File-based save system in Unity - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare the file path variable for saving data.

Unity

string filePath = Application.persistentDataPath + [1];

Drag options to blanks, or click blank then click option'

A"/savefile.json"

B"savefile.json"

C"/savefile"

D"savefile"

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the slash '/' before the file name.

The file path must include a slash before the file name to form a valid path.

2fill in blank

medium

Complete the code to write a JSON string to a file.

Unity

File.WriteAllText([1], jsonData);

Drag options to blanks, or click blank then click option'

AApplication.persistentDataPath

BjsonData

CfilePath

DsaveFile

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the data string instead of the file path.

The first argument to WriteAllText is the file path where data will be saved.

3fill in blank

hard

Fix the error in reading the file content into a string.

Unity

string jsonData = File.[1](filePath);

Drag options to blanks, or click blank then click option'

AReadFile

BReadText

CReadAllLines

DReadAllText

Attempts:

3 left

💡 Hint

Common Mistakes

Using ReadAllLines which returns a string array instead of a string.

Use ReadAllText to read the entire file content as a single string.

4fill in blank

hard

Fill both blanks to deserialize JSON data into a PlayerData object.

Unity

PlayerData player = JsonUtility.[1]<[2]>(jsonData);

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AFromJson

BToJson

CPlayerData

DSaveData

Attempts:

3 left

💡 Hint

Common Mistakes

Using ToJson which converts object to JSON string instead of the opposite.

Use FromJson to convert JSON string to an object of type PlayerData.

5fill in blank

hard

Fill all three blanks to save player score to a JSON file.

Unity

string jsonData = JsonUtility.[1](playerData);
File.[2]([3], jsonData);

Drag options to blanks, or click blank then click option'

AToJson

BWriteAllText

CfilePath

DReadAllText

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up ToJson and FromJson methods.

Using ReadAllText instead of WriteAllText for saving.

First convert the playerData object to JSON string using ToJson, then write it to the file path using WriteAllText.