Date and Time Adjust feature

[B.Douille]

To me, the date/time change is one of the most important feature expected from this app’ because the tool I used so far for images and videos on Android is becoming obsolete.
I tested all 3 proposed method (Personalised date/time, copy from one field, shift time back or forward). The results of the changes seams correct.

However there are some improvements to study :
1) The Original date and time presented on top looks like the EXIF:Original. May I suggest that in all 3 workflows the Source drop-down list be visible and the value on top reflect this choice. For example, this would allow to source a date/time based on GPS, define a shift (the time-zone) and see what's going to happen.
2) If the above makes sense, the "Personalised" Workflow is no more relevant as the calendar and clock can be moved to the Source list
3) When a shift is applied and the original values of the various fields are not aligned (not identical for whatever reason), the shift is applied individually to each. As a result the fields are still not aligned. In this case, the date/time on top, named Adjusted is not fully relevant. Best to set selected targets to Source ±Shift. Clearer.
4) If screen size allows, display all targets with checkboxes and their (non)Adjusted values (something similar to the desktop version.