iOS：针对固定数据源，更好的封装cell

一、介绍

在iOS开发中，tableView非常常用，能将其展示出来，它的数据源必不可少。当然数据源有动态下发的，有固定写死的，这里我只探讨固定写死的情况。对于死数据，我们在项目中经常遇到的场景就是我的模块，以及设置模块等。那么，这些死数据我们如何组装的呢？  在以前开发中，我直接用一个可变数组装着每一个cell对应的字典（字典中包含每一个cell需要字段的键值对），虽然也可以实现效果，但是扩展不方便，本人不推荐。 在开发中，我的搭档推荐我项目中的封装的cell模型，我一看，确实不错，在这里给大家分享一下。

二、思想

1、定义继承NSObject的CustomCellConfig类，定义cell可能需要的全部属性

2、定义一个实例化的方法，参数为字典

3、在实例化方法中接着通过OC的setValuesForKeysWithDictionary方法将对应的所有赋值的属性初始化

4、当然再重写一下该类的init方法，默认赋值cell的高为44.0f像素

5、在控制器中创建CustomCellConfig的实体对象并存入数据源，最后刷新tableView

6、获取CustomCellConfig实体对象对cell进行赋值并触发block即可

三、代码

//
//  CustomCellConfig.h
//  CustomCellConfig
//
//  Created by 夏远全 on 2017/12/8.
//  Copyright © 2017年 夏远全. All rights reserved.
//
 
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
 
@class CustomCellConfig;
 
typedef void (^CustomCellSelectedBlock)(CustomCellConfig *config);
 
@interface CustomCellConfig : NSObject
 
@property (nonatomic, strong) NSString *title;
@property (nonatomic, strong) NSString *detail;
@property (nonatomic, strong) UIImage  *image;
@property (nonatomic, strong) NSString *avatar;
 
@property (nonatomic, assign) int       badge;
@property (nonatomic, assign) int       contentType;
@property (nonatomic, assign) float     height;
@property (nonatomic, assign) BOOL      canEdit;
 
@property (nonatomic, assign) UITableViewCellAccessoryType    accessoryType;
@property (nonatomic,   copy) CustomCellSelectedBlock block;
@property (nonatomic, strong) NSString *viewController;
@property (nonatomic, strong) NSString *segue;
@property (nonatomic, strong) NSIndexPath *indexPath;
@property (nonatomic,   copy) NSAttributedString *attributedDetail;
 
@property (nonatomic, strong) NSString *identify;
@property (nonatomic, strong) id        object;
 
+ (CustomCellConfig *)configWithDictionary:(NSDictionary *)dict;
 
@end

//
//  CustomCellConfig.m
//  CustomCellConfig
//
//  Created by 夏远全 on 2017/12/8.
//  Copyright © 2017年 夏远全. All rights reserved.
//
 
#import "CustomCellConfig.h"
 
@implementation CustomCellConfig
 
- (id)init {
    if (self = [super init]) {
        self.height = 44.0f;
    }
    return self;
}
 
+ (CustomCellConfig *)configWithDictionary:(NSDictionary *)dict {
    CustomCellConfig *config = [[CustomCellConfig alloc] init];
    [config setValuesForKeysWithDictionary:dict];
    return config;
}
 
@end

四、使用

//
//  ViewController.m
//  CustomCellConfig
//
//  Created by 夏远全 on 2017/12/8.
//  Copyright © 2017年 夏远全. All rights reserved.
//
 
#import "ViewController.h"
#import "CustomCellConfig.h"
 
@interface ViewController ()<UITableViewDataSource,UITableViewDelegate>
@property (strong,nonatomic)UITableView     *tableView;
@property (strong,nonatomic)NSMutableArray  *dataSource;
@end
 
@implementation ViewController
 
#pragma mark - life cycle
 
- (void)viewDidLoad {
    [super viewDidLoad];
 
    [self setupNavigation];
    [self setupDefaultValue];
    [self setupSubviews];
 
    [self loadData];
}
 
-(void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
}
 
-(void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];
}
 
-(void)setupNavigation
{
    self.title = @"测试cellConfig";
}
 
-(void)setupDefaultValue
{
    self.tableView.backgroundColor = [UIColor whiteColor];
    self.tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
}
 
-(void)setupSubviews
{
    [self addSubViews];
    [self setupSubviewsConstraints];
}
 
#pragma mark - add subviews
 
-(void)addSubViews
{
    [self.view addSubview:self.tableView];
}
 
#pragma mark - layout subviews
 
-(void)setupSubviewsConstraints
{
 
}
 
#pragma mark - load data
-(void)loadData
{
 
    __weak typeof(self) weakSelf = self;
 
    //第一组cell
    CustomCellConfig *cellConfig1 = [CustomCellConfig configWithDictionary:@{@"image":[UIImage imageNamed:@"avatar"],@"title":@"消息",@"accessoryType":@(UITableViewCellAccessoryDisclosureIndicator),@"block":^(CustomCellConfig *config){
 
