multipliedBy意思
乘以
需求
某个View（该view的宽度是不确定的）上横向有两个子View，要求：
- 两个子View的间距是10
- 左侧子View的宽度和右侧子View宽度比是2:1
- 左侧子View的宽高比是2:1
- 左侧子View的左、上、下和其父View对齐
- 右侧子View的右、上、下和其父View对齐
效果图
0.multiplied.jpg
实现代码
// 父view
let superView = UIView()
superView.backgroundColor = .yellow
view.addSubview(superView)
superView.snp.makeConstraints { make in
make.left.right.equalToSuperview()
make.top.equalToSuperview().offset(100)
}
// 左侧子view
let leftView = UIView()
leftView.backgroundColor = .red
superView.addSubview(leftView)
leftView.snp.makeConstraints { make in
make.left.top.bottom.equalToSuperview()
make.height.equalTo(leftView.snp.width).multipliedBy(1.0/2.0)
}
// 右侧子view
let rightView = UIView()
rightView.backgroundColor = .red
superView.addSubview(rightView)
rightView.snp.makeConstraints { make in
make.right.top.bottom.equalToSuperview()
make.left.equalTo(leftView.snp.right).offset(10)
make.width.equalTo(leftView.snp.width).multipliedBy(1.0/2.0)
}
