//
// ViewController.m
// UI07_cell自适应高度
//
// Created by lanou3g on 17/8/11.
// Copyright © 2017年 lanou3g. All rights reserved.
//
#import "ViewController.h"
#import "Model.h"
#import "ModelCell.h"
@interface ViewController () <UITableViewDataSource,UITableViewDelegate>
@property (nonatomic, retain) NSArray *modelArray;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self getData];
UITableView *tableView = [[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewStylePlain];
tableView.delegate = self;
tableView.dataSource = self;
[self.view addSubview:tableView];
}
//获取数据
- (void)getData {
Model *model1 = [[Model alloc] init];
model1.imageName = @"1.png";
model1.imageDescription = @"我是小黄人哇哈哈哈哈哈哈哈哈哈";
Model *model2 = [[Model alloc] init];
model2.imageName = @"3.JPG";
model2.imageDescription = @"那个baby啦啦啦啦啦啦";
self.modelArray = @[model1,model2];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.modelArray.count;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
Model *model = self.modelArray[indexPath.row];
CGSize imageSize = [UIImage imageNamed:model.imageName].size;
CGFloat scale = tableView.bounds.size.width / imageSize.width;
CGFloat imageHeight = imageSize.height * scale;
CGRect rect = [model.imageDescription boundingRectWithSize:CGSizeMake(tableView.bounds.size.width, 1000.f) options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName : [UIFont systemFontOfSize:20.f]} context:nil];
return imageHeight + rect.size.height;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
Model *model = self.modelArray[indexPath.row];
static NSString *modelIdentifier = @"model";
ModelCell *cell = [tableView dequeueReusableCellWithIdentifier:modelIdentifier];
if (nil == cell) {
cell = [[ModelCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:modelIdentifier];
}
cell.model = model;
return cell;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
//
// Model.h
// UI07_cell自适应高度
//
// Created by lanou3g on 17/8/11.
// Copyright © 2017年 lanou3g. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface Model : NSObject
@property (nonatomic, retain) NSString *imageName;
@property (nonatomic, retain) NSString *imageDescription;
@end
//
// ModelCell.h
// UI07_cell自适应高度
//
// Created by lanou3g on 17/8/11.
// Copyright © 2017年 lanou3g. All rights reserved.
//
#import <UIKit/UIKit.h>
#import "Model.h"
@interface ModelCell : UITableViewCell
@property (nonatomic, retain) Model *model;
@end
//
// ModelCell.m
// UI07_cell自适应高度
//
// Created by lanou3g on 17/8/11.
// Copyright © 2017年 lanou3g. All rights reserved.
//
#import "ModelCell.h"
@interface ModelCell ()
@property (nonatomic, retain) UIImageView *modelImageView;
@property (nonatomic, retain) UILabel *modelImageDescriptionLabel;
@end
@implementation ModelCell
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
self.modelImageView = [[UIImageView alloc] initWithFrame:CGRectZero];
self.modelImageView.backgroundColor = [UIColor redColor];
self.modelImageDescriptionLabel = [[UILabel alloc] initWithFrame:CGRectZero];
self.modelImageDescriptionLabel.backgroundColor = [UIColor greenColor];
self.modelImageDescriptionLabel.font = [UIFont systemFontOfSize:20.f];
self.modelImageDescriptionLabel.numberOfLines = 0;
[self.contentView addSubview:self.modelImageView];
[self.contentView addSubview:self.modelImageDescriptionLabel];
}
return self;
}
- (void)setModel:(Model *)model {
if (_model != model) {
_model = model;
self.modelImageView.image = [UIImage imageNamed:model.imageName];
self.modelImageDescriptionLabel.text = model.imageDescription;
}
}
-(void)layoutSubviews {
[super layoutSubviews];
CGSize imageSize = self.modelImageView.image.size;
CGFloat scale = self.contentView.bounds.size.width / imageSize.width;
self.modelImageView.frame = CGRectMake(0, 0, self.contentView.bounds.size.width, imageSize.height * scale);
//计算字符串的高度
// 参数1:文本计算需要给定的尺寸
// 参数2:计算选项(以行和字体为标准进行计算)
// 参数3:字符串的属性
// 参数4:绘制上下文(填nil)
CGRect rect = [self.model.imageDescription boundingRectWithSize:CGSizeMake(self.contentView.frame.size.width, 1000.f) options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:@{NSAttachmentAttributeName : [UIFont systemFontOfSize:20.f]} context:nil];
self.modelImageDescriptionLabel.frame = CGRectMake(0, self.modelImageView.frame.size.height + 10, self.contentView.frame.size.width, rect.size.height);
}
- (void)awakeFromNib {
// Initialization code
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
[super setSelected:selected animated:animated];
// Configure the view for the selected state
}
@end
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