1 UIImage *segmentSelected = [[UIImage imageNamed:@"segcontrol_sel.png"] 2                                 resizableImageWithCapInsets:UIEdgeInsetsMake(0, 15, 0, 15)]; 3     UIImage *segmentUnSelected = [[UIImage imageNamed:@"segcontrol_uns.png"] 4                                   resizableImageWithCapInsets:UIEdgeInsetsMake(0, 15, 0, 15)]; 5     UIImage *segmentSelectedUnselected = [[UIImage imageNamed:@"segcontrol_sel-uns.png"] 6                                           resizableImageWithCapInsets:UIEdgeInsetsMake(0, 15, 0, 15)]; 7     UIImage *segmentUnSelectedSelected = [[UIImage imageNamed:@"segcontrol_uns-sel.png"] 8                                 resizableImageWithCapInsets:UIEdgeInsetsMake(0, 15, 0, 15)]; 9     UIImage *segmentUnSelectedUnSelected = [[UIImage imageNamed:@"segcontrol_uns-uns.png"]10                                 resizableImageWithCapInsets:UIEdgeInsetsMake(0, 15, 0, 15)];11     12     [self.seg setBackgroundImage:segmentUnSelected　　　　 // 非选中状态背景图13                         forState:UIControlStateNormal14                       barMetrics:UIBarMetricsDefault];15     [self.seg setBackgroundImage:segmentSelected　　　　　　　　// 选中状态背景图16                         forState:UIControlStateSelected17                       barMetrics:UIBarMetricsDefault];18     19     [self.seg setDividerImage:segmentUnSelectedUnSelected   // 设置分割部分背景图，二侧都是非选中状态时20           forLeftSegmentState:UIControlStateNormal21             rightSegmentState:UIControlStateNormal22                    barMetrics:UIBarMetricsDefault];23     24     [self.seg setDividerImage:segmentSelectedUnselected　　　　// 设置分割部分背景图，左边为选中状态，右边为非选中状态时25           forLeftSegmentState:UIControlStateSelected26             rightSegmentState:UIControlStateNormal27                    barMetrics:UIBarMetricsDefault];28     29     [self.seg setDividerImage:segmentUnSelectedSelected　　　　// 设置分割部分背景图，左边为非选中状态，右边为选中状态30           forLeftSegmentState:UIControlStateNormal31             rightSegmentState:UIControlStateSelected32                    barMetrics:UIBarMetricsDefault];