Assigning public static function to onClick button UI

I tried to call a public static function from my script but after selecting in the editor combo box it always said that the function is missing



is it possible to call a public static function from a UI button?

 

I do not believe the inspector allows configuring static methods, no.

You can add them in code, since really the 'AddListener' method just takes a delegate.

But the inspector is reflecting out that information, and probably only accepts instance scoped methods. Which would make sense, since you're referencing an instance, and not a class.

 

I found a work around to this that kind of simulates static methods:

Add your script onto a gameobject and make it a prefab. Now you can select the prefab in your button onclick and it will work just fine but you still need to use non static methods.

I really don't understand though why, even today, those static functions are not supported. Would seem like a no-brainer to me.

 

thank you very much Untherow, i've always been making 2 of the same function cause of this
I didn't know we can call function from a prefab, this will really help
you solved my 3 years problem lol

 

wrap the static method inside a non static method... yeah it's it's......

ex:

static void doIt(){
//things to be done.
}

//Call this...
void doItWrapper(){
doIt();
}

I use this method in my games.
https://play.google.com/store/apps/details?id=com.niz.colorcheckpoint

 

I like static methods for things like settings. Because Onclick() only accepts public methods, I have a static class for a class. You might want to use singleton for this though. You can use this along with the prefab method Untherow suggested.
ex)

public class LevelManager{

public static LevelManger levelManger;
void Start(){

if(levelManager){

Destroy(this);​

}
else{

levelManager = this;​

}​

}

public void LoadLevel(){ .... }​

}

Then you can use loadlevel in other scripts as
LevelManager.levelManager.LoadLevel();
and if you attatch the levelmanager script to a prefab, you can use Onclick() to call loadlevel without having an object in the hierarchy. I hope it helps to the future googlers

 

This works like a charm... Thanks!

 

Just to add to e5me's response. If your prefab is a prefab that has the DontDestroyOnLoad method in it (think of Brackey's AudioManager) yet you still want to call some methods from the Inspector and the Event Triggers, you can modify the prefab's methods to check if the method being called is from the original instance or a new one. If it's not the original, call the instance.

Code (CSharp):

1. public class LevelManager
2. {
3.     public static LevelManger instance;
4.  
5.     private void Start()
6.     {
7.         if (levelManager)
8.             Destroy(this);
9.         else
10.             levelManager = this;
11.     }
12.  
13.     public void LoadLevel()
14.     {
15.         if (instance == this)
16.         {
17.             // Do original code
18.         }
19.         else
20.             instance.LoadLevel();
21.     }
22. }

Afterwards, have your button.hover or button.click call the prefab's public method. It will use the instance instead of the original to avoid any NullReferenceExceptions you may have from using the wrong instance from the UI.