关于android多用户

1， 获取支持多少用户

pm get-max-user

2,用户相关的am pm指令

We can use pm command to add/remove user also.
       pm create-user [--profileOf USER_ID] [--managed] [--restricted] [--ephemeral] [--guest] USER_NAME

       pm remove-user USER_ID

       pm get-max-users

How to switch user.
It is implemented in ActivityManagerService.switchUser method.

We can use "am switch-user" also.

       am switch-user <USER_ID>

       am start-user <USER_ID>

       am unlock-user <USER_ID> [TOKEN_HEX]

       am stop-user [-w] [-f] <USER_ID>
3，应用安装到指定user上

adb install --user <user_id> XXX.apk