Question

Ok I am trying to connect a UIPickerView with a custom class. The idea is to have 3 picker views in one normal view.

1. So far I have created one view and bound it to my class TestView.h
2. Then I added a picker view to the view in the storyboard (iOS 5)

3. I then created a class for this picker view:

   @interface TestPickerView : UIPickerView <UIPickerViewDelegate, UIPickerViewDataSource> 
   {  
     NSArray *data;  
   }
   

4. Then tried to add a Property to my normal view (TestView.h)

   #import "TestPickerView.h"
   @interface TestView : UIViewController
     @property (strong, nonatomic) IBOutlet TestPickerView *myTestPicker;
   @end
   

But how do i bind the UIPickerView inside my normal view to this class/property?

I will in the end have 3 UIPickerView’s and my idea was to have 3 references in my UIViewController to control these UIPickerViews. That way I could set the data (datasource) using the properties once when the normal view is loading and then the PickerViews would just show. Hopefully i would also be able to get notified in my normal view when the value in one of the views occur.

Answer 1

Please call your TestView >> TestViewController instead, as it is a controller.

In your storyboard, select the PickerView and change it’s class name to TestPickerView.

After that just create your three IBOutlets and connect the PickerViews. That’s it.

// edit: To explain, how you distinguish between the pickers. Make 3 outlets, e.g.:

IBOutlet TestPickerView *picker1;
IBOutlet TestPickerView *picker2;
IBOutlet TestPickerView *picker3;

And than in your delegate method, check which picker did call the delegate, e.g.:

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
    if(pickerView == self.picker1)
    {
        // picker1
    }
    else if(pickerView == self.picker2)
    {
        // picker2
    }
    else
    {
        // picker3
    }
}