It is impossible to distinguish between pressing "DONE"/"OK" on the touchscreen keyboard and pressing outside the keyboard area on Android devices. Pressing outside the keyboard is an indication of the user wanting to cancel.

Reproduction steps:
1. Open the attached project
2. Build on Android device
3. Press outside the touchscreen keyboard
4. Notice that the canceled state is false

Note: When clicking the back button canceled state is true, but the done state is also true.

Fixed in: 2017.2.0b2
Introduced new API: TouchScreenKeyboard.status which returns an enum (Visible, Done, Canceled, LostFocus) for keyboard actions.