Scroll View move back on the spot

Basically for my game I am using Unity UI Scroll Rect. I go through video related to that but cant able to solve my problem.

My scroll view not able to provide scrolling functionality. when I release my finger it moves back at same time. Following video link gives you more idea about this.

https://www.dropbox.com/s/ermxkk919lulb3v/ScrollBugVideo.mov?dl=0

I have done nothing special in creating my scroll hierarchy. No extra script was added in inspector. If you want any more information you want from my side then I am available always.

One thing I want to mention, if I add only single image in child then scrollview works perfectly.

 

EDIT : If I give correct value manually here then my scroll view working correctly. But my content is dynamic then how to deal with it?

 

From what i can see in your video, you have something like this

QuizPanel
-- ContentScrollView
----- ContentPanel
--------- Image
--------- Image
--------- Image

When you add dinamically an Image the the ContentPanel, you also need to modify its height to fit the new element. Start with height 0 and then when you add a new Image you simply add the height of the image to the height of the ContentPanel ( and you should probably add several more offset pixels for the gaps in between images ). This way, after you added all elements to the scrolling list it will have proper dimensions and it should work as intended.

If you want to remove all the items from the list, delete them and make the height of the ContentPanel 0 again. Then start over.

 

@BinaryX , Thanks for this useful info. You are completely right about this.
If I want to change height of content panel dynamically then what is the way for it?

 

If you have a LayoutGroup (Vertical or Horizontal) i don't think you are able to change those values directly, so you will need to use another component (Content Size Fitter i think it's called ) that does this for you.

Without a LayoutGroup, you can access the "sizeDelta" of the RectTransform and change that value. sizeDelta.x is the width and sizeDelta.y is the height.