Why is my UIPickerView not animating like it should be? - objective-c

Question

so this is basically like a slot machine type thing, very basic, but the problem Im having is that when you click the spin button the movement of the components is not animated, even though i have sent the animated argument a YES BOOL. I have no idea what I am doing wrong, any help would be appreciated.
Nick
ps download the entire project here: http://files.me.com/knyck2/dcca9y
//
// CustomPickerViewController.m
// Pickers
//
// Created by Nicholas Iannone on 1/29/10.
// Copyright 2010 Apple Inc. All rights reserved.
//
#import "CustomPickerViewController.h"
#implementation CustomPickerViewController
#synthesize column1, column2, column3, column4, column5, picker, winLabel;
-(IBAction) spin : (id) sender {
NSLog(#"even got here");
BOOL win = NO;
int numInRow = 1;
int lastVal = -1;
for (int i = 0; 1 < 5; i++) {
int newValue = random() % [self.column1 count];
if (newValue == lastVal) {
NSLog(#"even got here");
numInRow++;
}
else
numInRow = 1;
lastVal = newValue;
[picker selectRow:newValue inComponent:i animated:YES];
[picker reloadComponent:i];
if (numInRow >= 3)
win = YES;
NSLog(#"even got here");
}
if (win)
winLabel.text = #"winner!";
else {
winLabel.text = #"";
NSLog(#"even got here");
}
}
/*
// The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
// Custom initialization
}
return self;
}
*/
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
UIImage *seven = [UIImage imageNamed:#"seven.png"];
UIImage *bar = [UIImage imageNamed:#"bar.png"];
UIImage *crown = [UIImage imageNamed:#"crown.png"];
UIImage *cherry = [UIImage imageNamed:#"cherry.png"];
UIImage *lemon = [UIImage imageNamed:#"lemon.png"];
UIImage *apple = [UIImage imageNamed:#"apple.png"];
for (int i = 1; i <= 5 ; i++) {
UIImageView *sevenView = [[UIImageView alloc] initWithImage: seven];
UIImageView *barView = [[UIImageView alloc] initWithImage: bar];
UIImageView *crownView = [[UIImageView alloc] initWithImage: crown];
UIImageView *cherryView = [[UIImageView alloc] initWithImage: cherry];
UIImageView *lemonView = [[UIImageView alloc] initWithImage: lemon];
UIImageView *appleView = [[UIImageView alloc] initWithImage: apple];
NSArray *imageViewArray = [[NSArray alloc] initWithObjects: sevenView, barView, crownView, cherryView, lemonView, appleView, nil];
NSString *fieldName =[[NSString alloc] initWithFormat:#"column%d", i];
[self setValue:imageViewArray forKey:fieldName];
[fieldName release];
[imageViewArray release];
[sevenView release];
[crownView release];
[barView release];
[cherryView release];
[lemonView release];
[appleView release];
}
srandom(time(NULL));
[super viewDidLoad];
}
/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[picker release];
[winLabel release];
[column1 release];
[column2 release];
[column3 release];
[column4 release];
[column5 release];
[super dealloc];
}
#pragma mark -
#pragma mark Picker Data Source Methods
-(NSInteger) numberOfComponentsInPickerView: (UIPickerView *) pickerView {
return 5;
}
-(NSInteger) pickerView: (UIPickerView *) pickerView numberOfRowsInComponent: (NSInteger) component {
return [self.column1 count];
}
#pragma mark Picker Delegate Methods
-(UIView *) pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent: (NSInteger) component reusingView : (UIView *)view {
NSString *arrayName = [[NSString alloc] initWithFormat:#"column%d", component + 1];
NSArray *array = [self valueForKey:arrayName];
NSLog(#"got here yo");
return [array objectAtIndex: row];
NSLog(#"holyshit");
}
#end

Answer 1

I went back and compared my code to the book that this project is listed in and I noticed that my code would perform as expected (with animation) if I were to build into a 3.1.2 sdk and iphone sim. So something in the new xcode is skanking the animation, at least that is the way it appears.

Answer 2

It's probably not animating because you do [picker reloadComponent:i] right after selecting a row with animation. Reloading probably causes any animation to stop, and shouldn't be necessary since you're not actually changing the contents of the picker.