iOS学习 - tableViewCell（团购）

Model
//
//  YJTg.h
//  01-tableViewCell-团购
//
//  Created by JACKY-MAC on 15-6-29.
//  Copyright (c) 2015年 www.train.com. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface YJTg : NSObject
@property(nonatomic,copy)NSString *icon;
@property(nonatomic,copy)NSString *price;
@property(nonatomic,copy)NSString *title;
@property(nonatomic,copy)NSString *buyCount;

- (instancetype)initWithDict:(NSDictionary *)dict;
+(instancetype)tgWithDict:(NSDictionary *)dict;

+ (NSMutableArray *)tgs;
@end


//
//  YJTg.m
//  01-tableViewCell-团购
//
//  Created by JACKY-MAC on 15-6-29.
//  Copyright (c) 2015年 www.train.com. All rights reserved.
//

#import "YJTg.h"

@implementation YJTg
- (instancetype)initWithDict:(NSDictionary *)dict
{
    self = [super init];
    if (self) {
        [self setValuesForKeysWithDictionary:dict];
    }
    return self;
}
+(instancetype)tgWithDict:(NSDictionary *)dict
{
    return [[self alloc]initWithDict:dict];
}

+ (NSMutableArray *)tgs
{
    NSArray *array = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"tgs.plist" ofType:nil]];
    
    NSMutableArray *arrayM = [NSMutableArray array];
    for (NSDictionary *dict in array) {
        [arrayM addObject:[self tgWithDict:dict]];
    }
    return arrayM;
}
@end





View


//
//  YJTgCell.h
//  01-tableViewCell-团购
//
//  Created by JACKY-MAC on 15-6-29.
//  Copyright (c) 2015年 www.train.com. All rights reserved.
//

#import <UIKit/UIKit.h>
@class YJTg;
@interface YJTgCell : UITableViewCell
/** 团购的数据模型 */
@property(nonatomic,strong)YJTg *tg;

/** 提供一个类方法，可以快速创建 Cell */
+ (instancetype)cellWithTableView:(UITableView *)tableView;
@end


//
//  YJTgCell.m
//  01-tableViewCell-团购
//
//  Created by JACKY-MAC on 15-6-29.
//  Copyright (c) 2015年 www.train.com. All rights reserved.
//

#import "YJTgCell.h"
#import "YJTg.h"
@interface YJTgCell()
@property (weak, nonatomic) IBOutlet UIImageView *iconView;
@property (weak, nonatomic) IBOutlet UILabel *titleLabel;
@property (weak, nonatomic) IBOutlet UILabel *priceLabel;
@property (weak, nonatomic) IBOutlet UILabel *buyCountLabel;
@end
@implementation YJTgCell
+ (instancetype)cellWithTableView:(UITableView *)tableView
{
    // 1. 可重用标示符
    static NSString *ID = @"ID";
    
    // 2. tableView查询可重用Cell
    YJTgCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];
    
    // 3. 如果没有可重用cell
    if (cell ==nil) {
        cell = [[[NSBundle mainBundle] loadNibNamed:@"YJTgCell" owner:nil options:nil] lastObject];
    }
    return cell;
}
- (void)setTg:(YJTg *)tg
{
    // setter方法中，第一句要赋值，否则要在其他方法中使用模型，将无法访问到
    _tg = tg;
    
    
    self.titleLabel.text = tg.title;
    self.iconView.image = [UIImage imageNamed:tg.icon];
    self.priceLabel.text = tg.price;
    self.buyCountLabel.text = tg.buyCount;
}


#pragma mark - 模板提供的方法
/**
 初始化方法
 
 使用代码创建Cell的时候会被调用，如果使用XIB或者Storyboard，此方法不会被调用
 */

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        // Initialization code
    }
    return self;
}

/**
 从XIB被加载之后，会自动被调用，如果使用纯代码，不会被执行
 */
- (void)awakeFromNib
{

}

/**
 Cell 被选中或者取消选中是都会被调用
 
 如果是自定义Cell控件，所有的子控件都应该添加到contentView中
 */
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
    [super setSelected:selected animated:animated];

    // Configure the view for the selected state
}






//
//  YJTgFooterView.h
//  01-tableViewCell-团购
//
//  Created by JACKY-MAC on 15-6-29.
//  Copyright (c) 2015年 www.train.com. All rights reserved.
//

