KentarouKanno/UIBarButtonItem.md

## UIBarButtonItem.md

      
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              UIBarButtonItem.md
            
          
    UIBarButtonItem

★ Navigationの戻るボタンを設定する
// 文字列のボタンを生成
let leftBarbuttnoItem = UIBarButtonItem(title: "戻る", style: .Plain, target: self, action: #selector(NextViewController.backAction(_:)))
self.navigationItem.leftBarButtonItem = leftBarbuttnoItem

// ボタン押下時のアクション
func backAction(sender: UIBarButtonItem)  {
    self.navigationController?.popViewControllerAnimated(true)
}
★ UIBarButtonItemStyle
public enum UIBarButtonItemStyle : Int {
    case Plain
    case Done
}