iPhone：initWithContentURL 不播放视频

Question

I have a .mp4 video url in my server and trying to play by using the following code. But it doesn't do any actions when click on play button. I'm trying to test on iPhone 4.0 simulator or iPod 4.1 device. Is there anything wrong here (or) can't it work on iOS 4.0 or 4.1?

NSURL *url = [NSURL fileURLWithPath:encodedURL];
MPMoviePlayerController *videoPlayer = [[MPMoviePlayerController alloc]initWithContentURL:url];
[self.view addSubview:videoPlayer.view];
videoPlayer.view.frame = CGRectMake(0, 0, 320, 480);
[videoPlayer play];

请指教！

Encode function:

NSString *newString = [(NSString *)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (CFStringRef)string, NULL, CFSTR("?#[]@!$ &'()*+,;=\"<>%{}|^~`"), CFStringConvertNSStringEncodingToEncoding(NSUTF8StringEncoding)) autorelease];

Answer 1

如果文件位于服务器上，则以下行：

NSURL *url = [NSURL fileURLWithPath:encodedURL];

应该是：

NSURL *url = [NSURL URLWithString:encodedURL];

您还应该仔细检查控制台的 NSlog 字符串是否正确。