피커 (Picker) 사용 시 유의점
일반적으로 인어페이스 빌더에서 컨트롤을 선택하다 컨텐츠 뷰에 놓고 설정하는 일반적인 방식으로는
피커를 사용할 수 없음.
피커를 사용하기 위해서는 '피커 델리게이트(Picker delegate)'와 '피커 데이터소스(Picker dataSource'를 사용하여야 함.
- Picker에서의 delegate의 역할 : 각 행과 각 해당 행에 속한 컴포넌트 중에서 실제로 무엇을 그릴 지 결정
피커는 델리게이터에게 문자열(NSString) 또는 주어진 컴포넌트의 특정 위치에 내용을 그리기 위한 뷰(NSView)를 요청
- Picker에서의 dataSource의 역할 : 데이터 소스는 피커에게 몇 개의 목록이 각각의 컴포넌트를 구성하고 있는 지
알려줌. 데이터 소스는 델리게이트와 유사한 방법으로 동작하지만, 메서드가 미리 정해진 시각에 호출된다는 점이 틀림.
MVC(Model-View-Controller) model에서 데이터 소스의 본래 역할은 모델로 부터 데이터를 받아서 피커에게 넘겨주는 것.
다섯개의 피커뷰를 가진 어플 제작
2. 최상위 뷰 컨트롤러 추가하기
//
// PickersAppDelegate.h
// Pickers
//
// Created by Park sungsoo on 3/24/10.
// Copyright home 2010. All rights reserved.
//
#import! <UIKit/UIKit.h>
@interface PickersAppDelegate : NSObject <UIApplicationDelegate> {
UIWindow *window;
UITabBarController *rootController; // 추가된 root controller
}
@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) IBOutlet UITabBarController *rootController;
@end
//
// PickersAppDelegate.m
// Pickers
//
// Created by Park sungsoo on 3/24/10.
// Copyright home 2010. All rights reserved.
//
#import! "PickersAppDelegate.h"
@implementation PickersAppDelegate
@synthesize window;
@synthesize rootController;
- (void)applicationDidFinishLaunching:(UIApplication *)application {
// Override point for customization after application launch
[window addSubview:rootController.view];
[window makeKeyAndVisible];
}
- (void)dealloc {
[rootController release];
[window release];
[super dealloc];
}
@end
3. 메인 텝바 설정 : MainWindws.xlb 편집.
//
// DataPickerViewController.h
// Pickers
//
// Created by Park sungsoo on 3/24/10.
// Copyright 2010 home. All rights reserved.
//
#import! <UIKit/UIKit.h>
@interface DataPickerViewController : UIViewController {
UIDatePicker *datePicker;
UIButton *selectButton;
}
@property (nonatomic, retain) IBOutlet UIDatePicker *datePicker;
@property (nonatomic, retain) IBOutlet UIButton *selectButton;
-(IBAction)buttonPressed;
@end
//
// DataPickerViewController.m
// Pickers
//
// Created by Park sungsoo on 3/24/10.
// Copyright 2010 home. All rights reserved.
//
#import! "DataPickerViewController.h"
@implementation DataPickerViewController
@synthesize datePicker;
@synthesize selectButton;
/*
// 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 {
[super viewDidLoad];
// 버튼에 이미지 깔기
UIImage *buttonImageNormal = [UIImage imageNamed:@"whiteButton.png"];
UIImage *stertchableButtonImageNormal = [buttonImageNormal stretchableImageWithLeftCapWidth:12 topCapHeight:0];
[selectButton setBackgroundImage:stertchableButtonImageNormal forState:UIControlStateNormal];
[buttonImageNormal release];
[stertchableButtonImageNormal release];
// 현재 시각 가져와서 data picker에 적용하기
[NSDate *now = [[NSDate alloc] init];
[datePicker setDate:now animated:NO];
[now release];
}
/*
// 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 {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
self.datePicker = nil;
[super viewDidUnload];
}
- (void)dealloc {
[datePicker release];
[super dealloc];
}
- (IBAction)buttonPressed
{
NSDate *selected = [datePicker date];
NSString *message = [[NSString alloc] initWithFormat:@"The date and time you selected is : %@", selected];
UIAlert!View *alert! = [[UIAlert!View alloc]
initWithTitle:@"Date and Time Selected"
message:message
delegate:nil
cancelButtonTitle:@"Yes, I did."
