Android Click tabbaritem to trigger drop-down refresh

when users browse to the bottom of the page, they can click tabbarItem to return to the top and trigger a drop-down refresh. Similar to the home page of Jinri Toutiao

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e45320-44b22.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e45320-44b22.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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