阅读原文
一、基类构建
Protocols模块
- Protocols.h
#import "CellProtocol.h"
#import "ViewProtocol.h"
#import "ViewModelProtocol.h"
#import "ControllerProtocol.h"
- CellProtocol.h
@protocol CellProtocol
@optional
/*
* 初始化UI控件
*/
- (void)setupViews;
@end
- ViewProtocol.h
@protocol ViewModelProtocol;
@protocol ViewProtocol
@optional
- (instancetype)initWithViewModel:(id)viewModel;
/**
* 初始化UI控件
*/
- (void)setupViews;
/**
* 初始化RAC
*/
- (void)racViewModel;
@end
- ControllerProtocol.h
@protocol ViewModelProtocol;
@protocol ControllerProtocol
@optional
- (instancetype)initWithViewModel:(id )viewModel;
/*
* 初始化UI控件
*/
- (void)addSubviews;
/*
* 初始化RAC
*/
- (void)racViewModel;
/*
* 初始化导航栏
*/
- (void)layoutNavigation;
@end
- ViewModelProtocol.h
@protocol ViewModelProtocol
@optional
- (instancetype)initWithModel:(id)model;
/**
* 初始化
*/
- (void)initialize;
@end
Controller模块
- YSBaseViewController.h
#import
#import "ControllerProtocol.h"
NS_ASSUME_NONNULL_BEGIN
@interface YSBaseViewController : UIViewController
@end
NS_ASSUME_NONNULL_END
- YSBaseViewController.m
#import "YSBaseViewController.h"
@interface YSBaseViewController ()
@end
@implementation YSBaseViewController
+ (instancetype)allocWithZone:(struct _NSZone *)zone{
YSBaseViewController *viewController = [super allocWithZone:zone];
@weakify(viewController)
[[viewController rac_signalForSelector:@selector(viewDidLoad)] subscribeNext:^(id x) {
@strongify(viewController)
[viewController layoutNavigation];
[viewController addSubviews];
[viewController racViewModel];
}];
return viewController;
}
- (instancetype)initWithViewModel:(id )viewModel{
if (self = [super init]) {
}
return self;
}
- (void)addSubviews{
self.view.backgroundColor = UIColorViewBG;
}
- (void)racViewModel{}
- (void)layoutNavigation{
[self setLeftBarButtonWithTitle:nil];
}
- (void)viewDidLoad {
[super viewDidLoad];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
NSLog(@"当前控制器 --- %@ --- ",NSStringFromClass([self class]));
});
}
- (void)dealloc{
NSLog(@"VC -- %@ -- 正常销毁",NSStringFromClass([self class]));
}
@end
View模块
- YSBaseView.h
#import
#import "ViewProtocol.h"
NS_ASSUME_NONNULL_BEGIN
@interface YSBaseView : UIView
@end
NS_ASSUME_NONNULL_END
- YSBaseView.m
#import "YSBaseView.h"
@implementation YSBaseView
- (instancetype)init{
if (self = [super init]) {
[self racViewModel];
[self setupViews];
}
return self;
}
- (instancetype)initWithViewModel:(id)viewModel{
if (self = [super init]) {
[self racViewModel];
[self setupViews];
}
return self;
}
- (void)bindViewModel{}
- (void)setupViews{}
- (void)dealloc{
NSLog(@"YSBaseView -- %@ -- 正常销毁",NSStringFromClass([self class]));
}
@end
- YSBaseTableViewCell.h
#import
#import "CellProtocol.h"
NS_ASSUME_NONNULL_BEGIN
@interface YSBaseTableViewCell : UITableViewCell
@end
NS_ASSUME_NONNULL_END
- YSBaseTableViewCell.m
#import "YSBaseTableViewCell.h"
@implementation YSBaseTableViewCell
- (void)awakeFromNib {
[super awakeFromNib];
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
[super setSelected:selected animated:animated];
}
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
[self setupViews];
}
return self;
}
- (void)setupViews{}
- (void)dealloc{
NSLog(@"YSBaseTableViewCell -- %@ -- 正常销毁",NSStringFromClass([self class]));
}
@end
- YSBaseCollectionViewCell.h
#import
#import "CellProtocol.h"
NS_ASSUME_NONNULL_BEGIN
@interface YSBaseCollectionViewCell : UICollectionViewCell
@end
NS_ASSUME_NONNULL_END
- YSBaseCollectionViewCell.m
#import "YSBaseCollectionViewCell.h"
@implementation YSBaseCollectionViewCell
