Topic: NullReferenceException: Object reference not set to an instance [SOLVED] (Read 4353 times) Show
i have been working on Tutorial 12 - Connecting Scripts to Playmaker « Last Edit: February 14, 2020, 05:58:51 AM by jeanfabre » Hi, i am new to this however i am confused because i do believe i have a game object called GUIText_RandNum it is what the FSM is attached to « Last Edit: February 11, 2020, 01:36:21 AM by Rene » i got it to work however I am not sure i understand why it works... « Last Edit: February 11, 2020, 02:20:55 AM by Rene » i realize that using IMGUI is not really the best way to use buttons however to make this work i am not sure why i don't need to use the GetComponent I just tried making the playmakerFSM variable called RandNumFSM PRIVATE and and ran this code...and it still is broken...Making the variable private prevents me from manually hooking up the gameobject to the c# script from the inspector...it seems the only way to make this work is to manually hook up the gameobject (GUIText_RandNum) and to create the PlaymakerFSM variable as public... Hi. var _go = GameObject.Find("GUITEXT_RandNum") if(_go == null) { Debug.LogError("not object <GUITEXT_RandNum> found in the scene!"); }else{ RandNumFSM = RandNumFSM.GetComponent<PlayMakerFSM>(); if(RandNumFSM == null) { Debug.LogError("not playmakerFSM component found in the the object!",_go); } } when you use GameObject.Find() api, you must always check that the result is not null, cause in your case, it's likely that there are no objects named "GUITEXT_RandNum" in your scene. Hello Jean, Am I missing something? Finally Jean... Please forgive me but I finally discovered the mistake that I have been making and I do not have to send you my project! How do you fix object reference not set to an instance of an object?How to Avoid Object Reference Not Set to an Instance of an Object?. Explicitly check for null and ignore null values. ... . Explicitly check for null and provide a default value. ... . Explicitly check for null from method calls and throw a custom exception. ... . Use Debug.. What does it mean object reference not set to an instance of an object unity?Well the error "object reference not set to an instance of an object" means that you are trying to access something that is currently empty. To try and fix this first be sure that all of your variables have set values and are not null.
What causes object reference not set to an instance of an object?The message "object reference not set to an instance of an object" means that you are referring to an object the does not exist or was deleted or cleaned up. It's usually better to avoid a NullReferenceException than to handle it after it occurs.
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