2016 - 1 - 23 json转模型 常用的第三方框架

一: 三个常用的框架

1. Mantle

- 所有模型必须继承MTModel

2. JSONModel

- 所有模型必须继承JSONModel

3.MJExtension

- 不需要继承任何东西。

- 代码:

//
//  TableViewController.m
//  json
//
//  Created by Mac on 16/1/23.
//  Copyright © 2016年 Mac. All rights reserved.
//

#import "TableViewController.h"
#import <UIImageView+WebCache.h>
#import <MediaPlayer/MediaPlayer.h>
#import "ZZVideo.h"
#import <MJExtension.h>
@interface TableViewController ()
@property (nonatomic, strong) NSArray  *videos;

@end

@implementation TableViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    NSURL *url = [NSURL URLWithString:@"http://120.25.226.186:32812/video"];

    NSURLRequest *request =  [NSURLRequest requestWithURL:url];

    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) {
        NSDictionary *dic =  [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];

        self.videos = [ZZVideo mj_objectArrayWithKeyValuesArray:dic[@"videos"]];

//        NSLog(@"%zd",_videos.count);
        [self.tableView reloadData];
    }];

}

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
//#warning Incomplete implementation, return the number of sections
    return ;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
//#warning Incomplete implementation, return the number of rows
    return self.videos.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
        static NSString *ID = @"video";

        UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];

        ZZVideo *video = self.videos[indexPath.row];

        cell.detailTextLabel.text = [NSString stringWithFormat:@"视频时长: %ld",(long)video.length];

        cell.textLabel.text= video.name;

        NSString *image = [@"http://120.25.226.186:32812" stringByAppendingPathComponent:video.image];

        [cell.imageView sd_setImageWithURL:[NSURL URLWithString:image] placeholderImage:nil];

        return cell;
}
#pragma mark - 代理
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
        ZZVideo *video = self.videos[indexPath.row];

        NSString *videoStr = [@"http://120.25.226.186:32812" stringByAppendingPathComponent:video.url];

        MPMoviePlayerViewController *vc = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL URLWithString:videoStr]];

        [self presentViewController:vc animated:YES completion:nil];

}
@end

二: 设计第三方框架需要考虑的地方

1.侵入性:

- 侵入性大就意味着项目很难离开这个框架

2.易用性

- 比如少量代码就可以实现很多功能

3.扩展性

- 很容易给框架增加新的功能