Cocos2d-x3.0 File Processing

1. Read content from the file

Auto sharedFileUtils = FileUtils: getInstance (); std: string ret; sharedFileUtils-> purgeCachedEntries (); std: vector
 
  
SearchPaths = sharedFileUtils-> getSearchPaths (); searchPaths. insert (searchPaths. begin (), "Misc"); sharedFileUtils-> setSearchPaths (searchPaths); std: vector
  
   
ResolutionsOrder = sharedFileUtils-> getSearchResolutionsOrder (); resolutionsOrder. insert (resolutionsOrder. begin (), "resources-ipadhd"); resolutionsOrder. insert (resolutionsOrder. begin () + 1, "resources-ipad"); resolutionsOrder. insert (resolutionsOrder. begin () + 2, "resources-widehd"); resolutionsOrder. insert (resolutionsOrder. begin () + 3, "resources-wide"); resolutionsOrder. insert (resolutionsOrder. begin () + 4, "resources-hd"); resolutionsOrder. insert (resolutionsOrder. begin () + 5, "resources-iphone"); sharedFileUtils-> setSearchResolutionsOrder (resolutionsOrder); for (int I = 1; I <7; I ++) {auto filename = StringUtils: format ("test2.16d.txt", I); // obtain the file path ret = sharedFileUtils-> fullPathForFilename (filename. c_str (); // obtain the string std: string st = FileUtils: getInstance ()-> getStringFromFile (filename ); log ("% s-> % s", filename. c_str (), st. c_str ());}
  
 

Write and read locally

Auto sharedFileUtils = FileUtils: getInstance (); std: string ret; sharedFileUtils-> purgeCachedEntries (); std: vector
 
  
SearchPaths = sharedFileUtils-> getSearchPaths (); std: string writablePath = sharedFileUtils-> getWritablePath (); std: string fileName = writablePath + "external1.txt "; char szBuf [100] = "Hello Cocos2d-xrewrwe! ";/* Write to local */FILE * fp = fopen (fileName. c_str (), "wb"); if (fp) {size_t ret = fwrite (szBuf, 1, strlen (szBuf), fp); CCASSERT (ret! = 0, "fwrite function returned zero value"); fclose (fp); if (ret! = 0) log ("Writing file to writable path succeed. ");} /*********************************/searchPaths. insert (searchPaths. begin (), writablePath); sharedFileUtils-> setSearchPaths (searchPaths); // Get external.txt from writable path std: string fullPath = sharedFileUtils-> fullPathForFilename ("external1.txt "); log ("external file path = % s", fullPath. c_str ();/* read the file */if (fullPath. length ()> 0) {fp = fopen (fullPath. c_str (), "rb"); if (fp) {char szReadBuf [100] = {0}; size_t read = fread (szReadBuf, 1, strlen (szBuf ), fp); if (read> 0) log ("The content of file from writable path: % s", szReadBuf); fclose (fp );}}
 

Determine whether a file exists

Auto s = Director: getInstance ()-> getWinSize (); auto sharedFileUtils = FileUtils: getInstance (); Label * pTTF; bool isExist = false; // determine whether the file exists isExist = sharedFileUtils-> isFileExist ("grossini.png"); pTTF = Label: createWithSystemFont (isExist? "Images/grossini.png exists": "Images/grossini.png doesn't exist", "", 20); pTTF-> setPosition (Point (s. width/2, s. height/2); this-> addChild (pTTF );

auto s = Director::getInstance()->getWinSize();        auto sharedFileUtils = FileUtils::getInstance();                        ValueMap dict;        dict["grossini.bmp"] = Value("grossini.png");        dict["grossini.xcf"] = Value("grossini.png");                sharedFileUtils->setFilenameLookupDictionary(dict);        auto sprite = Sprite::create("grossini.bmp");        this->addChild(sprite);                sprite->setPosition(Point(s.width / 2, s.height / 2));