Question

我完全不熟悉 XML 。

有没有人有一个示例代码来帮助我构建一个自定义类来解析Microsoft .asx 文件，以便在iPhone上按顺序播放mms流？

一些谷歌搜索告诉我，.xml和.asx有些相关，但第二个与第一个相比非常有限。

我需要在 .asx 容器中按顺序播放三个流：

<asx version="3.0">
<TITLE>MYSONGS</TITLE>
<entry>
<TITLE>www.mysite.com</TITLE>
<ref href="mms://mysite.com/musicFolder/song1.wma" />
</entry>
<entry>
<TITLE>MYSONGS</TITLE>
<ref href="mms://mysite.com/musicFolder/song2.wma" />
</entry>
<entry>
<TITLE>www.mysite.com</TITLE>
<ref href="mms://mysite.com/musicFolder/song3.wma" />
</entry>
</asx>

我已经能够解析mms流，解码并播放wma文件。我只是无法解析 .asx 内容，按顺序播放流。谢谢！

Answer 1

在我的情况下，我已经能够使用 TouchXML 成功解析.asx文件，使用此代码（我在http://foobarpig.com/iphone/parsing-xml-element-attributes-with-touchxml.html):提供的原始版本中修改了

         //  we will put parsed data in an a array
        NSMutableArray *res = [[NSMutableArray alloc] init];
        NSURL *url = [NSURL URLWithString: @"http://www.yoursite.com/WindowsMediaDotCom/theFileToParse.asx"];

        /* have TouchXML parse it into a CXMLDocument */
        CXMLDocument *document = [[[CXMLDocument alloc] initWithContentsOfURL:url options:0 error:nil] autorelease];

        NSArray *nodes = NULL;
        //  searching for piglet nodes
        nodes = [document nodesForXPath:@"//ref" error:nil];

        for (CXMLElement *node in nodes) {
            NSMutableDictionary *item = [[NSMutableDictionary alloc] init];
            int counter;
            for(counter = 0; counter < [node childCount]; counter++) {
                //  common procedure: dictionary with keys/values from XML node
                [item setObject:[[node childAtIndex:counter] stringValue] forKey:[[node childAtIndex:counter] name]];
            }

            //  and here it is - attributeForName! Simple as that.
            [item setObject:[[node attributeForName:@"href"] stringValue] forKey:@"href"];  // <------ this magical arrow is pointing to the area of interest

            [res addObject:item];
            [item release];
        }

        //   and we print our results
        NSLog(@"%@", res);

iPhone NSXMLParse用于.asx文件

1 个答案: