//  ViewController.h//  03-综合使用#import <UIKit/UIKit.h>@interface ViewController : UIViewController@end

//  ViewController.m//  03-综合使用#import "ViewController.h"#import "XMGShop.h"#import "XMGShopView.h"@interface ViewController ()/** 存放所有商品的整体 */@property (weak, nonatomic) IBOutlet UIView *shopsView;/** HUD */@property (weak, nonatomic) IBOutlet UILabel *hud;// 文档注释/** 添加按钮 */@property (weak, nonatomic) UIButton *addBtn;/** 删除按钮 */@property (weak, nonatomic) UIButton *removeBtn;/** 全部商品数据 */@property (strong, nonatomic) NSArray *shops;@end@implementation ViewController// 加载plist数据（比较大）// 懒加载：用到时再去加载，而且也只加载一次- (NSArray *)shops{    if (_shops == nil) {        // 加载一个字典数组        NSArray *dictArray = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"shops" ofType:@"plist"]];                NSMutableArray *shopArray = [NSMutableArray array];        for (NSDictionary *dict in dictArray) {            XMGShop *shop = [XMGShop shopWithDict:dict];            [shopArray addObject:shop];        }        _shops = shopArray;    }    return _shops;}- (void)viewDidLoad{    [super viewDidLoad];        self.shopsView.clipsToBounds = YES;          // 添加“添加按钮”    self.addBtn = [self addButtonWithImage:@"add" highImage:@"add_highlighted" disableImage:@"add_disabled" frame:CGRectMake(30, 30, 50, 50) action:@selector(add)];        // 添加“删除按钮”    self.removeBtn = [self addButtonWithImage:@"remove" highImage:@"remove_highlighted" disableImage:@"remove_disabled" frame:CGRectMake(270, 30, 50, 50) action:@selector(remove)];    self.removeBtn.enabled = NO;        // 加载xib文件    // Test.xib --编译--> Test.nib    // 方式1//    NSArray *objs = [[NSBundle mainBundle] loadNibNamed:@"Test" owner:nil options:nil];//    [self.view addSubview:objs[1]];        // 方式2    // 一个UINib对象就代表一个xib文件//    UINib *nib = [UINib nibWithNibName:@"Test" bundle:[NSBundle mainBundle]];    // 一般情况下，bundle参数传nil，默认就是mainBundle//    UINib *nib = [UINib nibWithNibName:@"Test" bundle:nil];//    NSArray *objs = [nib instantiateWithOwner:nil options:nil];//    [self.view addSubview:[objs lastObject]];}#pragma mark 添加按钮- (UIButton *)addButtonWithImage:(NSString *)image highImage:(NSString *)highImage disableImage:(NSString *)disableImage frame:(CGRect)frame action:(SEL)action{    // 创建按钮    UIButton *btn = [[UIButton alloc] init];    // 设置背景图片    [btn setBackgroundImage:[UIImage imageNamed:image] forState:UIControlStateNormal];    [btn setBackgroundImage:[UIImage imageNamed:highImage] forState:UIControlStateHighlighted];    [btn setBackgroundImage:[UIImage imageNamed:disableImage] forState:UIControlStateDisabled];    // 设置位置和尺寸    btn.frame = frame;    // 监听按钮点击    [btn addTarget:self action:action forControlEvents:UIControlEventTouchUpInside];    // 添加按钮    [self.view addSubview:btn];    return btn;}#pragma mark 添加- (void)add{    // 每一个商品的尺寸    CGFloat shopW = 80;    CGFloat shopH = 90;        // 一行的列数    int cols = 3;        // 每一列之间的间距    CGFloat colMargin = (self.shopsView.frame.size.width - cols * shopW) / (cols - 1);    // 每一行之间的间距    CGFloat rowMargin = 10;        // 商品的索引    NSUInteger index = self.shopsView.subviews.count;        // 创建一个父控件（整体：存放图片和文字）    XMGShopView *shopView = [XMGShopView shopView];        shopView.shop = self.shops[index];        // 商品的x值    NSUInteger col = index % cols;    CGFloat shopX = col * (shopW + colMargin);        // 商品的y值    NSUInteger row = index / cols;    CGFloat shopY = row * (shopH + rowMargin);        shopView.frame = CGRectMake(shopX, shopY, shopW, shopH);        // 添加控件    [self.shopsView addSubview:shopView];        // 控制按钮的可用性    [self checkState];}#pragma mark 删除- (void)remove{    [[self.shopsView.subviews lastObject] removeFromSuperview];        // 控制按钮的可用性    [self checkState];}#pragma mark 检查状态：按钮状态- (void)checkState{    // 删除按钮什么时候可以点击：商品个数 > 0    self.removeBtn.enabled = (self.shopsView.subviews.count > 0);    // 添加按钮什么时候可以点击：商品个数 < 总数    self.addBtn.enabled = (self.shopsView.subviews.count < self.shops.count);        // 显示HUD    NSString *text = nil;    if (self.removeBtn.enabled == NO) { // 删光了        text = @"已经全部删除";    } else if (self.addBtn.enabled == NO) { // 加满了        text = @"已经添加满了";    }    if (text == nil) return;        self.hud.text = text;    self.hud.alpha = 1.0;    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{        self.hud.alpha = 0.0;    });}@end

