UISegmentedControl 索引处的 UIView

Question

我想更改 UISegmentedControl 内特定段（不是选定段）的背景颜色，但似乎很难为特定段获取适当的 UIView。我正在寻找类似的方法：

[segmentedControl viewForSegmentAtIndex:3];

Answer 1

最终使用了一个类别:)

@interface UISegmentedControl (BP)
- (UIView *)segmentAtIndex:(NSUInteger)index;
@end

@implementation UISegmentedControl (BP)
- (UIView *)segmentAtIndex:(NSUInteger)index
{
    // All the views are a private subclass "UISegment", and are not ordered sanely, no problem, we can fix that
    return [self.subviews sortedArrayWithOptions:0 usingComparator:^NSComparisonResult(UIView *obj1, UIView *obj2) {
        return [@(obj1.frame.origin.x) compare:@(obj2.frame.origin.x)];
    }][index];
}
@end