源码0602-03-掌握-XML解析-NSXMLParser

 

 

 

//
//  ViewController.m
//  01-掌握-JSON解析
#import "ViewController.h"
#import <UIImageView+WebCache.h>
#import <MediaPlayer/MediaPlayer.h>
#import "XMGVideo.h"
#import <MJExtension.h>

@interface ViewController () <NSXMLParserDelegate>
/** 视频数据 */
@property (nonatomic, strong) NSMutableArray *videos;
@end

@implementation ViewController

- (NSMutableArray *)videos
{
    if (!_videos) {
        _videos = [NSMutableArray array];
    }
    return _videos;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    
    // 0.请求路径
    NSURL *url = [NSURL URLWithString:@"http://120.25.226.186:32812/video?type=XML"];
    
    // 1.创建请求对象
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    
    // 2.发送请求
    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
        // 创建XML解析器
        NSXMLParser *parser = [[NSXMLParser alloc] initWithData:data];

        // 设置代理
        parser.delegate = self;

        // 开始解析XML
        [parser parse];

        // 刷新表格
        [self.tableView reloadData];
    }];
}

#pragma mark - <NSXMLParserDelegate>
/**
 * 解析到某个元素的结尾（比如解析</videos>）
 */
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
//    NSLog(@"didEndElement - %@", elementName);
}

/**
 * 解析到某个元素的开头（比如解析<videos>）
 */
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
    if ([elementName isEqualToString:@"videos"]) return;
//    XMGVideo *video = [[XMGVideo alloc] init];
//    video.keyValues = attributeDict;
    
    XMGVideo *video = [XMGVideo objectWithKeyValues:attributeDict];
    [self.videos addObject:video];
}

/**
 * 开始解析XML文档
 */
- (void)parserDidStartDocument:(NSXMLParser *)parser
{
//    NSLog(@"parserDidStartDocument");
}

/**
 * 解析完毕
 */
- (void)parserDidEndDocument:(NSXMLParser *)parser
{
//    NSLog(@"parserDidEndDocument");
}


#pragma mark - 数据源方法
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return self.videos.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *ID = @"video";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];
    
    XMGVideo *video = self.videos[indexPath.row];
    
    cell.textLabel.text = video.name;
    cell.detailTextLabel.text = [NSString stringWithFormat:@"时长：%zd", video.length];
    
    NSString *image = [@"http://120.25.226.186:32812" stringByAppendingPathComponent:video.image];
    [cell.imageView sd_setImageWithURL:[NSURL URLWithString:image] placeholderImage:[UIImage imageNamed:@"placeholder"]];
    
    return cell;
}

#pragma mark - 代理方法
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    XMGVideo *video = self.videos[indexPath.row];
    NSString *urlStr = [@"http://120.25.226.186:32812" stringByAppendingPathComponent:video.url];
    
    // 创建视频播放器
    MPMoviePlayerViewController *vc = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL URLWithString:urlStr]];

    // 显示视频
    [self presentViewController:vc animated:YES completion:nil];
}

@end

 

//
//  XMGVideo.h
//  01-掌握-JSON解析
#import <Foundation/Foundation.h>

@interface XMGVideo : NSObject
/** ID */
@property (nonatomic, assign) NSInteger ID;
/** 视频名字 */
@property (nonatomic, copy) NSString *name;
/** 视频时长 */
@property (nonatomic, assign) NSInteger length;
/** 视频图片 */
@property (nonatomic, copy) NSString *image;
/** 视频文件路径 */
@property (nonatomic, copy) NSString *url;
@end

//
//  XMGVideo.m
//  01-掌握-JSON解析
#import "XMGVideo.h"

@implementation XMGVideo
//+ (NSDictionary *)replacedKeyFromPropertyName
//{
//    return @{@"ID" : @"id",
//             @"desc" : @"description"};
//}
@end

04-掌握-XML解析-GDataXML

 

//
//  ViewController.m
//  01-掌握-JSON解析

#import "ViewController.h"
#import <UIImageView+WebCache.h>
#import <MediaPlayer/MediaPlayer.h>
#import "XMGVideo.h"
#import <MJExtension.h>
#import "GDataXMLNode.h"

@interface ViewController ()
/** 视频数据 */
@property (nonatomic, strong) NSMutableArray *videos;
@end

@implementation ViewController

- (NSMutableArray *)videos
{
    if (!_videos) {
        _videos = [NSMutableArray array];
    }
    return _videos;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    
    // 0.请求路径
    NSURL *url = [NSURL URLWithString:@"http://120.25.226.186:32812/video?type=XML"];
    
    // 1.创建请求对象
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    
    // 2.发送请求
    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
        // 加载整个文档
        GDataXMLDocument *doc = [[GDataXMLDocument alloc] initWithData:data options:0 error:nil];
        
        // 获得所有video元素
        NSArray *elements = [doc.rootElement elementsForName:@"video"];
        for (GDataXMLElement *ele in elements) {
            XMGVideo *video = [[XMGVideo alloc] init];
            video.name = [ele attributeForName:@"name"].stringValue;
            video.url = [ele attributeForName:@"url"].stringValue;
            video.image = [ele attributeForName:@"image"].stringValue;
            video.length = [ele attributeForName:@"length"].stringValue.integerValue;
            
            [self.videos addObject:video];
        }
        
        // 刷新表格
        [self.tableView reloadData];
    }];
}

#pragma mark - 数据源方法
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return self.videos.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *ID = @"video";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];
    
    XMGVideo *video = self.videos[indexPath.row];
    
    cell.textLabel.text = video.name;
    cell.detailTextLabel.text = [NSString stringWithFormat:@"时长：%zd", video.length];
    
    NSString *image = [@"http://120.25.226.186:32812" stringByAppendingPathComponent:video.image];
    [cell.imageView sd_setImageWithURL:[NSURL URLWithString:image] placeholderImage:[UIImage imageNamed:@"placeholder"]];
    
    return cell;
}

#pragma mark - 代理方法
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    XMGVideo *video = self.videos[indexPath.row];
    NSString *urlStr = [@"http://120.25.226.186:32812" stringByAppendingPathComponent:video.url];
    
    // 创建视频播放器
    MPMoviePlayerViewController *vc = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL URLWithString:urlStr]];

    // 显示视频
    [self presentViewController:vc animated:YES completion:nil];
}

@end