0、在需要创建的地方,command+n创建

cell的创建.png

1、纯代码创建cell

1.1自定义等高cell的时候,子控件应该添加在initWithStyle方法中,子控件应该添加在contentView上

@interface gonggaoCell()
/** 标题 */
@property (nonatomic, weak) UILabel *gonggGaoTitleLabel;

@end

-(instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
  
    if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
//        self.contentView.backgroundColor = [UIColor redColor];
        //如不需要变更可直接用initWithFrame来写位置,
        UILabel *titleLabel = [[UILabel alloc] init];
        titleLabel.textColor = main16Color(0x333333);
        titleLabel.font = [UIFont systemFontOfSize:17.0f];
        [self.contentView addSubview:titleLabel];
        self.gonggGaoTitleLabel = titleLabel;
   }
   return self; 
}
//设置位置
-(void)layoutSubviews
{
    [super layoutSubviews];
    self.gonggGaoTitleLabel.frame = CGRectMake(x, y, width, height);
}

1.2、纯代码自定义不等高cell

这样的样式cell,一般需要创建一个中间的model层,来计算各个控件的位置,
像这样

#import <UIKit/UIKit.h>

@interface gonggaomesaageModel : NSObject
/** 标题 */
@property (nonatomic, copy) NSString *noticetitle;
/** noticeid */
@property (nonatomic, copy) NSString *noticeid;
/** 正文(内容) */
@property (nonatomic, copy) NSString *noticedesc;
/** 已读 未读 */
@property (nonatomic, copy) NSString *noticeflag;
/** 时间 */
@property (nonatomic, copy) NSString *noticetime;

/** 消息总数 */
@property (nonatomic, copy) NSString *count;
/** 消息总数 */
@property (nonatomic, copy) NSString *unreadnums;
/** 消息总数 */
@property (nonatomic, copy) NSArray *items;

/** frame数据***/
/** 标题的frame */
@property (nonatomic, assign) CGRect titleFrame;
/** 标题的frame */
@property (nonatomic, assign) CGRect noticeflagFrame;
/** 正文的frame */
@property (nonatomic, assign) CGRect fengeFrame;
/** 正文的frame */
@property (nonatomic, assign) CGRect textconstentFrame;
/** 时间的frame */
@property (nonatomic, assign) CGRect shijianFrame;
/** 下部假分割的frame */
@property (nonatomic, assign) CGRect xiafengeFrame;


/** 查看详情Viewframe */
@property (nonatomic, assign) CGRect xiangqingFrame;
/** 查看详情的frame */
@property (nonatomic, assign) CGRect chakanFrame;
/** cell的高度 */
@property (nonatomic, assign) CGFloat cellHeight;
@end

创建cell,在cell.h文件中引入model

#import <UIKit/UIKit.h>
@class gonggaomesaageModel;
@interface gonggaoCell : UITableViewCell
@property(nonatomic , strong)   gonggaomesaageModel * messageModel;
@end

cell.m实现

#import "gonggaoCell.h"
#import "gonggaomesaageModel.h"
@interface gonggaoCell()
/** 标题 */
@property (nonatomic, weak) UILabel *gonggGaoTitleLabel;
/** 分割线 */
@property (nonatomic, weak) UIView *fengeView;
@property (nonatomic, weak) UIView *dibuView;
/** 查看详情 */
@property (nonatomic, weak) UIView *xiangqingView;
/** 内容 */
@property (nonatomic, weak) UILabel *gonggGaoContentLabel;
/** 时间 */
@property (nonatomic, weak) UILabel *gonggGaoTimeLabel;
/** 查看详情*/
@property (nonatomic, weak) UILabel *chakanLabel;
@end
@implementation gonggaoCell

