Flutter | Navigation between screens. How to send params between screens using navigation?
00:00 Preview
00:20 Navigate to a new screen using Navigator.push()
01:46 Back to the previous screen using Navigator.pop(context)
03:09 Pass parameters from the 1st screen to the 2nd (1 → 2) using constructor (without parameter name)
04:30 Change constructor to use parameter name
05:39 Return value from 2nd screen to the 1st (2 → 1) using Navigator.push.then
07:00 Handle null and no-null return value
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