otherButtonTitles:nil];
[alert! show];
[alert! release];
[message release];
}
@end
//
// SingleComponentPickerViewController.h
// Pickers
//
// Created by Park sungsoo on 3/24/10.
// Copyright 2010 home. All rights reserved.
//
#import! <UIKit/UIKit.h>
@interface SingleComponentPickerViewController : UIViewController
<UIPickerViewDelegate, UIPickerViewDataSource> {
UIPickerView *singlePicker;
NSArray *pickerData;
UIButton *selectButton;
UIImage *buttonImageNormal;
UIImage *stertchableButtonImageNormal;
}
@property (nonatomic, retain) IBOutlet UIPickerView *singlePicker;
@property (nonatomic, retain) NSArray *pickerData;
@property (nonatomic, retain) IBOutlet UIButton *selectButton;
- (IBAction)buttonPressed;
@end
//
// SingleComponentPickerViewController.m
// Pickers
//
// Created by Park sungsoo on 3/24/10.
// Copyright 2010 home. All rights reserved.
//
#import! "SingleComponentPickerViewController.h"
@implementation SingleComponentPickerViewController
@synthesize singlePicker;
@synthesize pickerData;
@synthesize selectButton;
- (IBAction)buttonPressed
{
NSInteger row = [singlePicker selectedRowInComponent:0]; //현재 선택된 row를 return
// NSInteger는 32/64 비트 모두 적용 가능.
// * (asterrisk)가 없는 것에 유의
NSString *selected = [pickerData objectAtIndex:row];
NSString *title = [[NSString alloc] initWithFormat:@"You selected %@!", selected];
UIAlert!View *alert! = [[UIAlert!View alloc]
initWithTitle:title
message:@"Thank you for choosing"
delegate:nil
cancelButtonTitle:@"You're Walcome"
otherButtonTitles:nil];
[alert! show];
[alert! release];
[title release];
}
/*
// 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 {
[super viewDidLoad];
// 버튼 이미지 깔기
buttonImageNormal = [UIImage imageNamed:@"whiteButton.png"];
stertchableButtonImageNormal = [buttonImageNormal stretchableImageWithLeftCapWidth:12 topCapHeight:0];
[selectButton setBackgroundImage:stertchableButtonImageNormal forState:UIControlStateNormal];
// picker에 data array 정의해서 넣기
NSArray *array = [[NSArray alloc]
initWithObjects: @"서울", @"부산", @"대구", @"안동", @"구미", @"목포", @"대전",
@"경주", @"울산", @"전주", @"삼천포", @"영월", @"강릉", @"인천", nil];
self.pickerData = array;
// 최초 display 시 다섯 번 째 row를 가리키도록 함.
[singlePicker selectRow:5 inComponent:0 animated:TRUE];
[array release];
}
/*
// 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 {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
self.singlePicker = nil;
self.pickerData = nil;
[super viewDidUnload];
}
- (void)dealloc {
[singlePicker release];
[pickerData release];
[buttonImageNormal release];
[stertchableButtonImageNormal release];
[super dealloc];
}
Xcode상에서 메소드 목록을 보다 일목요연하게 볼 수 있도록 해주는 지시자
사용법 ㅣ
#progma mark (label)
(example)
#pragma mark set methods
:
#pragma mark get methods
:
#pragma mark - (label을 - 로 주면 구분선으로 메소드 목록이 나뉘어 짐)
#pragma mark -
#pragma mark Picker Data Source Methods
// picker가 얼마나 많은 컴포넌트를 표시해야 할 지 물어보는 메서드
// 피커가 하나 이상의 회전판 또는 컴포넌트를 가질 수 있을 경우를 위함.
