I meet a bug with UIScrollView.

[woshihuo12]

when i add UIScrollView use code like this:

1.   mScrollView = mPanel.gameObject.AddComponent<UICustomScrollView>();
2.            mScrollView.movement = UIScrollView.Movement.Vertical;
3.            mScrollView.verticalScrollBar = scrollBar;
4.  

i notice that in UIScrollView , when mPanel.gameObject.AddComponent<UICustomScrollView>() execute:

1.         void OnEnable ()
2.         {
3.                 list.Add(this);
4.  
5.                 if (Application.isPlaying)
6.                 {
7.                         if (horizontalScrollBar != null)
8.                         {
9.                                 EventDelegate.Add(horizontalScrollBar.onChange, OnScrollBar);
10.                                 horizontalScrollBar.alpha = ((showScrollBars == ShowCondition.Always) || shouldMoveHorizontally) ? 1f : 0f;
11.                         }
12.  
13.                         if (verticalScrollBar != null)
14.                         {
15.                                 EventDelegate.Add(verticalScrollBar.onChange, OnScrollBar);
16.                                 verticalScrollBar.alpha = ((showScrollBars == ShowCondition.Always) || shouldMoveVertically) ? 1f : 0f;
17.                         }
18.                 }
19.         }

but when this the verticalScrollBar is null...

so i make a trick like this:

1.         mScrollView = mPanel.gameObject.AddComponent<UICustomScrollView>();
2.             mScrollView.movement = UIScrollView.Movement.Vertical;
3.             mScrollView.verticalScrollBar = scrollBar;
4.             [b]mScrollView.enabled = false;
5.             mScrollView.enabled = true;[/b]
6.  

so this a bug? can i have some help ??
very thanks...

[woshihuo12]

someone can help me?

[ArenMook]

Replace the OnEnable() function with this code:

1.         [System.NonSerialized] bool mStarted = false;
2.  
3.         void OnEnable ()
4.         {
5.                 list.Add(this);
6.                 if (mStarted && Application.isPlaying) CheckScrollbars();
7.         }
8.  
9.         void Start () { mStarted = true; if (Application.isPlaying) CheckScrollbars(); }
10.  
11.         void CheckScrollbars ()
12.         {
13.                 if (horizontalScrollBar != null)
14.                 {
15.                         EventDelegate.Add(horizontalScrollBar.onChange, OnScrollBar);
16.                         horizontalScrollBar.alpha = ((showScrollBars == ShowCondition.Always) || shouldMoveHorizontally) ? 1f : 0f;
17.                 }
18.  
19.                 if (verticalScrollBar != null)
20.                 {
21.                         EventDelegate.Add(verticalScrollBar.onChange, OnScrollBar);
22.                         verticalScrollBar.alpha = ((showScrollBars == ShowCondition.Always) || shouldMoveVertically) ? 1f : 0f;
23.                 }
24.         }

[woshihuo12]

thanks!!
can this changed in next ngui version？

[ArenMook]

This is from the latest Pro version, so yes.