Sometimes, UIAElement.tap() fails with "scrollToVisible..."

Originator:heath.borders
Number:rdar://10987022 Date Originated:05-Mar-2012 03:33 PM
Status:Open Resolved:
Product:iPad SDK Product Version:4.2.1/Build 4D502
Classification:Serious Bug Reproducible:Sometimes
 
05-Mar-2012 03:33 PM Heath Borders:
Summary:
Sometimes, UIAElement.tap() fails with "scrollToVisible could not generate a scroll to make the element visible."

After the failure, I call window.logElementTree(), and the UIAElement I'm trying to tap is present.

Steps to Reproduce:
Create a GUI with a horizontal scroll view.
Within the scroll view add enough children to require horizontal scrolling.
Call UIAElement.tap() on an element that is not visible on the screen

Expected Results:
The UIAElement should be scrolled to visibility before being tapped.

Actual Results:
The following errors are reported
2012-03-05 21:25:08 +0000 Debug: target.frontMostApp().mainWindow().scrollViews()["Scroll View"].staticTexts()["Child"].tap()
2012-03-05 21:25:08 +0000 Debug: target.frontMostApp().mainWindow().scrollViews()["Scroll View"].staticTexts()["Child"].scrollToVisible()
2012-03-05 21:25:09 +0000 Debug: target.frontMostApp().mainWindow().scrollViews()["Scroll View"].staticTexts()["Child"] - scrollToVisible could not generate a scroll to make the element visible.
2012-03-05 21:25:09 +0000 Debug: target.frontMostApp().mainWindow().scrollViews()["Scroll View"].staticTexts()["Child"] - scrollToVisible could not generate a scroll to make the element visible.
2012-03-05 21:25:09 +0000 Debug: target.frontMostApp().mainWindow().scrollViews()["Scroll View"].staticTexts()["Child"] could not be tapped

Regression:

Notes:

Comments

I'm constantly facing this issue in the app I test. Some of the objects (even buttons) can't be tapped (don't know the reason), however, they provide a rect() property which I use in a following workaround:

function tapByRect(rect){ 

var XtoTap = Math.round(rect.origin.x + (rect.size.width / 2));
var YtoTap = Math.round(rect.origin.y + (rect.size.height / 2));
var target = UIATarget.localTarget();
target.tapWithOptions({x:XtoTap, y:YtoTap});

}

you just need to pass a rect property value of the object to tap - it works for me.

Sergey

By pachlava at March 31, 2012, 12:42 p.m. (reply...)

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