【缺点就是利用自动布局计算行高很消耗cpu,每次滚动到该cell都要计算】
依赖框架:Masonry
一、控制器
#import "OCViewController.h"
#import "OCTableViewCell.h"
@interface OCViewController ()<UITableViewDelegate,UITableViewDataSource>
@property (nonatomic,strong) UITableView * tableView;
//总数据
@property (nonatomic,strong) NSMutableArray *dataSouse;
@end
@implementation OCViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
self.title = @"OC自适应高度";
//数据
NSArray * array = @[@"我就两个字",@"中新网4月17日电 据韩联社报道,韩国海洋水产部(简称“海水部”)“世越号”现场处理本部和负责世越号船体清理工作的韩国打捞局(Korea Salvage)为方便搜寻失踪者遗体的工作人员开展工作已于17日完成护栏安装,预计失踪者遗体搜寻工作有望于18日正式启动",@"这是第三个",@"3月28日,在将“世越”号船体运往木浦新港前,工作人员也同样在半潜船甲板上发现过动物尸骨。本月2日,工作人员曾在半潜船甲板上发现9块动物尸骨、“世越”号船长李某的护照及手提包、信用卡、圆珠笔等物品,但截至目前仍未发现9名失踪者的遗体。",@"",@"2014年4月16日,“世越”号在全罗南道珍岛郡附近水域沉没,共致295人遇难,迄今仍有9人下落不明,遇难者大多是学生。"];
[self.dataSouse addObjectsFromArray:array];
[self tableView];
}
//tableView懒加载
- (UITableView *)tableView {
if (!_tableView) {
_tableView=[[UITableView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) style:UITableViewStyleGrouped];
_tableView.delegate=self;
_tableView.dataSource=self;
_tableView.showsVerticalScrollIndicator=NO;
_tableView.backgroundColor = [UIColor groupTableViewBackgroundColor];
[self.view addSubview:_tableView];
//开启自动计算高度
//【重点】注意千万不要实现行高的代理方法,否则无效:heightForRowAt
_tableView.rowHeight = UITableViewAutomaticDimension;
_tableView.estimatedRowHeight = 44;
}
return _tableView;
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.dataSouse.count;
}
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
return 0.01;
}
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section{
return 0.01;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *identifierhot = @"cell";
OCTableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:identifierhot];
if (!cell){
cell = [[OCTableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifierhot];
/* 忽略点击效果 */
[cell setSelectionStyle:UITableViewCellSelectionStyleNone];
}
cell.stringTitle = self.dataSouse[indexPath.row];
return cell;
}
- (NSMutableArray *)dataSouse{
if (_dataSouse == nil) {
_dataSouse = [NSMutableArray array];
}
return _dataSouse;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
二、cell层
#import <UIKit/UIKit.h>
@interface OCTableViewCell : UITableViewCell
@property(nonatomic,strong)NSString * stringTitle;
@end
#import "OCTableViewCell.h"
//自动布局
#import "Masonry.h"
@interface OCTableViewCell()
@property (weak, nonatomic) UILabel *labeltitle;//标题
@property (weak, nonatomic) UIImageView *pictureView;//大图
@property (weak, nonatomic)UILabel *labelContont;//内容
@end
@implementation OCTableViewCell
- (void)awakeFromNib {
[super awakeFromNib];
// Initialization code
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
[super setSelected:selected animated:animated];
// Configure the view for the selected state
}
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
[self setupUI];
}
return self;
}
//赋值
-(void)setStringTitle:(NSString *)stringTitle{
_stringTitle = stringTitle;
_labeltitle.text = stringTitle;
_labelContont.text = stringTitle;
}
- (void)setupUI{
//标题 【重点】必须在创建第一块控件的时候约束:contentView
UILabel * labeltitle = [[UILabel alloc]init];
labeltitle.backgroundColor = [UIColor whiteColor];
self.labeltitle = labeltitle;
labeltitle.text = @"标题";
labeltitle.textAlignment = NSTextAlignmentLeft;
labeltitle.numberOfLines = 0;
[self.contentView addSubview:labeltitle];
//大图
UIImageView *pictureView = [[UIImageView alloc]init];
self.pictureView = pictureView;
pictureView.image = [UIImage imageNamed:@"IMG_0434.JPG"];
pictureView.contentMode = UIViewContentModeScaleAspectFill;
pictureView.clipsToBounds = YES;
[self.contentView addSubview:pictureView];
//内容
UILabel * labelContont = [[UILabel alloc]init];
labelContont.backgroundColor = [UIColor whiteColor];
self.labelContont = labelContont;
labelContont.text = @"内容";
labelContont.textAlignment = NSTextAlignmentLeft;
labelContont.numberOfLines = 0;
labelContont.userInteractionEnabled = YES;
UITapGestureRecognizer * tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(Actionbutton)];
[labelContont addGestureRecognizer:tap];
[self.contentView addSubview:labelContont];
//标题约束
[labeltitle mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(self.contentView.mas_top).with.offset(15);
make.left.equalTo(self.contentView).with.offset(10);
make.right.equalTo(self.contentView).with.offset(-10);
}];
//图片约束
[pictureView mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(labeltitle.mas_bottom).with.offset(20);
make.left.mas_equalTo(10);
make.right.mas_equalTo(-10);
make.height.mas_equalTo(200);
}];
//设置内容约束 //内容 【重点】必须在创建最后一块控件的时候约束:contentView
[labelContont mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(pictureView.mas_bottom).with.offset(20);
make.left.mas_equalTo(10);
make.right.mas_equalTo(-10);
make.bottom.equalTo(self.contentView).with.offset(-10);
}];
}
-(void)Actionbutton{
NSLog(@"点击了内容");
}
@end
github demo下载连接(包含OC版和Swift版):https://github.com/micheng23/tableView-cellHighly
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