The field Application.persistentDataPath only contains a directory. This is set when the project starts and can only be used as part of the Initialization System within Unity as part of messages such as the method Awake() or Start() within a Scripting Component.Īpplication.persistentDataPath + "/gamedata.json" While a Unity project is running, it provides a field called Application.persistentDataPath set with the current “persistent” directory. When creating a new Scripting Component in Unity, the namespace will need to be added. Note: File is part of the System.IO namespace, a collection of classes and methods connected to working with input (“I”) and output (“O”). As the action of needing to read text files is a common one, C# provides two useful methods for working with them as part of File class: ReadAllText()and WriteAllText().
The C# class File provides methods for accessing files without knowing if the files are locally or remotely saved. Like BinaryFormatter, the class JsonUtility can be combined with other classes like File to read and write files, but also comes with the same warning: files on a user’s system, because they can be edited by the user, system, or other processes, should not be considered trusted sources. These provide a way to “serialize” and “deserialize” to and from JSON based on simple data structures in C#.
Unity provides the class JsonUtility and static methods for working with JSON.
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