Bug? [SOLVED] Horizontal Anchor unexpected result with ScrollView

[Computersmith64]

I have a layout with a bunch of Labels on it. They are effectively arranged in 2 columns with a description on the left & a value on the right. I initially had them laid out directly on the Activity with the left column using a left horizontal anchor & the right column using a right horizontal anchor (with a right edge distance of 55). This has worked well for me in various apps over a long period of time.

After I added a few extra Labels, I found that the layout was too big for the Activity, so I created a panel & cut & pasted the labels from the activity to the panel. Then I changed my activity code so that the panel is loaded onto a ScrollView.

All this works well except I can't see the values in the right hand labels. When I step through my code, I find that after the layout has been loaded into the ScrollView, the left position of the right hand labels is a large negative number (eg: -300) - so they are positioned well off the left side of the Activity. The only way I have been able to get it to work properly is to set the horizontal anchor of the right views to left.

Is this a bug, or am I missing something?

- Colin.

 

[JordiCP]

Seems as if the the label's positions have been evaluated when the panel's dimensions were 0, so any anchor to the left is ok, but not those from the right --> the -300 make sense as the sum of the right anchor distance plus the label width if the panel's width is 0
Are you loading the layout inside the scrollview inner panel before having sized it? Time ago I found a similar issue and if I remember correctly, was related to it.

 

[Computersmith64]

Seems as if the the label's positions have been evaluated when the panel's dimensions were 0, so any anchor to the left is ok, but not those from the right --> the -300 make sense as the sum of the right anchor distance plus the label width if the panel's width is 0
Are you loading the layout inside the scrollview inner panel before having sized it? Time ago I found a similar issue and if I remember correctly, was related to it.

Yeah thanks @JordiCP - you're right. That's exactly what was happening. If I set the scrollview panel width to 100%x before I load the layout into it, it works fine with the horizontal anchor set to right.

Just one of those little traps for the unwary...!

- Colin.