-(instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
//        self.contentView.backgroundColor = [UIColor redColor];
        UILabel *titleLabel = [[UILabel alloc] init];
        titleLabel.textColor = main16Color(0x333333);
        titleLabel.font = [UIFont systemFontOfSize:17.0f];
        [self.contentView addSubview:titleLabel];
        self.gonggGaoTitleLabel = titleLabel;
        
        UIView *fengeView = [[UIView alloc]init];
        fengeView.backgroundColor = main16Color(0xEEEEEE);
        [self.contentView addSubview:fengeView];
        self.fengeView = fengeView;
        
        UILabel *contentLabel = [[UILabel alloc] init];
        contentLabel.font = [UIFont systemFontOfSize:17.0f];
        contentLabel.numberOfLines = 0;
        contentLabel.textColor = main16Color(0x666666);
        [self.contentView addSubview:contentLabel];
        self.gonggGaoContentLabel = contentLabel;
        
        UILabel *TimeLabel = [[UILabel alloc] init];
        TimeLabel.font = [UIFont systemFontOfSize:17.0f];
        TimeLabel.textColor = main16Color(0xBBBBBB);
        [self.contentView addSubview:TimeLabel];
        self.gonggGaoTimeLabel = TimeLabel;
        
        UIView *dibuView = [[UIView alloc]init];
        dibuView.backgroundColor = main16Color(0xF5F5F5);
        [self.contentView addSubview:dibuView];
        self.dibuView = dibuView;
        
        UIView *xiangqingView = [[UIView alloc]init];
        xiangqingView.backgroundColor = mainWhiteColor;
        [self.contentView addSubview:xiangqingView];
        self.xiangqingView = xiangqingView;
        UIView *fengexianView = [[UIView alloc]initWithFrame:CGRectMake(20, 0, mainScreenW-20, 1)];
        fengexianView.backgroundColor = main16Color(0xEEEEEE);
        [xiangqingView addSubview:fengexianView];
        UILabel *chakanLabel = [[UILabel alloc] init];
        chakanLabel.font = [UIFont systemFontOfSize:17.0f];
        chakanLabel.textColor = main16Color(0x999999);
        [xiangqingView addSubview:chakanLabel];
        self.chakanLabel = chakanLabel;
        
        
    }
    return self;
}
-(void)setMessageModel:(gonggaomesaageModel *)messageModel
{
    _messageModel = messageModel;
    self.gonggGaoTitleLabel.text = messageModel.noticetitle;
    self.gonggGaoContentLabel.text = messageModel.noticedesc;
    self.gonggGaoTimeLabel.text = [self timeWithTimeIntervalString:messageModel.noticetime];
    self.chakanLabel.text = @"查看详情   》";
}

-(void)layoutSubviews
{
    [super layoutSubviews];
    self.gonggGaoTitleLabel.frame = self.messageModel.titleFrame;
    self.fengeView.frame = self.messageModel.fengeFrame;
    self.gonggGaoContentLabel.frame = self.messageModel.textconstentFrame;
    self.gonggGaoTimeLabel.frame = self.messageModel.shijianFrame;
    self.dibuView.frame = self.messageModel.xiafengeFrame;
    self.xiangqingView.frame = self.messageModel.xiangqingFrame;
    self.chakanLabel.frame = self.messageModel.chakanFrame;
}
- (NSString *)timeWithTimeIntervalString:(NSString *)timeString
{
    // 格式化时间
    NSDateFormatter* formatter = [[NSDateFormatter alloc] init];
    formatter.timeZone = [NSTimeZone timeZoneWithName:@"beijing"];
    [formatter setDateStyle:NSDateFormatterMediumStyle];
    [formatter setTimeStyle:NSDateFormatterShortStyle];
    [formatter setDateFormat:@"YYYY-MM-dd"];
    // 毫秒值转化为秒
    NSDate* date = [NSDate dateWithTimeIntervalSince1970:[timeString doubleValue]/ 1000.0];
    NSString* dateString = [formatter stringFromDate:date];
    return dateString;
}
@end