don't use strings for store empty custom views

[pingwinator]

You save empty view like @"" strings. 0_o

- (void)setCustomView:(UIView *)view forState:(SVPullToRefreshState)state {
    id viewPlaceholder = view;

    if(!viewPlaceholder)
        viewPlaceholder = @"";

    if(state == SVPullToRefreshStateAll)
        [self.viewForState replaceObjectsInRange:NSMakeRange(0, 3) withObjectsFromArray:@[viewPlaceholder, viewPlaceholder, viewPlaceholder]];
    else
        [self.viewForState replaceObjectAtIndex:state withObject:viewPlaceholder];

    [self setNeedsLayout];
}

It's look copy-paste from

- (void)setSubtitle:(NSString *)subtitle forState:(SVPullToRefreshState)state {
    if(!subtitle)
        subtitle = @"";

    if(state == SVPullToRefreshStateAll)
        [self.subtitles replaceObjectsInRange:NSMakeRange(0, 3) withObjectsFromArray:@[subtitle, subtitle, subtitle]];
    else
        [self.subtitles replaceObjectAtIndex:state withObject:subtitle];

    [self setNeedsLayout];
}

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This change is 

[samvermette]

AFAIK this is how you set a text label to be blank... [NSNull null] will display "(null)" no?

Why the images?

[pingwinator]

no, I said it only for custom view

[samvermette]

Still don't get it. What's the problem with setting blank strings for custom view?