UIScrollView 滚动事件阻止 UIView 动画

我有一组 UIImageView 的动画，它们代表当前值并不断向上滴答作响...理想情况下永远不会停止，视图中也是一个滚动视图或滚动视图，每当我滚动或缩放滚动视图时，动画都会停止，并且当scrollView完全停止移动时再次启动。我相信这是由于线程问题，因为重绘元素都发生在主线程上，起初我尝试了 UIView 动画，然后甚至核心动画都没有效果......有没有办法鱼与熊掌兼得？

任何和所有的帮助将不胜感激

代码如下

- (void)TestJackpotAtRate:(double)rateOfchange
{
    double roc = rateOfchange;

    for (int i = 0; i < [_jackPotDigits count]; ++i)
    {
        roc = rateOfchange/(pow(10, i));

        UIImageView *jackpotDigit = [_jackPotDigits objectAtIndex:i];

        float foreveryNseconds = 1/roc;

        NSDictionary *dict = @{@"interval"      :   [NSNumber numberWithFloat:foreveryNseconds],
                           @"jackPotDigit"  :   jackpotDigit
                           };

        [NSTimer scheduledTimerWithTimeInterval:foreveryNseconds target:self selector:@selector(AscendDigit:) userInfo:dict repeats:YES];
    }
}

-(void)AscendDigit:(NSTimer*)timer
{
    NSDictionary *dict = [timer userInfo];

    NSTimeInterval interval = [(NSNumber*)[dict objectForKey:@"interval"] floatValue];
    UIImageView *jackpotDigit = [dict objectForKey:@"jackPotDigit"];

    float duration = (interval < 1) ? interval : 1;

    if (jackpotDigit.frame.origin.y < -230 )
    {
        NSLog(@"hit");
        [timer invalidate];
        CGRect frame = jackpotDigit.frame;
        frame.origin.y = 0;
        [jackpotDigit setFrame:frame];

        [NSTimer scheduledTimerWithTimeInterval:interval target:self selector:@selector(AscendDigit:) userInfo:dict repeats:YES];
    }

    [UIView animateWithDuration:duration delay:0 options:UIViewAnimationOptionAllowUserInteraction animations:^
     {
         CGRect frame = [jackpotDigit frame];

         double yDisplacement = 25;

         frame.origin.y -= yDisplacement;

         [jackpotDigit setFrame:frame];

     }
                      completion:^(BOOL finished)
     {

     }];

}

As danypata https://stackoverflow.com/users/2315974/danypata/通过此线程在我的评论中指出当 UIScrollView 滚动时，我的自定义 UI 元素不会更新 https://stackoverflow.com/questions/4109898/my-custom-ui-elements-are-not-being-updated-while-uiscrollview-is-scrolled/4136988#4136988它与 NStimer 线程有关，而不是与动画线程有关，或者如果有人可以澄清的话，可能两者都有关。在任何情况下，当滚动时，似乎所有滚动事件都独占主循环，解决方案是将用于执行动画的计时器置于相同的循环模式中，即UITracking循环模式 http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIApplication_Class/Reference/Reference.html#//apple_ref/doc/constant_group/Run_Loop_Mode_for_Tracking所以它也可以在滚动时使用主循环......

NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:foreveryNseconds target:self selector:@selector(AscendDigit:) userInfo:dict repeats:YES];

[[NSRunLoop currentRunLoop] addTimer:timer forMode:NSRunLoopCommonModes];

Tada.