Add new function.
Merge branch 'temp' of https://github.com/superleo-cn/pos-android.git into temp
Merge branch 'temp' of https://github.com/superleo-cn/pos-android.git into temp
merge
Merge branch 'temp' of https://github.com/superleo-cn/pos-android.git into temp

Conflicts:
	res/layout/activity_main.xml
change domain