Singleton instance is null

ViewportToWorldPoint new Vector3 1 , 0 , cam. ViewportToWorldPoint new Vector3 1 , 1 , cam. ViewportToWorldPoint new Vector3 0 , 1 , cam. OnDisable" ;. Log "I started the update function in singleton script" ;. Log "I completed the update function in singleton script" ;. OnDestroy" ;. Save ;. Log "I saved from singleton. Start" ;. Log "The singleton saved the values of the variables" ;. Create Application. Serialize file, data ;. Close ;. Exists Application. Open Application. Open ;. Deserialize file ;.

Log "The singleton loaded the values of the variables" ;. Joined: Nov 9, Posts: 2, Suddoha , Oct 27, Actually it's not singleton. Way after the start of the scene. For no apparent reason.

I also thought about the order of script execution. The thing is that singleton is the only one that has something in the "awake" function, all the other scripts have nothing before "Start", so I ruled out this possibility. Suddoha : Thank you for the reply. Asked 6 years, 8 months ago. Active 6 years, 8 months ago. Viewed 1k times. Brian Rasmussen k 34 34 gold badges silver badges bronze badges.

The instance field will be null the first time the property is called. You may be touching the property with the debugger and it is running the code and creating the instance. Add a comment. Active Oldest Votes. Reed Copsey Reed Copsey k 72 72 gold badges silver badges bronze badges.

I'm afraid it was something of a red herring. There was a property in my object which remained uninitialised. I'll mark your answer as correct as it points to a better solution.

Sign up or log in Sign up using Google. This causes issue as we are getting a new instance and defeating the purpose of the Singleton. We can handle this by implementing the readResolve. In this article, we look at the Singleton Design Pattern with its use cases. We covered some of the benefit and drawbacks of using this design pattern. In the last part, we talked about when to use this design pattern in the real-life scenario.

This site uses Akismet to reduce spam. Learn how your comment data is processed. Singleton Design Pattern ensures that there is only one instance for this class. This is very useful with shared resources. Most times, people also call this pattern as singleton as short form. Single-Threaded environment. Multi-Threaded environment. Singleton Pattern with Single-Threaded Environment For single-threaded applications, we will have to do: Create a private static instance of the Singleton class.

Keep the constructor private. Create a private static getInstance method to return the same object always.