把之前做的demo放在这里,以后方便看
cell代码 .h
#import <UIKit/UIKit.h>
#import "DDModel.h"
@interface DDCell : UITableViewCell
@property (nonatomic,strong)DDModel *model;
+ (instancetype)cellWithTableView:(UITableView *)tableView;
@end
cell代码 .m
#import "DDCell.h"
@interface DDCell()
@property (nonatomic,strong)UILabel *first;
@property (nonatomic,strong)UILabel *second;
@property (nonatomic,strong)UILabel *third;
@end
@implementation DDCell
+ (instancetype)cellWithTableView:(UITableView *)tableView{
static NSString *identifier = @"DDCell";
// 1.缓存中取
DDCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
// 2.创建
if (cell == nil) {
cell = [[DDCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
}
return cell;
}
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
if ([super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
[self setupSubviews];
}
return self;
}
- (void)setupSubviews{
//创建第一个label
self.first = [[UILabel alloc] init];
self.second = [[UILabel alloc] init];
self.third = [[UILabel alloc] init];
self.first.numberOfLines = 0;
self.second.numberOfLines = 0;
self.third.numberOfLines = 0;
// self.first.backgroundColor = [UIColor redColor];
// self.second.backgroundColor = [UIColor blueColor];
// self.third.backgroundColor = [UIColor greenColor];
[self addSubview:self.first];
[self addSubview:self.second];
[self addSubview:self.third];
}
- (void)setModel:(DDModel *)model{
CGFloat margin = 8;
CGFloat left = 12;
CGFloat width = [UIScreen mainScreen].bounds.size.width - 2 * left;
_model = model;
//计算所用高度,设置frame
// 1111111111
self.first.text = model.firstContent;
NSMutableAttributedString *attrStr = [[NSMutableAttributedString alloc] initWithString:model.firstContent];
UIFont *font = [UIFont systemFontOfSize:18];
UIColor *color = [UIColor redColor];
NSRange allRange = [model.firstContent rangeOfString:model.firstContent];
[attrStr addAttributes:@{NSFontAttributeName:font,NSForegroundColorAttributeName:color} range:allRange];
CGFloat fx = left;
CGFloat fy = 0;
CGFloat fw = width;
CGSize size = [attrStr boundingRectWithSize:CGSizeMake(fw, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin context:nil].size;
self.first.frame = CGRectMake(fx, fy, fw, size.height);
// 22222
self.second.text = model.secondContent;
NSMutableAttributedString *attrStr2 = [[NSMutableAttributedString alloc] initWithString:model.secondContent];
NSRange allRange2 = [model.secondContent rangeOfString:model.secondContent];
[attrStr2 addAttributes:@{NSFontAttributeName:font,NSForegroundColorAttributeName:color} range:allRange2];
CGFloat sx = left;
CGFloat sy = fy + size.height + margin;
CGSize size2 = [attrStr2 boundingRectWithSize:CGSizeMake(fw, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin context:nil].size;
self.second.frame = CGRectMake(sx, sy, fw, size2.height);
// 33333333
self.third.text = model.thirdContent;
NSMutableAttributedString *attrStr3 = [[NSMutableAttributedString alloc] initWithString:model.thirdContent];
NSRange allRange3 = [model.secondContent rangeOfString:model.thirdContent];
[attrStr3 addAttributes:@{NSFontAttributeName:font,NSForegroundColorAttributeName:color} range:allRange3];
CGFloat tx = left;
CGFloat ty = sy + size2.height + margin;
CGSize size3 = [attrStr3 boundingRectWithSize:CGSizeMake(fw, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin context:nil].size;
self.third.frame = CGRectMake(tx, ty, fw, size3.height);
model.cellHeight = size3.height + ty + margin;
}
模型 .h
#import <UIKit/UIKit.h>
@interface DDModel : NSObject
@property (nonatomic,strong)NSString *firstContent;
@property (nonatomic,strong)NSString *secondContent;
@property (nonatomic,strong)NSString *thirdContent;
//记录cell高度
@property (nonatomic,assign)CGFloat cellHeight;
@end
Controller 中用法
#import "ViewController.h"
#import "DDModel.h"
#import "DDCell.h"
@interface ViewController ()<UITableViewDelegate,UITableViewDataSource>
@property (nonatomic,strong)UITableView *tableView;
@property (nonatomic,strong)NSMutableArray *dataArray;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.dataArray = [NSMutableArray arrayWithCapacity:100];
for (int i = 0; i < 100; i++) {
DDModel *model = [[DDModel alloc] init];
model.firstContent = @"11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111";
model.secondContent = @"2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222";
model.thirdContent = @"3333333333333333333";
[self.dataArray addObject:model];
}
self.tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) style:UITableViewStylePlain];
self.tableView.delegate = self;
self.tableView.dataSource = self;
self.tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
[self.view addSubview:self.tableView];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
DDCell *cell = [DDCell cellWithTableView:tableView];
cell.model = self.dataArray[indexPath.row];
return cell;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return self.dataArray.count;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
DDModel *model = self.dataArray[indexPath.row];
return model.cellHeight;
}
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