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1;
}
// picker에게 해당 컴포넌트에 몇 개의 행이 있는 지 물어보는 메서드
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
return [pickerData count];
}
#pragma mark Picker Delegate Methods
// 특정 컴포넌트에서 특정 행에 대한 자료를 제공하도록 요청
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row
forComponent:(NSInteger)compoment
{
return [pickerData objectAtIndex:row];
}
@end
//
// DoubleComponentPickerViewController.h
// Pickers
//
// Created by Park sungsoo on 3/24/10.
// Copyright 2010 home. All rights reserved.
//
#import! <UIKit/UIKit.h>
#define kFillingComponent 0
#define kBreadComponent 1
@interface DoubleComponentPickerViewController : UIViewController
<UIPickerViewDelegate, UIPickerViewDataSource>
{
UIPickerView *doublePicker;
NSArray *fillingTypes;
NSArray *breadTypes;
UIButton *selectButton;
}
@property (nonatomic, retain) IBOutlet UIPickerView *doublePicker;
@property (nonatomic, retain) NSArray *fillingTypes;
@property (nonatomic, retain) NSArray *breadTypes;
@property (nonatomic, retain) IBOutlet UIButton* selectButton;
- (IBAction)buttonPressed;
@end
//
// DoubleComponentPickerViewController.m
// Pickers
//
// Created by Park sungsoo on 3/24/10.
// Copyright 2010 home. All rights reserved.
//
#import! "DoubleComponentPickerViewController.h"
@implementation DoubleComponentPickerViewController
@synthesize doublePicker;
@synthesize fillingTypes;
@synthesize breadTypes;
@synthesize selectButton;
-(IBAction)buttonPressed
{
NSInteger breadRow = [doublePicker selectedRowInComponent:kBreadComponent];
NSInteger fillingRow = [doublePicker selectedRowInComponent:kFillingComponent];
NSString *bread = [breadTypes objectAtIndex:breadRow];
NSString *filling = [fillingTypes objectAtIndex:fillingRow];
NSString *message = [[NSString alloc] initWithFormat:@"Your %@ on %@ bread will be right up", filling, bread];
UIAlert!View *alert! = [[UIAlert!View alloc] initWithTitle:@"Thank you for you order"
message:message
delegate:nil
cancelButtonTitle:@"Great!"
otherButtonTitles:nil];
[alert! show];
[alert! release];
[message release];
}
/*
// 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 {
[super viewDidLoad];
// 피커에 데이터 올리기
NSArray *breadArray = [[NSArray alloc] initWithObjects:
@"White", @"Whole Wheat", @"Rye", @"Sourdough", @"Seven Grain", nil];
self.breadTypes = breadArray;
NSArray *fillingArray = [[NSArray alloc] initWithObjects:
@"Ham", @"Turkey", @"Peanut Butter", @"Tuan Salad", @"Chicken Salad",
@"Roast Beef", @"Vegemitet", nil];
self.fillingTypes = fillingArray;
[fillingArray release];
}
/*
// 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 {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
self.doublePicker = nil;
self.breadTypes = nil;
self.fillingTypes = nil;
self.selectButton = nil;
[super viewDidUnload];
}
- (void)dealloc {
[doublePicker release];
[breadTypes release];
[fillingTypes release];
[selectButton release];
[super dealloc];
}
#pragma mark -
#pragma mark Picker Data Methods
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 2; //
}
- (NSInteger)pickerView:(UIPickerView *)pickerView
numberOfRowsInComponent:(NSInteger)component
{
if(component == kBreadComponent)
{
return [self.breadTypes count];
}
return [self.fillingTypes count];
}
# pragma mark Picker Delegate Methods
- (NSString *)pickerView:(UIPickerView *)pickerView
titleForRow:(NSInteger)row
forComponent:(NSInteger)component
{
if(component == kBreadComponent)
{
return [self.breadTypes objectAtIndex:row];
}
return [self.fillingTypes objectAtIndex:row];
}
@end
//
// DependentComponentPickerViewController.h
// Pickers
//
// Created by Park sungsoo on 3/24/10.
