title: UICollectionViewCell unselected
body: <p>When I select cell, is selected, and when I select another cell is selected and unselected previous cell, OK</p>
  
  <p>So I want when I click on selected cell I want to unselected same cell</p>
  
  <p>I use this code</p>
  
  <pre><code>override var selected: Bool {
         get {
              return super.selected
          }
          set {
              if newValue {
                  super.selected = true
                  self.shadowView.backgroundColor = UIColor(hexString: "EEEEEE")
              } else if newValue == false {
                  super.selected = false
                  self.shadowView.backgroundColor = UIColor.whiteColor()
              }
          }
      }
  
  
  }
  </code></pre>