开发笔记-商家展示界面

• 程序入口

////  LCBusinessTableViewController.m//  口碑页面////  Copyright © 2016年 LongChuang. All rights reserved.//#import "LCBusinessTableViewController.h"#import "LCBusinessData.h"#import "LCMyBusinessTableViewCell.h"@interface LCBusinessTableViewController ()@end@implementation LCBusinessTableViewController{    NSArray *_lcBusinessData;}- (void)viewDidLoad {    [super viewDidLoad];    _lcBusinessData = [self loadBusinessData];    // 清空分割线的内边距    self.tableView.separatorInset = UIEdgeInsetsZero;    // 添加头部广告    [self setupTableHeaderView];    // 添加尾巴    [self setupTableFooterView];}- (void)setupTableHeaderView {    UINib *nib = [UINib nibWithNibName:@"MyBusinessXib" bundle:nil];    UIView *headerView = [[nib instantiateWithOwner:nil options:nil] firstObject];    // xib的宽    CGFloat xibW = headerView.bounds.size.width;    // xib的高    CGFloat xibH = headerView.bounds.size.height;    // tableView的宽    CGFloat tableViewW = self.tableView.bounds.size.width;    // xib的高 3 * tableView的宽 4  / xib的宽 2 得到比率缩放之后的headerView的真实高度    CGFloat headerRealHeight = xibH * tableViewW / xibW;    headerView.frame = CGRectMake(0, 0, 0, headerRealHeight);    // 设置tableView的头部视图    self.tableView.tableHeaderView = headerView;}- (void)setupTableFooterView {    UIButton *loadMoreDataBtn = [[UIButton alloc] init];    [loadMoreDataBtn setTitle:@"加载更多" forState:UIControlStateNormal];    [loadMoreDataBtn setTitleColor:[UIColor darkGrayColor] forState:UIControlStateNormal];    [loadMoreDataBtn setTitleColor:[UIColor grayColor] forState:UIControlStateHighlighted];    loadMoreDataBtn.frame = CGRectMake(0, 0, 0, 30);    // 设置按钮中的字体颜色    loadMoreDataBtn.titleLabel.font = [UIFont systemFontOfSize:13];    //    loadMoreDataBtn.backgroundColor = [UIColor lightGrayColor];    // 设置灰度 如果想要白色就传1  如果想要纯黑传0    loadMoreDataBtn.backgroundColor = [UIColor colorWithWhite:0.9 alpha:1];    // 给按钮添加监听事件    [loadMoreDataBtn addTarget:self action:@selector(loadMoreDataBtnClick) forControlEvents:UIControlEventTouchUpInside];    // 设置tableView尾部视图    self.tableView.tableFooterView = loadMoreDataBtn;}- (void)loadMoreDataBtnClick {    // 创建控制器    UIViewController *test = [[UIViewController alloc] init];    test.view.backgroundColor = [UIColor yellowColor];    // 跳转到test控制器    [self.navigationController pushViewController:test animated:YES];}// 返回有多少行- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {    return _lcBusinessData.count;}// 每一组的每一行显示什么内容- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {    // 1.创建cell    LCMyBusinessTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"business" forIndexPath:indexPath];    // 2.设置cell内部子控件的数据    cell.lcBusinessdata = _lcBusinessData[indexPath.row];    // 3.返回cell    return cell;}-(NSArray *)loadBusinessData{    // 通过url读取字典数据    NSArray *arr = [NSArray arrayWithContentsOfURL:[[NSBundle mainBundle] URLForResource:@"business.plist" withExtension:nil]];    NSMutableArray *arrM = [NSMutableArray arrayWithCapacity:arr.count];    for (NSDictionary *dict in arr ) {        [arrM addObject:[LCBusinessData businessWithDict:dict]];    }    return arrM.copy;}// 返回每一组的头部标题- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {    return @"热门推荐";}@end

• 模型层,用于保存解析的数据

////  LCBusinessData.h//  口碑页面////  Copyright © 2016年 LongChuang. All rights reserved.//#import <Foundation/Foundation.h>#import "UIKit/UIkit.h"@interface LCBusinessData : NSObject//配图@property (nonatomic, copy) NSString *icon;// 店名@property (nonatomic, copy) NSString *name;// 优惠信息@property (nonatomic, copy) NSString *discount;// 人均消费@property (nonatomic, assign) CGFloat averagePrice;// 距离@property (nonatomic, assign) CGFloat distance;// 打折@property (nonatomic, assign) float offNum;// 评价@property (nonatomic, assign) CGFloat level;+(instancetype)businessWithDict:(NSDictionary *)dict;@end

• 模型层,解析数据的方法实现

////  LCBusinessData.m//  口碑页面////  Copyright © 2016年 LongChuang. All rights reserved.//#import "LCBusinessData.h"@implementation LCBusinessData+(instancetype)businessWithDict:(NSDictionary *)dict{    id obj = [[self alloc]init];    [obj setValuesForKeysWithDictionary:dict];    return obj;}@end