- (instancetype)initWithFrame:(CGRect)frame{
if (self = [super initWithFrame:frame]){
[self setupViews];
}
return self;
}
- (void)setupViews{}
- (void)dealloc{
NSLog(@"YSBaseCollectionViewCell -- %@ -- 正常销毁",NSStringFromClass([self class]));
}
@end
ViewModel模块
- YSBaseViewModel.h
#import
#import "ViewModelProtocol.h"
NS_ASSUME_NONNULL_BEGIN
@interface YSBaseViewModel : NSObject
@end
NS_ASSUME_NONNULL_END
- YSBaseViewModel.m
#import "YSBaseViewModel.h"
@implementation YSBaseViewModel
+ (instancetype)allocWithZone:(struct _NSZone *)zone {
YSBaseViewModel *viewModel = [super allocWithZone:zone];
if (viewModel) {
[viewModel initialize];
}
return viewModel;
}
- (instancetype)initWithModel:(id)model {
if (self = [super init]) {
}
return self;
}
- (void)initialize{
}
@end
Model模块
- YSBaseModel.h
#import
NS_ASSUME_NONNULL_BEGIN
@interface YSBaseModel : NSObject
@end
NS_ASSUME_NONNULL_END
- YSBaseModel.m
#import "YSBaseModel.h"
#include
@implementation YSBaseModel
- (NSString *)debugDescription{
return [self description];
}
- (NSString *)description{
if ([self isKindOfClass:[NSArray class]] || [self isKindOfClass:[NSDictionary class]] || [self isKindOfClass:[NSNumber class]] || [self isKindOfClass:[NSString class]])
{
return self.debugDescription;
}
NSMutableDictionary *dictionary = [NSMutableDictionary dictionary];
uint count;
objc_property_t *properties = class_copyPropertyList([self class], &count);
for (int i = 0; i < count; I++)
{
objc_property_t property = properties[I];
NSString *name = @(property_getName(property));
id value = [self valueForKey:name]?:@"nil";
[dictionary setObject:value forKey:name];
}
free(properties);
return [NSString stringWithFormat:@"<%@: %p> -- %@", [self class], self, dictionary];
}
- (void)dealloc{
NSLog(@"YSBaseModel -- %@ -- 正常销毁",NSStringFromClass([self class]));
}
@end
二、实践示例
模块结构
- HomeModel.h
#import "YSBaseModel.h"
NS_ASSUME_NONNULL_BEGIN
@interface HomeModel : YSBaseModel
@property (nonatomic,copy) NSString *title;
@end
NS_ASSUME_NONNULL_END
- HomeModel.m
#import "HomeModel.h"
@implementation HomeModel
@end
- HomeView.h
#import "YSBaseView.h"
NS_ASSUME_NONNULL_BEGIN
@interface HomeView : YSBaseView
@end
NS_ASSUME_NONNULL_END
- HomeView.m
#import "HomeView.h"
#import "HomeViewModel.h"
@interface HomeView()
@property (nonatomic,strong) UITableView *homeTableView;
@property (nonatomic,strong) HomeViewModel *homeViewModel;
@end
@implementation HomeView
- (instancetype)initWithViewModel:(id)viewModel{
self.homeViewModel = (HomeViewModel *)viewModel;
return [super initWithViewModel:viewModel];
}
#pragma mark - *********** initViews ***********
- (void)setupViews{
[self addSubview:self.homeTableView];
self.homeTableView
.sd_layout
.spaceToSuperView(UIEdgeInsetsMake(0, 0, 0, 0));
}
#pragma mark - *********** RAC ***********
- (void)racViewModel{
@weakify(self)
[[self.homeViewModel.loadDataSubject takeUntil:self.rac_willDeallocSignal] subscribeNext:^(id _Nullable x) {
@strongify(self)
[self.homeTableView reloadData];
}];
}
#pragma mark - *********** UITabelViewDelegate ***********
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return self.homeViewModel.dataArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *reuseIdetify = @"TableViewCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:reuseIdetify];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:reuseIdetify];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
HomeModel *model = self.homeViewModel.dataArray[indexPath.row];
cell.textLabel.text = model.title;
