###简单的分段选择 点击按钮及滑动ScrollView均可以改变VC
###使用方法：
- (void)viewDidLoad {
[super viewDidLoad];
//加载Segment
[self setSegment];
//加载ViewController
[self addChildViewController];
//加载ScrollView
[self setContentScrollView];}
-(void)setSegment {
[self buttonList];
//初始化
LGSegment *segment = [[LGSegment alloc]initWithFrame:CGRectMake(0, self.view.frame.size.height - LG_scrollViewH - 50, self.view.frame.size.width, LG_segmentH)];
segment.delegate = self;
self.segment = segment;
[self.view addSubview:segment];
[self.buttonList addObject:segment.buttonList];
self.LGLayer = segment.LGLayer;}
//加载3个ViewController
-(void)addChildViewController{
UIViewController * vc1 = [[UIViewController alloc]init];
vc1.view.backgroundColor= [UIColor colorWithRed:80.0/255 green:227.0/255 blue:194.0/255 alpha:100];
[self addChildViewController:vc1];
UIViewController * vc2 = [[UIViewController alloc]init];
vc2.view.backgroundColor= [UIColor colorWithRed:0.0/255 green:167.0/255 blue:210.0/255 alpha:100];
[self addChildViewController:vc2];
UIViewController * vc3 = [[UIViewController alloc]init];
vc3.view.backgroundColor= [UIColor colorWithRed:249.0/255 green:123.0/255 blue:134.0/255 alpha:100];
[self addChildViewController:vc3];}
####示例：
