   
   private func buildMiddleView() {
     backView.backgroundColor = backColor
-//    backView.alpha = 1
     backView.layer.cornerRadius = 15
     
     imageView.removeFromSuperview()

  
  static let sharedView = HUD()
  
  var GCDLock = false
  
  let backView = UIView()

    if GCDLock { return }
    // 计算文本
    calculateSize(string: string)
    
    /// 设置图片
    func setImage(name: String) {
