UISlider - changing its position and appearance by script?

[AxelF]

Hi,

I'm a happy new NGUI customer and want to say a big "thank you" at first - it saves me a lot of time. However, now that I'm digging deeper into all its features I encountered my first problem: I'm setting the value of an UISlider object in my script and hoped it would update its appearance automatically afterwards (button position e.g.). Well - it's not working and I wonder why. Is it not enough to simply change the variable "value"? What else is needed so the slider updates itself correctly?

Thanks in advance for any help!

Regards, Axel

[ArenMook]

Changing the UISlider's 'value' is enough. What's the full code you're using here?

[AxelF]

Its a simple call of my my slider object like "slider.value = 1" in the Start() function of another GUI object. I guess the problem is somewhere in my code then. But it's good to know it should work at least.

[rahares]

This might help, its how I update a UISlider as a healthbar

using UnityEngine;
using System.Collections;

public class VitalBar : MonoBehaviour {

   public UILabel healthBarLabel;

   private UISlider vitalSlider;
   private float _maxWidth;
   private bool _displayText = false;

   void Awake (){
      vitalSlider = GetComponent<UISlider> ();

      if (vitalSlider == null) {
         Debug.LogError("Could not find the UISlider Component!");
         return;
            }
      _maxWidth = vitalSlider.foregroundWidget.localSize.x;
      _displayText =true;
   }


   // Use this for initialization
   void Start () {
      UpdateDisplay (- 5f, "100/200");
   
   }
   //vitalSlider.sliderValue = health/healthBarLabel;
   public void UpdateDisplay(float x ){
      if (x > 0)
         x = 0;
      else if (x > 1)
         x = 1;
      vitalSlider.value = 50;
      DisplayText = false;
   }

   public void UpdateDisplay(float x, string str ){
      UpdateDisplay (x);
      if (str != "") healthBarLabel.text = str;
   }

   public bool DisplayText {
      get { return _displayText;}
      set { _displayText = value;
          if (!_displayText)
            healthBarLabel.text = ""; }
   }
}

[ArenMook]

Slider's value goes from 0 to 1. You're passing '50'.

[AxelF]

Wow, that is strange. If the parent GameObject of the slider (a UISprite) contains a Tween Scale component I can not set the value visually of the slider object. If I deactivate the Tween component it works. I have absolutely no explanation for this behavior. If the parent object is a panel the problem persists, so it's not UISprites fault.

[ArenMook]

TweenScale from which value? If it's zero, then that's an invalid scale (you can't divide by zero).

[AjitR]

if we use 'public UISlider slideBAR'....then what should be given as reference for this...
I tried this but i couldn't find any 'UISlider' for referencing ..