Hi Vaidya,
As i can see in your attachment,
your system is also not connected as the error says : "SAP control request failed : Connection refused"
Check your Username and password are correct.
This is the main reason why your are not able to activate your views
You can also try deleting your system once and then re-adding it
Even if your system says : "system state cannot be determined", you should be able to work and activate your views properly.
I myself has faced system state cannot be determined thing but i was able to do all my work including activation of views
In hana studio even after going to window preferences-> network connection ->active provider and changing setting to direct system state thing doesn't go then may be try checking are you using the same HANA Studio version as your HANA DB server Version as i have seen this thing coming due to this conflict also