UIWebView mediaPlaybackRequiresUserAction example in Objective C (iOS).

UIWebView mediaPlaybackRequiresUserAction

A Boolean value that determines whether HTML5 videos can play automatically or require the user to start playing them.

@property(nonatomic) BOOL mediaPlaybackRequiresUserAction

Discussion of [UIWebView mediaPlaybackRequiresUserAction]
The default value on both iPad and iPhone is YES.

UIWebView mediaPlaybackRequiresUserAction example.

     NSString *html = [NSString stringWithFormat:embedHTML, webView.frame.size.width, webView.frame.size.height];
     [webView loadHTMLString:html baseURL:nil];
     webView.allowsInlineMediaPlayback = YES;
     webView.mediaPlaybackRequiresUserAction = NO;

     webView.transform = CGAffineTransformMakeRotation(3.14/2);

     [moviePlayerWindow addSubview:webView];

Example of [UIWebView mediaPlaybackRequiresUserAction].

- (void)viewDidLoad
{
    [super viewDidLoad];

    UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 150)];
    [webView setMediaPlaybackRequiresUserAction:NO];
    [webView loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"YT_Player" ofType:@"html"] isDirectory:NO]]];
    [self.view addSubview:webView];
}

UIWebView mediaPlaybackRequiresUserAction example.

@implementation YouTubeWebView

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self == nil) return nil;

    self.mediaPlaybackRequiresUserAction = NO;
    self.delegate = self;
    self.alpha = 0;

    return self;
}

- (void)loadVideo:(NSString *)videoId
{
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"youtube" ofType:@"html"];
    //    if (filePath == nil)

    NSError *error;
    NSString *string = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:&error];
    // TODO: error check

    string = [NSString stringWithFormat:string, videoId];

    NSData *htmlData = [string dataUsingEncoding:NSUTF8StringEncoding];
    //    if (htmlData == nil)

    NSString *documentsDirectoryPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
    NSString *targetPath = [documentsDirectoryPath stringByAppendingPathComponent:@"youtube.html"];
    [htmlData writeToFile:targetPath atomically:YES];

    [self loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:targetPath]]];
}

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
    if ([[[request URL] scheme] isEqualToString:@"callback"]) {
        [self removeFromSuperview];

        NSString *documentsDirectoryPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
        NSString *targetPath = [documentsDirectoryPath stringByAppendingPathComponent:@"youtube.html"];
        NSError *error;
        [[NSFileManager defaultManager] removeItemAtPath:targetPath error:&error];
//        TODO: error check
    }

    return YES;
}

End of UIWebView mediaPlaybackRequiresUserAction example article.