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現在許多App的首頁都是采用的九宮格形式，一級菜單（標題）下面跟二級菜單（圖標+標題）。對于這樣一個頁面來說，collectionView能夠極好的適配這樣的形式。一級菜單使用section的headView實現，二級菜單使用collectionViewCell實現。

代碼類似這樣下：

//創建ColletionView
- (void) makeColletionView{
    self.collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(15, STATUSBAR_HEIGHT + 40, SCREEN_WIDTH - 30, SCREEN_HEIGHT - STATUSBAR_HEIGHT - 40) collectionViewLayout:self.layout];
    self.collectionView.backgroundColor = [UIColor whiteColor];
    self.collectionView.dataSource = self;
    self.collectionView.delegate = self;
    
    [self.view addSubview: self.collectionView];
   // [self.collectionView registerNib:[UINib nibWithNibName:@"ShopManageCollectionViewCell" bundle:nil] forCellWithReuseIdentifier:@"ShopManageCollectionViewCell"];
    [self.collectionView registerClass:[ShopManageCell class] forCellWithReuseIdentifier:@"cell"];
    //注冊頭視圖
    //[self.collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"headview"];
    //注冊尾視圖
    //[self.collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:@"footview"];
}

- (UICollectionViewFlowLayout *) layout{
    if (_layout == nil) {
        _layout = [[UICollectionViewFlowLayout alloc]init];
        //_layout.itemSize = CGSizeMake((ScreenWidth - 20)/3, 25);
        //_layout.minimumLineSpacing = -20;
        _layout.sectionInset = UIEdgeInsetsMake(0, 0, 10, 0);
        _layout.headerReferenceSize = CGSizeMake(SCREEN_WIDTH, 30);
    }
    return _layout;
}


//Delegate
//一級菜單
- (NSInteger) numberOfSectionsInCollectionView:(UICollectionView *)collectionView{
    
    return 3;
}

//二級菜單
- (NSInteger) collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
    
    return 3;
}

//一級菜單實現
- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView
           viewForSupplementaryElementOfKind:(NSString *)kind
                                 atIndexPath:(NSIndexPath *)indexPath {
    
    UICollectionReusableView *reuseablebiew = nil;
    
    if ([kind isEqualToString:@"UICollectionElementKindSectionHeader"]) {
        //這是頭視圖
        [self.collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:[NSString stringWithFormat:@"headview %@",indexPath]];
        UICollectionReusableView *headeview = [collectionView dequeueReusableSupplementaryViewOfKind:kind withReuseIdentifier:[NSString stringWithFormat:@"headview %@",indexPath] forIndexPath:indexPath];
        
        //添加Label
        UILabel *headerLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 0, SCREEN_WIDTH - 80, 30)];
        headerLabel.font = [UIFont systemFontOfSize:17 weight:UIFontWeightSemibold];
        headerLabel.textColor = UIColorFromHex(0x4D4D4D);
        //添加邊緣修飾圖
        UIImageView *borderView = [[UIImageView alloc] initWithFrame:CGRectMake(8, 6, 2, 16)];
        [borderView setImage:[UIImage imageNamed:@"icon_decorate_blue"]];
        if(indexPath.section == 0){
            headerLabel.text = [NSString stringWithFormat:@"%@",NSLocalizedString(@"Home_DayWork", nil)];
        }else if (indexPath.section == 1){
            headerLabel.text = [NSString stringWithFormat:@"%@",NSLocalizedString(@"Home_Common", nil)];
        }else if (indexPath.section == 2){
            headerLabel.text = [NSString stringWithFormat:@"%@",NSLocalizedString(@"Home_Study", nil)];
        }else{
            headerLabel.text = [NSString stringWithFormat:@" "];
        }
        [headeview addSubview:borderView];
        [headeview addSubview:headerLabel];
        
        reuseablebiew = headeview;
    }
    return reuseablebiew;
    
}

//二級菜單實現
- (UICollectionViewCell *) collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
    //    ShopManageCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"ShopManageCell" forIndexPath:indexPath];
    
    ShopManageCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"cell" forIndexPath:indexPath];
    
    if (indexPath.section == 0) {
        if(indexPath.row == 0){
            //警情上報
            [cell.icon setImage:[UIImage imageNamed:@"icon_alarm_upload"]];
            [cell.title setText:NSLocalizedString(@"title_alarmUpload", nil)];
        }else if(indexPath.row == 1){
            //協查協辦
            [cell.icon setImage:[UIImage imageNamed:@"icon_assist"]];
            [cell.title setText:NSLocalizedString(@"title_assist", nil)];
        }
    }else if (indexPath.section == 1) {
        if (indexPath.row == 0) {
            //簽到打卡
            [cell.icon setImage:[UIImage imageNamed:@"icon_clockIn"]];
            [cell.title setText:NSLocalizedString(@"title_clockIn", nil)];   
        }else if (indexPath.row == 1) {
            //新聞資訊
            [cell.icon setImage:[UIImage imageNamed:@"icon_news"]];
            [cell.title setText:NSLocalizedString(@"title_news", nil)];
        }else if(indexPath.row == 2){
            //排行榜
            [cell.icon setImage:[UIImage imageNamed:@"icon_ranking_list"]];
            [cell.title setText:NSLocalizedString(@"排行榜", nil)];
        }
    }
    else if (indexPath.section == 2) {
        if (indexPath.row == 0) {
            //活動報名
            [cell.icon setImage:[UIImage imageNamed:@"icon_join_activity"]];
            [cell.title setText:NSLocalizedString(@"活動報名", nil)];
        }else  if (indexPath.row == 1) {
           //志愿者申請
           [cell.icon setImage:[UIImage imageNamed:@"icon_volunteer"]];
           [cell.title setText:NSLocalizedString(@"志愿者申請", nil)];
        }else  if (indexPath.row == 2) {
           //安全小知識
           [cell.icon setImage:[UIImage imageNamed:@"icon_safe_knowledge"]];
           [cell.title setText:NSLocalizedString(@"安全小知識", nil)];
        }
    }

    return cell;
}

最近在做一個新項目的時候有這么一個情況，登錄之后進入首頁有五個角色，每個角色的菜單都會不同。如果只有細微的差別的話，我會選擇在Delegate里面添加一些判斷。但是我接到的設計方案五個角色菜單的差距還是比較大的。如果要硬寫判斷可能會有比較大的代碼量，且復雜易出錯。對閱讀代碼也會不太友好。所以我想了別的辦法控制。

想法一：

仿照多局點的方式，建立多個主頁文件（HomePage），在登錄后判斷完權限以后直接加載對應角色的主頁面。這樣搞的話至少看起來會舒服一點，沒有那么多的判斷，但是肉眼可見的增加了代碼量和維護成本。如果只有少數幾個角色，且角色差距極大我覺得這樣的方式還不錯。但角色多的話這種方式就不合適了。

想法二：

因為上一個想法的失敗，所以回歸到只用一個文件來做判斷的路子上。那就一定是要寫判斷的，但能不能不在Delegate里面寫判斷呢。Delegate里面清清爽爽的才是真香。

然后想到了用dataSource就可以了呀（section表示一級標題，rows表示二級標題），習慣性處理簡單主界面的我都快要忘了還有DataSources了。那就開始搞起來吧。cell保持不動，也就我們的dataSources里面需要有icon和title，還需要有一個字段來表示最后的跳轉。那就新建一個類來表示吧 homePageModel。

最開始我想在homePageModel添加image，title和controller三個字段來適應上面的要求。但動手的時候突然覺得controller可能會有些問題，因為我們跳轉的時候可能會傳不同的參數。所以決定把這個任務交給主頁來做，在

homePageModel里面用枚舉定義一個HomePageCode。通過code來判斷執行怎樣的跳轉。

代碼如下：

//HomePageModel.h
typedef NS_ENUM(NSInteger , HomePageCode) {
    //日常工作
    HomePage_AlarmUpload = 1,//警情上報
    HomePage_AlarmAccept = 2,//警情受理
    HomePage_AlarmAssist = 3,//協查協辦
    HomePage_AlarmDistribute = 4,//協查派發
    HomePage_Patrol = 5,//安防巡邏
    HomePage_PatrolChck = 6,//巡防督查
    //常用功能
    HomePage_ClockIn = 7,//簽到打卡
    HomePage_News = 8,//新聞資訊
    HomePage_Scan = 9,//掃一掃
    HomePage_RankingList = 10,//排行榜
    HomePage_StaffManage = 11,//人員管理
    HomePage_VolunteerCheck = 12,//志愿者審核
    //參加活動
    HomePage_Actity = 13,//活動報名
    HomePage_Volunteer = 14,//志愿者申請
    
