使用自动布局的自定义视图的动态高度

Question

Actually I am implementing a custom info window in Google Map, I add it with this lines:

    //MARK: GMSMapViewDelegate
func mapView(mapView: GMSMapView!, markerInfoWindow marker: GMSMarker!) -> UIView! {
    let infoView : SpMapInfoWindowView = SpMapInfoWindowView.loadFromNibNamed("SpMapInfoWindowView") as! SpMapInfoWindowView;
    infoView.lblLocationName.text = LONG_TEXT;
    return infoView;
}

And my xib layout setting is as following: Auto layout part:

I want the infowindow's height would increase if the text becomes longer. I've tried a lot with the constraints' priority but the UILabel's height fail to be changed.

What do I miss?

Edited 2015-07-02

After trying lots of priority and compression resistance, the label would resize but not the superview

Answer 1

set numberOfLines of your uilabel to 0. (in IB - 'Lines' property)

Also, try to calculate height of your label programmatically

label.numberOfLines = 0
label.lineBreakMode = NSLineBreakMode.ByWordWrapping
label.font = font
label.text = text

label.sizeToFit()

And then set size of your container as label.frame.height + your_margins