UI基础 选项卡

root。m

#import "RootViewController.h"

@interface RootViewController ()

@end

@implementation RootViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    //创建一个分段控件
    NSArray *array =[NSArray arrayWithObjects:@"亚洲",@"欧美",@"日韩", nil];
    UISegmentedControl *seg =[[UISegmentedControl alloc]initWithItems:array];
    
    seg.frame =CGRectMake(30, 100, 300, 50);
    [self.view addSubview:seg];
    
    //修改颜色
//    seg.backgroundColor=[UIColor yellowColor];
    seg.tintColor=[UIColor redColor];
    
    //默认选择某一个
    
    seg.selectedSegmentIndex =1;
    
    //修改标题
    [seg setTitle:@"动漫" forSegmentAtIndex:2];
    // 添加图片 png可省略后缀 jpg不可省略  设置选项卡图标
    UIImage *image =[UIImage imageNamed:@"a.jpg"];
    //防止图片被控件渲染（保持自己的颜色）
    image =[image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
    [seg setImage:image forSegmentAtIndex:0];
    
    //添加事件
    [seg addTarget:self action:@selector(selectWhich:) forControlEvents:UIControlEventValueChanged];
    
    
}
-(void)selectWhich:(UISegmentedControl *)se
{
    
    NSLog(@"%d",se.selectedSegmentIndex);
    if(se.selectedSegmentIndex==2){
        NSLog(@"正在打开动漫");
        
        
    }
}

@end