如何以编程方式将UIToolbar添加到iOS应用? [英] How to add a UIToolbar programmatically to an iOS app?

问题描述

似乎找不到像问题标题所描述的那样的教程.我想了解仅需在​​何处声明UIToolbar，以及如何将其放入我的视图层.

Can't seem to find a tutorial which does as the question title describes. I'd like to understand just where the UIToolbar needs to be declared and how to get it onto my view layer.

推荐答案

UIToolbar是UIView的子类，因此对该问题的简短回答是:就像其他任何视图一样.

UIToolbar is a subclass of UIView, so the short answer to your question is: just like any other view.

具体地说，这是一个如何以编程方式创建工具栏的示例.此代码段中的上下文是视图控制器的viewDidLoad.

Specifically, this is an example of how to programmatically create a toolbar. The context in this snippet is viewDidLoad of a view controller.

UIToolbar *toolbar = [[UIToolbar alloc] init];
toolbar.frame = CGRectMake(0, 0, self.view.frame.size.width, 44);
NSMutableArray *items = [[NSMutableArray alloc] init];
[items addObject:[[[UIBarButtonItem alloc] initWith....] autorelease]];
[toolbar setItems:items animated:NO];
[items release];
[self.view addSubview:toolbar];
[toolbar release];

请参见 UIToolbar 和有关详细信息，请参见UIBarButtonItem 文档.

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