cocos2dx如何读取xml

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    原文地址：http://blog.csdn.net/comeontom/article/details/7933692】

这些天被cocos2dx如何读取xml困惑着，现在总结总结，如有错误，欢迎指正！

先新建一个cocos2dx的工程

HelloWorldScene.cpp中的代码如下：

 #include "HelloWorldScene.h"

 using namespace cocos2d;

 CCScene* HelloWorld::scene()
 {
     CCScene * scene = NULL;
     do
     {
         // 'scene' is an autorelease object
         scene = CCScene::create();
         CC_BREAK_IF(! scene);

         // 'layer' is an autorelease object
         HelloWorld *layer = HelloWorld::create();
         CC_BREAK_IF(! layer);

         // add layer as a child to scene
         scene->addChild(layer);
     } while (0);

     // return the scene
     return scene;
 }

 // on "init" you need to initialize your instance
 bool HelloWorld::init()
 {
     bool bRet = false;
     do
     {
         //////////////////////////////////////////////////////////////////////////
         // super init first
         //////////////////////////////////////////////////////////////////////////

         CC_BREAK_IF(! CCLayer::init());

         //////////////////////////////////////////////////////////////////////////
         // add your codes below...
         //////////////////////////////////////////////////////////////////////////

         // 1. Add a menu item with "X" image, which is clicked to quit the program.

         // Create a "close" menu item with close icon, it's an auto release object.
         CCMenuItemImage *pCloseItem = CCMenuItemImage::create(
             "CloseNormal.png",
             "CloseSelected.png",
             this,
             menu_selector(HelloWorld::menuCloseCallback));
         CC_BREAK_IF(! pCloseItem);

         // Place the menu item bottom-right conner.
         pCloseItem->setPosition(ccp(CCDirector::sharedDirector()->getWinSize().width - 20, 20));

         // Create a menu with the "close" menu item, it's an auto release object.
         CCMenu* pMenu = CCMenu::create(pCloseItem, NULL);
         pMenu->setPosition(CCPointZero);
         CC_BREAK_IF(! pMenu);

         // Add the menu to HelloWorld layer as a child layer.
         this->addChild(pMenu, 1);

         // 2. Add a label shows "Hello World".

         // Create a label and initialize with string "Hello World".

         //最外面的 CCDictionary
         CCDictionary* pDict = CCDictionary::createWithContentsOfFile("strings.xml");

         //第二层 CCDictionary
         CCDictionary* pDict_2 = new CCDictionary();
         pDict_2->retain();
         pDict_2 = (CCDictionary*)pDict->objectForKey("special");
         /*
         如果在同一个key下面存在<string>hhhhh</string>
                                <string>comeontom</string>
                                <true></true>
         这些关键词，则输出最后一个
         */
         CCLOG("pDict_2:%s",((CCString*)pDict_2->valueForKey("special_1"))->getCString());

         /*第三层  下面说的是Array中包含string
         <key>special_2</key>
         <array>
             <string>comeontom1</string>
             <string>comeontom2</string>
             <string>comeontom3</string>
         </array>
         */
         CCArray* pArray2 = new CCArray();
         pArray2->retain();
         pArray2 = (CCArray*)pDict_2->objectForKey("special_2");
         for (int i = 0;i < pArray2->count();i++)
         {
             CCLOG("pArray2%i:%s",i+1,((CCString*)pArray2->objectAtIndex(i))->getCString());
         }

         /*第三层  下面说的是Array中包含string
         <key>special_3</key>
         <array>
             <integer>45.0</integer>
             <integer>3</integer>
             <integer>43.444</integer>
         </array>
         */
         CCArray* pArray3 = new CCArray();
         pArray3->retain();
         pArray3 = (CCArray*)pDict_2->objectForKey("special_3");
         for (int i = 0;i < pArray3->count();i++)
         {
             CCLOG("pArray3%i:%s",i+1,((CCString*)pArray3->objectAtIndex(i))->getCString());
         }
         /*第三层
         <key>special_4</key>
         <real>多媒体</real>
         */
         CCLOG("pDict_2:%s",((CCString*)pDict_2->valueForKey("special_4"))->getCString());
         /*第三层
         <key>special_5</key>
         <false></false>
         */
         CCLOG("pDict_2:%s",((CCString*)pDict_2->valueForKey("special_5"))->getCString());



         CCLOG("strings.xmlCounts:%d",pDict->count());
         CCLOG("pDict:%s",pDict);
         CCArray* pArray = new CCArray();
         pArray = pDict->allKeys();//把所有的键值付给pArray
         for (int i = 0;i < pArray->count();i++)
         {
             CCLOG("pArray%i:%s",i+1,((CCString*)pArray->objectAtIndex(i))->getCString());
         }


         CCLabelTTF* pLabel = CCLabelTTF::create(((CCString*)pDict->objectForKey("chinese1"))->getCString(), "Arial", 24);
         /*CCLabelTTF* pLabel = CCLabelTTF::create(((CCString*)pArray->objectAtIndex(3))->getCString(), "Arial", 24);*/

        // CCLabelTTF* pLabel = CCLabelTTF::create("Hello World", "Arial", 24);
         CC_BREAK_IF(! pLabel);

         // Get window size and place the label upper.
         CCSize size = CCDirector::sharedDirector()->getWinSize();
         pLabel->setPosition(ccp(size.width / 2, size.height - 50));

         // Add the label to HelloWorld layer as a child layer.
         this->addChild(pLabel, 1);

         // 3. Add add a splash screen, show the cocos2d splash image.
         CCSprite* pSprite = CCSprite::create("HelloWorld.png");
         CC_BREAK_IF(! pSprite);

         // Place the sprite on the center of the screen
         pSprite->setPosition(ccp(size.width/2, size.height/2));

         // Add the sprite to HelloWorld layer as a child layer.
         this->addChild(pSprite, 0);

         bRet = true;
     } while (0);

     return bRet;
 }

 void HelloWorld::menuCloseCallback(CCObject* pSender)
 {
     // "close" menu item clicked
     CCDirector::sharedDirector()->end();
 }

strings.xml代码如下：

 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
   <key>special</key>
   <string>
     <dict>
         <key>special_1</key>
         <string>hhhhh</string>
         <string>comeontom</string>
         <true></true>
         <key>special_2</key>
         <array>
             <string>comeontom1</string>
             <string>comeontom2</string>
             <string>comeontom3</string>
         </array>
         <key>special_3</key>
         <array>
             <integer>45.0</integer>
             <integer>3</integer>
             <integer>43.444</integer>
         </array>
         <key>special_4</key>
         <real>多媒体</real>
         <key>special_5</key>
         <false></false>
     </dict>
   </string>
     <key>chinese1</key>
     <string>美好的一天</string>
     <key>japanese</key>
     <string>良い一日を</string>
     <key>spanish</key>
     <string>Buen día</string>
 </dict>
 </plist>

最后来个总结：

dict:建立字典
key：字典里面的关键词
integer：整形，其实和string、real的功能差不多，起配对作用
real：和integer、string的功能差不多，起配对作用
true：<true></true>如果这样写，输出的是1
false：<false></false> 输出的是0
string：和integer、real的功能差不多，起配对作用
array：建立数组

当然了，有兴趣看源码的同学，可以看这个文件：CCFileUtilsCommon_cpp.h（位置：cocos2dx\platform）