โค้ด Objective-C ดาวน์โหลด คลิปจาก Youtube ของ Session (Barcamp Bangkhen #4)

BrowserViewController.m

....
#import "HCYoutubeParser.h"
#import "SVProgressHUD.h"
...


- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    
    self.title = @"Youtube Browser";
    self.navigationController.navigationBar.tintColor = [UIColor whiteColor];
    self.navigationController.navigationBar.barStyle = UIBarStyleBlackTranslucent;
    self.navigationController.navigationBar.barTintColor = [UIColor redColor];
    
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"home.png"] style:UIBarButtonItemStyleBordered target:self action:@selector(homePressed:)];
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Capture" style:UIBarButtonItemStyleBordered target:self action:@selector(capturePressed:)];
    
    [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://m.youtube.com"]]];
}

- (IBAction)homePressed:(id)sender {
    [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://m.youtube.com"]]];
}

- (IBAction)capturePressed:(id)sender {
//    NSLog(@"%s", __PRETTY_FUNCTION__);
    NSString *currentURL = [self.webView stringByEvaluatingJavaScriptFromString:@"window.location.href"];
    NSLog(@"Current URL : %@", currentURL);
    
    NSString *regEx = [NSString stringWithFormat:@"http://m.youtube.com/watch.?v"];
    NSRange range = [currentURL rangeOfString:regEx options:NSRegularExpressionSearch];
    
    if (range.location != NSNotFound) {
        [SVProgressHUD show];
        NSURL *youtubeURL = [NSURL URLWithString:currentURL];
        [HCYoutubeParser h264videosWithYoutubeURL:youtubeURL completeBlock:^(NSDictionary *videoDictionary, NSError *error) {
            self.videos = videoDictionary;
            dispatch_async(dispatch_get_main_queue(), ^{
                [SVProgressHUD dismiss];
                self.actionSheet = [[UIActionSheet alloc] initWithTitle:@"Download" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil];
            
                for (NSString *res in [self.videos allKeys]) {
                    [self.actionSheet addButtonWithTitle:res];
                }
                [self.actionSheet addButtonWithTitle:@"Cancel"];
            
                [self.actionSheet showFromTabBar:[[super tabBarController] tabBar]];
            });
        }];
    
        [HCYoutubeParser detailsForYouTubeURL:youtubeURL completeBlock:^(NSDictionary *details, NSError *error) {
            self.videoDetails = details;
            //NSLog(@"Details : %@", details);
        }];
    
        [HCYoutubeParser thumbnailForYoutubeURL:youtubeURL thumbnailSize:YouTubeThumbnailDefaultHighQuality completeBlock:^(UIImage *image, NSError *error) {
            self.thumbImage = image;
        }];
    } else {
        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Error!!"
                                                            message:@"It is not a youtube video page!"
                                                           delegate:nil
                                                  cancelButtonTitle:@"OK"
                                                  otherButtonTitles: nil];
        [alertView show];
    }
}

...

#pragma mark - UIActionSheetDelegate

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
    if (buttonIndex != self.videos.count) {
        NSArray *allKeys = [self.videos allKeys];
        NSString *downloadURL = [self.videos objectForKey:[allKeys objectAtIndex:buttonIndex]];
        
        NSLog(@"Download %@", downloadURL);
        UITabBarController *tabBar = [super tabBarController];
        NSArray *allVC = [tabBar viewControllers];
        
        UINavigationController *downloadNavVC = [allVC objectAtIndex:1];
        DownloadViewController *downloadVC = [[downloadNavVC viewControllers] objectAtIndex:0];
        [downloadVC startDownloadingVideo:downloadURL withThumbImage:self.thumbImage andFileName:self.videoDetails[@"entry"][@"title"][@"$t"]];
        [tabBar setSelectedIndex:1];
    }
}

DownloadCell.m

...
#import "AFNetworking.h"
...

- (void)startingDownload {
    NSURL *url = [NSURL URLWithString:self.videoObj.downloadLink];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    
    AFHTTPRequestOperation *op;
    
    op = [[AFHTTPRequestOperation alloc] initWithRequest:request];
    
    NSArray *documentsSearchPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [documentsSearchPaths count] == 0 ? nil : [documentsSearchPaths objectAtIndex:0];
    
    NSString *targetFilename = [self.videoObj.fileName stringByAppendingString:@".mp4"];
    NSString *targetPath = [documentsDirectory stringByAppendingPathComponent:targetFilename];
    
    NSLog(@"Save to path : %@", targetPath);
    
    op.outputStream = [NSOutputStream outputStreamToFileAtPath:targetPath append:NO];
    
    [op setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
        
        self.videoObj.isDownloaded = YES;
        self.videoObj.isDownloading = YES;
        self.videoObj.filePath = targetPath;
        self.videoObj.fileSize = self.fileSize;
        self.progressView.hidden = YES;
        
        self.statusLabel.text = [NSString stringWithFormat:@"File Size : %.2f MB", self.videoObj.fileSize];
        [[VideoObjectManager sharedManager] updateDownloadContent];
        
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        self.statusLabel.text = @"Download Failed";
    }];
    
    [op setDownloadProgressBlock:^(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead) {
        if (totalBytesRead > 0) {
            self.progressView.progress = (float)totalBytesRead/ (float)totalBytesExpectedToRead;
            float totalReadMB = (float)totalBytesRead/1048576;
            float totalExpectedMB = (float)totalBytesExpectedToRead/1048576;
            
            self.fileSize = (float)totalExpectedMB;
            self.statusLabel.text = [NSString stringWithFormat:@"Downloading %.2f MB of %.2f MB", totalReadMB, totalExpectedMB];
        }
    }];
    
    [op start];
}

Podfile

platform :ios, '6.0'

pod 'AFNetworking', '1.3.2'
pod 'SVProgressHUD'
pod 'HCYoutubeParser'