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Image padding

Posted on 2011-02-28
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Last Modified: 2013-11-19
I am stuck on this very important part and which is ruining my system.

Presently to maintain the aspect ratio Android changes the image width and height of an image i.e it pads it to maintain the aspect ratio

How can I know how many lines of pixels were added. Is there an API, formula ?

The reason is that my application adds tags to an image with x, y information on another platform . When I open it on my ANdroid device the image resolution is changed, so my tags look out of place. If I know how android calculates this I can apply the same for the orientation of my tags and work around

Your help would be greatly appreciated..Thanks in advance
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Question by:jbajaj
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oleggold earned 500 total points
ID: 35003621
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Expert Comment

by:UnConn
ID: 35008271
I think you have two choices.

- Make your layout scale.  Do not put your tags in postitions relative to pixels as they can change between device screen sizes.  Android programing best practices state this too.  If you use a layout that scales then the layout should scale relative to the image.

- Use PS instead of PX.  PX uses pixels but PS uses the scaled resolution based on DPI.
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Author Comment

by:jbajaj
ID: 35025566
Hi oleggold,

  I didn't get any idea from http://www.codeweblog.com/stag/android-alchemy-formula-list/   site. Please
explain me how this site will help me. Or if you have any idea then please explain me.

Thank you.
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Expert Comment

by:UnConn
ID: 35028966
There is one more option and this is providing graphics for each version of the screen you will support, LDPI, MDPI, and HDPI.  This assumes you are running on 1.6 and above (minSdkVersion="4")
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Author Closing Comment

by:jbajaj
ID: 35190431
good
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