SetActive not work on device

[gaishinbu]

My code is;

void Start()
    {
        stats_Panel.SetActive(false);
    }

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?

[Kurt-Dekker]

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: How To - Capturing Device Logs on iOS or this answer for Android: How To - Capturing Device Logs on Android

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:

Coroutine missing hint and error

This is so unnecessary. Use the beauty and power of instantly and immediately putting a Debug.Log() statement into the very start of the coroutine, right at the top. Do this always at the very first sign of trouble or question in your mind. The instant you did this you would see “Oh man, this code is simply not getting run!” And you could LASER-FOCUS 100% your efforts on studying what you expect to run it, eg., the call location, and isolate why it is not running. You would look at literall…

When in doubt, print it out!™

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

[gaishinbu]

@Kurt-Dekker

If you are running a mobile device you can also view the console output.

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.

[gaishinbu]

@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?