在UITableView顶部制作简单的UISegmentControl实例方法

// http://www.tuicool.com/articles/yUfURj 使用方法

如上图: 分两步:

一、创建320长度背景，高不超过40最好

//segment背景图
UIImageView *segBgImg = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"segmented_bg.png"]];
[segBgImg setUserInteractionEnabled:YES];
[segBgImg setFrame:CGRectMake(0, 44, 320, 38)];

//segment实例对象及初始化
UISegmentedControl *segment = [[UISegmentedControl alloc] initWithItems:nil];
segment.selectedSegmentIndex = 0;
[segment insertSegmentWithImage:[UIImage imageNamed:@"segmented_price_all_selected.png"] atIndex:0 animated:NO];
[segment insertSegmentWithImage:[UIImage imageNamed:@"segmented_price_free.png"] atIndex:1 animated:NO];
segment.frame = CGRectMake(10, 5, 184, 28);

[segment setMomentary:YES];
[segment addTarget:self action:@selector(segmentClick:) forControlEvents:UIControlEventValueChanged];
[segBgImg addSubview:segment];
[segment release];

[self.view addSubview:segBgImg];
[segBgImg release];

二、segmentClick相应事件中选中当前焦点 

//选择时触发
- (void)segmentClick:(UISegmentedControl *)segment
{
    NSInteger index = segment.selectedSegmentIndex;
    switch (index) {
        case 0: //全部
            [segment setImage:[UIImage imageNamed:@"segmented_price_all_selected.png"] forSegmentAtIndex:0];
            [segment setImage:[UIImage imageNamed:@"segmented_price_free.png"] forSegmentAtIndex:1];
            break;
        case 1: //免费
            [segment setImage:[UIImage imageNamed:@"segmented_price_all.png"] forSegmentAtIndex:0];
            [segment setImage:[UIImage imageNamed:@"segmented_price_free_selected.png"] forSegmentAtIndex:1];
            break;
    }
}

1. - (void)viewDidLoad {  
2.     NSArray *segmentedArray = [[NSArray alloc]initWithObjects:@"1",@"2",@"3",@"4",nil];  
3.     //初始化UISegmentedControl  
4.     UISegmentedControl * segmentedControl = [[UISegmentedControl alloc]initWithItems:segmentedArray];  
5.     segmentedControl.frame = CGRectMake(60.0, 10.0, 200.0, 50.0);  
6.    segmentedControl.segmentedControlStyle = 2;
7.       
8.     [segmentedControl setTitle:@"two" forSegmentAtIndex:1];//设置指定索引的题目  
9.     [segmentedControl setImage:[UIImage imageNamed:@"lan.png"] forSegmentAtIndex:3];//设置指定索引的图片  
10.     [segmentedControl insertSegmentWithImage:[UIImage imageNamed:@"mei.png"] atIndex:2 animated:NO];//在指定索引插入一个选项并设置图片  
11.     [segmentedControl insertSegmentWithTitle:@"insert" atIndex:3 animated:NO];//在指定索引插入一个选项并设置题目  
12.     [segmentedControl removeSegmentAtIndex:0 animated:NO];//移除指定索引的选项  
13.     [segmentedControl setWidth:70.0 forSegmentAtIndex:2];//设置指定索引选项的宽度  
14.     [segmentedControl setContentOffset:CGSizeMake(10.0,10.0) forSegmentAtIndex:1];//设置选项中图片等的左上角的位置  
15.       
16.     //获取指定索引选项的图片imageForSegmentAtIndex：  
17.     UIImageView *imageForSegmentAtIndex = [[UIImageView alloc]initWithImage:[segmentedControl imageForSegmentAtIndex:1]];  
18.     imageForSegmentAtIndex.frame = CGRectMake(60.0, 100.0, 30.0, 30.0);  
19.       
20.     //获取指定索引选项的标题titleForSegmentAtIndex  
21.     UILabel *titleForSegmentAtIndex = [[UILabel alloc]initWithFrame:CGRectMake(100.0, 100.0, 30.0, 30.0)];  
22.     titleForSegmentAtIndex.text = [segmentedControl titleForSegmentAtIndex:0];  
23.       
24.     //获取总选项数segmentedControl.numberOfSegments  
25.     UILabel *numberOfSegments = [[UILabel alloc]initWithFrame:CGRectMake(140.0, 100.0, 30.0, 30.0)];  
26.     numberOfSegments.text = [NSString stringWithFormat:@"%d",segmentedControl.numberOfSegments];  
27.       
28.     //获取指定索引选项的宽度widthForSegmentAtIndex：  
29.     UILabel *widthForSegmentAtIndex = [[UILabel alloc]initWithFrame:CGRectMake(180.0, 100.0, 70.0, 30.0)];  
30.     widthForSegmentAtIndex.text = [NSString stringWithFormat:@"%f",[segmentedControl widthForSegmentAtIndex:2]];  
31.       
32.     segmentedControl.selectedSegmentIndex = 2;//设置默认选择项索引  
33.     segmentedControl.tintColor = [UIColor redColor];  
34.     segmentedControl.segmentedControlStyle = UISegmentedControlStylePlain;//设置样式  
35.     segmentedControl.momentary = YES;//设置在点击后是否恢复原样  
36.       
37.     [segmentedControl setEnabled:NO forSegmentAtIndex:4];//设置指定索引选项不可选  
38.     BOOL enableFlag = [segmentedControl isEnabledForSegmentAtIndex:4];//判断指定索引选项是否可选  
39.     NSLog(@"%d",enableFlag);  
40.       
41. }  

注： 多个segment切换时用for循环处理一下即可