关于在self.navigationItem.titleView 中增加视图和改变frame的问题

 NSArray *segeArray = [NSArray  arrayWithObjects:@"PHOTOS",@"VIDEOS",nil];

    UISegmentedControl *segmentCtr = [[UISegmentedControl  alloc]  initWithItems:segeArray];

    segmentCtr.selectedSegmentIndex =0;

    segmentCtr.frame =CGRectMake(0,5,scrrenW*0.5,37);

    segmentCtr.tintColor = [UIColor whiteColor];

    [segmentCtr setTitleTextAttributes:@{NSForegroundColorAttributeName:totalColor,NSFontAttributeName:[UIFontsystemFontOfSize:24]}  forState:UIControlStateSelected];

    //    未选中的颜色

    [segmentCtr setTitleTextAttributes:@{NSForegroundColorAttributeName:totalColor,NSFontAttributeName:[UIFontsystemFontOfSize:24]}  forState:UIControlStateNormal];

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

    

    UIView* titleView = [[UIView  alloc]  initWithFrame:CGRectMake(scrrenW*0.35,0,scrrenW*0.5,44)]; // 改变titleView的frame

    [titleView addSubview:segmentCtr]; //  把你想要加进去的View加入到titleView

    self.navigationItem.titleView = titleView;