循环按钮,并且选中 (附效果图)

效果图

以下代码均可全部复制,直接到上图的效果图

#import "ViewController.h"

@interface ViewController ()

//设置属性

@property (nonatomic,strong)NSMutableDictionary *aihao;

@property (nonatomic,strong)UILabel *carheard;

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    

    [self creatUI];

}

#define Screen  [UIScreen mainScreen]

-(void)creatUI

{

    NSArray* citys = @[@"旅游",@"汽车",@"房产",@"美食",@"上网",@"投资",@"体育运动",@"影视",@"电影",@"户外",@"阅读"];

    self.aihao = [NSMutableDictionary dictionary];

    for (int i = 0; i<citys.count; i++) {

        UILabel* carheard;

        carheard = [[UILabel alloc]initWithFrame:CGRectMake((i%4)*Screen.bounds.size.width/4+30, (i/4)*Screen.bounds.size.height/15+50 , Screen.bounds.size.width/4, 30)];

        

        UIButton* select = [[UIButton alloc]initWithFrame:CGRectMake(carheard.frame.origin.x-20,carheard.frame.origin.y+8,15,15)];

        [select setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];

        [select addTarget:self action:@selector(selectedion:) forControlEvents:UIControlEventTouchUpInside];

        [select setBackgroundImage:[UIImage imageNamed:@"xuanze_default_03"] forState:UIControlStateNormal];

        [carheard setText:citys[i]];

        [carheard setBackgroundColor:[UIColor whiteColor]];

        [carheard setFont:[UIFont systemFontOfSize:14]];

        [self.view addSubview:carheard];

        [self.view addSubview:select];

    }

}

-(void)selectedion:(UIButton*)sender{

    if(sender.selected)

    {

        [sender setSelected:NO];

        [sender setBackgroundImage:[UIImage imageNamed:@"xuanze_default_03"] forState:UIControlStateNormal];

        [self.aihao removeObjectForKey:sender.titleLabel.text];

        

    }else{

        [sender setSelected:YES];

        [sender setBackgroundImage:[UIImage imageNamed:@"xuanze_hover_69"] forState:UIControlStateNormal];

    }

    NSLog(@"%@",self.aihao);

}