分段控件UISegmentedControl

UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:@[@"全部商家", @"优惠商家", @"我的"]];
segmentedControl.center = CGPointMake(182, 45);

// 每个segment的大小默认平分整个segmentedControl的大小，如果把apportionsSegmentWidthsByContent设置为YES，会根据内容来分配每一个segment的大小。
segmentedControl.apportionsSegmentWidthsByContent = YES;

// 设置当前选中segment下标
segmentedControl.selectedSegmentIndex = 1;

// 选中瞬间有效果，之后没有，恢复（不怎么用）
// segmentedControl.momentary = YES;

// 字体颜色
segmentedControl.tintColor = [UIColor orangeColor];
// segmentedControl.frame = CGRectMake(10, 30, 345, 30);

// 给segmentedControl添加事件
[segmentedControl addTarget:self action:@selector(doTapSegmentedControl:) forControlEvents:(UIControlEventValueChanged)];

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

- (void)doTapSegmentedControl:(UISegmentedControl *)segmentControl
{
NSLog(@"O(∩_∩)O哈哈~");
switch (segmentcontrol.selectedSegmentIndex) {
case 0:
self.view.backgroundColor = [UIColor redColor];
break;
case 1:
self.view.backgroundColor = [UIColor yellowColor];
break;
case 2:
self.view.backgroundColor = [UIColor blueColor];
break;

default:
break;
}
}