How to get the row number of the selected value of UIPickerView

Question

I have a UIPickerView in my viewController. I can get the value of the row number of the selected value in the picker from the delegate method

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component

But in my case, I need to get the row number of the selected component as soon as the view appears. Is there a way to get the row number/trigger the delegate method as soon as the view appears.

Answer 1

You just have to use selectedRowInComponent

selectedRowInComponent:

Returns the index of the selected row in a given component. - (NSInteger)selectedRowInComponent:(NSInteger)component Parameters

component

 A zero-indexed number identifying a component of the picker view. 

Return Value

A zero-indexed number identifying the selected row, or -1 if no row is selected. Availability

 Available in iOS 2.0 and later. 

See Also

 – selectRow:inComponent:animated: 

Related Sample Code

 iPhoneCoreDataRecipes 

Declared In UIPickerView.h

Answer 2

you use this for select in pickerview

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
   {
      NSString *str= [yardsArray objectAtIndex:row];

   }

use this code when view will load

 -(void)ViewDidLoad
  {
   NSString *str= [yardsArray count];
  }

Answer 3

in viewDidLoad

travers the array of your objects and match object of which you want to find out the row and tell me if this is the solution