iOSハンズオントレ`ニング observer (delegate,notification,KVO)
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或恢壊艶姻厩艶姻パタ`ンについて、禽艶鉛艶乙温岳艶,鰻看岳庄韓庄界温岳庄看稼,悪閣或を聞ってg廾する圭隈を僥びます。
![//
//
//
PictureView.h
!
#import <UIKit/UIKit.h>
!
@interface PictureView : UIImageView
{
@private
NSObject *delegate_;
}
!
@property NSObject *delegate;
!
@end
//
//
//
PictureView.m
!
#import "PictureView.h"
!
@implementation PictureView
@synthesize delegate = delegate_;
!
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
self.userInteractionEnabled = YES; // UIImageViewはデフォルトでNoなので廣吭
}
return self;
}
!
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
if(delegate_ !=nil) {
[delegate_ pictureSelected];
}
}
!
@end](https://image.slidesharecdn.com/iosobserver-130905183458-/85/iOS-observer-delegate-notification-KVO-7-320.jpg)
![//
//
PictureViewDelegate.h?(javaでいうところのインタ`フェ`ス)
//
!
#import <Foundation/Foundation.h>
!
@protocol PictureViewDelegate <NSObject>
@optional
-(void)pictureSelected; // 渇鵐瓮愁奪
!
@end
//
//
//
PictureView.h
!
#import <UIKit/UIKit.h>
#import "PictureViewDelegate.h"
!
@interface PictureView : UIImageView
{
@private
NSObject <PictureViewDelegate> *delegate_;
}
@property NSObject <PictureViewDelegate> *delegate;
@end
//
//
//
PictureView.m
!
#import "PictureView.h"
!
@implementation PictureView
@synthesize delegate = delegate_;
!
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
self.userInteractionEnabled = YES;
}
return self;
}
!
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
if(delegate_ !=nil) {
if ([delegate_ conformsToProtocol:@protocol(PictureViewDelegate)]) {
if ([delegate_ respondsToSelector:@selector(pictureSelected)]) {
[delegate_ pictureSelected];
}
}
}
}
@end](https://image.slidesharecdn.com/iosobserver-130905183458-/85/iOS-observer-delegate-notification-KVO-9-320.jpg)
![//
Screen1ViewController.h
!
#import <UIKit/UIKit.h>
#import "PictureViewDelegate.h"
!
@interface Screen1ViewController : UIViewController <PictureViewDelegate>
!
@end
/
!
Screen1ViewController.m
#import "Screen1ViewController.h"
#import "PictureView.h"
!
@interface Screen1ViewController ()
!
@end
!
@implementation Screen1ViewController
!
- (id)init
{
self = [super init];
if (self) {
// Custom initialization
self.title = @"Album";
self.view.backgroundColor = [UIColor grayColor];
}
return self;
}
!
- (void)viewDidLoad
{
[super viewDidLoad];
UIImage* image01 = [UIImage imageNamed:@"picture01.jpeg"];
PictureView* uiImageView1 = [[PictureView alloc]
initWithFrame:CGRectMake(10, 10, 100, 150)];
uiImageView1.delegate = self;
uiImageView1.image = image01;
[self.view addSubview:uiImageView1];
!
UIImage* image02 = [UIImage imageNamed:@"picture02.jpeg"];
PictureView* uiImageView2 = [[PictureView alloc]
initWithFrame:CGRectMake(120, 10, 100, 150)];
uiImageView2.delegate = self;
uiImageView2.image = image02;
[self.view addSubview:uiImageView2];
}
!
-(void)pictureSelected {
NSLog(@"Push");
}
!
@end](https://image.slidesharecdn.com/iosobserver-130905183458-/85/iOS-observer-delegate-notification-KVO-11-320.jpg)
![//
//
//
Screen1ViewController.m
!
#import "Screen1ViewController.h"
#import "PictureView.h"
!
@interface Screen1ViewController ()
!
@end
!
@implementation Screen1ViewController
!