#import <UIKit/UIKit.h>
@class YJTgFooterView;
@protocol YJTgFooterViewDelegate <NSObject>

/** 视图的下载按钮被点击 */
- (void)tgFooterViewDidDownLoadButtonClick:(YJTgFooterView *)footerView;

@end
@interface YJTgFooterView : UIView
@property (nonatomic,weak)id <YJTgFooterViewDelegate>delegate;

+ (instancetype)footerView;

/** 刷新数据结束后，更新页脚的视图显示 */
- (void)endRefresh;

@end




//
//  YJTgFooterView.m
//  01-tableViewCell-团购
//
//  Created by JACKY-MAC on 15-6-29.
//  Copyright (c) 2015年 www.train.com. All rights reserved.
//

#import "YJTgFooterView.h"
@interface YJTgFooterView()
@property (weak, nonatomic) IBOutlet UIButton *loadMoreButton;
@property (weak, nonatomic) IBOutlet UIView *tipsView;

@end

@implementation YJTgFooterView
+ (instancetype)footerView
{
    return [[[NSBundle mainBundle] loadNibNamed:@"YJTgFooterView" owner:nil options:nil] lastObject];
}
- (IBAction)loadMore
{
        //NSLog(@"加载更多");
        // 1. 隐藏按钮
    self.loadMoreButton.hidden = YES;
    
        // 2. 显示提示视图
    self.tipsView.hidden = NO;
    
    // 延时执行命令，多线程GCD
   // 今后关于延时的操作，统一使用dispatch_after
    dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC));
    dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
        // 块代码中的代码会在1.0秒之后执行
        
        // 3. 加载数据(从网络服务器加载，需要时间...)
        // view是用来显示数据的，用代理来实现！
        // 代理是用来监听的，发生某些事情的时候，通知"代理"-》控制器去"工作"->加载数据
        
        // 3.1 判断代理是否实现了协议方法
        if ([self.delegate respondsToSelector:@selector(tgFooterViewDidDownLoadButtonClick:)])
        {
                [self.delegate tgFooterViewDidDownLoadButtonClick:self];
        }
    
        // 4. 加载完成数据
        self.loadMoreButton.hidden = NO;
        self.tipsView.hidden = YES;
        
    });

}

- (void)endRefresh
{
    
    // 4. 加载完成数据
    self.loadMoreButton.hidden = NO;
    self.tipsView.hidden = YES;
}




//
//  YJTgHeadView.h
//  01-tableViewCell-团购
//
//  Created by JACKY-MAC on 15-6-30.
//  Copyright (c) 2015年 www.train.com. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface YJTgHeadView : UIView
+ (instancetype)hesdView;
@end



//
//  YJTgHeadView.m
//  01-tableViewCell-团购
//
//  Created by JACKY-MAC on 15-6-30.
//  Copyright (c) 2015年 www.train.com. All rights reserved.
//

#import "YJTgHeadView.h"

#define kImageCount 5
@interface YJTgHeadView()<UIScrollViewDelegate>
@property (weak, nonatomic) IBOutlet UIScrollView *scrollView;

@property (weak, nonatomic) IBOutlet UIPageControl *pageControl;

@property(nonatomic,strong)NSTimer *timer;
@end

@implementation YJTgHeadView

+ (instancetype)hesdView;
{
    return [[[NSBundle mainBundle] loadNibNamed:@"YJTgHeadView" owner:nil options:nil] lastObject];
}
- (void)awakeFromNib
{
    // 1.添加图片
    CGFloat imageW = self.scrollView.frame.size.width;
    CGFloat imageH = self.scrollView.frame.size.height;
    CGFloat imageY = 0;
    for (int index = 0; index < kImageCount; index++) {
        CGFloat imageX = index * imageW;
        
        UIImageView *imageView = [[UIImageView alloc] init];
        imageView.frame = CGRectMake(imageX, imageY, imageW, imageH);
        imageView.image = [UIImage imageNamed:[NSString stringWithFormat:@"ad_%02d",index]];
        
        [self.scrollView addSubview:imageView];
    }
    // 2.设置内容尺寸
    
  self.scrollView.contentSize = CGSizeMake(imageW * kImageCount, 0);
    
    // 取消水平滚动条
      self.scrollView.showsVerticalScrollIndicator = NO;
      self.scrollView.showsHorizontalScrollIndicator = NO;
    