// Copyright 2010 home. All rights reserved.
//
#import! <UIKit/UIKit.h>
#define kStateComponent 0
#define kZipComponent 1
@interface DependentComponentPickerViewController : UIViewController
<UIPickerViewDelegate, UIPickerViewDataSource>
{
UIPickerView *picker;
NSDictionary *stateZips;
NSArray *states;
NSArray *zips;
}
@property (nonatomic, retain) IBOutlet UIPickerView *picker;
@property (nonatomic, retain) NSDictionary *stateZips;
@property (nonatomic, retain) NSArray *states;
@property (nonatomic, retain) NSArray *zips;
-(IBAction)buttonPressed;
@end
//
// DependentComponentPickerViewController.m
// Pickers
//
// Created by Park sungsoo on 3/24/10.
// Copyright 2010 home. All rights reserved.
//
#import! "DependentComponentPickerViewController.h"
@implementation DependentComponentPickerViewController
@synthesize picker;
@synthesize stateZips;
@synthesize states;
@synthesize zips;
-(IBAction)buttonPressed
{
NSInteger stateRow = [picker selectedRowInComponent:kStateComponent];
NSInteger zipRow = [picker selectedRowInComponent:kZipComponent];
NSString *state = [self.states objectAtIndex:stateRow];
NSString *zip = [self.zips objectAtIndex:zipRow];
NSString *title = [[NSString alloc]initWithFormat:@"You selected zip code %@", zip];
NSString *message = [[NSString alloc]initWithFormat:@"%@ is in %@", zip, state];
UIAlert!View *alert! = [[UIAlert!View alloc] initWithTitle:title
message:message
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert! show];
[alert! release];
[title release];
[message release];
}
/*
// 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 {
[super viewDidLoad];
NSBundle *bundle = [NSBundle mainBundle];
NSString *plistPath = [bundle pathForResource:@"statedictionary" ofType:@"plist"];
NSDictionary *dictionary = [[NSDictionary alloc] initWithContentsOfFile:plistPath];
self.stateZips = dictionary;
[dictionary release];
NSArray *components = [self.stateZips allKeys];
NSArray *sorted = [components sortedArrayUsingSelector:@selector(compare:)];
self.states = sorted;
NSString *selectedState = [self.states objectAtIndex:0];
NSArray *array = [stateZips objectForKey:selectedState];
self.zips = array;
}
/*
// 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 {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
self.picker = nil;
self.stateZips = nil;
self.states = nil;
self.zips = nil;
[super viewDidUnload];
}
- (void)dealloc {
[picker release];
[stateZips release];
[states release];
[zips release];
[super dealloc];
}
#pragma mark -
#pragma mark Picker Data Source Methods
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 2;
}
-(NSInteger)pickerView:(UIPickerView *)pickerView
numberOfRowsInComponent:(NSInteger)component
{
if (component == kStateComponent)
{
return [self.states count];
}
return [self.zips count];
}
#pragma mark Picker Delegate Methods
- (NSString *)pickerView:(UIPickerView *)pickerView
titleForRow:(NSInteger)row
forComponent:(NSInteger)component
{
if (component == kStateComponent)
{
return [self.states objectAtIndex:row];
}
return [self.zips objectAtIndex:row];
}
- (void)pickerView:(UIPickerView *)pickerView
didSelectRow:(NSInteger)row
inComponent:(NSInteger)component
{
if(component == kStateComponent)
{
NSString *selectedState = [self.states objectAtIndex:row];
NSArray *array = [stateZips objectForKey:selectedState];
self.zips = array;
[picker selectRow:0
inComponent:kZipComponent
animated:YES];
[picker reloadComponent:kZipComponent];
}
}
- (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component
{
if (component == kZipComponent)
return 90;
return 205;
}
@end
//
// CustomPickerViewController.h
// Pickers
//
// Created by Park sungsoo on 3/24/10.