- (id)init
{
self = [super init];
if (self) {
// Custom initialization
self.title = @"Album";
self.view.backgroundColor = [UIColor grayColor];
// NSNotificationCenterを函誼する
NSNotificationCenter* center;
center = [NSNotificationCenter defaultCenter];
// Observerとして鞠hする
[center addObserver:self selector:@selector(pictureSelected:)
name:@"PictureTaped" object:nil];
}
return self;
}](https://image.slidesharecdn.com/iosobserver-130905183458-/85/iOS-observer-delegate-notification-KVO-14-320.jpg)
![//
//
//
PictureView.m
!
#import "PictureView.h"
!
@implementation PictureView
!
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
self.userInteractionEnabled = YES;
}
return self;
}
!
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
// NSNotificationを恬撹する
NSNotification* notification;
notification = [NSNotification notificationWithName:@"PictureTaped"
object:self userInfo:nil];
// NSNotificationCenterを函誼する
NSNotificationCenter* center;
center = [NSNotificationCenter defaultCenter];
// 宥岑を佩う
[center postNotification:notification];
}
!
@end
//
//
//
PictureViewDelegate.h
!
#import <Foundation/Foundation.h>
!
@protocol PictureViewDelegate <NSObject>
@optional
-(void)pictureSelected:(NSNotification *)notification;
!
@end](https://image.slidesharecdn.com/iosobserver-130905183458-/85/iOS-observer-delegate-notification-KVO-16-320.jpg)
![//
//
//
Screen1ViewController.m
!
#import "Screen1ViewController.h"
#import "PictureView.h"
!
@interface Screen1ViewController ()
!
@end
!
@implementation Screen1ViewController
!
- (id)init
{
self = [super init];
if (self) {
// Custom initialization
self.title = @"Album";
self.view.backgroundColor = [UIColor grayColor];
// NSNotificationCenterを函誼する
NSNotificationCenter* center;
center = [NSNotificationCenter defaultCenter];
// Observerとして鞠hする
[center addObserver:self selector:@selector(pictureSelected:)
name:@"PictureTaped" object:nil];
}
return self;
}
!
- (void)viewDidLoad
{
[super viewDidLoad];
UIImage* image01 = [UIImage imageNamed:@"picture01.jpeg"];
PictureView* uiImageView1 = [[PictureView alloc]
initWithFrame:CGRectMake(10, 10, 100, 150)];
uiImageView1.image = image01;
uiImageView1.tag = 1;
[self.view addSubview:uiImageView1];
!
UIImage* image02 = [UIImage imageNamed:@"picture02.jpeg"];
PictureView* uiImageView2 = [[PictureView alloc]
initWithFrame:CGRectMake(120, 10, 100, 150)];
uiImageView2.image = image02;
uiImageView2.tag = 2;
[self.view addSubview:uiImageView2];
}
!
-(void)pictureSelected:(NSNotification*)notification {
NSLog(@"Push %@",notification.userInfo);
}
!
@end](https://image.slidesharecdn.com/iosobserver-130905183458-/85/iOS-observer-delegate-notification-KVO-18-320.jpg)
![//
//
//
Screen1ViewController.m
!
#import "Screen1ViewController.h"
#import "KVOclass.h"
@interface Screen1ViewController ()
!
@end
!
@implementation Screen1ViewController
!
- (id)init
{
self = [super init];
if (self) {
// Custom initialization
self.title = @"KVO Test";
self.view.backgroundColor = [UIColor grayColor];
}
return self;
}
!
- (void)viewDidLoad
{
[super viewDidLoad];
!
!
KVOclass* kvo01 = [KVOclass new];
[kvo01 addObserver:self forKeyPath:@"value" options:(NSKeyValueObservingOptionNew|NSKeyValueObservingOptionOld) context:nil];
KVOclass* kvo02 = [KVOclass new];
[kvo02 addObserver:self forKeyPath:@"value" options:(NSKeyValueObservingOptionNew|NSKeyValueObservingOptionOld) context:nil];
kvo01.value = 1; // ､筝
}
!
