UI of MianActivity

whole ui of mainpage is done
Revert "UI of MianActivity"

This reverts commit 7e7f6c7ce8e57ac436b2a782e74192bd9665b009.
Revert "Revert "UI of MianActivity""

This reverts commit 9d23b1fbb33dae00ec826fec5e455abb1ccc65bd.