        [weakSelf pushViewController:config];
 
    }}];
 
    CustomCellConfig *cellConfig2 = [CustomCellConfig configWithDictionary:@{@"image":[UIImage imageNamed:@"avatar"],@"title":@"成绩",@"detail":@"分析",@"accessoryType":@(UITableViewCellAccessoryDisclosureIndicator),@"block":^(CustomCellConfig *config){
 
        [weakSelf pushViewController:config];
 
    }}];
    CustomCellConfig *cellConfig3 = [CustomCellConfig configWithDictionary:@{@"image":[UIImage imageNamed:@"avatar"],@"title":@"管理",@"attributedDetail":@"",@"accessoryType":@(UITableViewCellAccessoryDisclosureIndicator),@"block":^(CustomCellConfig *config){
 
        [weakSelf pushViewController:config];
 
    }}];
    NSArray<CustomCellConfig *> *section1 = @[cellConfig1,cellConfig2,cellConfig3];
 
    //第二组cell
    CustomCellConfig *cellConfig4 = [CustomCellConfig configWithDictionary:@{@"image":[UIImage imageNamed:@"avatar"],@"title":@"消息",@"height":@(),@"accessoryType":@(UITableViewCellAccessoryNone),@"block":^(CustomCellConfig *config){
 
        [weakSelf pushViewController:config];
 
    }}];
    CustomCellConfig *cellConfig5 = [CustomCellConfig configWithDictionary:@{@"image":[UIImage imageNamed:@"avatar"],@"title":@"成绩",@"height":@(),@"detail":@"分析",@"accessoryType":@(UITableViewCellAccessoryDetailDisclosureButton),@"block":^(CustomCellConfig *config){
 
        [weakSelf pushViewController:config];
 
    }}];
    CustomCellConfig *cellConfig6 = [CustomCellConfig configWithDictionary:@{@"image":[UIImage imageNamed:@"avatar"],@"title":@"管理",@"height":@(),@"accessoryType":@(UITableViewCellAccessoryCheckmark),@"block":^(CustomCellConfig *config){
 
        [weakSelf pushViewController:config];
 
    }}];
    CustomCellConfig *cellConfig7 = [CustomCellConfig configWithDictionary:@{@"image":[UIImage imageNamed:@"avatar"],@"title":@"更多",@"height":@(),@"accessoryType":@(UITableViewCellAccessoryDetailButton),@"block":^(CustomCellConfig *config){
 
        [weakSelf pushViewController:config];
 
    }}];
    NSArray<CustomCellConfig *> *section2 = @[cellConfig4,cellConfig5,cellConfig6,cellConfig7];
 
    //......等等......该模型的字段均可用，自己根据需要进行赋值...........//
 
    [self.dataSource addObject:section1];
    [self.dataSource addObject:section2];
    [self.tableView reloadData];
}
 
#pragma mark - delegate - datasource methods
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return self.dataSource.count;
}
 
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [self.dataSource[section] count];
}
 
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
 
    static NSString *reuserIdentifier = @"reuserIdentifier";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:reuserIdentifier];
    if (!cell) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:reuserIdentifier];
    }
    CustomCellConfig *cellConfig = self.dataSource[indexPath.section][indexPath.row];
    cell.imageView.image = cellConfig.image;
    cell.textLabel.text = cellConfig.title;
    cell.detailTextLabel.text = cellConfig.detail;
    cell.accessoryType = cellConfig.accessoryType;
    return cell;
}
 
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    CustomCellConfig *cellConfig = self.dataSource[indexPath.section][indexPath.row];
    return cellConfig.height;
}
 
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
 
    [tableView deselectRowAtIndexPath:indexPath animated:YES];
 
    CustomCellConfig *cellConfig = self.dataSource[indexPath.section][indexPath.row];
    if (cellConfig.block) {
        cellConfig.block(cellConfig);
    }
}
 
#pragma mark - event rsponse
-(void)pushViewController:(CustomCellConfig *)cellConfig{
 
    UIViewController *vc = [[UIViewController alloc] init];
    vc.view.backgroundColor = [UIColor redColor];
    [self.navigationController pushViewController:vc animated:YES];
}
 
#pragma mark - public methods
 
#pragma mark - private methods
 
#pragma mark - getters and setters
-(UITableView *)tableView
{
    if (!_tableView) {
        _tableView = [[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewStyleGrouped];
        _tableView.dataSource = self;
        _tableView.delegate = self;
    }
    return _tableView;
}
-(NSMutableArray *)dataSource{
    if (!_dataSource) {
        _dataSource = [NSMutableArray array];
    }
    return _dataSource;
}
 
@end

五、效果