Hello, I’ve been trying to store a Text from an input field and pass it to the main game scene, but it returns null.
When I start the game, the Player Name value is there:
But when I go to the Main scene, it is destroyed:
Nothing special about that! All the same rules apply, regardless of what you are doing.
The answer is always the same… ALWAYS. It is the single most common error ever.
Don’t waste your life spinning around and round on this error. Instead, learn how to fix it fast… it’s EASY!!
Some notes on how to fix a NullReferenceException error in Unity3D
The basic steps outlined above are:
Expect to see this error a LOT. It’s easily the most common thing to do when working. Learn how to fix it rapidly. It’s easy. See the above link for more tips.
You need to figure out HOW that variable is supposed to get its initial value. There are many ways in Unity. In order of likelihood, it might be ONE of the following:
This is the kind of mindset and thinking process you need to bring to this problem:
https://discussions.unity.com/t/814091/4
Step by step, break it down, find the problem.
Here is a clean analogy of the actual underlying problem of a null reference exception:
So, I read through the PLBM (what do these letters stand for anyway ?) page, and I was able to preserve the playerName variable by making it a child of the empty gameObj., which has a DontDestroyOnLoad function on it. However the game displays a “technical” name instead. If I try to follow the guide that you linked, I think my problem is in the “why is it not being set up?” step.
I suppose I need to rearrange my name displaying code, but I don’t know how:
Be sure to reason about what is the score (numeric) and what is the presentation text.
That name tells you what it is: you are printing an object of type UnityEngine.UI.Text
Do you perhaps instead mean to print the .text field of that object?
But even that seems weird: you probably want to be using the same approach that you use to make "Score: 0" and instead make "Best Score: 0" for your top score.
The way you are going at it above, it is going to read:
Best Score: Score: 0
Which I’m pretty sure is NOT what you want.
When I add .text to my variable, it displays nothing:
The script is like this:
My mind is foggy on this, I don’t know what I’m doing 
I DID IT !
It was a lot of trouble because I would lose motivation from time to time and was also busy IRL, but I completed the Scene Flow and Data Persistence tutorial ! It took me almost 4 months, but I did it damn it !
Data persistence between scenes (1 of 2). This video was particularly useful:
Data persistence between scenes (2 of 2)
I used the JSONUtility functions for data saving and loading. Aka Data persistence between sessions.
Save
Load
And I figured out how to display only the highest score !
Don’t lose hope people !
That is awesome. You really feel smart nailing stuff like this down. Glad to hear you stuck with it.
Hello there
How does it looks SaveData class ?
hi you can use this link. its my repo for this mission
https://github.com/DFazelpour/Data-Persistence-Project
