在导航栏添加搜索框

 

    //导航条的搜索条

        UISearchBar *searchBar = [[UISearchBar alloc]initWithFrame:CGRectMake(500.0f,0.0f,250.0f,44.0f)];

        searchBar.delegate = self;

        [searchBar setPlaceholder:@"搜索"];

         

        //将搜索条放在一个UIView上

        UIView *searchView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 768, 44)];

        searchView.backgroundColor = [UIColor clearColor];

        [searchView addSubview:searchBar];

         

        self.navigationItem.titleView = searchView;

      
// 自定义导航栏的背景：
[[UINavigationBar appearance] setBarTintColor:[UIColor redColor]];   //@{}代表Dictionary   

 [[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName:[UIColor whiteColor]}];