• 自定义视图中星级UIView的自定义声明和实现

////  LCLevelView.h//  外卖星级显示////  Copyright © 2016年 LongChuang. All rights reserved.//#import <UIKit/UIKit.h>/** *  应根据得到的数据自动生成不同图案的星星图片 */@interface LCLevelView : UIView// 对外预留接口,根据传入的数据,通过属性的set方法,自动识别该生成何种星星@property(nonatomic,assign)CGFloat level;@end

////  LCLevelView.m//  外卖星级显示////  Copyright © 2016年 LongChuang. All rights reserved.//#import "LCLevelView.h"@implementation LCLevelView-(void)setLevel:(CGFloat)level{    // 强转获取整数部分    NSInteger grade = (NSInteger)level;    // 根据整数部分生成全星图片    for (NSInteger i = 0; i < grade; i++) {        [self createStartImage:@"full_star" position:i];    }    // 判断是否需要生成半颗星图片    if (level - grade) {        [self createStartImage:@"half_star" position:grade++];    }    // 生成空的星星    for (NSInteger i = grade; i < 5; i++) {        [self createStartImage:@"empty_star" position:i];    }}-(void)createStartImage:(NSString *)imageName position:(NSInteger)position{    UIImageView *imageview = nil;    // 当星级评分发生变化时,无需重新创建,直接更改原来5张的图片名称即可,修改名称放到判断条件外    if (self.subviews.count == 5) {        imageview = self.subviews[position];    }else    {        // 设置坐标        imageview = [[UIImageView alloc]init];        CGRect startFrame = CGRectMake(0, 0, self.bounds.size.height, self.bounds.size.height);        imageview.frame = CGRectOffset(startFrame, position * self.bounds.size.height, 0);        // 创建出的图片空间添加到自定义UIView        [self addSubview:imageview];    }    // 无论是第几次创建,都需要更换图片    imageview.image = [UIImage imageNamed:imageName];}@end

• 自定义cell的声明和实现

////  LCMyBusinessTableViewCell.h//  口碑页面////  自定义cell的类//  Copyright © 2016年 LongChuang. All rights reserved.//#import <UIKit/UIKit.h>@class LCBusinessData;@interface LCMyBusinessTableViewCell : UITableViewCell// 定义模型数据,当接收数据的时候同过set方法设置模板上的数据@property(nonatomic,strong)LCBusinessData *lcBusinessdata;@end

////  LCMyBusinessTableViewCell.m//  口碑页面////  Created by Long on 16/8/11.//  Copyright © 2016年 LongChuang. All rights reserved.//#import "LCMyBusinessTableViewCell.h"#import "LCBusinessData.h"#import "LCLevelView.h"@class LCLevelView;@interface LCMyBusinessTableViewCell()// 配图@property (weak, nonatomic) IBOutlet UIImageView *iconView;// 店名@property (weak, nonatomic) IBOutlet UILabel *nameLabel;// 评分@property (weak, nonatomic) IBOutlet UILabel *levelLabel;// 人均消费@property (weak, nonatomic) IBOutlet UILabel *averagePriceLabel;// 打折@property (weak, nonatomic) IBOutlet UILabel *offNumLabel;// 距离@property (weak, nonatomic) IBOutlet UILabel *distanceLabel;// 优惠信息@property (weak, nonatomic) IBOutlet UILabel *discountLabel;// 减字label@property (weak, nonatomic) IBOutlet UILabel *jian;// 自定义星级@property(weak,nonatomic)IBOutlet LCLevelView *levelStar;@end@implementation LCMyBusinessTableViewCell-(void)setLcBusinessdata:(LCBusinessData *)lcBusinessdata{    _lcBusinessdata = lcBusinessdata;    self.iconView.image = [UIImage imageNamed:lcBusinessdata.icon];    self.nameLabel.text = lcBusinessdata.name;    self.levelLabel.text = @(lcBusinessdata.level).description;    self.averagePriceLabel.text = [NSString stringWithFormat:@"人均消费%.1f元",lcBusinessdata.averagePrice];    // 如果是64位时CGFloat就是一个double 类型的数值在转换成字符串时可能会出现灵异事件,如果出现就用float去替换    self.offNumLabel.text = [NSString stringWithFormat:@"%@折", @(lcBusinessdata.offNum).description];    self.distanceLabel.text = [NSString stringWithFormat:@"距离%.fm", lcBusinessdata.distance];    self.discountLabel.text = lcBusinessdata.discount;    // 自定义星星    self.levelStar.level = lcBusinessdata.level;}/* layoutSubviews在以下情况下会被调用： 1、init初始化不会触发layoutSubviews 但是是用initWithFrame 进行初始化时，当rect的值不为CGRectZero时,也会触发 2、addSubview会触发layoutSubviews 3、设置view的Frame会触发layoutSubviews，当然前提是frame的值设置前后发生了变化 4、滚动一个UIScrollView会触发layoutSubviews 5、旋转Screen会触发父UIView上的layoutSubviews事件 6、改变一个UIView大小的时候也会触发父UIView上的layoutSubviews事件 */- (void)layoutSubviews {    [super layoutSubviews];    self.jian.backgroundColor = [UIColor orangeColor];}@end