关闭视频后删除视频缩略图（“完成”按钮）
我正在处理由我的公司托管的 mp4 视频，而不是 YouTube。
我使用以下代码在 UIWebView 中创建可单击的缩略图：
videoButtonHTML = [videoButtonHTML stringByAppendingFormat:@"<body bgcolor=\"#000000\"><a href=\"%@/\"><img src=\"%@\" width=\"120\" height=\"90\" border=\"0\" type=\"application/x-shockwave-flash\"/></a></body>", videoURL, self.imageLink];
[videoButtonWebview loadHTMLString:videoButtonHTML baseURL:nil];
起初效果很好。它创建缩略图并播放视频。问题是，当您关闭视频时，缩略图就会消失。我仍然有“空白”Quicktime 播放图像。不过我真的很想保留这个形象。
我已经尝试过使用和不使用冲击波标签 - 相同的结果。我在教程中发现了 embedYoutube 功能。它适用于 YouTube 视频，但不适用于 mp4 视频。这是该代码，以防有帮助：
- (void)embedYouTube1:(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=\"%0.0f\" height=\"%0.0f\"></embed>\
</body></html>";
NSString *html = [NSString stringWithFormat:embedHTML, urlString, frame.size.width, frame.size.height];
UIWebView *videoView = [[UIWebView alloc] initWithFrame:frame];
[videoView loadHTMLString:html baseURL:nil];
[self.view addSubview:videoView];
[videoView release];
}
知道发生了什么吗？
I am working with mp4 videos hosted by my company, not YouTube.
I am using the following code to create a clickable thumbnail in a UIWebView:
videoButtonHTML = [videoButtonHTML stringByAppendingFormat:@"<body bgcolor=\"#000000\"><a href=\"%@/\"><img src=\"%@\" width=\"120\" height=\"90\" border=\"0\" type=\"application/x-shockwave-flash\"/></a></body>", videoURL, self.imageLink];
[videoButtonWebview loadHTMLString:videoButtonHTML baseURL:nil];
This works fine at first. It creates the thumbnail and plays the video. The problem is that, when you close the video, the thumbnail image disappears. I still have the "blank" Quicktime play image. I really want to keep the image, though.
I've tried this both with and without the shockwave tag - same result. I found an embedYoutube function in a tutorial. It works great with YouTube videos, but not with mp4 videos. Here's that code, in case it helps:
- (void)embedYouTube1:(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=\"%0.0f\" height=\"%0.0f\"></embed>\
</body></html>";
NSString *html = [NSString stringWithFormat:embedHTML, urlString, frame.size.width, frame.size.height];
UIWebView *videoView = [[UIWebView alloc] initWithFrame:frame];
[videoView loadHTMLString:html baseURL:nil];
[self.view addSubview:videoView];
[videoView release];
}
Any idea what's going on?
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尝试将图像保存为
NSData，也许保存到您的NSUserDefaults（加载视频时），然后您可以显示 中的拇指默认值，而不是视频本身（当视频未加载时）。Try saving the image as
NSData, maybe to yourNSUserDefaults(when the video is loaded), then you can display the thumb from defaults, instead of the video itself (when the video is not loaded).