How to dynamically replace the title bar of different activity

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how to dynamically replace the title bar of different activity? The elements on the title bar are different on different activity. Thank you

Mar.01,2021

this. I thought you wrote title yourself. Change it yourself

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-64f5-1be9e2c-469f6.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1be9e2c-469f6.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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