title: Reload data into UIPickerView
body: <p>i need to refresh the data in the UIPickerView.
  i'm using </p>
  
  <pre><code>[pickerView reloadAllComponents];
  </code></pre>
  
  <p>but my problem is that i need to reset the selected row as well, i want the selected row to go back to index 0, at the moment it is staying at the same index as it was before calling the reloadAllComponents function</p>
  
  <p>can anyone help please??</p>