iOS MVC和MVP详解

作者: ios小蜗牛 | 来源:发表于2020-05-28 11:21 被阅读0次

iOS-19 MVC和MVVM
iOS MVC和MVP详解
iOS开发学习笔记：对MVC、MVVM建立认识
iOS 架构模式--解密 MVC，MVP，MVVM以及VIPER
iOS开发中的设计模式/Design patterns in i
iOS MVC、MVVM、MVP详解
iOS 软件架构 - MVC, MVP, MVVM 和 VIPE
确认过眼神，一眼就知道是MVP！
杂谈: MVC/MVP/MVVM （一）
杂谈: MVC/MVP/MVVM （一）

常规MVC

优点：
1.Model可复用
2.View可复用
3.耦合性低

缺点：
1.控制器臃肿
2.View控件暴露在外，不安全，封装性差

Model的实现

#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

@interface MVCModel : NSObject

/** url */
@property (nonatomic, copy) NSString *photoUrl;

/** title */
@property (nonatomic, copy) NSString *titleStr;

@end

NS_ASSUME_NONNULL_END

View的实现

// 头文件
#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface MVCView : UIView

/** 图片 */
@property (nonatomic, strong) UIImageView *imageView;

/** 文本 */
@property (nonatomic, strong) UILabel *titleLbl;

@end

NS_ASSUME_NONNULL_END

// 实现文件
#import "MVCView.h"

@implementation MVCView

- (instancetype)initWithFrame:(CGRect)frame{
    
    if (self = [super initWithFrame:frame]) {
        
        [self createUI];
    }
    return self;
}


/**
 创建控件
 */
- (void)createUI{
    
    UIImageView *imageView = [[UIImageView alloc] init];
    [self addSubview:imageView];
    self.imageView = imageView;

    UILabel *titleLbl = [[UILabel alloc] init];
    titleLbl.textColor = [UIColor blackColor];
    titleLbl.font = [UIFont systemFontOfSize:16];
    titleLbl.textAlignment = NSTextAlignmentCenter;
    [self addSubview:titleLbl];
    self.titleLbl = titleLbl;
}


- (void)layoutSubviews{
    
    [super layoutSubviews];
    
    self.imageView.frame = CGRectMake(0, 0, 100, 100);
    self.titleLbl.frame = CGRectMake(0, 100, 100, 50);
}


@end

Controller的实现

#import "MVCViewController.h"
#import "MVCView.h"
#import "MVCModel.h"

@interface MVCViewController ()

@end

@implementation MVCViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    [self createUI];
}

#pragma mark - 搭建界面
- (void)createUI{

    // 创建视图
    MVCView *view = [[MVCView alloc] initWithFrame:CGRectMake(100, 100, 100, 150)];
    [self.view addSubview:view];
    
    // 创建model
    MVCModel *model = [[MVCModel alloc] init];
    model.photoUrl = @"classStudent";
    model.titleStr = @"早自习";
    
    // 赋值
    view.imageView.image = [UIImage imageNamed:model.photoUrl];
    view.titleLbl.text = model.titleStr;
}

@end

MVC变种

优点：
1.减少控制器的代码量
2.View的封装性强，外界无法看到内部控件实现

缺点：
1.耦合性变高
2.model，view无法单独复用

Model的实现

#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

@interface VariantModel : NSObject

/** url */
@property (nonatomic, copy) NSString *photoUrl;

/** title */
@property (nonatomic, copy) NSString *titleStr;

@end

NS_ASSUME_NONNULL_END

View的实现

// 头文件
#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@class VariantModel;

@interface VariantView : UIView

/** model */
@property (nonatomic, strong) VariantModel *model;

@end

NS_ASSUME_NONNULL_END

// 实现文件
#import "VariantView.h"
#import "VariantModel.h"

@interface VariantView ()

/** 图片 */
@property (nonatomic, strong) UIImageView *imageView;

/** 文本 */
@property (nonatomic, strong) UILabel *titleLbl;

@end

@implementation VariantView

- (instancetype)initWithFrame:(CGRect)frame{
    
    if (self = [super initWithFrame:frame]) {
        
        [self createUI];
    }
    return self;
}


/**
 创建控件
 */
- (void)createUI{
    
    UIImageView *imageView = [[UIImageView alloc] init];
    [self addSubview:imageView];
    self.imageView = imageView;
    
    UILabel *titleLbl = [[UILabel alloc] init];
    titleLbl.textColor = [UIColor blackColor];
    titleLbl.font = [UIFont systemFontOfSize:16];
    titleLbl.textAlignment = NSTextAlignmentCenter;
    [self addSubview:titleLbl];
    self.titleLbl = titleLbl;
}


