//
// XMGViewController.m,控制器类
#import "XMGViewController.h"
#import "XMGShop.h"
@interface XMGViewController ()
// 购物车
@property (weak, nonatomic) IBOutlet UIView *shopCarView;
// 添加按钮
@property (weak, nonatomic) IBOutlet UIButton *addButton;
// 删除按钮
@property (weak, nonatomic) IBOutlet UIButton *removeButton;
/** 数据数组 */
@property (nonatomic, strong) NSArray *dataArr;
@end
@implementation XMGViewController
/**
* 懒加载
*/
- (NSArray *)dataArr{
if (_dataArr == nil) {
// 加载数据
// 1.获取全路径
NSString *dataPath = [[NSBundle mainBundle] pathForResource:@"shopData.plist" ofType:nil];//Supporting Files下面的shopData.plist文件。
self.dataArr = [NSArray arrayWithContentsOfFile:dataPath]; //dataPath = @"/Users/mctc/Library/Developer/CoreSimulator/Devices/4E7E6AB7-BB75-4C2C-9D87-21A0369A3DD6/data/Containers/Bundle/Application/A855282B-7D1A-450A-B3C3-8ACE93443577/03-综合练习.app/shopData.plist" 0x00007fafe150ef70
NSLog(@"%@",self.dataArr); //调用了get方法。
/*(
{
icon = danjianbao;
name = "\U5355\U5305";
},
{
icon = qianbao;
name = "\U94b1\U5305";
})*/
// 字典转模型对象
// 创建临时数组
NSMutableArray *tempArray = [NSMutableArray array];
for (NSDictionary *dict in _dataArr) {
// 创建shop对象
/*
// XMGShop *shop = [[XMGShop alloc] initWithIcon:dict[@"icon"] name:dict[@"name"]];
// XMGShop *shop = [XMGShop shopWithIcon:dict[@"icon"] name:dict[@"name"]];
// shop.name = dict[@"name"];
// shop.icon = dict[@"icon"];
*/
XMGShop *shop = [XMGShop shopWithDict:dict];
// 把模型装入数组
[tempArray addObject:shop];
}
self.dataArr = tempArray;
}
return _dataArr;
}
// 初始化数据
- (void)viewDidLoad {
[super viewDidLoad];
/*类前缀
// Foundation
NSString;
NSArray;
NSDictionary;
NSURL;
// UIKit
UIView;
UIImageView;
UISwitch;
*/
}
/**
* 添加到购物车
*
* @param button 按钮
*/
- (IBAction)add:(UIButton *)button {
/***********************1.定义一些常量*****************************/
// 1.总列数
NSInteger allCols = ;
// 2.商品的宽度 和 高度
CGFloat width = ;
CGFloat height = ;
// 3.求出水平间距 和 垂直间距
CGFloat hMargin = (self.shopCarView.frame.size.width - allCols * width) / (allCols -);
CGFloat vMargin = (self.shopCarView.frame.size.height - * height) / ;
// 4. 设置索引
NSInteger index = self.shopCarView.subviews.count;
// 5.求出x值
CGFloat x = (hMargin + width) * (index % allCols);
CGFloat y = (vMargin + height) * (index / allCols);
/***********************2.创建一个商品*****************************/
// 1.创建商品的view
UIView *shopView = [[UIView alloc] init];
// 2.设置frame
shopView.frame = CGRectMake(x, y, width, height);
// 3.设置背景颜色
shopView.backgroundColor = [UIColor greenColor];
// 4.添加到购物车
[self.shopCarView addSubview:shopView];
// 5.创建商品的UIImageView对象
UIImageView *iconView = [[UIImageView alloc] init];
iconView.frame = CGRectMake(, , width, width);
iconView.backgroundColor = [UIColor blueColor];
[shopView addSubview:iconView];
// 6.创建商品标题对象
UILabel *titleLabel = [[UILabel alloc] init];
titleLabel.frame = CGRectMake(, width, width, height - width);
titleLabel.backgroundColor = [UIColor yellowColor];
titleLabel.textAlignment = NSTextAlignmentCenter; // 居中
[shopView addSubview:titleLabel];
/***********************3.设置数据*****************************/
// 设置数据
XMGShop *shop = self.dataArr[index];
iconView.image = [UIImage imageNamed:shop.icon];
titleLabel.text = shop.name;
/***********************4.设置按钮的状态*****************************/
button.enabled = (index != );
// 5.设置删除按钮的状态
self.removeButton.enabled = YES;
}
/**
* 从购物车中删除
*
* @param button 按钮
*/
- (IBAction)remove:(UIButton *)button {
// 1. 删除最后一个商品
UIView *lastShopView = [self.shopCarView.subviews lastObject];
[lastShopView removeFromSuperview];
// 3. 设置添加按钮的状态
self.addButton.enabled = YES;
// 4. 设置删除按钮的状态
/*
if (self.shopCarView.subviews.count == 0) {
self.removeButton.enabled = NO;
}
*/
self.removeButton.enabled = (self.shopCarView.subviews.count != );
}
@end
//
// XMGShop.h
#import <Foundation/Foundation.h>
@interface XMGShop : NSObject
/** 图片的名称 */
@property (nonatomic, copy) NSString *icon;
/** 商品的名称 */
@property (nonatomic, copy) NSString *name;
// 提供构造方法
/*
- (instancetype)initWithIcon: (NSString *)icon name: (NSString *)name;
+ (instancetype)shopWithIcon: (NSString *)icon name: (NSString *)name;
*/
- (instancetype)initWithDict:(NSDictionary *)dict;
+ (instancetype)shopWithDict:(NSDictionary *)dict;
@end
//
// XMGShop.m
#import "XMGShop.h"
@implementation XMGShop
/*
- (instancetype)initWithIcon:(NSString *)icon name:(NSString *)name{
if (self = [super init]) {
self.icon = icon;
self.name = name;
}
return self;
}
+ (instancetype)shopWithIcon:(NSString *)icon name:(NSString *)name{
return [[self alloc] initWithIcon:icon name:name];
}
*/
/*构造方法，一般一共对象方法和类方法*/
- (instancetype)initWithDict:(NSDictionary *)dict{
if (self = [super init]) {
self.icon = dict[@"icon"];
self.name = dict[@"name"];
}
return self;
}
+ (instancetype)shopWithDict:(NSDictionary *)dict{
return [[self alloc] initWithDict:dict];//self alloc创建了一个类对象。
}
@end