Search Unity

  1. Welcome to the Unity Forums! Please take the time to read our Code of Conduct to familiarize yourself with the forum rules and how to post constructively.
  2. We have updated the language to the Editor Terms based on feedback from our employees and community. Learn more.
    Dismiss Notice
  3. Join us on November 16th, 2023, between 1 pm and 9 pm CET for Ask the Experts Online on Discord and on Unity Discussions.
    Dismiss Notice

Question SetActive not work on device

Discussion in 'Scripting' started by gaishinbu, Sep 18, 2022.

  1. gaishinbu

    gaishinbu

    Joined:
    Oct 10, 2015
    Posts:
    64
    My code is;

    Code (CSharp):
    1.  
    2. void Start()
    3.     {
    4.         stats_Panel.SetActive(false);
    5.     }
    6.  
    This code works in Unity. But when I take it as apk and throw it on the phone, it doesn't work. Where could the problem be?
     
  2. Kurt-Dekker

    Kurt-Dekker

    Joined:
    Mar 16, 2013
    Posts:
    36,797
    You must find a way to get the information you need in order to reason about what the problem is.

    What is often happening in these cases is one of the following:

    - the code you think is executing is not actually executing at all
    - the code is executing far EARLIER or LATER than you think
    - the code is executing far LESS OFTEN than you think
    - the code is executing far MORE OFTEN than you think
    - the code is executing on another GameObject than you think it is
    - you're getting an error or warning and you haven't noticed it in the console window

    To help gain more insight into your problem, I recommend liberally sprinkling
    Debug.Log()
    statements through your code to display information in realtime.

    Doing this should help you answer these types of questions:

    - is this code even running? which parts are running? how often does it run? what order does it run in?
    - what are the values of the variables involved? Are they initialized? Are the values reasonable?
    - are you meeting ALL the requirements to receive callbacks such as triggers / colliders (review the documentation)

    Knowing this information will help you reason about the behavior you are seeing.

    You can also supply a second argument to Debug.Log() and when you click the message, it will highlight the object in scene, such as
    Debug.Log("Problem!",this);


    If your problem would benefit from in-scene or in-game visualization, Debug.DrawRay() or Debug.DrawLine() can help you visualize things like rays (used in raycasting) or distances.

    You can also call Debug.Break() to pause the Editor when certain interesting pieces of code run, and then study the scene manually, looking for all the parts, where they are, what scripts are on them, etc.

    You can also call GameObject.CreatePrimitive() to emplace debug-marker-ish objects in the scene at runtime.

    You could also just display various important quantities in UI Text elements to watch them change as you play the game.

    If you are running a mobile device you can also view the console output. Google for how on your particular mobile target, such as this answer or iOS: https://forum.unity.com/threads/how-to-capturing-device-logs-on-ios.529920/ or this answer for Android: https://forum.unity.com/threads/how-to-capturing-device-logs-on-android.528680/

    Another useful approach is to temporarily strip out everything besides what is necessary to prove your issue. This can simplify and isolate compounding effects of other items in your scene or prefab.

    Here's an example of putting in a laser-focused Debug.Log() and how that can save you a TON of time wallowing around speculating what might be going wrong:

    https://forum.unity.com/threads/coroutine-missing-hint-and-error.1103197/#post-7100494

    When in doubt, print it out!(tm)

    Note: the
    print()
    function is an alias for Debug.Log() provided by the MonoBehaviour class.
     
  3. gaishinbu

    gaishinbu

    Joined:
    Oct 10, 2015
    Posts:
    64
    I'm going to try this because that's the only thing I haven't done. I already checked all of your other suggestions. Thank you. I will share the result.
     
  4. gaishinbu

    gaishinbu

    Joined:
    Oct 10, 2015
    Posts:
    64
    @Kurt-Dekker

    I did what you said. This is the error I get.


    09-19 21:02:07.214 8464 8477 I Unity : stat panel setactive
    09-19 21:02:07.214 8464 8477 I Unity : ShowMyStatsControl:Start()
    09-19 21:02:07.214 8464 8477 I Unity :
    09-19 21:02:07.225 8464 8477 E Unity : NullReferenceException: Object reference not set to an instance of an object.
    09-19 21:02:07.225 8464 8477 E Unity : at MovePlayer.Update () [0x00000] in <00000000000000000000000000000000>:0
    09-19 21:02:07.225 8464 8477 E Unity :
    09-19 21:02:07.314 8464 8477 E Unity : NullReferenceException: Object reference not set to an instance of an object.
    09-19 21:02:07.314 8464 8477 E Unity : at MovePlayer.Update () [0x00000] in <00000000000000000000000000000000>:0
    09-19 21:02:07.314 8464 8477 E Unity :
    09-19 21:02:07.351 8464 8477 E Unity : NullReferenceException: Object reference not set to an instance of an object.
    09-19 21:02:07.351 8464 8477 E Unity : at MovePlayer.Update () [0x00000] in <00000000000000000000000000000000>:0
    09-19 21:02:07.351 8464 8477 E Unity :
    .
    .// some more of the same lines
    .
    09-19 21:02:09.183 8464 8477 E Unity :
    09-19 21:02:09.218 8464 8477 E Unity : NullReferenceException: Object reference not set to an instance of an object.
    09-19 21:02:09.218 8464 8477 E Unity : at MovePlayer.Update () [0x00000] in <00000000000000000000000000000000>:0
    09-19 21:02:09.218 8464 8477 E Unity :
    09-19 21:02:09.250 8464 8464 D View : Touch up dispatch to com.unity3d.player.UnityPlayer{d649921 V.E...... ......I. 0,0-1080,1920}, event = MotionEvent { action=ACTION_UP, actionButton=0, id[0]=0, x[0]=207.80759, y[0]=1471.2336, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=300032914, downTime=300032805, deviceId=9, source=0x1002 }

    But there is nothing about "stats_Panel" in the mentioned "MovePlayer" script. What should I do now?