Swift NSLayout uneven alignment - ios

Question

I am trying to mess around with autolayout programmatically in Swift. However I have one problem. I want my view1 (red box) to have a the regular spaced alignment with the superview (H:|-[view1]-|)". This works for the right alignment but not the left. I want the left side of the view to have the same spacing as the right side. The view seems to want to align itself horizontally with the button below. Does anyone know how to fix this or what I am doing wrong?
override func viewDidLoad() {
super.viewDidLoad()
self.title = "yolo"
let frame = UIScreen.mainScreen().bounds
var b = UIButton.buttonWithType(UIButtonType.System) as! UIButton
b.frame = CGRectMake(frame.minX + 50, frame.minY + 100, frame.width * 0.8, frame.height * 0.2)
b.backgroundColor = UIColor.purpleColor()
b.addTarget(self, action: "buttonClicked:", forControlEvents: UIControlEvents.TouchUpInside)
b.layer.cornerRadius = 17
b.setTitle("hello", forState: UIControlState.Normal)
b.setTranslatesAutoresizingMaskIntoConstraints(false)
// Do any additional setup after loading the view, typically from a nib.
let view1 = UIView()
view1.setTranslatesAutoresizingMaskIntoConstraints(false)
view1.backgroundColor = UIColor.redColor()
let view2 = UIView()
view2.setTranslatesAutoresizingMaskIntoConstraints(false)
view2.backgroundColor = UIColor.yellowColor()
self.view.addSubview(b)
self.view.addSubview(view1)
// dictionary for views
let viewsDictionary = ["view1":view1,"view2":view2, "b":b]
let button_constraint_H:Array = NSLayoutConstraint.constraintsWithVisualFormat("H:[b(>=200)]", options: NSLayoutFormatOptions(0), metrics: nil, views: viewsDictionary)
let button_constraint_V:Array = NSLayoutConstraint.constraintsWithVisualFormat("V:[b(>=200)]", options: NSLayoutFormatOptions(0), metrics: nil, views: viewsDictionary)
b.addConstraints(button_constraint_H as [AnyObject])
b.addConstraints(button_constraint_V as [AnyObject])
//view1
let view1_constraint_H:Array = NSLayoutConstraint.constraintsWithVisualFormat("H:[view1(50)]", options: NSLayoutFormatOptions(0), metrics: nil, views: viewsDictionary)
let view1_constraint_V:Array = NSLayoutConstraint.constraintsWithVisualFormat("V:[view1(50)]", options: NSLayoutFormatOptions(0), metrics: nil, views: viewsDictionary)
view1.addConstraints(view1_constraint_H as [AnyObject])
view1.addConstraints(view1_constraint_V as [AnyObject])
let view_constraint_H:NSArray = NSLayoutConstraint.constraintsWithVisualFormat("H:|-[view1]-|", options: NSLayoutFormatOptions(0), metrics: nil, views: viewsDictionary)
let view_constraint_V:NSArray = NSLayoutConstraint.constraintsWithVisualFormat("V:|-90-[view1]-[b]-0-|", options: NSLayoutFormatOptions.AlignAllLeading, metrics: nil, views: viewsDictionary)
let view_constraint_H2:NSArray = NSLayoutConstraint.constraintsWithVisualFormat("H:|[b]|", options: NSLayoutFormatOptions(0), metrics: nil, views: viewsDictionary)
view.addConstraints(view_constraint_H2 as [AnyObject])
view.addConstraints(view_constraint_V as [AnyObject])
view.addConstraints(view_constraint_H as [AnyObject])
}

Answer 1

The problem is that your constraints make no sense. You are saying this:
"H:[view1(50)]"
"H:|-[view1]-|"
So on the one hand you want view1 to be aligned with the margins of its superview (this is what - means), but on the other hand you want view1 to be exactly 50 points wide (that is what (50) means). You can't have both!