return cell;
}
#pragma mark - *********** lazy ***********
- (UITableView *)homeTableView{
if (!_homeTableView) {
_homeTableView = [[UITableView alloc] init];
_homeTableView.backgroundColor = UIColorViewBG;
_homeTableView.tableFooterView = [[UIView alloc] init];
_homeTableView.dataSource = self;
_homeTableView.delegate = self;
if (@available(iOS 11.0, *)) {
_homeTableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
}
}
return _homeTableView;
}
- (HomeViewModel *)homeViewModel{
if (!_homeViewModel) {
_homeViewModel = [[HomeViewModel alloc] init];
}
return _homeViewModel;
}
@end
- HomeViewModel.h
#import "YSBaseViewModel.h"
#import "HomeModel.h"
NS_ASSUME_NONNULL_BEGIN
@interface HomeViewModel : YSBaseViewModel
@property (nonatomic,strong) RACSubject *loadDataSubject;
@property (nonatomic,strong) RACCommand *loadDataCommand;
@property (nonatomic,strong) NSMutableArray *dataArray;
@end
NS_ASSUME_NONNULL_END
- HomeViewModel.m
#import "HomeViewModel.h"
@implementation HomeViewModel
- (void)initialize{
@weakify(self)
[self.loadDataCommand.executionSignals.switchToLatest subscribeNext:^(id _Nullable x) {
@strongify(self)
if (x == nil) {
[self.loadDataSubject sendNext:nil];
return;
}
if ([x[@"success"] boolValue]) {
NSArray *arr = x[@"body"];
if ([arr isKindOfClass:[NSArray class]]) {
if (self.dataArray) {
[self.dataArray removeAllObjects];
}
[self.dataArray addObjectsFromArray:arr];
}
[self.loadDataSubject sendNext:@"请求成功"];
}else{
[self.loadDataSubject sendNext:@"请求失败"];
}
}];
}
- (RACCommand *)loadDataCommand{
if (!_loadDataCommand) {
_loadDataCommand = [[RACCommand alloc] initWithSignalBlock:^RACSignal * _Nonnull(id _Nullable input) {
return [RACSignal createSignal:^RACDisposable * _Nullable(id _Nonnull subscriber) {
//mock网络请求获取数据
NSMutableArray *arr = @[].mutableCopy;
for (int i = 0 ; i < 10 ; i++){
HomeModel *home = HomeModel.new;
home.title = [NSString stringWithFormat:@"home : %d",I];
[arr addObject:home];
}
[subscriber sendNext:@{@"success":@"1",@
"body":arr.copy
}];
[subscriber sendCompleted];
return nil;
}];
}];
}
return _loadDataCommand;
}
- (RACSubject *)loadDataSubject{
if (!_loadDataSubject) {
_loadDataSubject = [RACSubject subject];
}
return _loadDataSubject;
}
- (NSMutableArray *)dataArray{
if (!_dataArray) {
_dataArray = [[NSMutableArray alloc] init];
}
return _dataArray;
}
@end
- HomeViewController.h
#import "YSBaseViewController.h"
NS_ASSUME_NONNULL_BEGIN
@interface HomeViewController : YSBaseViewController
@end
NS_ASSUME_NONNULL_END
- HomeViewController.m
#import "HomeViewController.h"
#import "HomeView.h"
#import "HomeViewModel.h"
@interface HomeViewController ()
@property (nonatomic,strong) HomeView *homeView;
@property (nonatomic,strong) HomeViewModel *homeViewModel;
@end
@implementation HomeViewController
#pragma mark - *********** initViews ***********
- (void)addSubviews{
self.title = @"MVVM示例";
[self.view addSubview:self.homeView];
self.homeView.sd_layout.spaceToSuperView(UIEdgeInsetsMake(0, 0, 0, 0));
}
#pragma mark - *********** lazy ***********
- (HomeView *)homeView{
if (!_homeView) {
_homeView = [[HomeView alloc] initWithViewModel:self.homeViewModel];
}
return _homeView;
}
- (HomeViewModel *)homeViewModel{
if (!_homeViewModel) {
_homeViewModel = [[HomeViewModel alloc] init];
[_homeViewModel.loadDataCommand execute:nil];
}
return _homeViewModel;
}
@end
效果
总结
此示例结合了MVVM+RAC做了模型绑定，数据传递的演示，需要了解RAC的几个概念
-
RACCommand可理解为行为执行，执行什么事情 -
RACSubject可理解为得到结果之后干什么 -
RAC功能很强大，很多功能值得大家探索
以上均是自学过程的积累，学到哪记到哪
原创文章，转载请注明出处，谢谢！