    //信息處理
    HomePage_InfoSearch = 15,//信息查詢
    HomePage_InfoDistribute = 16,//信息發布
    
    //學習培訓
    HomePage_SafeKnowledge = 17,//安全小知識
    HomePage_Study = 18,//學習培訓
};



@interface HomePageModel : NSObject

@property (nonatomic, strong) NSString *name;
@property (nonatomic, strong) UIImage *image;
//@property (nonatomic, strong) UIViewController *controller;
@property (nonatomic, assign) HomePageCode code;

+ (HomePageModel *)addModelWithName:(NSString *)name ImageName:(NSString *)imageName Code:(HomePageCode)code;

@end

//HomePageModel.m
+(HomePageModel *)addModelWithName:(NSString *)name ImageName:(NSString *)imageName Code:(HomePageCode)code{
    HomePageModel *homepage = [[HomePageModel alloc] init];
    homepage.name = getLocalizedString(name, nil);
    homepage.image = [UIImage imageNamed:imageName];
    homepage.code = code;
    return homepage;
}

這時我又有了兩個想法：

想法一：再添加一個HomePageGroup（字段有name和array）表示一級菜單，name表示一級菜單的標題，array表示每個一級菜單的內容，即二級菜單。用一個數組來存放一級菜單，數組的count就是一級菜單的數量。
想法二：然后用一個字典來保存每個角色的主頁菜單，key<NSString>代表一級菜單， value <NSArray>表示二級菜單。然后就可以判斷字段中key的數量來表示一級菜單的數量，內容表示一級菜單的title。通過rows取到二級菜單的詳情。

寫完之后覺得覺得代碼還是太長了，幾個角色里面會有相同的功能點，就重復了多次。然后我決定把所有的item對照上面的枚舉定義全部寫到 HomePageModel 里面。這樣就省掉了重復的添加過程。然后再新建一個 HomePageMenu 類來表示菜單整體，定義一個枚舉來表示角色名稱，并定義一個方法通過角色來獲取menu數組。這樣在主頁里面就可以通過一行代碼搞定了。

代碼如下：

//  HomePageModel.h
//  菜單功能點配置

#import <Foundation/Foundation.h>

typedef NS_ENUM(NSInteger , HomePageCode) {
    //日常工作
    HomePage_AlarmUpload = 1,//警情上報
    HomePage_AlarmAccept = 2,//警情受理
    HomePage_AlarmAssist = 3,//協查協辦
    HomePage_AlarmDistribute = 4,//協查派發
    HomePage_Patrol = 5,//安防巡邏
    HomePage_PatrolChck = 6,//巡防督查
    //常用功能
    HomePage_ClockIn = 7,//簽到打卡
    HomePage_News = 8,//新聞資訊
    HomePage_Scan = 9,//掃一掃
    HomePage_RankingList = 10,//排行榜
    HomePage_StaffManage = 11,//人員管理
    HomePage_VolunteerCheck = 12,//志愿者審核
    //參加活動
    HomePage_Actity = 13,//活動報名
    HomePage_Volunteer = 14,//志愿者申請
    
    //信息處理
    HomePage_InfoSearch = 15,//信息查詢
    HomePage_InfoDistribute = 16,//信息發布
    
    //學習培訓
    HomePage_SafeKnowledge = 17,//安全小知識
    HomePage_Study = 18,//學習培訓
};
@protocol HomePageModel <NSObject>

@end

@interface HomePageGroup : NSObject

@property (nonatomic, strong) NSString *name;
@property (nonatomic, strong) NSMutableArray<HomePageModel> *array;

+ (HomePageGroup *)addGroupWithName:(NSString *)name Array:(NSMutableArray<HomePageModel> *)array;
@end

@interface HomePageModel : NSObject

@property (nonatomic, strong) NSString *name;
@property (nonatomic, strong) UIImage *image;
@property (nonatomic, strong) UIViewController *controller;
@property (nonatomic, assign) HomePageCode code;

+ (HomePageModel *)addModelWithName:(NSString *)name ImageName:(NSString *)imageName Code:(HomePageCode)code;

//警情上報
+ (HomePageModel *)AlarmUpload;
//警情受理
+ (HomePageModel *)AlarmAccept;
//協查協辦
+ (HomePageModel *)AlarmAssist;
//協查派發
+ (HomePageModel *)AlarmDistribute;
//安防巡邏
+ (HomePageModel *)Patrol;
//巡防督查
+ (HomePageModel *)PatrolCheck;

