在iOS10,Xcode8beta上运行HMSegmentControl时会出现，title不显示的情况，如图：
在源码中做如下修改即可正常显示，添加方法
- (UIFont *)attributedFontAtIndex:(NSInteger)index
{
BOOL selected = (index == self.selectedSegmentIndex) ? YES : NO;
NSDictionary *titleAttrs = selected ? [self resultingSelectedTitleTextAttributes] : [self resultingTitleTextAttributes];
UIFont *font = [titleAttrs objectForKey:NSFontAttributeName];
if (!font) {
font = [UIFont systemFontOfSize:18];
}
return font;
}
- (UIColor *)attributedColorAtIndex:(NSInteger)index
{
BOOL selected = (index == self.selectedSegmentIndex) ? YES : NO;
NSDictionary *titleAttrs = selected ? [self resultingSelectedTitleTextAttributes] : [self resultingTitleTextAttributes];
UIColor *color = [titleAttrs objectForKey:NSForegroundColorAttributeName];
if (!color) {
color = [UIColor blackColor];
}
return color;
}
在drawRect:方法中:
CATextLayer *titleLayer = [CATextLayer layer];
titleLayer.frame = rect;
titleLayer.alignmentMode = kCAAlignmentCenter;
titleLayer.truncationMode = kCATruncationEnd;
titleLayer.string = [self attributedTitleAtIndex:idx];
titleLayer.contentsScale = [[UIScreen mainScreen] scale];
修改成：
UIFont *font = [self attributedFontAtIndex:idx];
UIColor *color = [self attributedColorAtIndex:idx];
CATextLayer *titleLayer = [[CATextLayer alloc] init];
titleLayer.frame = rect;
titleLayer.alignmentMode = kCAAlignmentCenter;
titleLayer.truncationMode = kCATruncationEnd;
titleLayer.string = [self attributedTitleAtIndex:idx];
titleLayer.fontSize = font.pointSize;
titleLayer.font = (__bridge CFTypeRef _Nullable)(font.fontName);
titleLayer.string = (NSString *)titleString;
titleLayer.foregroundColor = color.CGColor;
titleLayer.contentsScale = [[UIScreen mainScreen] scale];
在修改过程中并未对源码或者多余部分进行删除，修改 只是简单让title显示出来，这里只简单介绍一种思路。
