UIPicker selectRow and selectedRowInComponent

Hi,
I can't for the life of me figure out why once in a while the selectedRow in my picker decrements by one for no apparent (to me) reason. I am posting two screen shots each having the same 3 parts: the relevant code, the relevant local variables, and the output screen. In one screen shot (the desired case), the behavior is what I expect. In the other screen shot, doing the same thing only in a different area of my picker, the selectedRow is decremented by one. Please reference the last two line of the output screen. I really have no clue why it would do this. I tell it what row to select and then NSLog the selectedRow and it is not what I asked for. Any insight would be greatly appreciated.

This is my first forum post and it probably shows. I am not a real programmer and can't even claim self-taught...more like forum-taught as i would never be at it this as long as I have without all the forums help. The apple doc is good, but it seems like most of my problems are solved finding like issues in forums.

Thanks,
Laura

 

still confused

Thank you. Component1 is a dependent component, and I think I am updating its contents first before passing in the updated array each time i need to reset the picker. I am going to check that again. However, I am still confused why in any case if i select a row ("zero indexed number identifying a row in component") in the picker and then in the next line ask for the return value ("a zero-indexed number identifying the selected row") of the selectedRowInComponent from the same picker and component, then why would the component row and its index ever be different? I didn't change the picker at all between those 2 lines. Clearly, they can be different, but how?
Laura

 

I call the resetPickerForArray code from the method: - (void)pickerViewUIPickerView *)pickerView didSelectRowNSInteger)row inComponentNSInteger)component

Code:

    if (component == kStateComponent)
	{
		self.selectedState = [self.states objectAtIndex:row];
        self.stateDict = [self.clubDict objectForKey:self.selectedState];
        
        //refresh AgeGroups array for selected State
        NSArray *components1 = [stateDict allKeys];
        NSArray *sorted1 = [components1 sortedArrayUsingComparator:finderSort];
        self.ageGroups = sorted1;
        self.selectedOld = self.selectedAgeGroup;
        self.selectedAgeGroup = [self resetPickerForArray:self.ageGroups forComponent:kAgeGroupComponent];
        self.ageGroupDict = [self.stateDict objectForKey:self.selectedAgeGroup];

The actual problem i see is in the picker method that has "reusingView" in it. Sometimes not always, the view for component 1 (middle) seems to start with the wrong selectedRow and then continues to scroll beyond the 5 rows needed for the pickerView. I can't figure out why it does this only sometimes, and I thought it might be related to my original question though i am not even sure about that.

 

solved

The answer to my first question involved animated:YES. The second problem was because I should have reloaded the components first before i selected the row.