Question

This is my code for two pickerviews in one view controller. However its not working for me.

#pragma mark UIPickerViewDelegate methods
    //PickerViewController.m
    - (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)thePickerView {
        return 1;
    }

    - (NSInteger)pickerView:(UIPickerView *)thePickerView numberOfRowsInComponent:(NSInteger)component {

        switch ([thePickerView tag]) {
            case 1: //purpose picker        
                return [m_arrPurpose count];            
            case 2:  //second picker
                return [m_arrSweep count];
            default:
                return 0;
                break;
        } 
    }

    - (NSString *)pickerView:(UIPickerView *)thePickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {

        switch ([thePickerView tag]) {
            case 1: //purpose picker
            {
                //cost.text = @"Test";
                Purpose *prp = [m_arrPurpose objectAtIndex:row];
                return [prp m_purposeName];     
            }       
            case 2:  //second picker
            {
                OpenActivity *opn = [m_arrSweep objectAtIndex:row];
                return [opn m_ahhaName];
            }
            default:
                return @"";
                break;
        }
}

can any1 help me with this please..
thanks

Answer 1

It sounds like either your tags aren’t set correctly or you havent connected the datasource and delegate methods for both pickers.

Add some NSLog statements in the numberOfRowsInComponent and titleForRow: methods.

Include the picker view object and the picker view’s tag in the log, e.g.

NSLog(@"Rows in component for %@, tag %d",thePickerView,[thePickerView tag]);

And a different text in the titleForRow.

You should see two different objects – if not, your delegate and datasource are not connected. You should see tags 1 and 2 – if not, your tags are not set properly.