PlayerPrefs.DeleteAll

Description

Removes all keys and values from the preferences. Use with caution.

Call this function in a script to delete all current settings in the PlayerPrefs. Any values or keys have previously been set up are then reset. Be careful when using this.

no example available in JavaScript

//This example creates a button on the screen that if pressed, deletes any PlayerPrefs settings.
//You must set values or keys in the PlayerPrefs first to see this in action.

using UnityEngine;

public class Example : MonoBehaviour
{
    void OnGUI()
    {
        //Delete all of the PlayerPrefs settings by pressing this Button
        if (GUI.Button(new Rect(100, 200, 200, 60), "Delete"))
        {
            PlayerPrefs.DeleteAll();
        }
    }
}

Below is a larger example that sets up the PlayerPrefs as well as including deletion of the settings.

no example available in JavaScript

//First attach this script to a GameObject in the Scene to set up the PlayerPrefs.

using UnityEngine;
using UnityEngine.SceneManagement;

public class SetUpPlayerPrefsExample : MonoBehaviour
{
    string m_PlayerName;

    void Start()
    {
        m_PlayerName = "Enter Your Name";
    }

    void Update()
    {
        //Give the PlayerPrefs some values to send over to the next Scene
        PlayerPrefs.SetFloat("Health", 50.0F);
        PlayerPrefs.SetInt("Score", 20);
        PlayerPrefs.SetString("Name", m_PlayerName);
    }

    void OnGUI()
    {
        //Create a Text Field where the user inputs their name
        m_PlayerName = GUI.TextField(new Rect(10, 10, 200, 20), m_PlayerName, 25);

        //Create a button which loads the appropriate level when you press it
        if (GUI.Button(new Rect(10, 30, 200, 60), "Next Scene"))
        {
            SceneManager.LoadScene("Scene2");
        }
    }
}

no example available in JavaScript

//This other script shows how the values of the PlayerPrefs reset using the PlayerPrefs.DeleteAll() function.
//Open a different Scene (the one you named before- "Scene2") and attach this script to a new GameObject.
//Use this script to fetch the settings and show them as text on the screen.
//Use the button included in the script to delete all these settings and the text on the screen will also reset to reflect this.

using UnityEngine;
using UnityEngine.UI;

public class PlayerPrefsDeleteAllExample : MonoBehaviour
{
    float m_Score;
    int m_Health;
    string m_PlayerName;

    void Start()
    {
        //Fetch the PlayerPref settings
        SetText();
    }

    void SetText()
    {
        //Fetch the score, health and name from the PlayerPrefs (set these Playerprefs in another script)
        m_Score = PlayerPrefs.GetFloat("Health", 0);
        m_Health = PlayerPrefs.GetInt("Score", 0);
        m_PlayerName = PlayerPrefs.GetString("Name", "No Name");
    }

    void OnGUI()
    {
        //Fetch the PlayerPrefs settings and output them to the screen using Labels
        GUI.Label(new Rect(50, 50, 200, 30), "Name : " + m_PlayerName);
        GUI.Label(new Rect(50, 90, 200, 30), "Health : " + m_Health);
        GUI.Label(new Rect(50, 130, 200, 30), "Score : " + m_Score);

        //Delete all of the PlayerPrefs settings by pressing this Button
        if (GUI.Button(new Rect(50, 0, 100, 30), "Delete"))
        {
            PlayerPrefs.DeleteAll();
            //Fetch the updated settings to change the Text
            SetText();
        }
    }
}