CTMediator 的初體驗

接觸的前提

​ 如今對於iOS開發的要求隨着時代的發展，也在漸漸地演變。這幾天看到了不少JD的要求，多多少少都會提到這樣的一個名字-組件化。

我的對於組件化的理解

​ 一開始我對於組件化的理解仍是很模糊的，總以爲很高端很大氣很上檔次的感受。有種看得見摸不着的感受。個人理解就是把項目中的多個小功能組件進行私有庫化，讓他不依賴於項目，下降項目中的耦合性。其實在通常開發中也用到過。CocoaPods我理解爲也是組件化的一種形式。

CTMediator——中介者

​ 我的理解爲跳轉的統一派送中心，有點和物流中轉站差很少。統一處理頁面的跳轉邏輯。

CTMediator使用教程

通常原生頁面的跳轉

#import "CTMediatorTestViewController.h"
#import "CTMediatorPushViewController.h"
@interface CTMediatorTestViewController ()

@property (nonatomic, strong) UIButton *normalPushButton;

@end

@implementation CTMediatorTestViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self.view addSubview:self.normalPushButton];
    [self.normalPushButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.view).offset(100);
        make.left.equalTo(self.view).offset(10);
    }];
}
#pragma mark - 點擊事件
- (void)normalPushButtonTapAction:(UIButton *)button{
    CTMediatorPushViewController *normalPushVC = [[CTMediatorPushViewController alloc]init];
    [self.navigationController pushViewController:normalPushVC animated:YES];
}
#pragma mark - 懶加載
- (UIButton *)normalPushButton{
    if (!_normalPushButton) {
        _normalPushButton = [UIButton buttonWithType:UIButtonTypeCustom];
        [_normalPushButton setTitle:@"常規Push"
                           forState:UIControlStateNormal];
        [_normalPushButton setTitleColor:[UIColor blackColor]
                                forState:UIControlStateNormal];
        [_normalPushButton addTarget:self
                              action:@selector(normalPushButtonTapAction:)
                    forControlEvents:UIControlEventTouchUpInside];
    }
    return _normalPushButton;
}
@end
複製代碼

這就是很簡單原生頁面的跳轉。當咱們一個頁面要去跳轉不一樣的ViewController的時候就要在上面#import "xxxxxxx.h"。長此以往頁面就會有不少的 引入文件。若是這個ViewController能夠在別的項目中用到的話那是否是也要將這些引入的#import "xxxxxxx.h"也一併帶入。這樣就會讓項目耦合性很高。

CTMediator Target-Action 實現頁面跳轉

咱們依然使用上面的那兩個控制器來實現。

1.建立 Target-Action

咱們須要建立一個Target_Push類，在這個類中的.h文件中咱們要添加一個函數來對目標控制器進行實例化，若是須要參數也能夠進行一些賦值操做。

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface Target_Push : NSObject

- (UIViewController *)Action_NativeToCTMediatorPushViewController:(NSDictionary *)params;

@end
複製代碼

而後咱們在.m文件中實現咱們所定義的函數

#import "Target_Push.h"
#import "CTMediatorPushViewController.h"


@implementation Target_Push

- (UIViewController *)Action_NativeToCTMediatorPushViewController:(NSDictionary *)params{
    CTMediatorPushViewController *pushVC = [[CTMediatorPushViewController alloc]init];
    if ([params valueForKey:@""]) {
        
    }
    return pushVC;
}

@end
複製代碼

2.建立 CTMediator 的 Category

咱們在建立的分類中定義這樣的一個函數

#import <CTMediator/CTMediator.h>
#import "BaseViewController.h"

@interface CTMediator (PushActions)

- (BaseViewController *)dtp_mediator_ctmediatorPushViewControllerWithParams:(NSDictionary *)params;

@end
複製代碼

這裏的ViewController統一用了BaseViewController若是是用UIViewController 不要忘記了\#import <UIKit/UIKit.h>。而後咱們來實現這個函數

#import "CTMediator+PushActions.h"
//  1. kCTMediatorTarget_Push字符串 是 Target_xxx.h 中的 xxx 部分
NSString * const kCTMediatorTarget_Push = @"Push";
//  2. kCTMediatorActionNativeTo_NewsViewController 是 Target_xxx.h 中 定義的 Action_xxxx 函數名的 xxx 部分
NSString * const kCTMediatorActionNativeTo_NewsViewController = @"NativeToCTMediatorPushViewController";

@implementation CTMediator (PushActions)

- (BaseViewController *)dtp_mediator_ctmediatorPushViewControllerWithParams:(NSDictionary *)params{
    
    BaseViewController *viewController = [self performTarget:kCTMediatorTarget_Push
                                                      action:kCTMediatorActionNativeTo_NewsViewController
                                                      params:params
                                           shouldCacheTarget:NO];
    if ([viewController isKindOfClass:[BaseViewController class]]) {
        GGLog(@"%@ 實例化頁面成功", NSStringFromSelector(_cmd));
        return viewController;
    }else{
        GGLog(@"%@ 未能實例化頁面", NSStringFromSelector(_cmd));
        return [[BaseViewController alloc]init];
    }
}

@end
複製代碼

調用實現

#import "CTMediatorTestViewController.h"
#import "CTMediator+PushActions.h"
@interface CTMediatorTestViewController ()

@property (nonatomic, strong) UIButton *normalPushButton;

@end

@implementation CTMediatorTestViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self.view addSubview:self.normalPushButton];
    [self.normalPushButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.view).offset(100);
        make.left.equalTo(self.view).offset(10);
    }];
}
#pragma mark - 點擊事件
- (void)normalPushButtonTapAction:(UIButton *)button{
    NSDictionary *params = @{@"title":@"CTMediatorPushViewController"};
    BaseViewController *pushVC = [[CTMediator sharedInstance] dtp_mediator_ctmediatorPushViewControllerWithParams:params];
    [self.navigationController pushViewController:pushVC animated:YES];
}
#pragma mark - 懶加載
- (UIButton *)normalPushButton{
    if (!_normalPushButton) {
        _normalPushButton = [UIButton buttonWithType:UIButtonTypeCustom];
        [_normalPushButton setTitle:@"Target-Action 實現頁面跳轉"
                           forState:UIControlStateNormal];
        [_normalPushButton setTitleColor:[UIColor blackColor]
                                forState:UIControlStateNormal];
        [_normalPushButton addTarget:self
                              action:@selector(normalPushButtonTapAction:)
                    forControlEvents:UIControlEventTouchUpInside];
    }
    return _normalPushButton;
}
@end
複製代碼

可是使用起來的過程 感受彷佛尚未以前的直接Push凡是簡單。多是我如今的理解仍是不夠深吧~~~