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Thread: Touchmove, Touchstart, Touchend targets wrong in iOS

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    Success! Looks like we've fixed this one. According to our records the fix was applied for TOUCH-2809 in a recent build.
  1. #1
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    Default Touchmove, Touchstart, Touchend targets wrong in iOS

    REQUIRED INFORMATION

    Ext version tested:

    • Touch 2.0.0GPL and 2.0.1RC
    Browser versions tested against:
    • iOS 5.1
    DOCTYPE tested against:
    • HTML5
    Description:
    • When I have a touchmove event and I track the target, it works in Chrome but in iOS the touch target is ALWAYS the first thing I touched. Even if I drag my finger to a different element, the same element.id comes back again and again.
    Steps to reproduce the problem:
    The result that was expected:
    • That the target element is actually what you are touching
    The result that occurs instead:
    • The target never changes, is always the first thing you touched
    Test Case:

    Code:
        https://github.com/roycyang/sencha-touch-extensions

    HELPFUL INFORMATION

    Screenshot or Video:

    • attached
    Correct element IDs in chrome:
    Screen Shot 2012-04-22 at 4.57.14 PM.jpg

    The touchmove target never changes in iOS:

    photo.jpg

    See this URL for live test case: http://roycyang.github.com/sencha-touch-extensions/

  2. #2
    Sencha - Sr Software Engineer mitchellsimoens's Avatar
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    Default

    Thanks for the report.
    Mitchell Simoens @LikelyMitch
    Sencha Inc, Senior Software Engineer
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  3. #3
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    Default any fix?!?

    did you found any fix for this issue?!

  4. #4
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    Default Fix

    I need this fix too. Are there any solution?

  5. #5
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    Default

    It's not fixed on ST2.1 (Build date: 2012-11-05 22:31:29)

    The temporary solution:
    Code:
    onElementTouchMove: function(e) {
            if (Ext.browser.is.ChromeMobile) {
                var x = e.event.changedTouches[0].screenX;
                var y = e.event.changedTouches[0].screenY;
            } else {
                var x = e.pageX;
                var y = e.pageY
            }
            var target = document.elementFromPoint(x, y);
    }

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