1.先创建model
.h
#import <Foundation/Foundation.h> #import <UIKit/UIKit.h> @interface LBDNewMsgListModel : NSObject @property (nonatomic, copy) NSString *activityId; @property (nonatomic, copy) NSString *activityImg; @property (nonatomic, copy) NSString *colorType; @property (nonatomic, copy) NSString *content; @property (nonatomic, copy) NSString *createdAt; @property (nonatomic, copy) NSString *remark; @property (nonatomic, copy) NSString *jump; @property (nonatomic, copy) NSString *title; @property (assign,nonatomic) CGFloat cellHeight; // cell的高度（在本model类中进行计算) @end
.m
#import "LBDNewMsgListModel.h" #import "LBDMsgCenterCell.h" @interface LBDNewMsgListModel () @property (strong, nonatomic) LBDMsgCenterCell *cell; @end @implementation LBDNewMsgListModel - (LBDMsgCenterCell *)cell { if(!_cell){ _cell = [[LBDMsgCenterCell alloc]init]; _cell.model = self; } return _cell; } - (CGFloat)cellHeight { if (_cellHeight == 0) { _cellHeight = self.cell.cellHeight; self.cell = nil; } return _cellHeight; }
2.自定义cell
.h
#import <UIKit/UIKit.h> #import "LBDNewMsgListModel.h" static NSString *cellID = @"LBDMsgCenterCell"; @protocol LBDMessageCenterCellDelagete <NSObject> @optional - (void)returnCellHeight:(CGFloat)height; @end @interface LBDMsgCenterCell : UITableViewCell @property (nonatomic, strong) UILabel *msgDateLbl; @property (nonatomic, strong) UIView *bgView; @property (nonatomic, strong) UIView *topLineView; @property (nonatomic, strong) UIImageView *msgImgView; @property (nonatomic, strong) UILabel *titleLbl; @property (nonatomic, strong) UILabel *orderNum; @property (nonatomic, strong) UILabel *contentLbl; @property (nonatomic, strong) UIView *lineView; @property (nonatomic, strong) UILabel *lookLbl; @property (nonatomic, strong) LBDNewMsgListModel *model; + (instancetype)cellWithTableView:(UITableView *)tableView; @property (nonatomic, weak) id<LBDMessageCenterCellDelagete>delegate; @property (assign,nonatomic) CGFloat cellHeight; // cell的高度 @end
.m
#import "LBDMsgCenterCell.h" #import "LBDNewMsgListModel.h" #import "NSString+Extension.h" @implementation LBDMsgCenterCell - (void)awakeFromNib { [super awakeFromNib]; // Initialization code } + (instancetype)cellWithTableView:(UITableView *)tableView { LBDMsgCenterCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID]; if (!cell) { cell = [[LBDMsgCenterCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID]; } cell.selectionStyle = UITableViewCellSelectionStyleNone; tableView.backgroundColor = [UIColor getColor:@"ececec"]; cell.backgroundColor = [UIColor getColor:@"ececec"]; return cell; } - (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier { if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) { [self drawCell]; } return self; } - (void)setModel:(LBDNewMsgListModel *)model { _model = model; if ([model.colorType isEqualToString:@"1"]) { _topLineView.hidden = NO; _msgImgView.hidden = YES; _topLineView.backgroundColor = [UIColor getColor:@"feb540"]; } else if ([model.colorType isEqualToString:@"2"]) { _topLineView.hidden = NO; _msgImgView.hidden = YES; _topLineView.backgroundColor = [UIColor getColor:@"00ade5"]; } else if ([model.colorType isEqualToString:@"3"]) { _topLineView.hidden = YES; _msgImgView.hidden = NO; [_msgImgView sd_setImageWithURL:[NSURL URLWithString:model.activityImg]]; } if ([model.jump isEqualToString:@"0"]) { _lineView.hidden = YES; _lookLbl.hidden = YES; } else if ([model.jump isEqualToString:@"1"]) { _lineView.hidden = NO; _lookLbl.hidden = NO; } _msgDateLbl.text = [Tool dateStrConverWithDateStr:model.createdAt originalType:@"yyyyMMddHHmmss" type:@"yyyy/MM/dd HH:mm"]; _titleLbl.text = model.title; _contentLbl.text = model.content; [self layoutIfNeeded]; self.cellHeight = CGRectGetMaxY(_bgView.frame); } - (void)drawCell { _msgDateLbl = [[UILabel alloc] init]; _msgDateLbl.text = @"2016/12/25 09:11"; _msgDateLbl.font = FONT(10); _msgDateLbl.textColor = [UIColor getColor:@"646464"]; _msgDateLbl.textAlignment = NSTextAlignmentCenter; [self.contentView addSubview:_msgDateLbl]; _bgView = [[UIView alloc] init]; _bgView.backgroundColor = [UIColor whiteColor]; _bgView.layer.masksToBounds = YES; _bgView.layer.cornerRadius = 10; [self.contentView addSubview:_bgView]; _msgImgView = [[UIImageView alloc] init]; _msgImgView.hidden = YES; _msgImgView.contentMode = UIViewContentModeScaleAspectFit; [_bgView addSubview:_msgImgView]; _topLineView = [[UIView alloc] init]; _topLineView.hidden = YES; [_bgView addSubview:_topLineView]; _titleLbl = [[UILabel alloc] init]; _titleLbl.font = FONT(15); _titleLbl.numberOfLines = 0; _titleLbl.textColor = [UIColor getColor:@"323232"]; [_bgView addSubview:_titleLbl]; _contentLbl = [[UILabel alloc] init]; _contentLbl.font = FONT(12); _contentLbl.numberOfLines = 0; _contentLbl.textColor = [UIColor getColor:@"969696"]; [_bgView addSubview:_contentLbl]; _lookLbl = [[UILabel alloc] init]; _lookLbl.textAlignment = NSTextAlignmentRight;; _lookLbl.text = @"立即查看"; _lookLbl.font = FONT(13); [_bgView addSubview:_lookLbl]; _lineView = [[UIView alloc] init]; _lineView.backgroundColor = [UIColor getColor:@"ececec"]; [_bgView addSubview:_lineView]; } - (void)layoutSubviews { [super layoutSubviews]; _msgDateLbl.frame = CGRectMake(0, 0, SCREEN_WIDTH, 30); _bgView.frame = CGRectMake(10, CGRectGetMaxY(_msgDateLbl.frame), SCREEN_WIDTH - 20, 100); CGSize titleSize = [_model.title sizeWithFont:FONT(15) andMaxSize:CGSizeMake(SCREEN_WIDTH - 40, MAXFLOAT)]; CGSize contentSize = [_model.content sizeWithFont:FONT(12) andMaxSize:CGSizeMake(SCREEN_WIDTH - 40, MAXFLOAT)]; if ([_model.colorType isEqualToString:@"1"] || [_model.colorType isEqualToString:@"2"]) { _topLineView.frame = CGRectMake(0, 0, SCREEN_WIDTH - 20, 5); _msgImgView.frame = CGRectZero; _titleLbl.frame = CGRectMake(10, CGRectGetMaxY(_topLineView.frame) + 10, SCREEN_WIDTH - 40, titleSize.height); } else if ([_model.colorType isEqualToString:@"3"]) { _topLineView.frame = CGRectZero; _msgImgView.frame = CGRectMake(0, 0, SCREEN_WIDTH - 20, 110); _titleLbl.frame = CGRectMake(10, CGRectGetMaxY(_msgImgView.frame) + 10, SCREEN_WIDTH - 40, titleSize.height); } _contentLbl.frame = CGRectMake(10, CGRectGetMaxY(_titleLbl.frame), SCREEN_WIDTH - 40, contentSize.height + 30); if ([_model.jump isEqualToString:@"0"]) { _lineView.frame = CGRectZero; _lookLbl.frame = CGRectZero; _bgView.frame = CGRectMake(10, CGRectGetMaxY(_msgDateLbl.frame), SCREEN_WIDTH - 20, CGRectGetMaxY(_contentLbl.frame)); } else if ([_model.jump isEqualToString:@"1"]) { _lineView.frame = CGRectMake(0, CGRectGetMaxY(_contentLbl.frame), SCREEN_WIDTH - 20, 0.5); _lookLbl.frame = CGRectMake(0, CGRectGetMaxY(_lineView.frame), SCREEN_WIDTH - 28, 30); _bgView.frame = CGRectMake(10, CGRectGetMaxY(_msgDateLbl.frame), SCREEN_WIDTH - 20, CGRectGetMaxY(_lookLbl.frame)); } }
3.在控制器中使用
.m
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { LBDNewMsgListModel *model = self.dataMutArr[indexPath.row]; return model.cellHeight; }