iphone开发之UISegmentedControl 学习随笔

原文地址：iphone开发之UISegmentedControl 学习随笔 作者：若水一叶 //代码创建UISegmentedControl及基本设置

//自己代码中常用的

                  UISegmentedControl *segmentedControl = [[UISegmentedControl alloc]initWithFrame:CGRectMake(120, 4, 150,40)];             

                  [segmentedControl insertSegmentWithTitle:@"first" atIndex:0animated:YES];

                  [segmentedControl insertSegmentWithTitle:@"second" atIndex:1animated:YES];

                  segmentedControl.segmentedControlStyle =UISegmentedControlStyleB ordered;//设置样式

                  [segmentedControl setSelectedSegmentIndex:0];//首先显示index=0的内容

                  segmentedControl.momentary =YES;      //设置在点击后是否恢复原样

                  segmentedControl.multipleTouchEnabled=NO;        //可触摸

                  [segmentedControl addTarget:self action:@selector(Selectbutton:)forControlEvents:UIControlEventValueChang ed];

                  UIBarButtonItem *segButton = [[UIBarButtonItem alloc]initWithCustomView:segmentedControl];

                  [segmentedControl release];

            //将UISegmentedControl添加到UINavigationController上

                  self.navigationItem.rightBarButtonItem = segButton;                             

//其他代码，别人的

1. // Implement viewDidLoad to do additional setup after loading the view, typically from a nib.  
2. - (void)viewDidLoad {  
3.     NSArray *segmentedArray = [[NSArray alloc]initWithObjects:@"1",@"2",@"3",@"4",nil];  
4.     //初始化UISegmentedControl  
5.     UISegmentedControl *segmentedTemp = [[UISegmentedControl alloc]initWithItems:segmentedArray];  
6.     segmentedControl = segmentedTemp;  
7.     segmentedControl.frame = CGRectMake(60.0, 10.0, 200.0, 50.0);  
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.     //获取指定索引选项的图片imageForSegmentAtIndex：  
16.     UIImageView *imageForSegmentAtIndex = [[UIImageView alloc]initWithImage:[segmentedControl imageForSegmentAtIndex:1]];  
17.     imageForSegmentAtIndex.frame = CGRectMake(60.0, 100.0, 30.0, 30.0);  
18.     //获取指定索引选项的标题titleForSegmentAtIndex  
19.     UILabel *titleForSegmentAtIndex = [[UILabel alloc]initWithFrame:CGRectMake(100.0, 100.0, 30.0, 30.0)];  
20.     titleForSegmentAtIndex.text = [segmentedControl titleForSegmentAtIndex:0];  
21.     //获取总选项数segmentedControl.numberOfSegments  
22.     UILabel *numberOfSegments = [[UILabel alloc]initWithFrame:CGRectMake(140.0, 100.0, 30.0, 30.0)];  
23.     numberOfSegments.text = [NSString stringWithFormat:@"%d",segmentedControl.numberOfSegments];  
24.     //获取指定索引选项的宽度widthForSegmentAtIndex：  
25.     UILabel *widthForSegmentAtIndex = [[UILabel alloc]initWithFrame:CGRectMake(180.0, 100.0, 70.0, 30.0)];  
26.     widthForSegmentAtIndex.text = [NSString stringWithFormat:@"%f",[segmentedControl widthForSegmentAtIndex:2]];  
27.     segmentedControl.selectedSegmentIndex = 2;//设置默认选择项索引  
28.     segmentedControl.tintColor = [UIColor redColor];  
29.     segmentedControl.segmentedControlStyle = UISegmentedControlStylePlain;//设置样式  
30.     segmentedControl.momentary = YES;//设置在点击后是否恢复原样  
31.     [segmentedControl setEnabled:NO forSegmentAtIndex:4];//设置指定索引选项不可选  
32.     BOOL enableFlag = [segmentedControl isEnabledForSegmentAtIndex:4];//判断指定索引选项是否可选  
33.     NSLog(@"%d",enableFlag);  
34.     [self.view addSubview:widthForSegmentAtIndex];  
35.     [self.view addSubview:numberOfSegments];  
36.     [self.view addSubview:titleForSegmentAtIndex];  
37.     [self.view addSubview:imageForSegmentAtIndex];  
38.     [self.view addSubview:segmentedControl];  
39.     [widthForSegmentAtIndex release];  
40.     [numberOfSegments release];  
41.     [titleForSegmentAtIndex release];  
42.     [segmentedTemp release];  
43.     [imageForSegmentAtIndex release];  
44.     //移除所有选项  
45.     //[segmentedControl removeAllSegments];  
46.     [super viewDidLoad];  
47. }