Scene loading progress bar

[Drakuls]

Hello! 

Im trying to implement loading progress bar in my Unity game.
The progress bar contains UISlider script. And I cant find a way to feed in a value from a script.

Progress bar has a label. The label is in On Value Change marked with method UILabell.SetCurrentPercent (so it changes with progress bar change).

How to change the progress bar from script ? I have my loading script and basicali there is a variable which changes from 0 - 100. (%).
I tried to make public void function and puted there this my variable, but nothing changes when I set this script/function to UIslider -  On Value Change window.
Do I have to make my variable equal with somekind of NGUI property ?

[vallcrist]

You have to use the UIProgressBar.value property.

[Drakuls]

You have to use the UIProgressBar.value property.

Ok I did like that, but no luck. Getting error: NullReferenceException: Object reference not set to an instance of an object (//on this line    loadProgress = UIProgressBar.current.value;)

1. private float loadProgress = 0;
2.  
3.         void OnGUI() {
4.         GUI.Label (new Rect(500,20,100,30),"menu");    
5.        
6.         if (GUI.Button (new Rect (25, 75, 100, 70), "RACE")) {
7.                 //      Application.LoadLevel(2);
8.                        
9.                         StartCoroutine(DisplayLoadingScreen(levelToLoad));
10.                 }
11.  
12. IEnumerator DisplayLoadingScreen(string level) {
13.                 GalvKamer.SetActive(false);
14.                 MenuSkr.SetActive(false);
15.                 UIroots.SetActive(true);
16.                
17.                 AsyncOperation async = Application.LoadLevelAsync(level);
18.                 while (!async.isDone) {
19.                        
20.                         //loadProgress = (int)(async.progress*100);
21.                         loadProgress = async.progress;
22.                        
23.                         yield return null;
24.                 }
25.         }
26.        
27.         // Update is called once per frame
28.         void Update () {
29.                 Progress();
30.         }
31.  
32.         public void Progress () {
33.  
34.                 loadProgress = UIProgressBar.current.value;
35.         }
36.  
37. }
38.  

[hazzy]

You have to get a reference to YOUR progress bar in the scene. Then you can then set the .value property of that progress bar.

You're trying to set a value on a static reference to UIProgressBar from UIProgressBar itself, which may or may not be null at that point. Either way, don't do it like that.

[ArenMook]

Anywhere in the code in a script attached to the same game object as the progress bar:

1. GetComponent<UIProgressBar>().value = 0.5f;

In an OnChange notification callback:

1. UIProgressBar.current.value = 0.5f;