pickerview selectedRowInComponent always returning 0 - iphone

Question

I am using selectedRowInComponent method to get the presently selected row on component with index 0 but it is always returning 0. I have checked it in
NSLog("%d",[pickerview selectedRowInComponent:0]);
I have initialized the picker as I am using picker view programmatically. Please Suggest.

Answer 1

I hope this code will help you.I am using it in my project its working perfect.
Call this function it ViewDidLoad
[self loadFirstPicker];
Below is function to make UIpicker which shows only time. (And Save in text feild)
-(void)loadFirstPicker
{
UIDatePicker *picker = [[UIDatePicker alloc] init];
picker.autoresizingMask = UIViewAutoresizingFlexibleWidth;
picker.datePickerMode = UIDatePickerModeTime;
[picker addTarget:self action:#selector(dueDateChanged:) forControlEvents:UIControlEventValueChanged];
CGSize pickerSize = [picker sizeThatFits:CGSizeZero];
picker.frame = CGRectMake(0.0, 250, pickerSize.width, 460);
picker.backgroundColor = [UIColor blackColor];
checkEveryTextFeild.inputView = picker;
//[self.view addSubview:picker];
//[picker release];
// Create done button in UIPickerView
UIToolbar* mypickerToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 220, 56)];
mypickerToolbar.barStyle = UIBarStyleBlackOpaque;
[mypickerToolbar sizeToFit];
NSMutableArray *barItems = [[NSMutableArray alloc] init];
UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
[barItems addObject:flexSpace];
UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:#selector(pickerDoneClicked)];
[barItems addObject:doneBtn];
[mypickerToolbar setItems:barItems animated:YES];
checkEveryTextFeild.inputAccessoryView = mypickerToolbar;
}
This Function getting the time from picker and setting it to textFeild
-(void) dueDateChanged:(UIDatePicker *)sender {
NSDateFormatter* dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:#"HH:mm:ss"];
//[dateFormatter setTimeStyle:NSDateFormatterNoStyle];
checkEveryTextFeild.text = [dateFormatter stringFromDate:[sender date]];
NSDate *currentDate = [NSDate date];
NSLog(#"%#",currentDate);
NSLog(#"Picked the date %#", [dateFormatter stringFromDate:[sender date]]);
}

Answer 2

you might want to try setting both of them. the second line will retrieve the pickerview that the class detects:
[filterPicker selectRow:selectedPickerIndex inComponent:0 animated:NO];
[self pickerView:filterPicker didSelectRow:selectedPickerIndex inComponent:0];
self.personInfoPicker.delegate = self;
self.personInfoPicker.dataSource = self;
[self.personInfoPicker reloadAllComponents];