防止NSTimer和调用对象之间的循环引用

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防止NSTimer和调用对象之间的循环引用

@interface NSTimer (EOCBlocksSupport)

+ (NSTimer *)eoc_scheduledTimerWithTimeInterval:(NSTimeInterval)interval
                                          block:(void(^)())block
                                        repeats:(BOOL)repeats;

@end

@implementation NSTimer (EOCBlocksSupport)

+ (NSTimer *)eoc_scheduledTimerWithTimeInterval:(NSTimeInterval)interval
                                          block:(void(^)())block
                                        repeats:(BOOL)repeats
{
    return [self scheduledTimerWithTimeInterval:interval
                                         target:self
                                       selector:@selector(eoc_blockInvoke:)
                                       userInfo:[block copy]
                                        repeats:repeats];
}

+ (void)eoc_blockInvoke:(NSTimer*)timer {
    void (^block)() = timer.userInfo;
    if (block) {
        block();
    }
}