Android下使用TinyXml读取xml配置文件（Cocos2d-x游戏开发）

转载请保留原地址 http://www.cocos2dres.com/post/88.html 谢谢！！！

下载TinyXml库，集成到Cococs2d-x工程中，编译运行，写测试代码，一切顺利！

可是CygWin编译，生成APK后，在Android真机上跑，程序崩溃！这可愁死人了！！！！！

于是，周末有空看了下Cocos2dx的源码.
发现Android下的文件都是从zip里面读取,所以给Tinyxml增加了一个方法 可以使它在android下正确读取xml文件.

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/// Load Xml form memory buff. Returns true if successful.
bool TiXmlDocument::LoadMemory( const char * pBuff, int length, TiXmlEncoding encoding )
{
    if ( !pBuff || length == 0 )
    {
        SetError( TIXML_ERROR, 0, 0, TIXML_ENCODING_UNKNOWN );
        return false;
    }

    // If we have a file, assume it is all one big XML file, and read it in.
    // The document parser may decide the document ends sooner than the entire file, however.
    TIXML_STRING data;
    data.reserve( length );

    char* buf = new char[ length+1 ];
    buf[0] = 0;

    memcpy( buf, pBuff, length );

    const char* lastPos = buf;
    const char* p = buf;

    buf[length] = 0;
    while( *p ) {
        assert( p < (buf+length) );
        if ( *p == 0xa ) {
            // Newline character. No special rules for this. Append all the characters
            // since the last string, and include the newline.
            data.append( lastPos, (p-lastPos+1) );  // append, include the newline
            ++p;                                    // move past the newline
            lastPos = p;                            // and point to the new buffer (may be 0)
            assert( p <= (buf+length) );
        }
        else if ( *p == 0xd ) {
            // Carriage return. Append what we have so far, then
            // handle moving forward in the buffer.
            if ( (p-lastPos) > 0 ) {
                data.append( lastPos, p-lastPos );  // do not add the CR
            }
            data += (char)0xa;                      // a proper newline

            if ( *(p+1) == 0xa ) {
                // Carriage return - new line sequence
                p += 2;
                lastPos = p;
                assert( p <= (buf+length) );
            }
            else {
                // it was followed by something else...that is presumably characters again.
                ++p;
                lastPos = p;
                assert( p <= (buf+length) );
            }
        }
        else {
            ++p;
        }
    }
    // Handle any left over characters.
    if ( p-lastPos ) {
        data.append( lastPos, p-lastPos );
    }
    delete [] buf;
    buf = 0;

    Parse( data.c_str(), 0, encoding );

    if (  Error() )
    {
        return false;
    }

    return true;
}

传入一个buff,然后交给TineXml解析。

 

使用示例：

 TiXmlDocument* pXMLDoc = new TiXmlDocument( szSchemeName );

 unsigned long nLength = 0;
 char* pBuff = (char*)cocos2d::CCFileUtils::sharedFileUtils()->getFileData(cocos2d::CCFileUtils::sharedFileUtils()->fullPathFromRelativePath(szSchemeName),"rt", &nLength );

 pXMLDoc->LoadMemory( pBuff, nLength );

 SAFE_DELARR( pBuff );

 

.... 你的代码在这里

 

delete pXMLDoc;