set the progress bar and progress dialog on the ui thread

Change-Id: I7eaf38bdb5bf24d3b32f169581b3cf3b6b1a3a30
fix

Change-Id: Ic91f9bf9bf2dfcb8672ed692a00b0eeda943ae01
Merge branch 'master' of https://github.com/koush/ion

# By Koushik Dutta
# Via Koushik Dutta
* 'master' of https://github.com/koush/ion:
  fix
  set the progress bar and progress dialog on the ui thread