//簽到打卡
+ (HomePageModel *)ClockIn;
//新聞資訊
+ (HomePageModel *)News;
//掃一掃
+ (HomePageModel *)Scan;
//排行榜
+ (HomePageModel *)RankingList;
//人員管理
+ (HomePageModel *)StaffManage;
//志愿者審核
+ (HomePageModel *)VolunteerCheck;

//活動報名
+ (HomePageModel *)Actity;
//志愿者申請
+ (HomePageModel *)Volunteer;

//信息查詢
+ (HomePageModel *)InfoSearch;
//信息發布
+ (HomePageModel *)InfoDistribute;

//安全小知識
+ (HomePageModel *)SafeKnowledge;
//學習培訓
+ (HomePageModel *)Study;

@end

//  HomePageModel.m

#import "HomePageModel.h"
#import "Util.h"

@implementation HomePageGroup

+ (HomePageGroup *)addGroupWithName:(NSString *)name Array:(NSMutableArray<HomePageModel> *)array{
    HomePageGroup *group = [[HomePageGroup alloc] init];
    group.name = getLocalizedString(name, nil);
    group.array = array;
    
    return group;
}
@end


@implementation HomePageModel

//警情上報
+ (HomePageModel *)AlarmUpload{
    return [HomePageModel addModelWithName:@"title_alarmUpload" ImageName:@"icon_alarm_upload" Code:HomePage_AlarmUpload];
}
//警情受理
+ (HomePageModel *)AlarmAccept{
    return [HomePageModel addModelWithName:@"title_alarmAccept" ImageName:@"icon_alarm_accept" Code:HomePage_AlarmAccept];
}
//協查協辦
+ (HomePageModel *)AlarmAssist{
    return [HomePageModel addModelWithName:@"title_assist" ImageName:@"icon_assist" Code:HomePage_AlarmAssist];
}
//協查派發
+ (HomePageModel *)AlarmDistribute{
    return [HomePageModel addModelWithName:@"title_alarmDistribute" ImageName:@"icon_alarm_manage" Code:HomePage_AlarmDistribute];
}
//安防巡邏
+ (HomePageModel *)Patrol{
    return [HomePageModel addModelWithName:@"title_patrol" ImageName:@"icon_patrol" Code:HomePage_Patrol];
}
//巡防督查
+ (HomePageModel *)PatrolCheck{
    return [HomePageModel addModelWithName:@"title_alarmCheck" ImageName:@"icon_patrol_check" Code:HomePage_PatrolChck];
}

//簽到打卡
+ (HomePageModel *)ClockIn{
    return [HomePageModel addModelWithName:@"title_clockIn" ImageName:@"icon_clockIn" Code:HomePage_ClockIn];
}
//新聞資訊
+ (HomePageModel *)News{
    return [HomePageModel addModelWithName:@"title_news" ImageName:@"icon_news" Code:HomePage_News];
}
//掃一掃
+ (HomePageModel *)Scan{
    return [HomePageModel addModelWithName:@"title_scan" ImageName:@"icon_home_scan" Code:HomePage_Scan];
}
//排行榜
+ (HomePageModel *)RankingList{
    return [HomePageModel addModelWithName:@"title_rankingList" ImageName:@"icon_ranking_list" Code:HomePage_RankingList];
}
//人員管理
+ (HomePageModel *)StaffManage{
    return [HomePageModel addModelWithName:@"title_staffManage" ImageName:@"icon_chat_group" Code:HomePage_StaffManage];
}
//志愿者審核
+ (HomePageModel *)VolunteerCheck{
    return [HomePageModel addModelWithName:@"title_volunteeerCheck" ImageName:@"icon_volunteer_check" Code:HomePage_VolunteerCheck];
}

//活動報名
+ (HomePageModel *)Actity{
    return [HomePageModel addModelWithName:@"title_activity" ImageName:@"icon_volunteer_check" Code:HomePage_Actity];
}
//志愿者申請
+ (HomePageModel *)Volunteer{
    return [HomePageModel addModelWithName:@"title_volunteeer" ImageName:@"icon_volunteer" Code:HomePage_Volunteer];
}

//信息查詢
+ (HomePageModel *)InfoSearch{
    return [HomePageModel addModelWithName:@"title_infoSearch" ImageName:@"icon_info_search" Code:HomePage_InfoSearch];
}
//信息發布
+ (HomePageModel *)InfoDistribute{
    return [HomePageModel addModelWithName:@"title_infoDistribute" ImageName:@"icon_info_distribute" Code:HomePage_InfoDistribute];
}

