private void AddSearchButtonObserver(UISearchBar searchBar)
{
var controls = searchBar
.GetAllSubViews()
.OfType <UIControl>();
foreach (var control in controls)
{
control.AddObserver(this,
control.GetPropertyName(c => c.Enabled).ToLower(),
NSKeyValueObservingOptions.New, IntPtr.Zero);
}
}
private void RemoveSearchButtonObserver(UISearchBar searchBar)
{
var controls = searchBar
.GetAllSubViews()
.OfType <UIControl>();
foreach (var control in controls)
{
try
{
control.RemoveObserver(this,
control.GetPropertyName(c => c.Enabled).ToLower());
}
catch (MonoTouchException)
{
}
}
}
/// <summary>
/// Finds the Cancelbutton
/// </summary>
/// <returns></returns>
public static UIButton GetCancelButton(this UISearchBar searchBar)
{
//Look for a button, probably only one button, and that is probably the cancel button.
return(searchBar.GetAllSubViews().OfType <UIButton>().FirstOrDefault());
}