽度的 imageView 再次在 60。我怎样才能做到这一点? i've tried below with snapKit , but does not seem to work.我在下面尝试过snapKit ,但似乎不起作用。
Illustration of what i want我想要的插图
Code i've tried我试过的代码
bubbleView = BubbleView()
bubbleView?.clipsToBounds = true
bubbleView?.layer.masksToBounds = true
self.addSubview(bubbleView!)
let logoImageView = UIImageView()
logoImageView.contentMode = UIViewContentMode.ScaleAspectFill
logoImageView.image = UIImage(data: logoImage!)
bubbleView?.contentView.addSubview(logoImageView)
logoImageView.backgroundColor = UIColor.whiteColor()
let informationView = UIView()
bubbleView?.contentView.addSubview(informationView)
informationView.backgroundColor = UIColor.redColor()
let discView = UIImageView()
discView.contentMode = UIViewContentMode.ScaleAspectFill
discView.image = UIImage(data: logoImage!)
bubbleView?.contentView.addSubview(discView)
discView.backgroundColor = UIColor.whiteColor()
logoImageView.snp_makeConstraints { (make) -> Void in
make.top.equalTo(bubbleView!).offset(0)
make.left.equalTo(bubbleView!).offset(0)
make.height.equalTo(60)
make.right.equalTo(informationView)
}
informationView.snp_makeConstraints { (make) -> Void in
make.top.equalTo(bubbleView!).offset(0)
make.left.equalTo(logoImageView).offset(0)
make.height.equalTo(60)
make.right.equalTo(discView).offset(0)
}
discView.snp_makeConstraints { (make) -> Void in
make.top.equalTo(bubbleView!).offset(0)
make.left.equalTo(informationView).offset(0)
make.height.equalTo(60)
make.right.equalTo(bubbleView!)
}
You need to set你需要设置
leftView
and rightView
equal to 60. leftView
和rightView
上的宽度约束等于 60。middleView.leading
equal leftView.trailing
middleView.leading
等于leftView.trailing
middleView.trailing
equal rightView.leading
. middleView.trailing
等于rightView.leading
。all.height
equal to 60. all.height
等于 60。all.top
equal parent.top
all.top
等于parent.top
You can try this in Playground.您可以在 Playground 中尝试此操作。
import UIKit
import XCPlayground
let parentView = UIView()
parentView.frame.size = CGSize(width: 450, height: 60)
parentView.backgroundColor = UIColor.whiteColor()
let leftView = UIView()
leftView.translatesAutoresizingMaskIntoConstraints = false
leftView.backgroundColor = .blackColor()
let rightView = UIView()
rightView.translatesAutoresizingMaskIntoConstraints = false
rightView.backgroundColor = .grayColor()
let middleView = UIView()
middleView.translatesAutoresizingMaskIntoConstraints = false
middleView.backgroundColor = .lightGrayColor()
// add subview
parentView.addSubview(leftView)
parentView.addSubview(middleView)
parentView.addSubview(rightView)
// config constraints
leftView.leadingAnchor.constraintEqualToAnchor(parentView.leadingAnchor).active = true
leftView.topAnchor.constraintEqualToAnchor(parentView.topAnchor).active = true
leftView.heightAnchor.constraintEqualToConstant(60).active = true
leftView.widthAnchor.constraintEqualToConstant(60).active = true
rightView.trailingAnchor.constraintEqualToAnchor(parentView.trailingAnchor).active = true
rightView.topAnchor.constraintEqualToAnchor(parentView.topAnchor).active = true
rightView.heightAnchor.constraintEqualToConstant(60).active = true
rightView.widthAnchor.constraintEqualToConstant(60).active = true
middleView.leadingAnchor.constraintEqualToAnchor(leftView.trailingAnchor).active = true
middleView.trailingAnchor.constraintEqualToAnchor(rightView.trailingAnchor).active = true
middleView.topAnchor.constraintEqualToAnchor(parentView.topAnchor).active = true
middleView.bottomAnchor.constraintEqualToAnchor(parentView.bottomAnchor).active = true
XCPlaygroundPage.currentPage.liveView = parentView
try the following:尝试以下操作:
let bubbleView = UIView()
bubbleView.translatesAutoresizingMaskIntoConstraints = false
let logoImageView = UIImageView()
logoImageView.translatesAutoresizingMaskIntoConstraints = false
logoImageView.backgroundColor = .darkGrayColor()
bubbleView.addSubview(logoImageView)
let informationView = UIView()
informationView.translatesAutoresizingMaskIntoConstraints = false
informationView.backgroundColor = .lightGrayColor()
bubbleView.addSubview(informationView)
let discImageView = UIImageView()
discImageView.translatesAutoresizingMaskIntoConstraints = false
discImageView.backgroundColor = .darkGrayColor()
bubbleView.addSubview(discImageView)
let views = ["logoImageView": logoImageView, "informationView": informationView, "discImageView": discImageView]
bubbleView.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|[logoImageView(60)][informationView][discImageView(60)]|", options: [.AlignAllBottom, .AlignAllTop], metrics: nil, views: views))
bubbleView.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|[logoImageView(60)]|", options: [], metrics: nil, views: views))
// helper constraint so that the information view is at least two times the imageviews' width
bubbleView.addConstraint(NSLayoutConstraint(item: informationView, attribute: .Width, relatedBy: .GreaterThanOrEqual, toItem: logoImageView, attribute: .Width, multiplier: 2.0, constant: 0.0))
view.addSubview(bubbleView)
view.addConstraint(NSLayoutConstraint(item: bubbleView, attribute: .CenterX, relatedBy: .Equal, toItem: view, attribute: .CenterX, multiplier: 1.0, constant: 0.0))
view.addConstraint(NSLayoutConstraint(item: bubbleView, attribute: .CenterY, relatedBy: .Equal, toItem: view, attribute: .CenterY, multiplier: 1.0, constant: 0.0))
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