Flutter Null Safety (!, ?, ??, late, ...)

[@HeyFlutter]

This might help you :) 👉 12 Week Flutter Training from Newbie to Expert: heyflutter.com Source Code: github.com/JohannesMilke/null_safety_all Flexible Widget Tutorial: kzbin.info/www/bejne/a4Xac4uCj8mJrM0 Expanded Widget Tutorial: kzbin.info/www/bejne/hGKpfotqp6mhbLs Spacer Widget Tutorial: kzbin.info/www/bejne/pGXHe4mLmc9nn80 FittedBox Widget Tutorial: kzbin.info/www/bejne/jaG3foF3p9OLmsU Flutter Layout Basics Tutorial: kzbin.info/www/bejne/r4rbppiKg653oqM Row Layout Basics Tutorial: kzbin.info/www/bejne/ooqYeKeEoNusnq8 Column Layout Basics Tutorial: kzbin.info/www/bejne/pIicoXSvedhgrac

[@leoMC4384]

Great content as always. Like 2 weeks ago I had to migrate this old project I had to null safety and update all its dependencies. I did it manually. It drove me nuts. This guide would've made things much easier.

[@someshsahu4638]

nice explanation sir thankyou

[@HeyFlutter]

You are welcome, Somesh Sahu!

[@mikazora423]

Best null safety guide ever,, nice work 🔥🔥

[@realislam8153]

I must say that One of the best informative video on your channel ever Thanks for sharing this great useful information with us

[@HeyFlutter]

Glad you liked it, @realislam8153 😀

[@HabiasaDeveloper]

There's always something that you don't know. For example, I am a flutter intermediate. But ...? was new for me. Thank you for the tutorial. Really enjoyed to watch those smooth animations.

[@LuisOtavioZimmermann]

The best video about it. Straight to the point.

[@barziyassin1]

I really love your short and unique explanations, keep going bro

[@HeyFlutter]

Glad you liked it, Barzy Yasin 😀

[@TarrenHassman]

Absolutely incredibly useful information in a beautifully concise way. Love your work

[@HeyFlutter]

Thanks, Tȟaŋháŋši Tȟáŋkamatȟó! 🙂

[@ashfaqkayes5222]

Made my day bro. This operator (!) with nullable var was a headache for me.

[@HeyFlutter]

You are welcome, @ashfaqkayes5222 😊

[@88billizzard88]

Very understadable! Thanks

[@KrishNamaste]

what an amazing explanation, kudos!

[@HeyFlutter]

Thank you, Krishna Gupta! 🙂

[@WILFREDTSIKAH]

Been looking to understand the difference. Thank you very much 🙏

[@muniralmeslaty9602]

Very very Good video Thank you u explain how to solve null safety problems

[@muniralmeslaty9602]

@@HeyFlutter I am waiting another videos from u

[@danqiu6413]

Very good lesson! Thanks!

[@HeyFlutter]

You’re most welcome, @danqiu6413! 🙂

[@ashupathak9522]

Thanks for listening my demand ❤️ Best flutter teacher 🔥

[@peterbk364]

That voice sir.... :) thankyou sir for this informational video... :) LOved it

[@mayur16]

Keep going.. very informative content..

[@crazy-man]

clear presentation, I just wanted to know more about null safety

[@pranaychakraborty4866]

As always, best explanation ever

[@mohammedtouati8479]

Wonderful content as i expect, keep going.

[@HeyFlutter]

Glad you liked it, @mohammedtouati8479 😀

[@bhabhayt398]

building list with complex very json data in flutter implement in ui

[@naveenjoshi7700]

Same question

[@KapilSharma-ul4ev]

How to implement a complex nested JSON object in ui flutter

[@Aushadhaya8158]

Same to same my question please explain properly

[@Aushadhaya8158]

This question is very important because I have to give project for 3 days and I am not able to implement nested API.

[@devrajheropanti6847]

My is same

[@learning1online156]

was very helpful to me, thank you!

