将工具栏添加到 UITableViewController

问题描述

将 UIToolBar 添加到 UITableViewController 的最简单方法是什么?我依赖于编辑功能，所以我不能轻易将 UITableViewController 更改为 UIViewController.

What is the simplest way to add UIToolBar to UITableViewController? I'm depending on edit functionality, so I can't change UITableViewController to UIViewController easily.

推荐答案

没问题，UITableViewController是UIViewController的子类.碰巧的是，在 iPhone OS 3.0 中，任何 UIViewController (和子类) 都可以与 UINavigationController 一起工作，以提供上下文感知工具栏.

No problem at all, UITableViewController is a subclass of UIViewController. And it so happens that in iPhone OS 3.0 any UIViewController (and subclasses) can work in conjunction with a UINavigationController to provide a context aware toolbar.

为了使其工作，您必须:

In order for this to work you must:

• 确保使用 UINavigationController 来包含所有需要工具栏的视图控制器.
• 设置需要工具栏的视图控制器的 toolbarsItems 属性.

• Make sure that you use a UINavigationController to contain all your view controllers that needs a toolbar.
• Set the toolbarsItems property of the view controller that wants a toolbar.

这几乎就像设置视图控制器的标题一样简单，并且应该以相同的方式完成.很可能通过覆盖 initWithNibName:bundle: 初始化程序.举个例子:

This is almost as easy as as setting the view controller's title, and should be done the same way. Most probably by overriding the initWithNibName:bundle: initializer. As an example:

-(id)initWithNibName:(NSString*)name bundle:(NSBundle*)bundle;
{
  self = [super initWithNibName:name bundle:bundle];
  if (self) {
    self.title = @"My Title";
    NSArray* toolbarItems = [NSArray arrayWithObjects:
        [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd 
                                                      target:self
                                                      action:@selector(addStuff:)],
        [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSearch 
                                                      target:self
                                                      action:@selector(searchStuff:)],
        nil];
    [toolbarItems makeObjectsPerformSelector:@selector(release)];
    self.toolbarItems = toolbarItems;
    self.navigationController.toolbarHidden = NO;
  }
  return self;
}

您还可以使用 setToolbarItems:animated: 而不是分配给 toolbarItems 属性，以动态添加和删除工具栏项.

You can also use setToolbarItems:animated: instead of assigning to the toolbarItems property, to add and remove toolbar items in an animated fashion on the fly.

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