//  XMGShopView.h//  03-综合使用#import <UIKit/UIKit.h>@class XMGShop;@interface XMGShopView : UIButton/** 模型数据 */@property (nonatomic, strong) XMGShop *shop;+ (instancetype)shopView;+ (instancetype)shopViewWithShop:(XMGShop *)shop;@end

//  XMGShopView.m//  03-综合使用#import "XMGShopView.h"#import "XMGShop.h"@interface XMGShopView()@end@implementation XMGShopView+ (instancetype)shopView{    return [self shopViewWithShop:nil];}+ (instancetype)shopViewWithShop:(XMGShop *)shop{    XMGShopView *shopView = [[self alloc] init];    shopView.backgroundColor = [UIColor redColor];    shopView.shop = shop;    return shopView;}- (instancetype)initWithFrame:(CGRect)frame{    if (self = [super initWithFrame:frame]) {        self.titleLabel.textAlignment = NSTextAlignmentCenter;        self.titleLabel.font = [UIFont systemFontOfSize:11];    }    return self;}- (void)setShop:(XMGShop *)shop{    _shop = shop;        // 设置子控件的数据    if (shop.icon) {        [self setImage:[UIImage imageNamed:shop.icon] forState:UIControlStateNormal];    }        [self setTitle:shop.name forState:UIControlStateNormal];        // 不要直接拿出按钮内部的子控件，来修改文字、图片属性//    self.titleLabel.text = shop.name;//    self.imageView.image = [UIImage imageNamed:@"shop.icon"];}//- (CGRect)imageRectForContentRect:(CGRect)contentRect//{//    return CGRectMake(0, 0, contentRect.size.width, contentRect.size.height);//}////- (CGRect)titleRectForContentRect:(CGRect)contentRect//{//    return CGRectMake(0, 30, 70, 30);//}- (void)layoutSubviews{    [super layoutSubviews];        CGFloat buttonW = self.frame.size.width;    CGFloat buttonH = self.frame.size.height;        CGFloat imageH = buttonW - 10;    self.imageView.frame = CGRectMake(0, 0, buttonW, imageH);        self.titleLabel.frame = CGRectMake(0, imageH, buttonW, buttonH - imageH);}@end

//  XMGShop.h//  03-综合使用#import <Foundation/Foundation.h>@interface XMGShop : NSObject/** 商品名称 */@property (nonatomic, strong) NSString *name;/** 图标 */@property (nonatomic, strong) NSString *icon;- (instancetype)initWithDict:(NSDictionary *)dict;+ (instancetype)shopWithDict:(NSDictionary *)dict;@end

//  XMGShop.m//  03-综合使用#import "XMGShop.h"@implementation XMGShop- (instancetype)initWithDict:(NSDictionary *)dict{    if (self = [super init]) {//        self.name = dict[@"name"];//        self.icon = dict[@"icon"];        [self setValuesForKeysWithDictionary:dict];    }    return self;}+ (instancetype)shopWithDict:(NSDictionary *)dict{    return [[self alloc] initWithDict:dict];}@end