iOS - 使用Javascript播放嵌入的YouTube视频

时间:2012-03-06 16:41:00

标签: ios uiwebview youtube embed stringbyevaluatingjavascr

我希望这是可能的。我已在我的应用中的UIWebView内嵌入了YouTube视频。我正在使用stringByEvaluatingJavaScriptFromString方法来使用javascript。我想按下应用程序中的按钮,开始播放YouTube视频。以下是一些代码,概述了我想说的内容。

嵌入功能:

- (void)embedVideo:(NSString *)urlString frame:(CGRect)frame {
    NSString *embedHTML = @"\
    <html><head>\
    <style type=\"text/css\">\
    body {\
    background-color: transparent;\
    color: white;\
    }\
    </style>\
    </head><body style=\"margin:0\">\
    <embed id=\"yt\" src=\"%@\" type=\"application/x-shockwave-flash\" \
    width=\"330\" height=\"200\"></embed>\
    </body></html>";

    NSString *html = [NSString stringWithFormat:embedHTML, urlString];
    videoView = [[UIWebView alloc] initWithFrame:frame];
    [videoView loadHTMLString:html baseURL:nil];
    [self.detailedView addSubview:videoView];
}

触摸内部处理程序:

-(IBAction)detailedWatchTUI:(id)sender 
{
    [videoView stringByEvaluatingJavaScriptFromString:@"var script = document.createElement('script');"
     "script.type = 'text/javascript';"  
     "script.text = \"function start() { "
     "var player = document.getElementById('yt');"
     "player.play();"
     "}\";"  
     "document.getElementsByTagName('head')[0].appendChild(script);"];  

    [videoView stringByEvaluatingJavaScriptFromString:@"start();"]; 
}

我能够提醒元素播放器,它确实找到了嵌入的HTML对象,所以我知道javascript正在运行,但我无法让它开始播放。我已经尝试了 player.playVideo(); player.play(); 但没有运气。

有什么建议吗?

1 个答案:

答案 0 :(得分:1)

您可以尝试这样做:在UIWebView中循环子视图,找到播放按钮并在代码中单击它:

- (UIButton *)findButtonInView:(UIView *)view
{
    if ([view isMemberOfClass:[UIButton class]]) {
        return (UIButton *)view;
    }
    for (UIView *subview in view.subviews) {
        UIButton *button = [self findButtonInView:subview];
        if (button) {
            return button;
        }
    }
    return nil;
}
- (void)playButtonTapped
{
    UIButton *button = [self findButtonInView:self.webView];
    [button sendActionsForControlEvents:UIControlEventTouchUpInside];
}