GC question.

by Jiri » Thu, 24 Sep 2009 21:59:05 GMT

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 I have a simple question, in my ctivity i define a static private as so:

private final FileFetcher ff = new FileFetcher();

what happens when this activity is destroyed, is the reference to the 
FileFetcher completly gone, and can everything be marked for GC?

Or would it better to write

private FileFetcher ff;

and the in my onCreate instantiate the FileFetcher and nullify it in the 
onDestroy method?



GC question.

by Felipe Silveira » Thu, 24 Sep 2009 22:17:09 GMT

 Hi Jiri,

Static references remains on memory until the process where your activity is
running is destroyed.

So, in order to avoid memory leaks, point the reference to null in


Felipe Silveira

Felipe Silveira
Engenharia da Computao
Universidade Federal de Itajub
MSN: felipeuni...@hotmail.com
Skype: fsunifei


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GC question.

by Mark Murphy » Thu, 24 Sep 2009 22:23:04 GMT

 Actually, the OP's example is final, not static.

Final references cannot be pointed to null, as they cannot be modified.
However, they are also not static, so they should be garbage collected
once the containing object (an activity in this case) itself is garbage

Mark Murphy (a Commons Guy)
Android App Developer Books:  http://commonsware.com/books.html 


GC question.

by Jiri » Fri, 25 Sep 2009 14:50:23 GMT

 Thank you both, that was what I needed to know.



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