// Copyright 2010 home. All rights reserved.
//
#import! <UIKit/UIKit.h>
@interface CustomPickerViewController : UIViewController
<UIPickerViewDataSource, UIPickerViewDelegate>
{
UIPickerView *picker;
UILabel *winLabel;
NSArray *column1;
NSArray *column2;
NSArray *column3;
NSArray *column4;
NSArray *column5;
UIButton *button;
BOOL bPrevWin;
}
@property (nonatomic, retain) IBOutlet UIPickerView *picker;
@property (nonatomic, retain) IBOutlet UILabel *winLabel;
@property (nonatomic, retain) NSArray *column1;
@property (nonatomic, retain) NSArray *column2;
@property (nonatomic, retain) NSArray *column3;
@property (nonatomic, retain) NSArray *column4;
@property (nonatomic, retain) NSArray *column5;
@property (nonatomic, retain) IBOutlet UIButton *button;
- (IBAction)spin;
@end
//
// CustomPickerViewController.m
// Pickers
//
// Created by Park sungsoo on 3/24/10.
// Copyright 2010 home. All rights reserved.
//
#import! "CustomPickerViewController.h"
#import! <AudioToolBox/AudioToolBox.h>
@implementation CustomPickerViewController
@synthesize picker;
@synthesize winLabel;
@synthesize column1;
@synthesize column2;
@synthesize column3;
@synthesize column4;
@synthesize column5;
@synthesize button;
-(void)showButton
{
button.hidden = NO;
if(NO == bPrevWin) winLabel.text = @"Try again";
}
- (void)playWinSound
{
NSString *path = [[NSBundle mainBundle] pathForResource:@"win" ofType:@"wav"];
SystemSoundID soundID;
AudioServicesCreateSystemSoundID((CFURLRef)[NSURL fileURLWithPath:path], &soundID);
AudioServicesPlaySystemSound(soundID);
winLabel.text = @"You WIN~!";
[self performSelector:@selector(showButton) withObject:nil afterDelay:1.5];
}
-(IBAction)spin
{
BOOL win = NO;
int numInRow = 1;
int lastVal = -1;
winLabel.text = @"";
for(int i = 0; i < 5; i++)
{
int newValue = random() % [self.column1 count];
if(newValue == lastVal) numInRow++;
else numInRow = 1;
lastVal = newValue;
[picker selectRow:newValue inComponent:i animated:YES];
[picker reloadComponent:i];
if(numInRow >= 3) win = YES;
}
button.hidden = YES;
NSString *path = [[NSBundle mainBundle] pathForResource:@"crunch" ofType:@"wav"];
SystemSoundID soundID;
AudioServicesCreateSystemSoundID((CFURLRef)[NSURL fileURLWithPath:path], &soundID);
AudioServicesPlaySystemSound(soundID);
if(YES == win)
{
[self performSelector:@selector(playWinSound)
withObject:nil
afterDelay:.5];
}
else
{
[self performSelector:@selector(showButton)
withObject:nil
afterDelay:.5];
}
bPrevWin = win;
}
/*
// 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 {
[super viewDidLoad];
bPrevWin = NO;
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 < 6; 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];
[barView release];
[crownView release];
[lemonView release];
[appleView release];
}
srandom(time(NULL));
}
/*
// 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 {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
self.picker = nil;
self.winLabel = nil;
self.column1 = nil;
self.column2 = nil;
self.column3 = nil;
self.column4 = nil;
self.column5 = nil;
self.button = nil;
[super viewDidUnload];
}
- (void)dealloc {
[picker release];
[winLabel release];
[column1 release];
[column2 release];
[column3 release];
[column4 release];
[column5 release];
[button 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];
[arrayName release];
return [array objectAtIndex:row];
}
@end
출처 : http://blog.daum.net/pss_notepad/37
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