- (void)observeValueForKeyPath:(NSString*)keyPath
ofObject:(id)object
change:(NSDictionary*)change
context:(void*)context
{
if ([keyPath isEqual:@"value"])
{
NSLog(@"New Key = %@",[change objectForKey:NSKeyValueChangeNewKey]);
}
}
!
@end](https://image.slidesharecdn.com/iosobserver-130905183458-/85/iOS-observer-delegate-notification-KVO-22-320.jpg)
iOSハンズオントレ`ニング observer (delegate,notification,KVO)
- 2. 朕肝 Observerパタ`ン Delegate(溜j) Noti?cation(宥岑) KVO : Key-Value 或恢壊艶姻厩庄稼乙(キ`ｼ猜)
- 7. // // // PictureView.h ! #import <UIKit/UIKit.h> ! @interface PictureView : UIImageView { @private NSObject *delegate_; } ! @property NSObject *delegate; ! @end // // // PictureView.m ! #import "PictureView.h" ! @implementation PictureView @synthesize delegate = delegate_; ! - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { // Initialization code self.userInteractionEnabled = YES; // UIImageViewはデフォルトでNoなので廣吭 } return self; } ! - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { if(delegate_ !=nil) { [delegate_ pictureSelected]; } } ! @end
- 8. Delegateg廾 ┘廛蹈肇灰襪臨撹 プロトコルを仟たに恬撹する。 subjectクラスのメンバ篳に、プロトコルを峺協 する。 タップされたHに柵ぶメソッドで、プロトコルに していることを_Jする。
- 9. // // PictureViewDelegate.h?(javaでいうところのインタ`フェ`ス) // ! #import <Foundation/Foundation.h> ! @protocol PictureViewDelegate <NSObject> @optional -(void)pictureSelected; // 渇鵐瓮愁奪 ! @end // // // PictureView.h ! #import <UIKit/UIKit.h> #import "PictureViewDelegate.h" ! @interface PictureView : UIImageView { @private NSObject <PictureViewDelegate> *delegate_; } @property NSObject <PictureViewDelegate> *delegate; @end // // // PictureView.m ! #import "PictureView.h" ! @implementation PictureView @synthesize delegate = delegate_; ! - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { // Initialization code self.userInteractionEnabled = YES; } return self; } ! - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { if(delegate_ !=nil) { if ([delegate_ conformsToProtocol:@protocol(PictureViewDelegate)]) { if ([delegate_ respondsToSelector:@selector(pictureSelected)]) { [delegate_ pictureSelected]; } } } } @end
- 11. // Screen1ViewController.h ! #import <UIKit/UIKit.h> #import "PictureViewDelegate.h" ! @interface Screen1ViewController : UIViewController <PictureViewDelegate> ! @end / ! Screen1ViewController.m #import "Screen1ViewController.h" #import "PictureView.h" ! @interface Screen1ViewController () ! @end ! @implementation Screen1ViewController ! - (id)init { self = [super init]; if (self) { // Custom initialization self.title = @"Album"; self.view.backgroundColor = [UIColor grayColor]; } return self; } ! - (void)viewDidLoad { [super viewDidLoad]; UIImage* image01 = [UIImage imageNamed:@"picture01.jpeg"]; PictureView* uiImageView1 = [[PictureView alloc] initWithFrame:CGRectMake(10, 10, 100, 150)]; uiImageView1.delegate = self; uiImageView1.image = image01; [self.view addSubview:uiImageView1]; ! UIImage* image02 = [UIImage imageNamed:@"picture02.jpeg"]; PictureView* uiImageView2 = [[PictureView alloc] initWithFrame:CGRectMake(120, 10, 100, 150)]; uiImageView2.delegate = self; uiImageView2.image = image02; [self.view addSubview:uiImageView2]; } ! -(void)pictureSelected { NSLog(@"Push"); } ! @end
- 14. // // // Screen1ViewController.m ! #import "Screen1ViewController.h" #import "PictureView.h" ! @interface Screen1ViewController () ! @end ! @implementation Screen1ViewController ! - (id)init { self = [super init]; if (self) { // Custom initialization self.title = @"Album"; self.view.backgroundColor = [UIColor grayColor]; // NSNotificationCenterを函誼する NSNotificationCenter* center; center = [NSNotificationCenter defaultCenter]; // Observerとして鞠hする [center addObserver:self selector:@selector(pictureSelected:) name:@"PictureTaped" object:nil]; } return self; }
