// 分段控件
UISegmentedControl *segmentC=[[UISegmentedControl alloc]initWithItems:@[@"消息",@"电话"]];
segmentC.w=120;
segmentC.selectedSegmentIndex=0;
self.navigationItem.titleView=segmentC;
//搜索栏
UISearchBar *sB=[[UISearchBar alloc]initWithFrame:CGRectMake(0,0,[UIScreen mainScreen].bounds.size.width,44)];
[sB setPlaceholder:@"搜索"];
[self.tableView addSubview:sB];