ScrollView indicators 一直显示
需要自己设置一个tag
#define noDisableVerticalScrollTag 836913#define noDisableHorizontalScrollTag 836914@implementation UIImageView (ForScrollView) - (void) setAlpha:(float)alpha { if (self.superview.tag == noDisableVerticalScrollTag) { if (alpha == 0 && self.autoresizingMask == UIViewAutoresizingFlexibleLeftMargin) { if (self.frame.size.width < 10 && self.frame.size.height > self.frame.size.width) { UIScrollView *sc = (UIScrollView*)self.superview; if (sc.frame.size.height < sc.contentSize.height) { return; } } } } if (self.superview.tag == noDisableHorizontalScrollTag) { if (alpha == 0 && self.autoresizingMask == UIViewAutoresizingFlexibleTopMargin) { if (self.frame.size.height < 10 && self.frame.size.height < self.frame.size.width) { UIScrollView *sc = (UIScrollView*)self.superview; if (sc.frame.size.width < sc.contentSize.width) { return; } } } } [super setAlpha:alpha];}@end?