duoshoubang/FirstLink/Utils/Timer/FKWeakTimerT...

//
//  FKWeakTimerTarget.m
//  FirstLink
//
//  Created by ascii on 15/12/3.
//  Copyright © 2015年 FirstLink. All rights reserved.
//

#import "FKWeakTimerTarget.h"

@interface FKWeakTimerTarget ()

@property (nonatomic, weak) id target;
@property (nonatomic, assign) SEL selector;
@property (nonatomic, weak) NSTimer* timer;

@end

@implementation FKWeakTimerTarget

- (void) fire:(NSTimer *)timer {
    if(self.target && [self.target respondsToSelector:@selector(performSelector:withObject:)]) {
        [self.target performSelector:self.selector withObject:timer.userInfo];
    } else {
        [self.timer invalidate];
    }
}

+ (NSTimer *) scheduledTimerWithTimeInterval:(NSTimeInterval)interval
                                      target:(id)aTarget
                                    selector:(SEL)aSelector
                                    userInfo:(id)userInfo
                                     repeats:(BOOL)repeats {
    FKWeakTimerTarget* timerTarget = [[FKWeakTimerTarget alloc] init];
    timerTarget.target = aTarget;
    timerTarget.selector = aSelector;
    timerTarget.timer = [NSTimer scheduledTimerWithTimeInterval:interval
                                                         target:timerTarget
                                                       selector:@selector(fire:)
                                                       userInfo:userInfo
                                                        repeats:repeats];
    return timerTarget.timer;
}

@end