網(wǎng)上關(guān)于MVVM的介紹太多产艾，我不再啰嗦了疤剑，直接上干貨滑绒。

ps：沒(méi)使用任何第三方，適合剛接觸MVVM的同學(xué)拿來(lái)參考隘膘，如果您已是高手疑故，希望您能提出寶貴意見(jiàn)。謝謝

架構(gòu)還是有必要了解一下的

MVVM架構(gòu)圖解.png

項(xiàng)目結(jié)構(gòu)目錄.png

都知道目錄是這樣弯菊，里面代碼邏輯怎么實(shí)現(xiàn)呢纵势？詳見(jiàn)頁(yè)底demo傳送門

1、Controller 負(fù)責(zé) ViewManager 與 ViewModel 之間的綁定

在這里你只需import兩個(gè)文件ViewManger管钳，CustomViewModel

.m 全部代碼

#import "FirstVC.h"
#import "ViewManager.h"
#import "CustomViewModel.h"
@interface FirstVC ()
@property(nonatomic,strong)ViewManager *viewManager;
@property(nonatomic,strong)CustomViewModel *viewModel;

@end

@implementation FirstVC

- (void)viewDidLoad {
    [super viewDidLoad];
    //讓View的點(diǎn)擊事件交給viewManager
    [self.viewManager managerBtnBlockWithView:self.view];
    //實(shí)現(xiàn)viewModel 與 View 的綁定
    [self.viewModel fetchRequestCustomDataWithModelArray:^(NSMutableArray *array){
        self.viewManager.setViewBlock(array);
    }];
}

- (ViewManager *)viewManager {
   return  LB_LAZY(_viewManager, ({
        ViewManager *manager = [ViewManager new];
        manager;
    }));
}
- (CustomViewModel *)viewModel {
    return LB_LAZY(_viewModel, ({
        CustomViewModel *cVM = [CustomViewModel new];
        cVM;
    }));
}

2钦铁、ViewModel 處理業(yè)務(wù)邏輯

.h文件

#import <Foundation/Foundation.h>

typedef void(^modelArrayBlock) (NSMutableArray *array);

@interface CustomViewModel : NSObject

- (void)fetchRequestCustomDataWithModelArray:(modelArrayBlock)arrayBlock;

@end

.m文件

@implementation CustomViewModel

- (void)fetchRequestCustomDataWithModelArray:(modelArrayBlock)arrayBlock{
   [[ModelHandle new]requestCustomDataWithHandleBlock:^(NSArray *array) {
       arrayBlock((NSMutableArray *)array);
   }];
}
@end

3、ModelHandle 用來(lái)處理網(wǎng)絡(luò)請(qǐng)求才漆，轉(zhuǎn)化為模型數(shù)據(jù)牛曹，與ViewModel，Model交互醇滥，實(shí)現(xiàn)ViewModel 與 Model 解耦

.h文件

/**
 * 處理數(shù)據(jù)黎比，將數(shù)據(jù)轉(zhuǎn)化為模型 -->  提供給viewModel
 *
 */
#import <Foundation/Foundation.h>

typedef void(^ModelHandleBlock)(NSArray *array);

@interface ModelHandle : NSObject
//請(qǐng)求數(shù)據(jù)
- (void)requestCustomDataWithHandleBlock:(ModelHandleBlock)handleBlcok;

@end

.m文件

#import "ModelHandle.h"
#import "CustomModel.h"

@interface ModelHandle ()

@property (nonatomic, strong) NSMutableArray *dataArrayList;

@end

@implementation ModelHandle
//    模擬網(wǎng)絡(luò)請(qǐng)求
- (void)requestCustomDataWithHandleBlock:(ModelHandleBlock)handleBlcok {
    NSArray *array = @[@{@"name":@"小明",@"age":@"12"}];
    for (NSDictionary *dic in array) {
        CustomModel *model = [CustomModel new];
        [model setValuesForKeysWithDictionary:dic];
        [self.dataArrayList addObject:model];
    }
    handleBlcok(self.dataArrayList);
}
- (NSMutableArray *)dataArrayList {
    return LB_LAZY(_dataArrayList, @[].mutableCopy);
}
@end

4、ViewManager 用來(lái)處理View的常規(guī)事件腺办，負(fù)責(zé)管理View

.h 文件

#import <Foundation/Foundation.h>
@class CustomView;

typedef  void(^setCustomViewBlock)(NSArray *array);

@interface ViewManager : NSObject

@property (nonatomic,copy)setCustomViewBlock setViewBlock;

@property (nonatomic,weak)CustomView *customView;

- (void)managerBtnBlockWithView:(UIView *)supView;
@end

.m文件

#import "ViewManager.h"
#import "CustomView.h"

@implementation ViewManager

- (void)managerBtnBlockWithView:(UIView *)supView{
    LBWeakSelf(self)
    [supView addSubview:self.customView];
    weakself.customView.btnActBlock = ^(UIButton *sender) {
        NSLog(@"%@",sender.currentTitle);
    };
    weakself.setViewBlock = ^(NSArray *array) {
        weakself.customView.setVBlock(array);
    };
}
- (CustomView *)customView {
    return LB_LAZY(_customView, ({
        CustomView *cV = [[NSBundle mainBundle] loadNibNamed:@"CustomView" owner:nil options:nil].firstObject;
        cV;
    }));
}
@end

5焰手、View 用來(lái)呈現(xiàn)用戶界面

.h 文件

#import <UIKit/UIKit.h>
/**
 *  view的事件 全部交由viewManager 處理
 */
typedef void (^btnIsClicked)(UIButton *sender);
typedef void (^setViews)(NSArray *array);


@interface CustomView : UIView

@property (nonatomic,copy)btnIsClicked btnActBlock;

@property (nonatomic,copy)setViews setVBlock;

@end

.m 文件

#import "CustomView.h"
#import "CustomModel.h"
@interface CustomView ()

@property (weak, nonatomic) IBOutlet UILabel *nameLabel;
@property (weak, nonatomic) IBOutlet UILabel *ageLabel;


@end

@implementation CustomView
- (IBAction)firstBtnAction:(UIButton *)sender {
    self.btnActBlock(sender);
}

- (IBAction)sectionBtnAction:(UIButton *)sender {
    self.btnActBlock(sender);
}
- (void)awakeFromNib {
    [super awakeFromNib];
    self.frame = CGRectMake(0, 0, kScreenWidth, kScreenHeight);
    LBWeakSelf(self)
    self.setVBlock = ^(NSArray *array) {
        CustomModel *model = array.firstObject;
        weakself.nameLabel.text = model.name;
        weakself.ageLabel.text = model.age;
    };
}
@end

6、Model 用來(lái)呈現(xiàn)數(shù)據(jù)

.h 文件

#import <Foundation/Foundation.h>

@interface CustomModel : NSObject
//客戶編號(hào)
@property(copy,nonatomic)NSString *name;
//客戶名稱
@property(copy,nonatomic)NSString *age;

@end

demo傳送門