位运算和枚举

[//www.greatytc.com/p/4f896df73d11](位运算和枚举 原文)

使用：直接上代码了

#import <UIKit/UIKit.h>
typedef NS_ENUM(NSInteger) {
    CELL_TYPE_IMAGE = 1<<0,
    CELL_TYPE_TEXT = 1<<1,
    CELL_TYPE_VIP = 1<<2,
    CELL_TYPE_PEOPLE = 1<<3
}CELL_TYPE;
@interface KapContentShowTableViewCell : UITableViewCell
@property (nonatomic,strong) UIView *vipView;
@property (nonatomic,strong) UIImageView *imageContentView;
@property (nonatomic,assign)CELL_TYPE type;
@end

#import "KapContentShowTableViewCell.h"

@implementation KapContentShowTableViewCell

- (void)awakeFromNib {
    [super awakeFromNib];
    // Initialization code
    self.type = CELL_TYPE_IMAGE|CELL_TYPE_VIP;// vip && 有图
}

- (void)setType:(CELL_TYPE)type{
    if (type & CELL_TYPE_IMAGE) {
        // 有图
        [self.imageContentView mas_updateConstraints:^(MASConstraintMaker *make) {
            make.width.height.mas_equalTo(40);
        }];
    }
    if (type & CELL_TYPE_TEXT) {
        // 没图
        [self.imageContentView mas_updateConstraints:^(MASConstraintMaker *make) {
            make.width.height.equalTo(0);
        }];
    }
    if (type & CELL_TYPE_VIP) {
        // 会员
        self.vipView.hidden = NO;
    }
    if (type & CELL_TYPE_PEOPLE) {
        // 普通人
        self.vipView.hidden = YES;
    }
    [self layoutIfNeeded];
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];
    // Configure the view for the selected state
}

@end