tree 73a488b0fda0f7aefc612929ff54f0dc132d5cac
parent 3ce86481cbde92e2cb6fe3a46cbedd8b2a5c4b48
author Mattias Petersson <mattias.petersson@sonyericsson.com> 1292922911 +0100
committer Dianne Hackborn <hackbod@google.com> 1293043367 -0800

Improve performance of WindowState.toString()

This fix improves the performance by caching the string that should
be returned, and reuse it next time if possible.
This will make it faster to switch between activities, approximately
half the time to create the new view when changing from landscape to
portrait. Also, the time for starting a new application is be reduced
as WindowState.toString is being called thousands of times in this
case.

Change-Id: I2b8b9bc1e251d1af43b6c85f049c01452f2573a2