Android - how update widget often but only when it is visible?

Posted by tomash on Stack Overflow See other posts from Stack Overflow or by tomash
Published on 2010-03-10T12:24:24Z Indexed on 2010/05/30 1:22 UTC
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Filed under:

android

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update

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widget

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visible

I'm going to create widget which needs to update its content every minute (it shows time-related data).

However, there is no need to update widget if it is currently invisible, which means:

screen is turned off
another app is running
widget is placed on another (invisible) home screen tab

What is the best way to update only visible widget every minute - without waking up device nor doing unnecessary computations? After widget becomes visible, small lag before update is acceptable.

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