//安全小知識
+ (HomePageModel *)SafeKnowledge{
    return [HomePageModel addModelWithName:@"title_safeKnowledge" ImageName:@"icon_safe_knowledge" Code:HomePage_SafeKnowledge];
}
//學習培訓
+ (HomePageModel *)Study{
    return [HomePageModel addModelWithName:@"title_study" ImageName:@"icon_study" Code:HomePage_Study];
}


+(HomePageModel *)addModelWithName:(NSString *)name ImageName:(NSString *)imageName Code:(HomePageCode)code{
    HomePageModel *homepage = [[HomePageModel alloc] init];
    homepage.name = getLocalizedString(name, nil);//這是個類似NSLocalizedString的方法
    homepage.image = [UIImage imageNamed:imageName];
    homepage.code = code;
    return homepage;
}
@end

//  HomePageMenu.h
//  菜單配置

#import <Foundation/Foundation.h>

typedef NS_ENUM(NSInteger , UserRole) {
    //角色
    UserRole_Volunteer = 1,//志愿者
    UserRole_Propery = 2,//物業人員
    UserRole_ProManage = 3,//物管人員
    UserRole_Police = 4,//民警
    UserRole_PoliceManage = 5,//領導

};

@interface HomePageMenu : NSObject

+(NSMutableArray *)MenuWithRole:(UserRole)role;

@end

//  HomePageMenu.m

#import "HomePageMenu.h"
#import "Util.h"

@implementation HomePageMenu

+(NSMutableArray *)MenuWithRole:(UserRole)role{
    
    NSMutableArray *menuArray = [NSMutableArray array];
    
    if (role == UserRole_Volunteer) {
        //志愿者
        NSMutableArray<HomePageModel> *arrayDayWork = [NSMutableArray<HomePageModel> array];
        [arrayDayWork addObject:[HomePageModel AlarmUpload]];//警情上報
        [arrayDayWork addObject:[HomePageModel AlarmAssist]];//協查協辦
        HomePageGroup *groupDayWork = [HomePageGroup addGroupWithName:@"Home_DayWork" Array:arrayDayWork];
        
        NSMutableArray<HomePageModel> *arrayCommon = [NSMutableArray<HomePageModel> array];
        [arrayCommon addObject:[HomePageModel ClockIn]];//簽到打卡
        [arrayCommon addObject:[HomePageModel News]];//新聞資訊
        [arrayCommon addObject:[HomePageModel RankingList]];//排行榜
        HomePageGroup *groupCommon = [HomePageGroup addGroupWithName:@"Home_Common" Array:arrayCommon];
        
        NSMutableArray<HomePageModel> *arrayStudy = [NSMutableArray<HomePageModel> array];
        [arrayStudy addObject:[HomePageModel Actity]];//活動報名
        [arrayStudy addObject:[HomePageModel Volunteer]];//志愿者申請
        [arrayStudy addObject:[HomePageModel SafeKnowledge]];//安全小知識
        HomePageGroup *groupStudy = [HomePageGroup addGroupWithName:@"Home_Activity" Array:arrayStudy];
        [menuArray addObjectsFromArray:@[groupDayWork, groupCommon, groupStudy]];

    }else if (role == UserRole_Propery){
        //物業巡邏員
        NSMutableArray<HomePageModel> *arrayDayWork = [NSMutableArray<HomePageModel> array];
        [arrayDayWork addObject:[HomePageModel Patrol]];//安保巡邏
        [arrayDayWork addObject:[HomePageModel AlarmUpload]];//警情上報
        [arrayDayWork addObject:[HomePageModel AlarmAssist]];//協查協辦
        HomePageGroup *groupDayWork = [HomePageGroup addGroupWithName:@"Home_DayWork" Array:arrayDayWork];
        
        NSMutableArray<HomePageModel> *arrayCommon = [NSMutableArray<HomePageModel> array];
        [arrayCommon addObject:[HomePageModel ClockIn]];//簽到打卡
        [arrayCommon addObject:[HomePageModel News]];//新聞資訊
        [arrayCommon addObject:[HomePageModel Scan]];//掃一掃
        HomePageGroup *groupCommon = [HomePageGroup addGroupWithName:@"Home_Common" Array:arrayCommon];
        
