新闻头条-软件开发

在我们生活中，浏览新闻的软件处处可见，今日头条，腾讯新闻我们可以浏览到最新的咨询

手机新闻时时在更新，而且内容格式不一，对于开发者来说必须好好进行需求分析 

今天讲的这些问题适合初学者学习

这个项目使用了mvc 设计思路 将数据 view controller 进行分离 分别进行封装 

这个项目 有几个模块 有四种不同的cell 里面的内容 图片 也不同 ，我们要对其进行一层层封装 

好的代码不是一下完成的 我们需要先将基本功能完成，然后对我们的代码进行重构，优化 

这样以来代码的质量会提升，并且易于维护，增加了这款软件的生命周期 

上主要代码了：

//
//  QHViewController.h#import @interface QHViewController : UIViewController@end

//  QHViewController.m#import "QHViewController.h"
#import "QHnews.h"
#import "NSArray+Ext.h"
#import "QHLargeCell.h"
#import "QHListCell.h"
#import "QHOriginCell.h"
#import "QHAppCell.h"@interface QHViewController ()@property(nonatomic,strong)NSArray *newses;@end@implementation QHViewController-(NSArray *)newses
{if (_newses == nil) {NSString *path = [[NSBundle mainBundle]pathForResource:@"news.plist" ofType:nil];NSArray *array = [NSArray arrayWithContentsOfFile:path];NSMutableArray *objs = [NSMutableArray array];for(NSDictionary *dic in array){//封装模型 QHnews *news = [QHnews newsWithDict:dic];[objs addObject:news];}_newses = objs;}return _newses;
}#pragma mark UITableViewDataSource 代理方法
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{return self.newses.count;
}-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{UITableViewCell * cell = [[UITableViewCell alloc]init];/*if (cell == nil) {cell = [tableView dequeueReusableCellWithIdentifier:cellName];}cell.textLabel.text = @"test";*/QHnews *news = self.newses[indexPath.row];if ([news.category isEqualToString:@"large"]) {QHLargeCell *cell = [QHLargeCell largeCellWithTableView:tableView];cell.news = self.newses[indexPath.row];return cell;}if ([news.category isEqualToString:@"list"]) {QHListCell *cell = [QHListCell listCellWithTableView:tableView];cell.news = self.newses[indexPath.row];return cell;}if ([news.category isEqualToString:@"origin"]) {QHOriginCell *cell = [QHOriginCell originWithTableView:tableView];cell.news = self.newses[indexPath.row];return cell;}if([news.category isEqualToString:@"app"]){QHAppCell *cell = [QHAppCell appWithTableView:tableView];cell.news = self.newses[indexPath.row];return cell;}return cell;}-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{QHnews *news = self.newses[indexPath.row];if([news.category isEqualToString:@"large"]){return 150;}if ([news.category isEqualToString:@"list"]) {return 150;}if([news.category isEqualToString:@"origin"]){return 100;}if ([news.category isEqualToString:@"app"]) {return 120;}return 100;
}
-(BOOL)prefersStatusBarHidden
{return YES;
}
- (void)viewDidLoad {[super viewDidLoad];//NSLog(@"%@",self.newses);// Do any additional setup after loading the view.
}- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning];// Dispose of any resources that can be recreated.
}@end

//
//  QHLargeCell.h#import 
#import "QHnews.h"@interface QHLargeCell : UITableViewCell
@property(nonatomic,strong)QHnews *news;
+(id)largeCellWithTableView:(UITableView *)tableView;@end

//
//  QHLargeCell.m#import "QHLargeCell.h"@interface QHLargeCell()
@property (weak, nonatomic) IBOutlet UILabel *titleLabel;
@property (weak, nonatomic) IBOutlet UIImageView *pictureImageView;@property (weak, nonatomic) IBOutlet UILabel *sourceLabel;@property (weak, nonatomic) IBOutlet UILabel *timeLabel;@end@implementation QHLargeCell+(id)largeCellWithTableView:(UITableView *)tableView
{NSString *name = NSStringFromClass([self class]);UINib *nib = [UINib nibWithNibName:name bundle:nil];[tableView registerNib:nib forCellReuseIdentifier:name];return [tableView dequeueReusableCellWithIdentifier:name];
}-(void)setNews:(QHnews *)news
{_news = news;self.titleLabel.text = news.title;self.sourceLabel.text = news.source;self.timeLabel.text = news.time;self.pictureImageView.image = [UIImage imageNamed:news.picture];// NSLog(@"%@---------------",news.picture);// NSLog(@"%@++++++",self.pictureImageView.image);
}- (void)awakeFromNib {// Initialization code
}- (void)setSelected:(BOOL)selected animated:(BOOL)animated {[super setSelected:selected animated:animated];// Configure the view for the selected state
}@end

//
//  QHnews.h//建立数据模型#import @interface QHnews : NSObject/***  新闻条目分类*/
@property(nonatomic,copy)NSString *category;
/***  记录图片数组*/
@property(nonatomic,strong)NSArray *pics;/***  数据来源*/@property(nonatomic,copy)NSString *source;
/***  发布时间*/@property(nonatomic,copy)NSString *time;/***  标题*/@property(nonatomic,copy)NSString *title;/***  用来记录单张图片*/
@property(nonatomic,copy)NSString *picture;/***  用来记录推广软件的名称*/
@property(nonatomic,copy)NSString *appname;/***  推广软件图片*/
@property(nonatomic,copy)NSString *icon;@property(nonatomic,strong)QHnews *news;
+(id)newsWithDict:(NSDictionary *)dict;
-(id)initWithDict:(NSDictionary *)dict;
@end

//
//  QHnews.m#import "QHnews.h"@implementation QHnews
+(id)newsWithDict:(NSDictionary *)dict
{return [[self alloc]initWithDict:dict];
}
-(id)initWithDict:(NSDictionary *)dict
{if (self == [super init]) {[self setValuesForKeysWithDictionary:dict];}return self;
}- (NSString *)description
{return [NSString stringWithFormat:@"catefory = %@,source = %@,title = %@", _category,_source,_title];
}
@end

本文来自互联网用户投稿，文章观点仅代表作者本人，不代表本站立场，不承担相关法律责任。如若转载，请注明出处。 如若内容造成侵权/违法违规/事实不符，请点击【内容举报】进行投诉反馈！