Ios 移除并消除动画中使用的对象赢得'；t零

使用Obj-c连续地为alpha设置动画，但是当我尝试为空并删除子视图时，它会粘住，并且不会删除或停止设置动画

-(void)flashFingerPrint{
    [UIView animateKeyframesWithDuration:1 delay:0 options:UIViewAnimationOptionRepeat|UIViewAnimationOptionAutoreverse|UIViewAnimationCurveEaseInOut animations:^{
         self.purpleFingerPrint.alpha = 0;
    } completion:^(BOOL finished) {
        nil;
    }];
}



-(void)hidePurpleHelper {

    if(nil != self.purpleFingerPrint && nil != self.purpleFingerPrint) {

        // add it to the screen with animation
        [UIView animateWithDuration:0.5 delay:0.2 options:(UIViewAnimationCurveEaseOut) animations:^{
            self.purpleHelperView.alpha = 0;
            self.purpleFingerPrint.alpha = 0;
            self.purpleFingerPrint = nil;
            [self.view willRemoveSubview:self.purpleFingerPrint];

        } completion:^(BOOL finished) {
            // nothing
            self.purpleHelperView = nil;
            self.purpleFingerPrint = nil;
            [self.view willRemoveSubview:self.purpleFingerPrint];
        }];
    }
}

我调用了隐藏功能，但指纹仍显示在屏幕上并仍在闪烁？

您需要

[self.purpleFingerPrint removeFromSuperview];

你需要

[self.purpleFingerPrint removeFromSuperview];

---

无需在此处重复检查

if（nil！=self.purpleFingerPrint&&nil！=self.purpleFingerPrint）

无需在此处重复检查

if（nil！=self.purpleFingerPrint&&nil！=self.purpleFingerPrint）