搜索栏 - 在导航栏取消按钮 [英] Search Bar - Cancel Button in Navigation Bar

问题描述

我在做导航栏搜索栏。当我编辑我没有在导航栏右侧的取消按钮。

试过：

  FUNC searchBarTextDidBeginEditing（搜索栏：的UISearchBar）{    VAR barButton =的UIBarButtonItem（标题：取消，风格：UIBarButtonItemStyle.Done，目标：自我，行动​​：）
    self.navigationItem.rightBarButtonItem = barButton
}
 

编辑：

我添加了搜索栏导航栏是这样的：

 懒VAR搜索栏：=的UISearchBar的UISearchBar（帧：CGRectMake（0，0，300，20））        sea​​rchBar.placeholder =Hľadať
        sea​​rchBar.barStyle = UIBarStyle.BlackTranslucent
        VAR leftNavBarButton =的UIBarButtonItem（customView：搜索栏）
        self.navigationItem.leftBarButtonItem = leftNavBarButton
 

解决方案

做到这一点是这样的：

  FUNC searchBarShouldBeginEditing（搜索栏：的UISearchBar） -  GT;布尔{
    VAR cancelSearchBarButtonItem =的UIBarButtonItem（标题：取消，风格：UIBarButtonItemStyle.Plain，目标：自我，动作：cancelBarButtonItemClicked）
    self.navigationItem.setRightBarButtonItem（cancelSearchBarButtonItem，动画：真）
    返回true
}
 

而在取消处理程序：

  FUNC searchBarCancelButtonClicked（搜索栏：的UISearchBar）{
    //关闭键盘
    sea​​rchBar.resignFirstResponder（）    //如果您使用的是搜索控制器
    // self.searchDisplayControllerCustom.setActive（假，动画：真）    //删除取消按钮
    self.navigationItem.setRightBarButtonItem（零，动画：真）
}FUNC cancelBarButtonItemClicked（）{
    self.searchBarCancelButtonClicked（self.searchBar）
}
 

和设置正确的颜色导航栏标题文字：

  //这将设置文本颜色为应用程序的所有导航栏
//在启动应用程序的委托执行此操作
UINavigationBar.appearance（）titleTextAttributes = [NSForegroundColorAttributeName：UIColor.whiteColor（）]
 

和添加代理：

  searchBar.delegate =自
 

I'm doing Search Bar in Navigation Bar. When I'm editing I don't have Cancel Button on right side of navigation Bar.

Tried:

func searchBarTextDidBeginEditing(searchBar: UISearchBar) {

    var barButton = UIBarButtonItem(title: "Cancel", style: UIBarButtonItemStyle.Done, target: self, action: "")
    self.navigationItem.rightBarButtonItem = barButton
}

EDIT:

I added search bar to nav bar like this:

lazy var searchBar:UISearchBar = UISearchBar(frame: CGRectMake(0, 0, 300, 20))

        searchBar.placeholder = "Hľadať"
        searchBar.barStyle = UIBarStyle.BlackTranslucent
        var leftNavBarButton = UIBarButtonItem(customView:searchBar)
        self.navigationItem.leftBarButtonItem = leftNavBarButton

解决方案

Do it in this way:

func searchBarShouldBeginEditing(searchBar: UISearchBar) -> Bool {
    var cancelSearchBarButtonItem = UIBarButtonItem(title: "Cancel", style: UIBarButtonItemStyle.Plain, target: self, action: "cancelBarButtonItemClicked")
    self.navigationItem.setRightBarButtonItem(cancelSearchBarButtonItem, animated: true)
    return true
}

And in the "Cancel" handler:

func searchBarCancelButtonClicked(searchBar: UISearchBar) {
    // closes the keyboard
    searchBar.resignFirstResponder()

    // If you are using a search controller
    // self.searchDisplayControllerCustom.setActive(false, animated: true)

    // remove the cancel button
    self.navigationItem.setRightBarButtonItem(nil, animated: true)
}

func cancelBarButtonItemClicked() {
    self.searchBarCancelButtonClicked(self.searchBar)
}

And set the correct color for the navigation bar title text:

// This sets the textcolor for all navigation bars in the app
// Do this in the app delegate on startup
UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName : UIColor.whiteColor()]

And add the delegate:

searchBar.delegate = self

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