iPad学做菜

项目描述：家常菜、川菜 、鲁菜、东北菜、甜品等各大菜系应有尽有，详细的制作步骤，再也不用为自己不会做饭而烦恼。

主要技术：主界面采用UISplitViewController的结构设计；自定义各大菜系的菜品展示界面cell;分别实现了用通知和代理传值；使用SDWebImage异步下载菜品图片并进行内存和硬盘缓存；使用WebView加载html菜品详细制作步骤；iPad 和 iPhone 的适配。

#import "MasterController.h"

#import "NSObject+CZ.h"

#import "CZFoodType.h"

#import "CZDetailController.h"

@interface CZMasterController ()

@property (nonatomic ,strong) NSArray *foodTypes;

@property (nonatomic ,strong) CZFoodType *foodType;

@property (nonatomic ,strong) NSIndexPath  *indexPath;

@end

@implementation CZMasterController

- (NSArray *)foodTypes

{

    if (_foodTypes == nil) {

        

        

        _foodTypes = [CZFoodType  objcWithFileName:@"food_types.plist"];

        

    }

    return _foodTypes;

}

//1.加载了数据

- (void)viewDidLoad {

    [super viewDidLoad];

    

    

    //设置初始值

    

    self.foodType = self.foodTypes[0];

    

    self.title = @"菜系";

}

- (void)viewWillAppear:(BOOL)animated

{

    [super viewWillAppear:animated];

    

    

    

    //先进行设备判断

    

    if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {//ipad

        

        //选中当前显现的这一行

        

        

        if (self.indexPath == nil) {

            

            self.indexPath = [NSIndexPath indexPathForRow:0 inSection:0];

            

            //默认选中第一行

            [self.tableView selectRowAtIndexPath:self.indexPath animated:YES scrollPosition:UITableViewScrollPositionNone];

            

        }else{

            

            [self.tableView selectRowAtIndexPath:self.indexPath animated:YES scrollPosition:UITableViewScrollPositionNone];

        }

        

    }

    

    

    

}

#pragma mark - Table view data source

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

#warning Incomplete implementation, return the number of rows

    return self.foodTypes.count;

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    

    

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"foodType"];

    

    if (cell == nil) {

        

        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"foodType"];

    }

    

    CZFoodType *foodType = self.foodTypes[indexPath.row];

    

    cell.textLabel.text = foodType.name;

    cell.textLabel.textColor = [UIColor blueColor];

    cell.textLabel.textAlignment = NSTextAlignmentCenter;

    

    return cell;

}

//进行传值

//通知

//代理 两者存在关系  两者同时存在的地方  一者为另一者得代理

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

  //获取当前模型

    CZFoodType *foodType = self.foodTypes[indexPath.row];

    

    

    

    //先进行设备判断

    

    if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {//ipad

        

        //先判断是否为同一个模型

        

        if (foodType == self.foodType) {

            

            return;

        }

        

        //通知传值

        //    [[NSNotificationCenter defaultCenter] postNotificationName:@"changeFoods" object:

        //     foodType];

        

        

        //代理传值

        

        if ([self.delegate respondsToSelector:@selector(masterController:andFoodType:)]) {

            

            [self.delegate masterController:self andFoodType:foodType];

        }

        

        //赋值

        

        self.foodType = foodType;

        

        self.indexPath = indexPath;

    }

    //////iphone

    if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone) {//iphone

      

        

        CZDetailController *vc = [[CZDetailController alloc]init];

        

        vc.foodType = foodType;

        

        [self.navigationController pushViewController:vc animated:YES];

        

}

    NSLog(@"12345678");

}

@end

#import "DetailController.h"

#import "NSObject+CZ.h"

#import "Food.h"

#import "UIImageView+WebCache.h" 

#import "CZCell.h"

#import "FoodType.h"

#import "MasterController.h"

#import "ComposeController.h"

@interface DetailController ()<MasterControllerDelegate,UISplitViewControllerDelegate>

@property (nonatomic ,strong) NSArray *foods;

@end

@implementation DetailController

//懒加载

- (NSArray *)foods

{

    if (_foods == nil) {

        

        _foods = [CZFood  objcWithFileName:@"type_1_foods.plist"];

    }

    return _foods;

}

- (void)viewDidLoad {

    [super viewDidLoad];

    

    //设置行高

    self.tableView.rowHeight = 100;

    

    //添加通知

    

    [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(changeFoods:) name:@"changeFoods" object:nil];

    

    //设置标题

    

    self.title = @"家常菜";

    

    

    //自动调用代理方法

    [self splitViewController:self.splitViewController willChangeToDisplayMode:self.splitViewController.displayMode];

}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

#warning Incomplete implementation, return the number of rows

    return self.foods.count;

}

//存在问题:图片变大

//解决方法  自定义 cell

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    

    

    

    CZCell *cell = [CZCell cellWithTableView:tableView];

    

    Food *food = self.foods[indexPath.row];

    

    cell.food = food;

    

    UIView *view1 = [[UIView alloc]init];

    view1.backgroundColor = [UIColor greenColor];

    cell.selectedBackgroundView = view1;

    

    return cell;

}

//接收到通知会来到此方法

- (void)changeFoods:(NSNotification *)not

{

    NSLog(@"%@",not);

    

    CZFoodType *foodType = not.object;

    

    //加载对应的 plist  字典转模型  放在数组里面

    

    NSString *path = [NSString stringWithFormat:@"type_%@_foods.plist",foodType.idstr];

