Flutter Tutorial - Migrate App To Flutter Null Safety

Migrate your App to Flutter Null Safety since Flutter 2.0 became Null Safe and you can switch with the Dart migration tool to Null Safety.

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TIMELINE
0:00 Introduction Null Safety & Migrate Flutter App
0:32 Introduction Migration
0:57 Preconditions before Migrating App
1:24 Check If Project Is Migratable?
2:07 Migrate To Null Safety Dependencies
2:51 Upgrade Dart Version
3:31 Dart Migrate Command
4:48 "?" - Nullable Type
4:58 Not Nullable Type
5:18 "!" - Force To Not Nullable Type
5:36 Manual Dart Migration
8:31 Apply Migration - Migrate Flutter App

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Thanks For Watching :-)

[stefanomilani]

Excellent recap of the novelty, thank you very much!!!

[_therover_]

This was really informative ♥️ keep up the good work Johannes

[gnrslashsp]

Very good, its important to know HOW to do and you provide all information that we need to know to make it as best pratices! =]

[haiderjaafer]

Amazing work as always... should i do null safety into project to avoid errors in future

[ravijagini]

For you OCR video, can we use this(as firebase ml kit is depreciated)? Also, is it possible if you could make a video on reading text of an image(basically ocr text scan to speech)? Thanks in advance!!!

[MoustafaMahmoud]

Good work bro, u r the best ❤️
Could you please make a video for making an app to send data into googl sheets and update, delete and fetch them to the app?!

[MShadow]

Please can u make a video about how to make a contact us page with flutter which sends email from hosting or maybe domain to emails?

[shilangyu]

Am I blind or build runner has still not released a null safe version?

[JMcWinter]

First url to guide the migration process didn't work. Chrome told me he couldn't connect, check internet, firewall etc. I tried it with Edge and also didnt work. Played around with firewall settings and creating exceptions..nothing helped. But one thing helped just used 'dart migrate' again and got a new url that worked 😉

[alexyan]

Sir do you know what this error means : The library is legacy, and should not be imported into a null safe library. ?
I upgraded to flutter 2.0 and dart 2.12.0.. thank you

[vamsikrishnathanikanti]

Thanks for video bro.
What if all my packages have not ✓ in resolvable. ? What I can do ?