【代碼筆記】登陸單例，代碼筆記

【代碼筆記】登陸單例，代碼筆記

一，工程圖。

二，代碼。

UserInfo.h

#import <Foundation/Foundation.h>@interface UserInfo : NSObject+ (id)sharedManager;@property (nonatomic , retain) NSString* username;@property (nonatomic , retain) NSString* password;@end

 

UserInfo.m

#import "UserInfo.h"static UserInfo * userInfo;@implementation UserInfo#pragma mark - 擷取單例+ (id)sharedManager{    if (!userInfo) {        userInfo = [[UserInfo alloc]init];    }    return userInfo;}@end

 

RootViewController.h

#import <UIKit/UIKit.h>@interface RootViewController : UIViewController@end

 

RootViewController.m

#import "RootViewController.h"//加入標頭檔#import "UserInfo.h"@interface RootViewController ()@end@implementation RootViewController- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];    if (self) {        // Custom initialization    }    return self;}- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view.            //給單例的變數賦值    [[UserInfo sharedManager] setUsername:@"李華"];    [[UserInfo sharedManager] setPassword:@"123456"];            //列印單例的值    NSLog(@"---userName----%@",[[UserInfo sharedManager] username]);    NSLog(@"------password---%@",[[UserInfo sharedManager] password]);        }

 

三，輸出。

2015-10-14 15:09:55.922 登陸單例[3940:183668] ---userName----李華2015-10-14 15:09:55.923 登陸單例[3940:183668] ------password---123456