使用Masonry自适应行高，处理UISCrollView滚动问题

使用自适应行高，处理UISCrollView滚动问题

//
//  YFTestCell.m
//  EMCustomKeyBoardDemo
//
//  Created by fank on 2020/10/23.
//  Copyright © 2020 zhaochen. All rights reserved.
//

#import "YFTestCell.h"
#import "Masonry.h"

@implementation YFTestCell
{
    UILabel *_titleLab;
    UIScrollView *_containerScrollView;
    NSMutableArray *_labArr;
}

+(YFTestCell *)cellWithTableView:(UITableView *)tableView {
    static NSString *identifier = @"YFTestCell";
    YFTestCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
    if (!cell) {
        cell = [[YFTestCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
    }
    return cell;
}

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
    if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
        [self setUpView2];
    }
    return self;
}

- (void)setUpView{
    _titleLab = [[UILabel alloc] init];
    _titleLab.textColor = [UIColor blackColor];
    _titleLab.font = [UIFont systemFontOfSize:18];
    _titleLab.numberOfLines = 0;
    [self.contentView addSubview:_titleLab];
    [_titleLab mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.mas_equalTo(self.contentView.mas_left).offset(10);
        make.centerY.mas_equalTo(self.contentView.mas_centerY);
        make.top.mas_equalTo(self.contentView.mas_top).offset(20);
        make.bottom.mas_equalTo(self.contentView.mas_bottom).offset(-20);
        make.width.mas_equalTo([UIScreen mainScreen].bounds.size.width / 5);
    }];
    
    _containerScrollView = [[UIScrollView alloc] init];
    _containerScrollView.backgroundColor = [UIColor yellowColor];
    [self.contentView addSubview:_containerScrollView];
    [_containerScrollView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.mas_equalTo(_titleLab.mas_right);
        make.centerY.mas_equalTo(self.contentView.mas_centerY);
        make.top.mas_equalTo(self.contentView.mas_top);
        make.bottom.mas_equalTo(self.contentView.mas_bottom);
        make.right.mas_equalTo(self.contentView.mas_right);
    }];

    _labArr = [NSMutableArray array];
    NSInteger totalCount = 20;
    for (NSInteger i = 0; i < totalCount; i++) {
        UILabel *valueLab = [[UILabel alloc] init];
        valueLab.textColor = [UIColor blueColor];
        valueLab.font = [UIFont systemFontOfSize:14];
        valueLab.numberOfLines = 0;
        [_containerScrollView addSubview:valueLab];
        [_labArr addObject:valueLab];
        [valueLab mas_makeConstraints:^(MASConstraintMaker *make) {
                    make.left.mas_equalTo(_containerScrollView.mas_left).offset(i * ([UIScreen mainScreen].bounds.size.width / 5 + 10));
                    make.centerY.mas_equalTo(_containerScrollView.mas_centerY);
                    make.top.mas_equalTo(_containerScrollView.mas_top).offset(20);
                    make.bottom.mas_equalTo(_containerScrollView.mas_bottom).offset(-20);
                    make.width.mas_equalTo([UIScreen mainScreen].bounds.size.width / 5);
        }];
        if (i == totalCount - 1) {
//这种做法，_containerScrollView的宽度依赖于最后一个子控件的位置，相当于自己很大，所以能滚动，setUpView2方法是_containerScrollView上的子控件bgView很大，导致_containerScrollView可以滚动
              [_containerScrollView mas_updateConstraints:^(MASConstraintMaker *make) {
                    make.right.mas_equalTo(valueLab.mas_right).offset(10);
            }];
        }
    }
}

- (void)setUpView2{
    _titleLab = [[UILabel alloc] init];
    _titleLab.textColor = [UIColor blackColor];
    _titleLab.font = [UIFont systemFontOfSize:18];
    _titleLab.numberOfLines = 0;
    [self.contentView addSubview:_titleLab];
    [_titleLab mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.mas_equalTo(self.contentView.mas_left).offset(10);
        make.centerY.mas_equalTo(self.contentView.mas_centerY);
        make.top.mas_equalTo(self.contentView.mas_top).offset(20);
        make.bottom.mas_equalTo(self.contentView.mas_bottom).offset(-20);
        make.width.mas_equalTo([UIScreen mainScreen].bounds.size.width / 5);
    }];
    
    _containerScrollView = [[UIScrollView alloc] init];
    _containerScrollView.backgroundColor = [UIColor yellowColor];
    [self.contentView addSubview:_containerScrollView];
    [_containerScrollView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.mas_equalTo(_titleLab.mas_right);
        make.centerY.mas_equalTo(self.contentView.mas_centerY);
        make.top.mas_equalTo(self.contentView.mas_top);
        make.bottom.mas_equalTo(self.contentView.mas_bottom);
        make.right.mas_equalTo(self.contentView.mas_right);
    }];
    
    UIView *bgView = [[UIView alloc] init];
    bgView.backgroundColor = [UIColor redColor];
    [_containerScrollView addSubview:bgView];
    [bgView mas_makeConstraints:^(MASConstraintMaker *make) {
         make.edges.equalTo(_containerScrollView);
         make.height.equalTo(_containerScrollView);
        //此处不能限制make.width,不然bgView的宽度固定后_containerScrollView就无法滚动，
        //bgView宽度应该依赖于添加到bgView上的最后一个子控件，bgView的撑开也就是_containerScrollView的滚动范围
     }];

    _labArr = [NSMutableArray array];
    NSInteger totalCount = 20;
    for (NSInteger i = 0; i < totalCount; i++) {
        UILabel *valueLab = [[UILabel alloc] init];
        valueLab.textColor = [UIColor blueColor];
        valueLab.font = [UIFont systemFontOfSize:14];
        valueLab.numberOfLines = 0;
        [bgView addSubview:valueLab];
        [_labArr addObject:valueLab];
        [valueLab mas_makeConstraints:^(MASConstraintMaker *make) {
                make.left.mas_equalTo(bgView.mas_left).offset(i * ([UIScreen mainScreen].bounds.size.width / 5 + 10));
                make.centerY.mas_equalTo(bgView.mas_centerY);
                make.top.mas_equalTo(bgView.mas_top).offset(20);
                make.bottom.mas_equalTo(bgView.mas_bottom).offset(-20);
                make.width.mas_equalTo([UIScreen mainScreen].bounds.size.width / 5);
        }];
        if (i == totalCount - 1) {
            [bgView mas_updateConstraints:^(MASConstraintMaker *make) {
                make.right.mas_equalTo(valueLab.mas_right).offset(10);
            }];
        }
    }
}

- (void)setDic:(NSDictionary *)dic {
    _dic = dic;
    _titleLab.text = @"测试还是回到哈哈哈";
    [_labArr enumerateObjectsUsingBlock:^(UILabel * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
        if (idx == 1 || idx == 3) {
             obj.text = [NSString stringWithFormat:@"恩恩嫩嫩额嗯%ld",idx];
        }else {
             obj.text = [NSString stringWithFormat:@"哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈hahha哈哈哈哈哈多喝点哈哈哈多好多好哈哈都会好的换货单号%ld",idx];
        }
    }];
}

@end