单例类

#import <Foundation/Foundation.h>
@interface Singleton : NSObject

@property (nonatomic,strong) NSString *userId;
@property (nonatomic,strong) NSString *createTime;
@property (nonatomic,strong) NSString *ticket;
@property (nonatomic,strong) NSString *userSecretKey;
@property (nonatomic,strong) NSString *isPlayingId;
@property (nonatomic,strong) NSString *appId;

+ (Singleton *)sharedSingleton;

@end

@implementation Singleton

+(Singleton *)sharedSingleton{
static Singleton *sharedSingleton = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
if (!sharedSingleton) {
sharedSingleton = [[Singleton alloc]init];
}

});

return sharedSingleton;
}

@end

这就是一个简单地单例类!