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Question by jmmcdevt · Dec 07, 2020 at 08:33 PM · c#androiderror

FindGameObjectWithTag not working after APK build

My game is working fine during my test in the Unity Editor.

After building the apk and installing on my phone, I am getting :

NullReferenceException: Object reference not set to an instance of an object

It seems that the GameObject.FindGameObjectWithTag was not able to get the "Player" tag. Im not quite sure as I am just new to Unity and game development.


Below is my code including the Debug.Log from Unity Console and ADB. Appreciate the help

 void Start()
     {
         player = GameObject.FindGameObjectWithTag("Player").GetComponent<PlayerMovement>();
         isGameStarted = false;
         IsDead = false;
 
         Debug.Log(player);
     }


Console:

 Player (PlayerMovement)
 UnityEngine.Debug:Log(Object)
 GameManager:Start() (at Assets/Scripts/GameManager.cs:67)

ADB:

 12-08 00:30:32.054  2226  6891 I Unity   : Null
 12-08 00:30:32.054  2226  6891 I Unity   : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
 12-08 00:30:32.054  2226  6891 I Unity   :
 12-08 00:30:32.347  2226  6891 E Unity   : NullReferenceException: Object reference not set to an instance of an object
 12-08 00:30:32.347  2226  6891 E Unity   :   at GameManager.Start () [0x0003a] in <0eceeb3a1845417d9269f1499c75c894>:0
 12-08 00:30:32.347  2226  6891 E Unity   :
 12-08 00:30:32.347  2226  6891 E Unity   : (Filename: <0eceeb3a1845417d9269f1499c75c894> Line: 0)
 12-08 00:30:32.347  2226  6891 E Unity   :
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Answer by jmmcdevt · Dec 08, 2020 at 03:58 PM

Nevermind, it worked after I changed the tag from "Player" to something else. I am not quite sure why it wasn't able to pickup the "Player" tag when it is installed on my phone.

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