remove system.err print
add video fail retry
Merge branch 'easemob-dev' of https://github.com/easemob/sdkexamples-android into easemob-dev
remove unused package in async image loader
add command on store password in app
update uidemo
join groups after sync groups from server
back to 4.2.2 for the sdk version
update for black list
update uidemo