    

    _foods = [CZFood objcWithFileName:path];

    

    

    //设置标题

    

    self.title = foodType.name;

    

    //刷新列表

    

    [self.tableView reloadData];

    

    

    //自动滚到第一行

    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];

    [self.tableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionTop animated:NO];

}

#pragma mark   CZMasterControllerDelegate

- (void)masterController:(CZMasterController *)vc andFoodType:(CZFoodType *)foodType

{

    //加载对应的 plist  字典转模型  放在数组里面

    

    NSString *path = [NSString stringWithFormat:@"type_%@_foods.plist",foodType.idstr];

    

    _foods = [CZFood objcWithFileName:path];

    

    //设置标题

    

    self.title = foodType.name;

    

    //刷新列表

    

    [self.tableView reloadData];

    

    

    //自动滚到第一行

    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];

    [self.tableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionTop animated:NO];

}

//#pragma mark UISplitViewControllerDlegate

- (void)splitViewController:(UISplitViewController *)svc willChangeToDisplayMode:(UISplitViewControllerDisplayMode)displayMode

{

    //判断当前的显示样式

    /*

     UISplitViewControllerDisplayModeAutomatic,

     UISplitViewControllerDisplayModePrimaryHidden,

     UISplitViewControllerDisplayModeAllVisible,

     UISplitViewControllerDisplayModePrimaryOverlay,

     */

    if (displayMode == UISplitViewControllerDisplayModePrimaryHidden ) {//主要的隐藏

        

//        svc.displayModeButtonItem.title = @"菜系";

        self.navigationItem.leftBarButtonItem = svc.displayModeButtonItem;

    }

    

    if (displayMode == UISplitViewControllerDisplayModeAllVisible) {//全部显示

        self.navigationItem.leftBarButtonItem = nil;

    }

}

//- (void)splitViewController:(UISplitViewController *)svc willHideViewController:(UIViewController *)aViewController withBarButtonItem:(UIBarButtonItem *)barButtonItem forPopoverController:(UIPopoverController *)pc

//{

//    

//    barButtonItem.title = @"菜系";

//

//    self.navigationItem.leftBarButtonItem = barButtonItem;

//}

//

//- (void)splitViewController:(UISplitViewController *)svc willShowViewController:(UIViewController *)aViewController invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem{

//

//

//    

//    self.navigationItem.leftBarButtonItem = nil;

//}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

    

    //0.获取 cell 对应的模型

    

    Food *food = self.foods[indexPath.row];

    //1.创建 vc

    ComposeController *vc = [[ComposeController alloc]init];

    

    UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:vc];

    

       //3.传值

    

    vc.food = food;

    

    

    //2.展示 vc

    vc.view.backgroundColor = [UIColor greenColor];

//    [self.navigationController pushViewController:vc animated:YES];

    

    

     nav.modalPresentationStyle = UIModalPresentationFormSheet;

    [self presentViewController:nav animated:YES completion:nil];

}

//重写 set方法

- (void)setFoodType:(FoodType *)foodType

{

    _foodType = foodType;

    

    //加载对应的 plist  字典转模型  放在数组里面

    

    NSString *path = [NSString stringWithFormat:@"type_%@_foods.plist",foodType.idstr];

    

    _foods = [Food objcWithFileName:path];

    

    

    //设置标题

    

    self.title = foodType.name;

    

    //刷新列表

    

    [self.tableView reloadData];

}

@end

#import "ComposeController.h"

#import "Food.h"

@interface ComposeController ()

@property (nonatomic ,weak)  UIWebView *webView ;

@end

@implementation ComposeController

- (void)loadView

{

    UIWebView *webView = [[UIWebView alloc]init];

    

    self.view = webView;

    

    self.webView = webView;

}

- (void)viewDidLoad {

    [super viewDidLoad];

    

    

    //添加 item

    

    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]initWithTitle:@"back" style:UIBarButtonItemStylePlain target:self action:@selector(back)];

    

    //拼接路径

    

    NSString *name = [NSString stringWithFormat:@"Html/food/%@.html",self.food.idstr];

    

    NSString *path = [[NSBundle mainBundle] pathForResource:name ofType:nil];

    

    //加载

    

    NSURL *url = [NSURL fileURLWithPath:path];

    NSURLRequest *request = [[NSURLRequest alloc]initWithURL:url];

    [self.webView loadRequest:request];

}

//- (void)setFood:(CZFood *)food

//{

//    _food = food;

//    

//    NSString *name = [NSString stringWithFormat:@"%@.html",self.food.idstr];

//    

//    NSString *path = [[NSBundle mainBundle] pathForResource:name ofType:nil];

//    

//    //加载

//    

//    NSURL *url = [NSURL fileURLWithPath:path];

//    NSURLRequest *request = [[NSURLRequest alloc]initWithURL:url];

//    [self.webView loadRequest:request];

//

//

//}

 - (void)back

{

    [self dismissViewControllerAnimated:YES completion:nil];

}

@end

- (void)viewDidLoad {

    [super viewDidLoad];

    

    //获取自控制器

    

    UINavigationController *nav1 = self.childViewControllers[0];

    

    MasterController *masterVc = nav1.childViewControllers[0];

    

    

    UINavigationController *nav2 = self.childViewControllers[1];

    DetailController *detailVc = nav2.childViewControllers[0];

    

    masterVc.delegate = detailVc;

    

    self.delegate = detailVc;

    

    

}

@end