是否可以同时为UIPickerView和UITableview设置动画

Question

So currently I have UITableViewController that contains both a UITableView and an UIPickerView. The user can select how to filter the data in the table by using the picker. Currently, when the user scrolls over a row in the picker, the table is updated, this is how I accomplished this:

func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {

  // Code to update table data...

  self.tableView.reloadSections(NSIndexSet(index: 0), withRowAnimation:UITableViewRowAnimation.Automatic)
  self.tableView.endUpdates()
  return title
}

Unfortunately, the table does not animate when reloadSections() is called. My guess is that this is because I can't animate scrolling the picker and reloading the table at the same time.

How would I go about animating both at the same time? Thanks.

Answer 1

Basically, I think it could work fine. I was using a snippet like this once, too and it didn't work either. As I recall I solved it by dragging an outlet of the UITableView to the ViewController and then calling

 @IBOutlet weak var myTableView: UITableView?

    ...


func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {

  // Code to update table data...

  self.myTableView.reloadSections(NSIndexSet(index: 0), withRowAnimation:UITableViewRowAnimation.Automatic)
  self.myTableView.endUpdates()
  return title
}

...since self.tableView does not explicitly reference the UITableView you want it to reference. To check if it actually does - have you tried replacing

self.tableView.reloadSections(NSIndexSet(index: 0), withRowAnimation:UITableViewRowAnimation.Automatic)

with

self.tableView.reloadData()

?

Even if it possibly won't solve your problem, I hope this helps.