循环 创建 UIButton 并添加选中状态 （单选和多选）

自己封装一个View

//在.h声明@interface SelectView : UIView@property(nonatomic,assign)NSInteger selectIndex;- (instancetype)initWithTitle:(NSString *)title andItemArrar:(NSArray *)items;@end//在.m里面实现#import "SelectView.h"#import "Masonry.h"@interface SelectView()@property(nonatomic,strong)UILabel * titleLabel;@property(nonatomic,strong)UIButton * selectBtn;@property(nonatomic,strong)NSString * title;@property(nonatomic,strong)NSArray * items;@end@implementation SelectView- (instancetype)initWithTitle:(NSString *)title andItemArrar:(NSArray *)items{    if (! (self = [super init]))        return nil;    self.backgroundColor = [UIColor yellowColor];    _title = title;    _items = items;    [self addSubview:self.titleLabel];    [self layoutPageFrame];    [self addSubview:self.selectBtn];    return self;}//点击事件- (void)selectBtnClick:(UIButton *)sender{ //多选模式 //    if (!sender.selected) {//        [sender setBackgroundColor:[UIColor brownColor]];//    }else{//        [sender setBackgroundColor:[UIColor groupTableViewBackgroundColor]];//    }//    sender.selected = !sender.selected;//单选模式    if (_selectBtn == nil){        sender.selected = YES;        _selectBtn = sender;    }   else  if (_selectBtn !=nil &&_selectBtn == sender){       sender.selected = YES;    } else if (_selectBtn!= sender && _selectBtn!=nil){        _selectBtn.selected = NO;        sender.selected = YES;        _selectBtn = sender;    }    _selectIndex = sender.tag;}- (void)layoutPageFrame{    [_titleLabel mas_makeConstraints:^(MASConstraintMaker *make) {        make.left.equalTo(self.mas_left).offset(10);        make.top.equalTo(self.mas_top).offset(5);        make.height.mas_equalTo(25);        make.width.mas_equalTo(360);    }];}- (UILabel *)titleLabel{    if (_titleLabel == nil) {        _titleLabel = [[UILabel alloc]init];         _titleLabel.backgroundColor = [UIColor orangeColor];        _titleLabel.font = [UIFont systemFontOfSize:15.0];        _titleLabel.text = _title;        _titleLabel.textColor = [UIColor blackColor];    }    return _titleLabel;}- (UIButton *)selectBtn{    if (_selectBtn == nil) {        if (_items>0) {            for (int i = 0;  i <_items.count; i ++) {                _selectBtn = [UIButton buttonWithType:UIButtonTypeCustom];                [_selectBtn.titleLabel setFont:[UIFont systemFontOfSize:14.0]];                [_selectBtn setTitle:[_items objectAtIndex:i] forState:UIControlStateNormal];                 [_selectBtn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];                _selectBtn.backgroundColor = [UIColor whiteColor];                [_selectBtn setTitleColor:[UIColor blueColor] forState:UIControlStateSelected];                //单选用到的                [_selectBtn setBackgroundImage:[UIImage imageNamed:@"normal.png"] forState:UIControlStateNormal];                [_selectBtn setBackgroundImage:[UIImage imageNamed:@"selected.png"] forState:UIControlStateSelected];                CGFloat tipDescW =95.0;                CGFloat tipDescH =30.0;                int totalColumns = 3;//                CGFloat marginX = (365-totalColumns*tipDescW)/(totalColumns +1);                int row = i/totalColumns;                int col = i%totalColumns;                _selectBtn.frame = CGRectMake(marginX+ col*(marginX + tipDescW), 40+(row* tipDescH)+(row * 20), tipDescW, tipDescH);                _selectBtn.tag =i;                [self addSubview:_selectBtn];                [_selectBtn addTarget:self action:@selector(selectBtnClick:) forControlEvents:UIControlEventTouchUpInside];            }        }    }    return _selectBtn;}@end

用的时候在Controller里面 直接使用就可以了

 NSArray * items = @[@"1人",@"2人",@"3人",@"四人",@"5人"];    SelectView * selectView = [[SelectView alloc]initWithTitle:@"入住人数" andItemArrar:items];    CGFloat selectViewH = (items.count/3+1) * 60 + 40;    selectView.frame = CGRectMake(0, 150, self.view.frame.size.width, selectViewH);    [self.view addSubview:selectView];