/**
 设置frame
 */
- (void)layoutSubviews{
    
    [super layoutSubviews];
    
    self.imageView.frame = CGRectMake(0, 0, 100, 100);
    self.titleLbl.frame = CGRectMake(0, 100, 100, 50);
}


/**
 赋值
 */
- (void)setModel:(VariantModel *)model{
    
    _model = model;
    self.imageView.image = [UIImage imageNamed:model.photoUrl];
    self.titleLbl.text = model.titleStr;
}

Controller的实现

#import "VariantViewController.h"
#import "VariantModel.h"
#import "VariantView.h"

@interface VariantViewController ()

@end

@implementation VariantViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    [self createUI];
}

#pragma mark - 搭建界面
- (void)createUI{
    
    // 创建视图
    VariantView *view = [[VariantView alloc] initWithFrame:CGRectMake(100, 100, 100, 150)];
    [self.view addSubview:view];
    
    // 创建model
    VariantModel *model = [[VariantModel alloc] init];
    model.photoUrl = @"classStudent";
    model.titleStr = @"中自习";
    
    // 赋值
    view.model = model;
}

@end

MVP

优点：
1.Model可复用
2.View可复用
3.耦合性低
4.减少控制器的代码量

缺点：
1.总体代码量增大

Model的实现

#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

@interface MVPModel : NSObject

/** url */
@property (nonatomic, copy) NSString *photoUrl;

/** title */
@property (nonatomic, copy) NSString *titleStr;

@end

NS_ASSUME_NONNULL_END

View的实现

// 头文件
#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface MVPView : UIView

/** 图片 */
@property (nonatomic, strong) UIImageView *imageView;

/** 文本 */
@property (nonatomic, strong) UILabel *titleLbl;

@end

NS_ASSUME_NONNULL_END

// 实现文件
#import "MVPView.h"

@implementation MVPView

- (instancetype)initWithFrame:(CGRect)frame{
    
    if (self = [super initWithFrame:frame]) {
        
        [self createUI];
    }
    return self;
}


/**
 创建控件
 */
- (void)createUI{
    
    UIImageView *imageView = [[UIImageView alloc] init];
    [self addSubview:imageView];
    self.imageView = imageView;
    
    UILabel *titleLbl = [[UILabel alloc] init];
    titleLbl.textColor = [UIColor blackColor];
    titleLbl.font = [UIFont systemFontOfSize:16];
    titleLbl.textAlignment = NSTextAlignmentCenter;
    [self addSubview:titleLbl];
    self.titleLbl = titleLbl;
}


- (void)layoutSubviews{
    
    [super layoutSubviews];
    
    self.imageView.frame = CGRectMake(0, 0, 100, 100);
    self.titleLbl.frame = CGRectMake(0, 100, 100, 50);
}

@end

Controller的实现

#import "MVPViewController.h"
#import "MVPPresenter.h"

@interface MVPViewController ()

@property (strong, nonatomic) MVPPresenter *presenter;

@end

@implementation MVPViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    [self createUI];
}

#pragma mark - 搭建界面
- (void)createUI{

    self.presenter = [[MVPPresenter alloc] initWithViewController:self];
}

@end

Presenter的实现

// 头文件
#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface MVPPresenter : NSObject

/**
 启动方法
 */
- (instancetype)initWithViewController:(UIViewController *)controller;

@end

NS_ASSUME_NONNULL_END

// 实现文件
#import "MVPPresenter.h"
#import "MVPView.h"
#import "MVPModel.h"

@interface MVPPresenter ()

/** viewController */
@property (nonatomic, weak) UIViewController *controller;

@end

@implementation MVPPresenter

- (instancetype)initWithViewController:(UIViewController *)controller{
    
    if (self = [super init]) {
        
        self.controller = controller;
        
        [self createUI];
    }
    return self;
}


/**
 创建控件
 */
- (void)createUI{
    
    // 创建视图
    MVPView *view = [[MVPView alloc] initWithFrame:CGRectMake(100, 100, 100, 150)];
    [self.controller.view addSubview:view];
    
    // 创建model
    MVPModel *model = [[MVPModel alloc] init];
    model.photoUrl = @"classStudent";
    model.titleStr = @"晚自习";
    
    // 赋值
    view.imageView.image = [UIImage imageNamed:model.photoUrl];
    view.titleLbl.text = model.titleStr;
}

@end

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