UILabel *attributionLabel = [mapView.subviews objectAtIndex:1];
attributionLabel.center = CGPointMake(attributionLabel.center.x, attributionLabel.center.y - 44.0f);

mapView.layoutMargins = UIEdgeInsetsMake(top, right, -20, left)

UILabel *attributionLabel = [mapView.subviews objectAtIndex:1];
    attributionLabel.center = CGPointMake(attributionLabel.center.x, attributionLabel.center.y - 44.0f);

UILabel *attributionLabel = [mapView.subviews objectAtIndex:1];
    attributionLabel.frame = CGRectMake(20, self.view.frame.size.height - 135, attributionLabel.frame.size.width, attributionLabel.frame.size.height);
\135 is height of your bottom view that was hiding legal

// reposition the 'Legal' label above the transparent bottom bar
// unfortunately there is no safe way to identify the label but it is the last subview - hopefully this will not change 😱
if let legalLabel = mapView.subviews.last {
    var frame = legalLabel.frame
    frame.origin.y = frame.origin.y - self.bottomBar.bounds.size.height // reposition it above the bottom bar
    legalLabel.frame = frame
}

import MapKit

extension MKMapView {

  /// Workaround for layoutMargins bug.
  func setLegalInsets(left: CGFloat, bottom: CGFloat) {
    let oldLeft = layoutMargins.left
    let oldBottom = layoutMargins.bottom

    let lblLegal = (subviews.filter { view in
      return view is UILabel
      }).first

    lblLegal?.frame.origin.x += left - oldLeft
    lblLegal?.frame.origin.y -= bottom - oldBottom

    layoutMargins.left = left
    layoutMargins.bottom = bottom
  }
}

override func viewWillLayoutSubviews() {
    positionLegalMapLabel()
}

func positionLegalMapLabel() {
    let legalMapLabel = self.mapView.subviews[1]

    legalMapLabel.frame.origin = CGPointMake(self.mapView.bounds.size.width - legalMapLabel.frame.size.width - 7, legalMapLabel.frame.origin.y)
}

override func viewWillLayoutSubviews() {
    positionLegalMapLabel()
}

func positionLegalMapLabel() {
    if self.mapView.subviews.count > 1 {
        let legalMapLabel = self.mapView.subviews[1]

        legalMapLabel.frame.origin = CGPointMake(self.mapView.bounds.size.width - legalMapLabel.frame.size.width - 7, legalMapLabel.frame.origin.y)
    }
}