Long-press on search button to create a new task
It is possible to set this up so that it can be done from anywhere in Android.
One press to enter a task would be great especialy if there was an option for voice tasks or voice to text too. Doesn't have to be the search button a range of different options would be good.
Newer phones don't have a search button & it takes a long press on the home button to bring up search already.
K. Su commented
No, it is not intuitive.
Yes this would be a great time saving addition, especially if voice to text was enabled as well.