那些年我敲过的NSURLConnection. . . . .

前言:
NSURLConnection虽然已经废弃多年但是不能否定的是它带我从iOS的UI编程升级到了iOS的网络编程_{再重新敲这些代码的时候我我发现网络封装的思维在被逐渐培养}
viewController.m文件

#import "ViewController.h"
#import "UIImageView+WebCache.h"
#import <MediaPlayer/MediaPlayer.h> //系统自带多媒体播放器 ;
//#import <AVKit/AVKit.h>  //现在用来替换 MediaPlayer ;
static NSString *const cellID = @"video" ;
@interface ViewController ()
//videoArray:
@property (nonatomic, strong) NSArray *videoArray ;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    NSURL *urlString = [NSURL URLWithString:@"http://120.25.226.186:32812/video"] ;
    NSURLRequest *request = [NSURLRequest requestWithURL:urlString] ;
    [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.videoArray = dic[@"videos"] ;
        NSLog(@"%zd" , self.videoArray.count) ;
        [self.tableView reloadData] ;
        NSLog(@"完成刷新表格任务") ;
    }] ;
}

#pragma mark - <UITableViewDataSource>
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return self.videoArray.count ;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID] ;
    //解析:
    NSDictionary *videoDic = self.videoArray[indexPath.row] ;
    cell.textLabel.text = videoDic[@"name"] ;
    //cell.detailTextLabel.text = videoDic[@"length"] ;    
    //NSNumber 不能直接当成字符串来用:
    cell.detailTextLabel.text = [NSString stringWithFormat:@"时长:%zd" , videoDic[@"length"]] ;
    NSString *imageString = [@"http://120.25.226.186:32812" stringByAppendingPathComponent:videoDic[@"image"]] ;
    NSURL *url = [NSURL URLWithString:imageString] ;
    [cell.imageView sd_setImageWithURL:url placeholderImage:[UIImage imageNamed:@"00"]] ;
    return cell ;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    NSDictionary *videoDic = self.videoArray[indexPath.row] ;
    NSString *urlStr = [@"http://120.25.226.186:32812" stringByAppendingPathComponent:videoDic[@"url"]] ;
    //@interface MPMoviePlayerController     : NSObject         <MPMediaPlayback>
    //继承自NSObject,是没有图像的概念的:
    //@interface MPMoviePlayerViewController : UIViewController
    //MPMoviePlayerViewController已经被废弃 ;
    //NS_DEPRECATED_IOS(3_2, 9_0, "Use AVPlayerViewController in AVKit.")
    //__TVOS_PROHIBITED
    MPMoviePlayerViewController *vc = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL URLWithString:urlStr]] ;
    [self presentViewController:vc animated:YES completion:^{
        NSLog(@"模态视图跳转到MPMoviePlayerController视频播放器") ;
    }] ;
}

@end

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