Unity application class and data file path

Application Class static properties and static methods ：

Static attribute （Static Variables）

Static attribute	English explanation	English description
string dataPath	Contains the path to the game data folder (Read Only).	Game data path
string persistentDataPath	Contains the path to a persistent data directory (Read Only).	Persistent data path .
string streamingAssetsPath	Contains the path to the StreamingAssets folder (Read Only).	Stream data cache directory .
string temporaryCachePath	Contains the path to a temporary data / cache directory (Read Only).	Zero time cache directory .
int levelCount	The total number of levels available (Read Only).	Total number of scenarios .
int loadedLevel	The level index that was last loaded (Read Only).	Sequence number of the currently loaded scene
int loadedLevelName	The name of the level that was last loaded (Read Only).	The name of the currently loaded scene .
bool isLoadingLevel	Is some level being loaded? (Read Only). isLoadingLevel returns true if a level load was requested this frame already.	Indicates whether the currently loaded scene still needs the current frame .
NetworkReachability internetReachability	Returns the type of Internet reachability currently possible on the device.	Indicates the network connection mode of the current device .
RuntimePlatform platform	Returns the platform the game is running (Read Only).	Indicates the platform on which the current game is running .
bool isConsolePlatform	Is the current Runtime platform a known console platform.	Indicates whether the currently running platform is a console .
bool isMobilePlatform	Is the current Runtime platform a known mobile platform.	Whether the currently running platform is a mobile platform .
bool isWebPlayer	Are we running inside a web player? (Read Only).	Whether the currently running platform is web platform .
bool isEditor	Are we running inside the Unity editor? (Read Only).	Indicates whether you are currently in Unity Run the program in the editor environment .
int targetFrameRate	Instructs game to try to render at a specified frame rate.	Frame rate .
ThreadPriority　backgroundLoadingPriority	Priority of background loading thread.	Indicates the background load priority .
string bundleIdentifier	eturns application bundle identifier at runtime.	Represents the identifier of the application runtime .
string cloudProjectId	A unique cloud project identifier. It is unique for every project (Read Only).	Unique identifier of the cloud application .
string companyName	Return application company name (Read Only).	Applied company name .
ApplicationInstallMode installMode	Returns application install mode (Read Only).	Apply installation mode .
bool runInBackground	Should the player be running when the application is in the background?	Whether the application is running in the background .
ApplicationSandboxType sandboxType	Returns application running in sandbox (Read Only).	The type of sandbox the application runs .
string srcValue	The path to the web player data file relative to the html file (Read Only).	web player Path to file .
int streamedBytes	How many bytes have we downloaded from the main unity web stream (Read Only).	Number of byte streams .
SystemLanguage systemLanguage	How many bytes have we downloaded from the main unity web stream (Read Only).	Current system language .
string unityVersion	The version of the Unity runtime used to play the content.	Unity Version of .
string version	Returns application version number (Read Only).	Application version .
int webSecurityEnabled	Indicates whether Unity's webplayer security model is enabled.	unity Of webplayer Whether the security mode of is enabled .
string absoluteURL	The absolute path to the web player data file (Read Only).	Used to keep in web The absolute path of the data file in the browser .
bool genuine	Returns false if application is altered in any way after it was built.
bool genuineCheckAvailable	Contains the path to the game data folder (Read Only).
ApplicationInstallMode installMode	Returns application install mode (Read Only).	Apply installation mode .

Static methods （Static Functions）

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Static methods	English explanation	English description
void LoadLevel(int index); void LoadLevel(string name);	Loads the level by its name or index.	Load the scene according to the scene name and index number
void LoadLevelAdditive(int index);void LoadLevelAdditive(string name);	Loads a level additively.	Load the scene according to the scene name and index number , But the objects in the current scene are not destroyed
AsyncOperation LoadLevelAsync(int index); AsyncOperation LoadLevelAsync(string levelName);	Loads the level asynchronously in the background.	Loading scenarios asynchronously
AsyncOperation LoadLevelAdditiveAsync(int index); AsyncOperation LoadLevelAdditiveAsync(string levelName);	Loads the level additively and asynchronously in the background.	Loading scenarios asynchronously , And the current object is not destroyed
void Quit();	Quits the player application.	Quit the game
void CancelQuit();	Cancels quitting the application. This is useful for showing a splash screen at the end of a game.	Cancel application exit .
bool CanStreamedLevelBeLoaded(int levelIndex);	Can the streamed level be loaded?	Get the current levelindex Whether the scene is loaded .
void CaptureScreenshot(string filename, int superSize = 0);	Captures a screenshot at path filename as a PNG file.	screenshots .
void OpenURL(string url);	Opens the url in a browser.	Visit the web address in the browser
AsyncOperation RequestUserAuthorization(UserAuthorization mode);	Request authorization to use the webcam or microphone in the Web Player.	Request permission
void ExternalCall(string functionName, params object[] args);	alls a function in the containing web page (Web Player only).	stay webplayer A call to a javaScrip function .
void ExternalEval(string script);	Evaluates script snippet in the containing web page (Web Player only).	stay webplayer On the implementation javascrip fragment .
float GetStreamProgressForLevel(int levelIndex);	How far has the download progressed? [0...1].	Download progress .
bool HasUserAuthorization(UserAuthorization mode);	pCheck if the user has authorized use of the webcam or microphone in the Web Player.	Check whether the user has webcam And mobile phones webpalyer Authority .

Link to the above table source ：http://www.jianshu.com/p/617789c9919a

Data file path , There are four attributes , Respectively ：dataPath、persistentDataPath、streamingAssetsPath、 temporaryCachePath.

1. dataPaht Is the path to the folder containing game data , Permission is read-only , Back to a Relative paths , That is, the return path is different for different game platforms . Be careful ：Application.dataPath The returned path Directory , The mobile terminal has no access rights （ You cannot access this directory ）.
2. persistentDataPaht What is returned is a persistent data store directory , Permission is read-only , stay The same platform , Unused applications access this property Same return value , But different platforms are different . When an application is published to IOS and Android In the platform , This path will point to a public path , And the data here will not be cleared every time the application is updated .

   Be careful ： This path is special , This path is readable and writable . And in IOS This is the sandbox of the application , But in Android It can be the sandbox of the program , It can also be SDCard. And in Android When it comes to packaging and Publishing ,PlayerSetting Set in the Write Access Options , The path of sandbox can be set SDCard, By default Internal Only Sandbox . The characteristics of this path ：

   • The content is readable and writable , However, it can only be written or read at runtime . It is not feasible to store data in this path in advance .
   • No content restrictions . You can start your StreamingAsset Read binaries from or from AssetBundle Read the file to write PersistentDataPath in .
   • Written documents , You can view it on your computer . It can also be removed .
3. streamingAssetsPath What is returned is the cache directory of the stream data , The return path is a relative path, which is suitable for storing some external data files .
4. temporaryCachePath Return a temporary data cache directory ( read-only ), The return value of this property accessed by the same platform without application is the same , Different platforms have different return values .
   
   summary ：dataPath and stremingAssetsPath Is relative to the installation directory of the program , Is a relative path . It is very suitable for the migration platform to set the external data file reading path . and persistentDataPath and temporaryCachePath The fixed position of the platform where the returned program is located . It is applicable to the storage of some data during the operation of the program .

   
   Source link ：http://www.jianshu.com/p/bbc2690bce30
   

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