#import <UIKit/UIKit.h>

@interface MJSegmentViewController : UIViewController

/**

 *  @brief   设置切换不同viewcontroller

 *

 *  @param arrViewCtl 保存viewController对象

 *  @param arrTitle   分段器的标题

 */

- (void)loadSetViewController :(NSArray *)arrViewCtl andSegementTitle :(NSArray *)arrTitle;

@end

#import "MJSegmentViewController.h"

@interface MJSegmentViewController ()

/**

 *  @brief 分段器选中加载对应的viewcontroller

 *

 */

@property(nonatomic,assign) UIViewController *selectedViewController;

/**

 *  @brief  用来标识分段器选中的索引

 *

 */

@property(nonatomic, assign) NSInteger selectedViewCtlWithIndex;

/**

 *  @brief 声明UISegmentedControl 分段器

 */

@property(nonatomic,strong) UISegmentedControl *segmentControl;

@end

@implementation MJSegmentViewController

#pragma mark - lifeCircle

- (void)viewDidLoad

{

    [super viewDidLoad];

    [self createSegement];

}

- (void)didReceiveMemoryWarning

{

    [super didReceiveMemoryWarning];

}

#pragma mark - private

/**

 *  @brief 创建分段器

 *

 */

- (void)createSegement

{

    if (!_segmentControl)

    {

        _segmentControl = [[UISegmentedControl alloc]init];

        _segmentControl.segmentedControlStyle = UISegmentedControlStyleBar;

        _segmentControl.layer.masksToBounds = YES ;

        _segmentControl.layer.cornerRadius = 3.0;

        _segmentControl.tintColor= [UIColor colorWithRed:0.027

                                                   green:0.060

                                                    blue:0.099

                                                   alpha:0.900];

        [_segmentControl setBackgroundImage:[UIImage imageNamed:@""] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];

        self.navigationItem.titleView = _segmentControl;

    }

    else

    {

        [_segmentControl removeAllSegments];

    }

    [_segmentControl addTarget:self

                        action:@selector(selectedSegmentClick:)

                        forControlEvents:UIControlEventValueChanged];

}

- (void)loadSetViewController:(NSArray *)arrViewCtl andSegementTitle:(NSArray *)arrTitle

{

    if ([_segmentControl numberOfSegments] > )

    {

        return;

    }

    for (int i = ; i < [arrViewCtl count]; i++)

    {

        [self pushViewController:arrViewCtl[i] title:arrTitle[i]];

    }

    _segmentControl.frame = CGRectMake(, , , );

    [_segmentControl setSelectedSegmentIndex:];

    self.selectedViewCtlWithIndex = ;

}

- (void)pushViewController:(UIViewController *)viewController title:(NSString *)title

{

    [_segmentControl insertSegmentWithTitle:title atIndex:_segmentControl.numberOfSegments animated:NO];

    [self addChildViewController:viewController];

    [_segmentControl sizeToFit];

}

- (void)setSelectedViewCtlWithIndex:(NSInteger)index

{

    if (!_selectedViewController)

    {

        _selectedViewController = self.childViewControllers[index];

        if ([[UIDevice currentDevice].systemVersion floatValue] < 7.0f)

        {

            CGFloat fTop = 20.0f;

        if (self.navigationController && !self.navigationController.navigationBar.translucent)

            {

                fTop = self.navigationController.navigationBar.frame.size.height;

            }

            CGRect frame = self.view.frame;

            [_selectedViewController view].frame = CGRectMake(frame.origin.x, frame.origin.y - fTop, frame.size.width, frame.size.height);

        }

        else

        {

            [_selectedViewController view].frame = self.view.frame;

        }

        [self.view addSubview:[_selectedViewController view]];

        [_selectedViewController didMoveToParentViewController:self];

    }

    else

    {

        if ([[UIDevice currentDevice].systemVersion floatValue] < 7.0f) {

            [self.childViewControllers[index] view].frame = self.view.frame;

        }

        [self transitionFromViewController:_selectedViewController toViewController:self.childViewControllers[index] duration:0.0f options:UIViewAnimationOptionTransitionNone animations:nil completion:^(BOOL finished)

         {

            _selectedViewController = self.childViewControllers[index];

            _selectedViewCtlWithIndex = index;

        }];

    }

}

#pragma mark - action

- (void)selectedSegmentClick:(id)sender

{

 self.selectedViewCtlWithIndex = _segmentControl.selectedSegmentIndex;

}

@end

#import <UIKit/UIKit.h>

#import "MJSegmentViewController.h"

@interface MJViewController : MJSegmentViewController

@end

#import "MJViewController.h"

#import "FirstViewController.h"

#import "SecondViewController.h"

@interface MJViewController ()

@end

@implementation MJViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    NSArray *arr = @[[self.storyboard instantiateViewControllerWithIdentifier:@"FirstViewController"], [self.storyboard instantiateViewControllerWithIdentifier:@"SecondViewController"]];

    NSArray *title = @[@"one",@"two"];

    [self loadSetViewController:arr andSegementTitle:title];

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

@end