- 16. // // // PictureView.m ! #import "PictureView.h" ! @implementation PictureView ! - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { // Initialization code self.userInteractionEnabled = YES; } return self; } ! - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { // NSNotificationを恬撹する NSNotification* notification; notification = [NSNotification notificationWithName:@"PictureTaped" object:self userInfo:nil]; // NSNotificationCenterを函誼する NSNotificationCenter* center; center = [NSNotificationCenter defaultCenter]; // 宥岑を佩う [center postNotification:notification]; } ! @end // // // PictureViewDelegate.h ! #import <Foundation/Foundation.h> ! @protocol PictureViewDelegate <NSObject> @optional -(void)pictureSelected:(NSNotification *)notification; ! @end
- 18. // // // Screen1ViewController.m ! #import "Screen1ViewController.h" #import "PictureView.h" ! @interface Screen1ViewController () ! @end ! @implementation Screen1ViewController ! - (id)init { self = [super init]; if (self) { // Custom initialization self.title = @"Album"; self.view.backgroundColor = [UIColor grayColor]; // NSNotificationCenterを函誼する NSNotificationCenter* center; center = [NSNotificationCenter defaultCenter]; // Observerとして鞠hする [center addObserver:self selector:@selector(pictureSelected:) name:@"PictureTaped" object:nil]; } return self; } ! - (void)viewDidLoad { [super viewDidLoad]; UIImage* image01 = [UIImage imageNamed:@"picture01.jpeg"]; PictureView* uiImageView1 = [[PictureView alloc] initWithFrame:CGRectMake(10, 10, 100, 150)]; uiImageView1.image = image01; uiImageView1.tag = 1; [self.view addSubview:uiImageView1]; ! UIImage* image02 = [UIImage imageNamed:@"picture02.jpeg"]; PictureView* uiImageView2 = [[PictureView alloc] initWithFrame:CGRectMake(120, 10, 100, 150)]; uiImageView2.image = image02; uiImageView2.tag = 2; [self.view addSubview:uiImageView2]; } ! -(void)pictureSelected:(NSNotification*)notification { NSLog(@"Push %@",notification.userInfo); } ! @end
- 20. KVOg廾 Subjectクラス Oする､魍屬張ラスを恬撹する。 // // // KVOclass.h ! #import <Foundation/Foundation.h> ! @interface KVOclass : NSObject { int value_; } @property int value; ! @end // // // KVOclass.m ! #import "KVOclass.h" ! @implementation KVOclass @synthesize value = value_; ! @end
- 22. // // // Screen1ViewController.m ! #import "Screen1ViewController.h" #import "KVOclass.h" @interface Screen1ViewController () ! @end ! @implementation Screen1ViewController ! - (id)init { self = [super init]; if (self) { // Custom initialization self.title = @"KVO Test"; self.view.backgroundColor = [UIColor grayColor]; } return self; } ! - (void)viewDidLoad { [super viewDidLoad]; ! ! KVOclass* kvo01 = [KVOclass new]; [kvo01 addObserver:self forKeyPath:@"value" options:(NSKeyValueObservingOptionNew|NSKeyValueObservingOptionOld) context:nil]; KVOclass* kvo02 = [KVOclass new]; [kvo02 addObserver:self forKeyPath:@"value" options:(NSKeyValueObservingOptionNew|NSKeyValueObservingOptionOld) context:nil]; kvo01.value = 1; // ､筝 } ! - (void)observeValueForKeyPath:(NSString*)keyPath ofObject:(id)object change:(NSDictionary*)change context:(void*)context { if ([keyPath isEqual:@"value"]) { NSLog(@"New Key = %@",[change objectForKey:NSKeyValueChangeNewKey]); } } ! @end