ios snapkit

var redView      = UIView()
var yellowView   = UIView()
var greenView    = UIView()
var blackView    = UIView()
var purpleView   = UIView()
var cyanView     = UIView()
var grayViewBtn  = UIButton()
var leftView     = UIView()
var rightView    = UIView()

redView.backgroundColor = UIColor.redColor()
yellowView.backgroundColor = UIColor.yellowColor()
greenView.backgroundColor = UIColor.greenColor()
blackView.backgroundColor = UIColor.blackColor()
purpleView.backgroundColor = UIColor.purpleColor()
cyanView.backgroundColor = UIColor.cyanColor()
grayViewBtn.backgroundColor = UIColor.grayColor()
leftView.backgroundColor = UIColor.cyanColor()
rightView.backgroundColor = UIColor.orangeColor()
view.addSubview(redView)
view.addSubview(yellowView)
view.addSubview(greenView)
view.addSubview(blackView)
view.addSubview(purpleView)
view.addSubview(cyanView)
view.addSubview(grayViewBtn)
view.addSubview(leftView)
view.addSubview(rightView)
grayViewBtn.setTitle("PopLabel", forState: UIControlState.Normal)
grayViewBtn.addTarget(self, action: 
// 进行约束
blackView.snp_makeConstraints { make in
make.center.equalTo(view)
make.size.equalTo(CGSizeMake(100.0, 100.0))
}
redView.snp_makeConstraints { make in
make.top.equalTo(blackView.snp_bottom).offset(20.0)
make.left.equalTo(20.0)
make.size.equalTo(CGSizeMake(100.0, 100.0))
}
yellowView.snp_makeConstraints { make in
make.top.equalTo(blackView.snp_bottom).offset(20.0)
make.left.equalTo(blackView.snp_right).offset(20.0)
make.size.equalTo(CGSizeMake(100.0, 100.0))
}
purpleView.snp_makeConstraints { make in
make.bottom.equalTo(blackView.snp_top).offset(-20.0)
make.left.equalTo(blackView.snp_right).offset(20.0)
make.size.equalTo(CGSizeMake(100.0, 100.0))
}
greenView.snp_makeConstraints { make in
make.bottom.equalTo(blackView.snp_top).offset(-20.0)
make.right.equalTo(blackView.snp_left).offset(-20.0)
make.size.equalTo(CGSizeMake(100.0, 100.0))
}
// cyan
cyanView.snp_makeConstraints(closure: { (make) in
make.top.equalTo(redView.snp_bottom).offset(20.0)
make.centerX.equalTo(view)
make.size.equalTo(CGSizeMake(100.0, 100.0))
})
// gray
grayViewBtn.snp_makeConstraints(closure: { (make) in
make.bottom.equalTo(greenView.snp_top).offset(-20.0)
make.centerX.equalTo(view)
make.size.equalTo(CGSizeMake(100.0, 100.0))
})
//
leftView.snp_makeConstraints(closure: { (make) in
make.top.equalTo(greenView.snp_bottom).offset(20.0)
make.bottom.equalTo(redView.snp_top).offset(-20.0)
make.left.equalTo(view.snp_left).offset(5)
make.width.equalTo(50)
})
rightView.snp_makeConstraints(closure: { (make) in
make.top.equalTo(purpleView.snp_bottom).offset(20.0)
make.bottom.equalTo(yellowView.snp_top).offset(-20.0)
make.right.equalTo(view.snp_right).offset(-5)
make.width.equalTo(leftView)
})