1.創(chuàng)建Xib,畫出Cell布局

2.創(chuàng)建Xib對(duì)應(yīng)的Cell類

#import <UIKit/UIKit.h>
@interface YCTableViewCell : UITableViewCell
+ (instancetype)CellWithTitle:(NSString *)text tableView:(UITableView *)tableView;
- (CGFloat)cellHeight;
@end 

#import "YCTableViewCell.h"

@interface YCTableViewCell ()
@property (weak, nonatomic) IBOutlet UILabel *label;
@property (weak, nonatomic) IBOutlet UIView *bottomView;
@end

@implementation YCTableViewCell

+ (instancetype)CellWithTitle:(NSString *)text tableView:(UITableView *)tableView{
    YCTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
    if (cell == nil) {
        cell = [[[NSBundle mainBundle] loadNibNamed:@"YCTableViewCell" owner:self options:nil] firstObject];
        cell.label.text = text;
    }
    return cell;
}

3.控制器

#import "YCViewController1.h"
#import "YCTableViewCell.h"

@interface YCViewController1 ()<UITableViewDelegate,UITableViewDataSource>

@property (nonatomic, strong) UITableView *tableView;
/**
 *  文字?jǐn)?shù)組(cell數(shù)量)
 */
@property (nonatomic, strong) NSArray *titleArr;
/**
 *  緩存cell高度
 */
@property (nonatomic, strong) NSArray *rowHeightArr;
@end

@implementation YCViewController1
/**
 *  通過(guò)手動(dòng)計(jì)算Cell中每個(gè)控件的高度 得出Cell總高度
 */
- (void)viewDidLoad {
    [super viewDidLoad];
    self.tableView = [[UITableView alloc] init];
    self.tableView.frame = CGRectMake(0, 20, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height);
    self.tableView.delegate = self;
    self.tableView.dataSource = self;
    self.tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
    [self.view addSubview:self.tableView];
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return self.titleArr.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    NSString *title = self.titleArr[indexPath.row];
    YCTableViewCell *cell = [YCTableViewCell CellWithTitle:title tableView:tableView];

    cell.selectionStyle = UITableViewCellSelectionStyleNone;
    return cell;
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    return [self.rowHeightArr[indexPath.row] integerValue];
}

/**
 *  調(diào)用這個(gè)方法之后,會(huì)先執(zhí)行cellForRowAtIndexPath而不是heightForRowAtIndexPath
 */
- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath{
    return 100;
}

- (UITableView *)tableView{
    if (!_tableView) {
        _tableView = [[UITableView alloc] init];
    }
    return _tableView;
}

- (NSArray *)titleArr{
    if (!_titleArr) {
        _titleArr = @[@"二二二二二二二二二二二",@"二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二",@"二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二"];
    }
    return _titleArr;
}

/**
 *  計(jì)算Cell高度,并緩存
 *
 *  @return 返回緩高度數(shù)組
 */
- (NSArray *)rowHeightArr{
    NSMutableArray *tmpArr = [@[] mutableCopy];
    for (NSString *title in self.titleArr) {
        CGFloat marginH = 8;
        CGFloat bottomViewH = 30;
        CGSize size = CGSizeMake([UIScreen mainScreen].bounds.size.width, CGFLOAT_MAX);
        NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc] init];
        style.lineSpacing = 3.0;
        // 計(jì)算label文字的實(shí)際高度
        CGFloat labelH = [title boundingRectWithSize:size options:NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName : [UIFont systemFontOfSize:17] , NSParagraphStyleAttributeName : style} context:nil].size.height;
        CGFloat height = labelH + marginH + bottomViewH + marginH;
        [tmpArr addObject:@(height)];
    }
    return tmpArr.copy;
}
@end