自定义非等高cell02-xib

来源：互联网发布：江苏省建筑节能数据库编辑：程序博客网时间：2024/06/06 07:09

在model中加入一个属性，cell的高度。

LMTestModel.h

#import <UIKit/UIKit.h>#import "LMTestModel.h"@interface LMTestCell : UITableViewCell@property (weak, nonatomic) IBOutlet UILabel *nameLabel;@property (weak, nonatomic) IBOutlet UILabel *contentLabel;@property (weak, nonatomic) IBOutlet UIImageView *pictureView;+(LMTestCell *)cellWithTableView:(UITableView *)tableView;-(void)setContent:(NSUInteger)index cellModel:(LMTestModel *)model;@end

LMTestCell.h

#import <UIKit/UIKit.h>#import "LMTestModel.h"@interface LMTestCell : UITableViewCell@property (weak, nonatomic) IBOutlet UILabel *nameLabel;@property (weak, nonatomic) IBOutlet UILabel *contentLabel;@property (weak, nonatomic) IBOutlet UIImageView *pictureView;+(LMTestCell *)cellWithTableView:(UITableView *)tableView;-(void)setContent:(NSUInteger)index cellModel:(LMTestModel *)model;@end

LMTestCell.m

#import "LMTestCell.h"#import "LMTestModel.h"@implementation LMTestCell+(LMTestCell *)cellWithTableView:(UITableView *)tableView{    static NSString *cellid = @"LMTestCellID";    LMTestCell *cell = [tableView dequeueReusableCellWithIdentifier:cellid];    if (!cell) {        cell = [[NSBundle mainBundle]loadNibNamed:@"LMTestCell" owner:self options:nil][0];    }    return cell;    }-(void)awakeFromNib{    [super awakeFromNib];    //设置label每一行文字的最大宽度    self.contentLabel.preferredMaxLayoutWidth = [UIScreen mainScreen].bounds.size.width-10*2;}-(void)setContent:(NSUInteger)index cellModel:(LMTestModel *)model{    [self.nameLabel setText:model.name];    [self.contentLabel setText:model.content];    if (model.url) {        self.pictureView.hidden = NO;        [self.pictureView setImage:[UIImage imageNamed:@"1"]];        NSURL *url = [NSURL URLWithString:model.url];        dispatch_async(dispatch_queue_create(0, DISPATCH_QUEUE_CONCURRENT), ^{            NSData *data = [NSData dataWithContentsOfURL:url];            dispatch_async(dispatch_get_main_queue(), ^{                [self.pictureView setImage:[UIImage imageWithData:data]];            });        });    }else    {        self.pictureView.hidden = YES;    }    [self layoutIfNeeded];        if (self.pictureView.hidden) {         model.cellHeight = CGRectGetMaxY(self.contentLabel.frame)+10;    }else    {        model.cellHeight = CGRectGetMaxY(self.pictureView.frame)+10;    }}- (void)setSelected:(BOOL)selected animated:(BOOL)animated {    [super setSelected:selected animated:animated];    // Configure the view for the selected state}@end

ViewController.m

#import "ViewController.h"#import "LMTestCell.h"@interface ViewController ()<UITableViewDelegate,UITableViewDataSource>{    UITableView *_weiboTableView;    }/* 存放所有的model */@property(nonatomic,strong)NSArray *models;@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    UITableView *tableView = [[UITableView alloc]initWithFrame:self.view.bounds style:UITableViewStylePlain];        _weiboTableView = tableView;    _weiboTableView.delegate = self;    _weiboTableView.dataSource = self;    [self.view addSubview:_weiboTableView];    }-(NSArray *)models{    if(!_models)    {        LMTestModel *model1 = [[LMTestModel alloc]init];        model1.name = @"丫丫乐";        model1.content = @"oh my baby baby ,oh....";        model1.url = @"https://ss0.bdstatic.com/94oJfD_bAAcT8t7mm9GUKT-xh_/timg?image&quality=100&size=b4000_4000&sec=1462862903&di=4aedac5cd95d7605bc76d539064ddb14&src=http://img2.3lian.com/2014/f4/197/d/97.jpg";        LMTestModel *model2 = [[LMTestModel alloc]init];        model2.name = @"丫丫乐";        model2.content = @"新浪网新闻中心是新浪网最重要的频道之一,24小时滚动报道国内、国际及社会新闻。每日编发新闻数以万计。ews.sina.com.cn/  - 百度快照 - 77%好评";                        _models = @[model1,model2];    }    return _models;}- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    return self.models.count;}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    LMTestCell *cell = [LMTestCell cellWithTableView:tableView];    LMTestModel *model = self.models[indexPath.row];        [cell setContent:indexPath.row cellModel:model];        return cell;}#pragma mark - 02-自定义非等高cell-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{    //cellForRowAtIndexPath:获取已经在tableivew中显示的cell。    LMTestModel *model = self.models[indexPath.row];    return model.cellHeight;}/** 返回每一行的估计高度 只返回了估计高度，那么就会先调用tableView:cellForRowIndexPath:方法创建cell，在调用tableView heightForRowAtIndexPath:方法获取cell的真实高度。 */-(CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath{    return 250;}@end

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