        NSMutableArray<HomePageModel> *arrayStudy = [NSMutableArray<HomePageModel> array];
        [arrayStudy addObject:[HomePageModel SafeKnowledge]];//安全小知識
        [arrayStudy addObject:[HomePageModel Study]];//學習培訓
        HomePageGroup *groupStudy = [HomePageGroup addGroupWithName:@"Home_Study" Array:arrayStudy];
        
        [menuArray addObjectsFromArray:@[groupDayWork, groupCommon, groupStudy]];
        
    }else if (role == UserRole_ProManage){
        //物業管理
        NSMutableArray<HomePageModel> *arrayDayWork = [NSMutableArray<HomePageModel> array];
        [arrayDayWork addObject:[HomePageModel Patrol]];//安保巡邏
        [arrayDayWork addObject:[HomePageModel AlarmUpload]];//警情上報
        [arrayDayWork addObject:[HomePageModel AlarmAssist]];//協查協辦
        HomePageGroup *groupDayWork = [HomePageGroup addGroupWithName:@"Home_DayWork" Array:arrayDayWork];
        
        NSMutableArray<HomePageModel> *arrayCommon = [NSMutableArray<HomePageModel> array];
        [arrayCommon addObject:[HomePageModel ClockIn]];//簽到打卡
        [arrayCommon addObject:[HomePageModel News]];//新聞資訊
        [arrayCommon addObject:[HomePageModel StaffManage]];//人員管理
        HomePageGroup *groupCommon = [HomePageGroup addGroupWithName:@"Home_Common" Array:arrayCommon];
        
        NSMutableArray<HomePageModel> *arrayInfo = [NSMutableArray<HomePageModel> array];
        [arrayInfo addObject:[HomePageModel InfoSearch]];//信息搜索
        [arrayInfo addObject:[HomePageModel InfoDistribute]];//信息發布
        HomePageGroup *groupInfo = [HomePageGroup addGroupWithName:@"Home_Info" Array:arrayInfo];
        
        NSMutableArray<HomePageModel> *arrayStudy = [NSMutableArray<HomePageModel> array];
        [arrayStudy addObject:[HomePageModel SafeKnowledge]];//安全小知識
        [arrayStudy addObject:[HomePageModel Study]];//學習培訓
        HomePageGroup *groupStudy = [HomePageGroup addGroupWithName:@"Home_Study" Array:arrayStudy];
        
        [menuArray addObjectsFromArray:@[groupDayWork, groupCommon, groupInfo, groupStudy]];
        
    }else if (role == UserRole_Police){
        //民警
        NSMutableArray<HomePageModel> *arrayDayWork = [NSMutableArray<HomePageModel> array];
        [arrayDayWork addObject:[HomePageModel PatrolCheck]];//督查巡防
        [arrayDayWork addObject:[HomePageModel AlarmAccept]];//警情受理
        [arrayDayWork addObject:[HomePageModel AlarmDistribute]];//協查派發
        HomePageGroup *groupDayWork = [HomePageGroup addGroupWithName:@"Home_DayWork" Array:arrayDayWork];
        
        NSMutableArray<HomePageModel> *arrayCommon = [NSMutableArray<HomePageModel> array];
        [arrayCommon addObject:[HomePageModel ClockIn]];//簽到打卡
        [arrayCommon addObject:[HomePageModel News]];//新聞資訊
        [arrayCommon addObject:[HomePageModel VolunteerCheck]];//志愿者審核
        HomePageGroup *groupCommon = [HomePageGroup addGroupWithName:@"Home_Common" Array:arrayCommon];
        
        NSMutableArray<HomePageModel> *arrayInfo = [NSMutableArray<HomePageModel> array];
        [arrayInfo addObject:[HomePageModel InfoSearch]];//信息搜索
        [arrayInfo addObject:[HomePageModel InfoDistribute]];//信息發布
        HomePageGroup *groupInfo = [HomePageGroup addGroupWithName:@"Home_Info" Array:arrayInfo];
        
        [menuArray addObjectsFromArray:@[groupDayWork, groupCommon, groupInfo]];
        
    }else if (role == UserRole_PoliceManage){
        //局/政法委領導
        NSMutableArray<HomePageModel> *arrayCommon = [NSMutableArray<HomePageModel> array];
        [arrayCommon addObject:[HomePageModel News]];//新聞資訊
        HomePageGroup *groupCommon = [HomePageGroup addGroupWithName:@"Home_Common" Array:arrayCommon];
        
