在github中有许多大牛封装好的第三发类库，其中有个自适应cell高度的类库

下载地址：https://github.com/gsdios/SDAutoLayout

model类

commentsModel #import "JSONModel.h" #import "getCommentData.h" @interface commentsModel : JSONModel @property(nonatomic,copy)NSArray<getCommentData> *commentList; @end #import "commentsModel.h" @implementation commentsModel @end getCommentData #import "JSONModel.h" @protocol getCommentData @end @interface getCommentData : JSONModel @property(nonatomic,copy)NSString *message; @property(nonatomic,copy)NSString *nickName; @property(nonatomic,copy)NSString *createTimeStr; @end #import "getCommentData.h" @implementation getCommentData @end

控制器

#import "commentsTableViewController.h" #import "commentsModel.h" #import "commentCell.h" @interface commentsTableViewController () @property(nonatomic,strong)NSArray *commentsArray; @end @implementation commentsTableViewController -(NSArray *)commentsArray{ if (_commentsArray==nil) { NSData *data=[NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"comment_list.json" ofType:nil]]; commentsModel *commensM=[[commentsModel alloc]initWithData:data error:nil]; _commentsArray=commensM.commentList; } return _commentsArray; } - (void)viewDidLoad { [super viewDidLoad]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } #pragma mark - Table view data source - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 1; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return self.commentsArray.count; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *ID=@"comment"; commentCell *cell=[tableView dequeueReusableCellWithIdentifier:ID]; if (cell==nil) { cell=[[commentCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:ID]; } cell.commentData=self.commentsArray[indexPath.row]; return cell; } -(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{ return [self cellHeightForIndexPath:indexPath cellContentViewWidth:[self cellContentViewWith]]; } -(CGFloat)cellContentViewWith{ CGFloat width=[UIScreen mainScreen].bounds.size.width; if ([UIApplication sharedApplication].statusBarOrientation != UIInterfaceOrientationPortrait && [[UIDevice currentDevice].systemVersion floatValue] < 8) { width = [UIScreen mainScreen].bounds.size.height; } return width; } @end

具体自定义cell的代码

#import <UIKit/UIKit.h> @class getCommentData; @interface commentCell : UITableViewCell @property(nonatomic,strong)getCommentData *commentData; @property(nonatomic,strong)UILabel *nameLabel; @property(nonatomic,strong)UILabel *titleLabel; @property(nonatomic,strong)UILabel *dateLabel; @end #import "commentCell.h" #import "commentsModel.h" @implementation commentCell -(void)setCommentData:(getCommentData *)commentData{ _commentData=commentData; _titleLabel.text=commentData.message; _dateLabel.text=commentData.createTimeStr; _nameLabel.text=commentData.nickName; } - (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier { self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]; if (self) { [self setup]; } return self; } -(void)setup{ _nameLabel=[UILabel new]; [self.contentView addSubview:_nameLabel]; _nameLabel.textColor=[UIColor colorWithRed:0.891 green:0.549 blue:0.073 alpha:1.000]; _nameLabel.font=[UIFont systemFontOfSize:15]; _nameLabel.numberOfLines=1; _titleLabel=[UILabel new]; [self.contentView addSubview:_titleLabel]; _titleLabel.textColor=[UIColor darkGrayColor]; _titleLabel.font=[UIFont systemFontOfSize:15]; _titleLabel.numberOfLines=0; _dateLabel=[UILabel new]; [self.contentView addSubview:_dateLabel]; _dateLabel.textColor=[UIColor colorWithRed:0.679 green:0.166 blue:0.828 alpha:1.000]; _dateLabel.font=[UIFont systemFontOfSize:15]; _dateLabel.numberOfLines=1; CGFloat margin=10; UIView *contentView=self.contentView; _nameLabel.sd_layout .leftSpaceToView(contentView,margin) .topSpaceToView(contentView,margin) .rightSpaceToView(contentView,margin) .heightIs(20); _titleLabel.sd_layout .leftSpaceToView(contentView,margin) .topSpaceToView(_nameLabel,2) .rightSpaceToView(contentView,margin) .autoHeightRatio(0); _dateLabel.sd_layout .leftSpaceToView(contentView,margin) .topSpaceToView(_titleLabel,5) .heightIs(20) .widthIs(150); [self setupAutoHeightWithBottomViewsArray:@[_titleLabel,_dateLabel,_nameLabel] bottomMargin:margin]; } - (void)awakeFromNib { } - (void)setSelected:(BOOL)selected animated:(BOOL)animated { [super setSelected:selected animated:animated]; } @end