PlayerPrefs defaulting to 0

Questions & Answers
1

Hi Guys, I can’t seem to fix this simple problem. When testing in editor or running a build for the first time, the music volume and SFX volume keeps defaulting to 0. This is my code. Am I doing something wrong?

function Start() {
	//Set SFX and Music Sliders to correct positions.
	if(!PlayerPrefs.HasKey("musicVolume")) PlayerPrefs.SetFloat("musicVolume",1);
	if(!PlayerPrefs.HasKey("sfxVolume")) PlayerPrefs.SetFloat("sfxVolume",1);
	var setMusicVolume = GameObject.Find("MusicSlider").GetComponent(UnityEngine.UI.Slider);
	setMusicVolume.value = PlayerPrefs.GetFloat("musicVolume");
	var setSfxVolume = GameObject.Find("SfxSlider").GetComponent(UnityEngine.UI.Slider);
	setSfxVolume.value = PlayerPrefs.GetFloat("sfxVolume");

}

4

I had a problem like this because the slider’s On Value Changed was set to “Editor and Runtime”.

What happened was this; after playing the scene the editor would display the slider in the scene window with a value of 0. This triggered my On Value changed handler (nb: Editor and Runtime) which would then save the editor’s 0 value for the slider into the player prefs.

Fix: Set the slider’s On Value Change to Runtime Only.

I discovered this by using logging. The value 0 was always saved to player prefs when I stopped running the game to return to the editor.

3

if(!PlayerPrefs.HasKey(“sfxVolume”)) PlayerPrefs.SetFloat(“sfxVolume”,1);
This will only set the float to 1 if the key does not exist. If the key exists (if you set it to 0 some time ago for example), it will do nothing.

setSfxVolume.value = PlayerPrefs.GetFloat("sfxVolume");

This will get the value, which was previously stored as 0.

You can clear playerprefs with DeleteKey or DeleteAll.

A nicer way to specify a default value, is to provide one when calling GetFloat.

setSfxVolume.value = PlayerPrefs.GetFloat("sfxVolume", 1);

Note that it’ll still return 0 until you delete the previous value you stored there.

5

So it turns out the problem was with the editor. Finding and deleting the player prefs file fixed this issue for me.

2

It might be that you’re passing an integer; try passing 1f or 1.0 to SetFloat.