如何将下拉菜单添加到iOS中的导航栏标题

问题描述：

我想在这些屏幕截图中制作类似于下拉菜单的内容。我该怎么做？

I want to make something similar to the dropdown menu in these screenshots. How would I go about doing that?

何时点击标题，箭头指向上方，菜单下降。应用程序是大学菜单。

When you tap the title, the arrow points up and a menu drops down. The App Is College Menus.

答

您的应用中有很多cocoacontrol可以执行此功能：

There are lots of cocoacontrols to perform this function in your app:

适用于iOS的DropDown菜单控件

但是我认为 lmdropdownview 是最准确的。

But I think lmdropdownview is the most accurate.

我的错误， btnavigationdropdownmenu 对你要问的内容最准确（根据你的屏幕））。

My mistake, btnavigationdropdownmenu ITS the most accurate for what you are asking (according to your screens).

实施（Swift）[有关更多特殊说明和定制，请参阅自述文件]：

Implementation (Swift)[See the readme for more speceific instructions, and customization]:

let items = ["Most Popular", "Latest", "Trending", "Nearest", "Top Picks"]

let menuView = BTNavigationDropdownMenu(frame:  CGRectMake(0.0, 0.0, 300, 44), title: items.first!, items: items, containerView: self.view)

self.navigationItem.titleView = menuView

menuView.didSelectItemAtIndexHandler = {(indexPath: Int) -> () in
            println("Did select item at index: \(indexPath)")
            self.selectedCellLabel.text = items[indexPath]
}

希望有所帮助。

编辑：

感谢'rsc'获取信息， objective-c version 这个cocoacontrol：

Thanks for 'rsc' for the info, theres an objective-c version of this cocoacontrol:

    #import "PFNavigationDropdownMenu.h"


-(void)viewDidLoad{
    PFNavigationDropdownMenu *menuView = [[PFNavigationDropdownMenu alloc]initWithFrame:CGRectMake(0, 0, 300, 44)title:items.firstObjects items:items containerView:self.view];

    menuView.didSelectItemAtIndexHandler = ^(NSUInteger indexPath){
            NSLog(@"Did select item at index: %ld", indexPath);
            self.selectedCellLabel.text = items[indexPath];
        };

        self.navigationItem.titleView = menuView;

    }

如何将下拉菜单添加到iOS中的导航栏标题

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