[iOS] NSTimer에 일지중지와 다시 시작 기능 추가

[NSTimer+Extras.h]

#import <Foundation/Foundation.h>

@interface NSTimer (Extras)

-(void)pauseTimer;

-(void)resumeTimer;

@end

[NSTimer+Extras.m]

#import "NSTimer+Extras.h"

@implementation NSTimer (Extras)

NSDate *pauseStart, *previousFireDate;

- (void)pauseTimer

{

    pauseStart = [[NSDate dateWithTimeIntervalSinceNow:0] retain];

    previousFireDate = [[self fireDate] retain];

    [self setFireDate:[NSDate distantFuture]];

}

- (void)resumeTimer

{

    float pauseTime = -1*[pauseStart timeIntervalSinceNow];

    [self setFireDate:[previousFireDate initWithTimeInterval:pauseTime sinceDate:previousFireDate]];

    [pauseStart release];

    [previousFireDate release];

}

@end