在导航栏中将SearchBar设置得更高

Question

我尝试创建一个搜索栏，它现在正常工作，但我无法在状态栏下找到如何让它更高一点。 搜索栏是以编程方式创建的，我使用了以下代码：

 \min_{\sigma} \Bigg\{ \sum\limits_{i} \big((G(\sigma_i)\star S) - I_i\big)^2     + \gamma\Big((\delta_x \sigma_i)^2 + (\delta_y \sigma_i)^2\Big) \Bigg\}}]

Answer 1

你的意思是，你想要一个导航栏位置的搜索栏。如果是这种情况，请尝试在导航栏中添加搜索栏。

试试这个

var leftNavBarButton = UIBarButtonItem(customView:Yoursearchbar)
self.navigationItem.leftBarButtonItem = leftNavBarButton

你保留了一个懒惰的UISearchBar属性

lazy var searchBar:UISearchBar = UISearchBar(frame: CGRectMake(0, 0, 200, 20))

在viewDidLoad

中

searchBar.placeholder = "Your placeholder"
var leftNavBarButton = UIBarButtonItem(customView:searchBar)
self.navigationItem.leftBarButtonItem = leftNavBarButton

如果您想使用故事板，只需将搜索栏拖动为插座，然后用插座搜索栏替换惰性属性

或者只是

// create the search bar programatically since you won't be
// able to drag one onto the navigation bar


searchBar = UISearchBar()  
searchBar.sizeToFit()


// the UIViewController comes with a navigationItem property
// this will automatically be initialized for you if when the
// view controller is added to a navigation controller's stack
// you just need to set the titleView to be the search bar

navigationItem.titleView = searchBar