UISegmentedControl分段控件的基本概念和使用方法

转自:博客地址：http://blog.csdn.net/developer_jiangqq)

Author:hmjiangqq

Email:jiangqqlmj@163.com

UISegmentedControl

首先看下官网介绍:



A

UISegmentedControl

object is a horizontal control made of multiple segments, each segment functioning as a discrete button. A segmented control affords
a compact means to group together a number of controls.

A segmented control can display a title (an

NSString

object)
or an image (

UIImage

object).
The

UISegmentedControl

object automatically resizes segments to fit proportionally within their superview unless they have a specific width set. When
you add and remove segments, you can request that the action be animated with sliding and fading effects.
分段控件是一种选择控件，功能有点类似于Windows中的单选按钮，由两端或者更多段组成，

每个段相当于一个独立的按钮。这控件一般有两种样式-Plain&Bordered样式和Bar样式，

Bordered样式是在Plain样式上面加上了一个边框.Plain和Bordered样式中每一段都可以设置文本

和添加图片.Bar样式整体来说比较窄，在其中我们一般不会放置图片。

常用的属性和方法如下:





实例代码如下:

[objc] view
plaincopy





- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

{

self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];

// Override point for customization after application launch.

self.window.backgroundColor = [UIColor whiteColor];

NSArray *array=@[@"搜索",@"选择",@"视频",@"图片"];

UISegmentedControl *segmentControl=[[UISegmentedControl alloc]initWithItems:array];

segmentControl.segmentedControlStyle=UISegmentedControlStyleBordered;

//设置位置 大小

segmentControl.frame=CGRectMake(60, 100, 200, 40);

//默认选择

segmentControl.selectedSegmentIndex=1;

//设置背景色

segmentControl.tintColor=[UIColor greenColor];

//设置监听事件

[segmentControl addTarget:self action:@selector(change:) forControlEvents:UIControlEventValueChanged];

[self.window addSubview:segmentControl];

[segmentControl release];

[self.window makeKeyAndVisible];

return YES;

}

-(void)change:(UISegmentedControl *)segmentControl{

NSLog(@"segmentControl %d",segmentControl.selectedSegmentIndex);

}

运行截图: