title: How to set restriction for timePicker
body: <p>Here am using timePicker through UIDatePickerMode.time</p>
  
  <p><a href="https://i.stack.imgur.com/iHulm.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/iHulm.png" alt="enter image description here"></a></p>
  
  <p>Now, here my current time is 3:13 PM, but in time picker I want to show 30 minutes from now I.e., 3:43 PM  that means user can select time from 3: 43 PM onwards only.  how should I achieve this ?</p>
  
  <p>This is the code which I tried
  I tried by giving <code>timePicker?.minimumDate</code>. But it didn't work</p>
  
  <pre><code>    func timePicking(){
                      let timePicker = ActionSheetDatePicker(title: "Time", datePickerMode: UIDatePickerMode.time, selectedDate: NSDate() as Date!, target: self, action: #selector(self.timeSelected), origin: (sender as AnyObject).superview!?.superview)
                      let minimumTimeRestrict: TimeInterval = 0 * 30 * 60 * 60
                      timePicker?.minimumDate = NSDate(timeInterval: -minimumTimeRestrict, since: NSDate() as Date) as Date!
                      timePicker?.show()
  }
  </code></pre>