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创建UISegmentControl对象
UISegmentedControl *segmented = [[UISegmentedControl alloc] initWithItems:@[@"北京", @"上海", @"广州"]];
segmented.frame = CGRectMake(100, 100, 200, 40);
segmented.selectedSegmentIndex = 2; //默认选中某个分段,按下标
segmented.tintColor = [UIColor greenColor]; //设置segmentControl的渲染颜色
[segmented setWidth:60 forSegmentAtIndex:1]; //单独设置某个分段的宽(此方法会在原有宽度的基础上压缩其它分段的宽度).
//设置分段控件上的字体的属性
NSDictionary *textDic = @{NSFontAttributeName:[UIFont SystemFontOfSize:16], NSForegroundColorAttributeName:[UIColor redColor] };
[segmented setTittleTextAttributes:textDic forState:UIControlStateNormal];
[segmented addTarget:self action:@selector(handleSegment:) forControlEvents:UIControlEventValueChanged]; //添加点击事件
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原文地址：http://www.cnblogs.com/lion-witcher/p/5095031.html