    // 取消弹簧效果
  self.scrollView.bounces = NO;
    
    // 设置代理
    self.scrollView.delegate = self;
    //是否分页
    self.scrollView.pagingEnabled = YES;
    
        // 3.分页
    self.pageControl.numberOfPages = kImageCount;
    
        // 4.定时器
    self.timer = [NSTimer timerWithTimeInterval:2.0 target:self selector:@selector(nextImage) userInfo:nil repeats:YES];
    [[NSRunLoop mainRunLoop] addTimer:self.timer forMode:NSRunLoopCommonModes];
  
}

- (void)nextImage
{
        // 1.下一页
    if (self.pageControl.currentPage == kImageCount - 1) {
        self.pageControl.currentPage = 0;
    }else{
        self.pageControl.currentPage++;
    }
    
    // 2.设置滚动
    CGPoint offset = CGPointMake(self.scrollView.frame.size.width * self.pageControl.currentPage, 0);
    [self.scrollView setContentOffset:offset animated:YES];
}

#pragma mark - 代理方法
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate
{
    self.timer = [NSTimer timerWithTimeInterval:2.0 target:self selector:@selector(nextImage) userInfo:nil repeats:YES];
    [[NSRunLoop mainRunLoop] addTimer:self.timer forMode:NSRunLoopCommonModes];
    

}

- (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView
{
    [self.timer invalidate];
    self.timer = nil;
}

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    if (self.timer) return;
    self.pageControl.currentPage = (scrollView.contentOffset.x + scrollView.frame.size.width * 0.5) / scrollView.frame.size.width;
}
@end




Controller

//
//  YJViewController.m
//  01-tableViewCell-团购
//
//  Created by JACKY-MAC on 15-6-29.
//  Copyright (c) 2015年 www.train.com. All rights reserved.
//

#import "YJViewController.h"
#import "YJTg.h"
#import "YJTgCell.h"
#import "YJTgFooterView.h"
#import "YJTgHeadView.h"

@interface YJViewController ()<YJTgFooterViewDelegate>
@property(nonatomic,strong)NSMutableArray *tgs;
@end

@implementation YJViewController

- (NSArray *)tgs
{
    if (_tgs == nil) {
        _tgs = [YJTg tgs];
    }
    return _tgs;
}
- (void)viewDidLoad
{
    [super viewDidLoad];
    
    self.tableView.rowHeight = 80;
    
    // 调整边距，可以让表格视图让开状态栏;
    self.tableView.contentInset = UIEdgeInsetsMake(20, 0, 0, 0);
    
      // 从XIB加载最后一个视图设置为footerView
   // self.tableView.tableFooterView = [[[NSBundle mainBundle] loadNibNamed:@"YJTgFooterView" owner:nil options:nil] lastObject];
    YJTgFooterView *footer = [YJTgFooterView footerView];
    footer.delegate = self;
    self.tableView.tableFooterView = footer;
    
    self.tableView.tableHeaderView = [YJTgHeadView hesdView];
}


#pragma mark - footView的代理方法
- (void)tgFooterViewDidDownLoadButtonClick:(YJTgFooterView *)footerView
{
    // 加载数据
    NSLog(@"努力加载数据中....");
  
    double delayInSeconds = 2.0;
    dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
    dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
        // 获得网络数据之后执行的操作
        
        // 向数组中添加数据，模拟网络加载完成,之后的效果
        NSDictionary *dict = @{@"title": @"哈哈",@"icon": @"ad_00",@"price": @"100.2",@"buyCount": @"250"};
        YJTg *tg = [YJTg tgWithDict:dict];
        
        [self.tgs addObject:tg];
        
        
        // 刷新数据
        //    [self.tableView reloadData];
        // 新建一个indexPath
        NSIndexPath *path = [NSIndexPath indexPathForRow:(self.tgs.count - 1) inSection:0];
        [self.tableView insertRowsAtIndexPaths:@[path] withRowAnimation:UITableViewRowAnimationMiddle];
        

    });
    }
#pragma mark - 数据源方法
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return self.tgs.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
 
        // 1. 创建cell
    YJTgCell *cell = [YJTgCell cellWithTableView:tableView];

    // 2> 通过数据模型，设置Cell内容，可以让视图控制器不需要了解cell内部的实现细节
    cell.tg = self.tgs[indexPath.row];

    
    return cell;
}

@end