可能使用NSURLProtocol的一个子类，即使用MPMovieController或AVFoun

我目前正在尝试播放视频，有一个自定义NSURLProtocol子类中定义的自定义方案的URL。起初，我试图做到这一点使用的MPMoviePlayerController，但遇到了问题，并检查堆栈溢出后，我发现的MPMoviePlayerController不处理NSURLProtocol子类如预期。

如何玩电影使用自定义NSURLProtocol网址？

因此，我决定看看AVFoundation框架，但是，似乎这也似乎并没有工作。我只是想知道，如果这是可能的，还是我想要穿墙走？

使用AVFoundation，我使用的方法如下所示。这也许值得一提的是，使用一个标准的URL，以在互联网上托管视频时的作品，但不与定制NSURLProtocol工作。

// this doesn't work
//AVPlayer *player = [[AVPlayer alloc] initWithURL:[NSURL urlWithString:@"custom URL scheme"]];
// this works
AVPlayer *player = [[AVPlayer alloc] initWithURL:[NSURL urlWithString:@"some url to video on remote server"]];

AVPlayerLayer *layer = [AVAVPlayerLayer playerLayerWithPlayer:player];
// configure the layer
[self.view.layer addSublayer:layer];

[player play];

有什么不同，将需要以完成从定义的NSURLProtocol子玩？

最近，我设法NSURLProtocol与工作的MPMoviePlayerController。这主要是有用的，因为只的MPMoviePlayerController接受一个NSURL所以也没让我们通过cookies或头（认证）。使用NSURLProtocol允许这一点。我想我会在这里分享一些代码为社会的一次。

基本上，通过使用NSURLProtocol，我们可以拦截的MPMoviePlayerController和流请求之间的通信，注入饼干一路走来，或可能流离线保存，或用猫视频ECT取代它......要做到这一点，你需要创建一类新我伸出NSURLProtocol：

MyURLProtocol.h：

#import <Foundation/Foundation.h>

@interface MyURLProtocol : NSURLProtocol
+ (void) register;
+ (void) injectURL:(NSString*) urlString cookie:(NSString*)cookie;
@end

MyURLProtocol.m：

#import "MyURLProtocol.h"

@interface MyURLProtocol() <NSURLConnectionDelegate> {
    NSMutableURLRequest* myRequest;
    NSURLConnection * connection;
}
@end

static NSString* injectedURL = nil;
static NSString* myCookie = nil;

@implementation MyURLProtocol
// register the class to intercept all HTTP calls
+ (void) register
{
    [NSURLProtocol registerClass:[self class]];
}

// public static function to call when injecting a cookie
+ (void) injectURL:(NSString*) urlString cookie:(NSString*)cookie
{
    injectedURL = urlString;
    myCookie = cookie;
}

// decide whether or not the call should be intercepted
+ (BOOL)canInitWithRequest:(NSURLRequest *)request {
    if([[[request allHTTPHeaderFields] objectForKey:@"BANANA"] isEqualToString:@"DELICIOUS"])
    {
        return NO;
    }
    return [[[request URL] absoluteString] isEqualToString:injectedURL];
}

// required (don't know what this means)
+ (NSURLRequest *)canonicalRequestForRequest:(NSURLRequest *)request {
    return request;
}

// intercept the request and handle it yourself
- (id)initWithRequest:(NSURLRequest *)request cachedResponse:(NSCachedURLResponse *)cachedResponse client:(id<NSURLProtocolClient>)client {

    if (self = [super initWithRequest:request cachedResponse:cachedResponse client:client]) {
        myRequest = request.mutableCopy;
        [myRequest setValue:@"DELICIOUS" forHTTPHeaderField:@"BANANA"]; // add your own signature to the request
    }
    return self;
}

// load the request
- (void)startLoading {
    //  inject your cookie
    [myRequest setValue:myCookie forHTTPHeaderField:@"Cookie"];
    connection = [[NSURLConnection alloc] initWithRequest:myRequest delegate:self];
}

// overload didReceive data
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
    [[self client] URLProtocol:self didLoadData:data];
}

// overload didReceiveResponse
- (void)connection:(NSURLConnection*)connection didReceiveResponse:(NSURLResponse *)response {
    [[self client] URLProtocol:self didReceiveResponse:response cacheStoragePolicy:[myRequest cachePolicy]];
}

// overload didFinishLoading
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    [[self client] URLProtocolDidFinishLoading:self];
}

// overload didFail
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
    [[self client] URLProtocol:self didFailWithError:error];
}

// handle load cancelation
- (void)stopLoading {
    [connection cancel];
}

@end

用法：

[MyURLProtocol register];
[MyURLProtocol injectURL:@"http://server/your-video-url.mp4" cookie:@"mycookie=123"];
MPMoviePlayerController* moviePlayer = [[MPMoviePlayerController alloc]initWithContentURL:@"http://server/your-video-url.mp4"];
[moviePlayer play];