        NSMutableArray<HomePageModel> *arrayInfo = [NSMutableArray<HomePageModel> array];
        [arrayInfo addObject:[HomePageModel InfoSearch]];//信息搜索
        [arrayInfo addObject:[HomePageModel InfoDistribute]];//信息發布
        HomePageGroup *groupInfo = [HomePageGroup addGroupWithName:@"Home_Info" Array:arrayInfo];
        
        [menuArray addObjectsFromArray:@[groupCommon, groupInfo]];
    }
    
    
    
    return menuArray;
}

@end

主頁

- (void)initData{
    self.dataSource = [[NSMutableArray alloc] init];
    //獲取角色菜單
    self.dataSource = [HomePageMenu MenuWithRole:self.userRole];
}

//Delegata
#pragma collectionView Delegate
//返回分區個數
- (NSInteger) numberOfSectionsInCollectionView:(UICollectionView *)collectionView{

    //return 3;
    
    return self.dataSource.count;
}

//返回每個分區的item個數
- (NSInteger) collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
    
    HomePageGroup *group = self.dataSource[section];
    return group.array.count;
    
    //return 3;
}

//返回每個item
- (UICollectionViewCell *) collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
    //    ShopManageCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"ShopManageCell" forIndexPath:indexPath];
    
    ShopManageCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"cell" forIndexPath:indexPath];
    
    HomePageGroup *group = self.dataSource[indexPath.section];
    HomePageModel *model = group.array[indexPath.row];
    
    [cell.icon setImage:model.image];
    [cell.title setText:model.name];
    
    return cell;
}

- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView
           viewForSupplementaryElementOfKind:(NSString *)kind
                                 atIndexPath:(NSIndexPath *)indexPath {
    
    UICollectionReusableView *reuseablebiew = nil;
    
    if ([kind isEqualToString:@"UICollectionElementKindSectionHeader"]) {
        //這是頭視圖
        [self.collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:[NSString stringWithFormat:@"headview %@",indexPath]];
        UICollectionReusableView *headeview = [collectionView dequeueReusableSupplementaryViewOfKind:kind withReuseIdentifier:[NSString stringWithFormat:@"headview %@",indexPath] forIndexPath:indexPath];
        
        //添加Label
        UILabel *headerLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 0, SCREEN_WIDTH - 80, 30)];
        headerLabel.font = [UIFont systemFontOfSize:17 weight:UIFontWeightSemibold];
        headerLabel.textColor = UIColorFromHex(0x4D4D4D);
        //添加邊緣修飾圖
        UIImageView *borderView = [[UIImageView alloc] initWithFrame:CGRectMake(8, 6, 2, 16)];
        [borderView setImage:[UIImage imageNamed:@"icon_decorate_blue"]];
        
        HomePageGroup *group = self.dataSource[indexPath.section];
        if (group.name) {
            headerLabel.text = group.name;
        }
        [headeview addSubview:borderView];
        [headeview addSubview:headerLabel];
        
        reuseablebiew = headeview;
    }
    return reuseablebiew;
    
}

//點擊事件
- (void) collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
    [self.navigationController setNavigationBarHidden:YES];

    HomePageGroup *group = self.dataSource[indexPath.section];
    HomePageModel *model = group.array[indexPath.row];
    
    switch (model.code) {
        case HomePage_Patrol:
            [self.navigationController pushViewController:[[PatrolViewController alloc] init] animated:NO];
            break;
            
        case HomePage_PatrolChck:
            [self.navigationController pushViewController:[[PatrolManageViewController alloc] init] animated:NO];
            break;
            
        default:
            [self.navigationController pushViewController:[[WaitViewController alloc] initWithTitle:@"敬請期待"] animated:NO];
            break;
    }
}

這樣就可以了，主頁的代碼看起來簡單多了。其它的工作都放到菜單的配置項里面。可讀性也更好了。

三个男躁一个女,国精产品一区一手机的秘密,麦子交换系列最经典十句话,欧美国产综合欧美视频

對首頁（九宮格形態）的一個小小優化

對首頁（九宮格形態）的一個小小優化

三个男躁一个女,国精产品一区一手机的秘密,麦子交换系列最经典十句话,欧美 国产 综合 欧美 视频

對首頁（九宮格形態）的一個小小優化

三个男躁一个女,国精产品一区一手机的秘密,麦子交换系列最经典十句话,欧美国产综合欧美视频