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Thread: get current scroll/drag position of sencha touch panel

  1. #1
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    Default get current scroll/drag position of sencha touch panel

    Hi All,

    I'm using Sencha Touch 2. I am using a panel set to be scrollable vertically, and need to be able to get the current scroll position of the panel. I explored the Ext.scroll.View object returned from getScrollable(), and also Ext.scroll.Scroller but they don't seem to have a method to get current position, that I could find.

    Looking in firebug at the object returned from getScrollable(), I did actually find a variable in there that gives me what I want, but it looks like it's intended to be private. It would be called like this ('myPanel' is just the panel instance):

    myPanel.getScrollable()._scroller.lastDragPosition

    that call returns an object with 'x' and 'y' members, which is perfect for my purposes.

    Is this the best way to get the scroll position or is there a more supported way?

    Thanks.

  2. #2
    Sencha - Sr Software Engineer mitchellsimoens's Avatar
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    That could work but instead of getting the scroller via _scroller you should do getScroller()
    Mitchell Simoens @LikelyMitch
    Sencha Inc, Senior Software Engineer
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    Check out my GitHub, lots of nice things for Ext JS and Sencha Touch
    https://github.com/mitchellsimoens

  3. #3
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    yep, thanks. That works.

    Also, for anyone else interested in this, I figured out that 'lastDragPosition' is just the position the scroller was at when you released your finger, which is usually different than the final resting position. For the final resting position, it's just 'position', like:

    myPanel.getScrollable().getScroller().position.x
    myPanel.getScrollable().getScroller().position.y

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