/** 设置选择器 */

- (void)setUpSegmentCtr {

    UISegmentedControl *segmentCtr = [[UISegmentedControl alloc] initWithItems:@[@"采购订单",@"销售订单"]];

    self.navigationItem.titleView = segmentCtr;

    [segmentCtr addTarget:self action:@selector(didClicksegmentedControlAction:) forControlEvents:UIControlEventValueChanged];

    self.segmentCtr = segmentCtr;

    NSDictionary *dic = [NSDictionary dictionaryWithObjectsAndKeys:EMCNavColor,

                         NSForegroundColorAttributeName,

                         [UIFont boldSystemFontOfSize:],

                         NSFontAttributeName,nil];

    [ self.segmentCtr setTitleTextAttributes:dic forState:UIControlStateSelected];

    NSDictionary* unselectedTextAttributes = @{NSFontAttributeName:[UIFont boldSystemFontOfSize:],

                                               NSForegroundColorAttributeName: [UIColor whiteColor]};

    [self.segmentCtr setTitleTextAttributes:unselectedTextAttributes forState:UIControlStateNormal];

    [self.segmentCtr setBackgroundImage:[UIImage imageWithColor:[UIColor clearColor]] forState:UIControlStateNormal barMetrics:UIBarMetricsDefaultPrompt];

    [self.segmentCtr setBackgroundImage:[UIImage imageWithColor:[UIColor whiteColor]] forState:UIControlStateSelected barMetrics:UIBarMetricsDefaultPrompt];

     self.segmentCtr.tintColor = [UIColor whiteColor];

     self.segmentCtr.apportionsSegmentWidthsByContent = NO;

    self.segmentCtr.backgroundColor = [UIColor clearColor];

    self.segmentCtr.selectedSegmentIndex = ;

}

- (void)viewDidLoad {

    [super viewDidLoad];

    /** 设置选择器 */

    [self setUpSegmentCtr];

}