UISegmentedControl的基本用法

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@UISegmentedControl类似于UIButton,它可以提供多个选择操作,响应事件,但具有很大的局限性,我们更多的是使用自定义的,不过在这里还是介绍下它的基本用法.

NSArray *segmentedArray = [[NSArrayalloc]initWithObjects:@"1",@"2",@"3",@"4",nil];    //初始化UISegmentedControl    UISegmentedControl *segmentedControl = [[UISegmentedControlalloc]initWithItems:segmentedArray];    segmentedControl.frame = CGRectMake(20.0,……)   // 设置默认选择项索引    segmentedControl.selectedSegmentIndex = 2;   segmentedControl.tintColor = [UIColor redColor];    // 有基本四种样式   segmentedControl.segmentedControlStyle = UISegmentedControlStylePlain;   segmentedControl.segmentedControlStyle = UISegmentedControlStyleBordered;   segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;   segmentedControl.segmentedControlStyle = UISegmentedControlStyleBezeled;   // 设置在点击后是否恢复原样  segmentedControl.momentary = YES;  [segmentedControl setTitle:@"two" forSegmentAtIndex:1];//设置指定索引的题目   [segmentedControl setImage:[UIImage imageNamed:@"btn_jyy.png"] forSegmentAtIndex:3];//设置指定索引的图片    // 在指定索引插入一个选项并设置图片  [segmentedControl insertSegmentWithImage:[UIImage imageNamed:@"mei.png"] atIndex:2 animated:NO];   // 在指定索引插入一个选项并设置题目   [segmentedControl insertSegmentWithTitle:@"insert" atIndex:3 animated:NO];   // 移除指定索引的选项   [segmentedControl removeSegmentAtIndex:0 animated:NO];   // 设置指定索引选项的宽度   [segmentedControl setWidth:70.0 forSegmentAtIndex:2];   // 设置选项中图片等的左上角的位置   [segmentedControl setContentOffset:CGSizeMake(10.0,10.0) forSegmentAtIndex:4];     //获取指定索引选项的图片imageForSegmentAtIndex：   UIImageView *imageForSegmentAtIndex = [[UIImageViewalloc]initWithImage:[segmentedControl imageForSegmentAtIndex:1]];   imageForSegmentAtIndex.frame = CGRectMake(60.0, 120.0, 30.0, 30.0);  ;     //获取指定索引选项的标题titleForSegmentAtIndex   UILabel *titleForSegmentAtIndex = [[UILabel alloc]initWithFrame:CGRectMake(100.0, 160.0, 30.0, 30.0)];   titleForSegmentAtIndex.text = [segmentedControl titleForSegmentAtIndex:0];      //获取总选项数segmentedControl.numberOfSegments   UILabel *numberOfSegments = [[UILabel alloc]initWithFrame:CGRectMake(140.0, 170.0, 30.0, 30.0)];   numberOfSegments.text = [NSString stringWithFormat:@"%d",segmentedControl.numberOfSegments];   //获取指定索引选项的宽度widthForSegmentAtIndex：   UILabel *widthForSegmentAtIndex = [[UILabel alloc]initWithFrame:CGRectMake(180.0, 210.0, 70.0, 30.0)];   widthForSegmentAtIndex.text = [NSString stringWithFormat:@"%f",[segmentedControl widthForSegmentAtIndex:2]];      // [segmentedControl setEnabled:NO forSegmentAtIndex:4];//设置指定索引选项不可选    // BOOL enableFlag = [segmentedControl isEnabledForSegmentAtIndex:4];//判断指定索引选项是否可选     [mySegmentedControladdTarget:selfaction:@selector(didClicksegmentedControlAction:)forControlEvents:UIControlEventValueChanged];  -(void)didClicksegmentedControlAction:(UISegmentedControl *)Seg{  NSInteger Index = Seg.selectedSegmentIndex;  NSLog(@"Index %i", Index);  switch (Index) {    case 0:      [self selectmyView1];      break;    case 1:      [self selectmyView2];      break;    case 2:      [self selectmyView3];      break;    case 3:      [self selectmyView4];      break;…………………………………….    default:      break;  }}