UIWebview不能很好地显示适用于iOS 8的嵌入式youtube [英] UIWebview does not display embedded youtube well for iOS 8
问题描述
我很难在UIWebview中播放嵌入的youtube.
I have difficulty to play embed youtube in UIWebview.
如果我使用了youtube的默认嵌入格式，则它不会在UIWebview中显示任何内容.只是空白.
If I used the default embed format from youtube, it does not show anything in the UIWebview. Just blank.
NSString *htmlString = @"<html><body><iframe width=\"420\" height=\"315\" src=\"//www.youtube.com/embed/XNnaxGFO18o?rel=0\" frameborder=\"0\" allowfullscreen></iframe></body></html>";
[self.webView loadHTMLString:htmlString baseURL:nil];
我在Google周围搜索，发现以下代码有效.
I googled around and found the following code works.
NSString* embedHTML = @"\
<html><body style=\"margin:0;\">\
<<div class=\"emvideo emvideo-video emvideo-youtube\"><embed id=\"yt\" src=\"http://www.youtube.com/embed/bPM8LKYMcXs?hd=1\" width=\"320\" height=\"250\"></embed></div>\
</body></html>";
[self.webView loadHTMLString:embedHTML baseURL:nil];
但是，有一个问题.如果我单击播放按钮，则无任何响应.我必须单击播放按钮几次，然后等待一会儿，然后它开始旋转然后播放.
However, there is a problem. If I click the play button, it has no response. I have to click the play button a couple of times and wait a while, then it starts to spin and then play.
所以我有两个问题.
1)您是否有更好的方法在UIWebView中播放嵌入的youtube视频? 2)单击播放按钮后如何立即播放视频?
1) Do you have a better way to play embed youtube video in UIWebView? 2) How to play the video instantly after you click the play button?
谢谢.
推荐答案
创建一个普通的html文件并将其命名为youtubeEmbedding.html并将其添加到youtubeEmbedding.html中的项目中，只需将以下代码添加到
create a plain html file and name it as youtubeEmbedding.html and add it to your project in the youtubeEmbedding.html just add the below code to .html file
<!DOCTYPE html>
<html>
<head>
<style>body{margin:0px 0px 0px 0px;}</style>
</head>
<body>
<div id="player"></div>
<script>
var tag = document.createElement('script');
tag.src = 'http://www.youtube.com/player_api';
var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
firstScriptTag.requestFullScreen();
var ytplayer = null;
function onYouTubePlayerAPIReady()
{
ytplayer = new YT.Player(
'player',
{
videoId:'%@',
width:'%0.0f',
height:'%0.0f', %@
playerVars:
{
'controls': %d,
'playsinline' : 0,
'rel':0,
'showinfo':0
},
});
}
function onPlayerReady(event)
{
event.target.playVideo();
}
function stopVideo()
{
if (ytplayer)
{
ytplayer.stopVideo();
ytplayer.clearVideo();
}
return 'STOPPED';
}
function playVideo()
{
if (ytplayer)
{
ytplayer.playVideo();
}
return 'PLAY';
}
function pauseVideo()
{
if (ytplayer)
{
ytplayer.pauseVideo();
ytplayer.clearVideo();
}
return 'PAUSED';
}
function getPlayerState()
{
return ytplayer.getPlayerState();
}
function isPlaying()
{
return (myPlayerState == YT.PlayerState.PLAYING);
}
function isPaused()
{
return (myPlayerState == YT.PlayerState.PAUSED);
}
function onPlayerError(event)
{
alert("Error");
}
</script>
</body>
并在您正在使用网络视图的控制器中执行以下操作
and in the controller where u are using web view just do like below
- (void)viewDidLoad
{
BOOL autoPlay = NO;
// Do any additional setup after loading the view, typically from a nib.
NSString *youTubeVideoHTML = [[NSString alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"youtubeEmbedding" ofType:@"html"] encoding:NSUTF8StringEncoding error:nil];
NSString *autoPlayString = autoPlay ? @"events: {'onReady' : onPlayerReady }," : @""; //customise it weather u want to autoplay or not
NSURL *url = [NSURL URLWithString:@"https://www.youtube.com/watch?v=AYo72E7ZMHM"];
NSString *lastComponent = [url query];
NSString *videoId = [lastComponent stringByReplacingOccurrencesOfString:@"v=" withString:@""]; //get the video id from url
NSInteger controls = 1; //i want to show controles for play,pause,fullscreen ... etc
NSString *html = [NSString stringWithFormat:youTubeVideoHTML, videoId, CGRectGetWidth(_webView.frame), CGRectGetHeight(_webView.frame), autoPlayString, controls]; //setting the youtube video width and height to fill entire the web view
_webView.mediaPlaybackRequiresUserAction = NO;
_webView.delegate = self; //not needed
[_webView loadHTMLString:html baseURL:[[NSBundle mainBundle] resourceURL]]; //load it to webview
}
//for playing action
- (IBAction)playAction:(id)sender
{
[_webView stringByEvaluatingJavaScriptFromString:@"ytplayer.playVideo()"];
}
如果您有任何问题，请发表评论，希望这对您有帮助..:)
comment if u hav any problem, hope this helps u .. :)
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