[@nurola]

Your channel is like stackoverflow when I stuck somewhere while coding :) Get your recipe pill just before start.

[@HeyFlutter]

Great, Thank You VelociRaptor

[@tishansaha5431]

wow nice explanation :) thnx a lot

[@ChrisHalden007]

Great video. Thanks

[@AdilRangila]

Greatly explained

[@alanhartmann3355]

Nice work, thanks!

[@neliquidmusic]

Nice! Thanks!

[@parameshmamidisetti8167]

I need 30 minutes video on null safety ,deep explanation

[@rajgathiyawala6302]

i clicked on container then container size will be increased from bottom and where size will increase I want to add text on that space....... which widget use for this??

[@eek9313]

Excuse me sir! I'm learning so much from your tutorials 😃 and while learning I got a problem that i created drawer and button NavBar for my app but when i opened drawer ,NavBar came infront of the drawer...How can i fix it. Please help me as possible !

[@eek9313]

@@HeyFlutter Sorry Sir but I can't get it😞 ! Could you please make a video tutorial on it ,tough cause I see many people have got the same problem. It would be really useful for beginners like me. ❤️

[@HeyFlutter]

Thank You Ⓖeek! Follow this link: stackoverflow.com/questions/63882656/flutter-drawer-overlaps-the-bottom-navigation-bar I hope you will get your answer 🙂

[@alexmaina3328]

My flutter teacher

[@ZOZA468]

nice intro

[@coder551]

Bro how Can I Paste any File In Particular device storage data path Using button In Flutter ? Can you Tell Something About It?

[@HeyFlutter]

Thank You Coder! Follow this link: medium.com/kick-start-fluttering/saving-data-to-local-storage-in-flutter-e20d973d88fa I hope you will get your answer 🙂

[@akashhirusha3925]

Can you explain how to convert previous version of project to null safety

[@sardortukhtamurodov1138]

Could you make a video lesson on Dynamic Links please...

[@KhaledABED-m5j]

Thank you

[@HeyFlutter]

You are welcome, @user-jj3ld6kk2u!

[@uzairahmad5086]

Hi Sir Please Make a video on how to request Location Permission on run time i am getting location but for that i have to allow location manually in settings of app Kindly make a video on permission Dialog Box Thanks

[@uzairahmad5086]

@@HeyFlutter sir please make next video on this topic. I've requested this video in last month

[@jorgeandresdiaz0]

When is late initializer needed? It seems like a keyword that leads to bugs

[@tbadi-Tonny]

Hahaha 😅

[@leoMC4384]

In a stateful widget with a dynamic value that is assigned to another variable in the initState statement. In order to use that variable in the widget, you need to initialize it outside the initState and that's where I use "late". ☺️

[@HeyFlutter]

Thank you, Jorge Andrés! 🙂. Use late when you strongly convinced that first time you use late field it will be initialized

[@devrajheropanti6847]

json data in flutter how to implement

[@radovankljestan8793]

Nice like always, can we expect soon something about dapps with flutter? Maybe on Ethereum network or others...Thank you for amazing content :)

[@sergey_molchanovsky]

I didn't know about ?... operator.

[@rishi2220]

🔥

[@m.2.3]

Error: The operator '[]' isn't defined for the class 'Object'. - 'Object' is from 'dart:core'. Try correcting the operator to an existing operator, or defining a '[]' operator. final data = snapshot.data!["data"] as List; Can you solve the problem?

[@HeyFlutter]

Thank You محمود علي حسين! Follow this link: stackoverflow.com/questions/60245865/the-operator-isnt-defined-for-the-class-object-dart I hope you will get your answer 🙂

[@gataka534]

Please activate the subtitles in different languages

[@goldenlife6166]

Cool

[@soloknight000]

Sir can you create a DISCORD server so all of your subscribers can join there and chat or solve problems together?

[@gataka534]

why is this channel only in english

[@leoMC4384]

Because it's the most known language worldwide.

[@HeyFlutter]

Thank you, Gataka534! 🙂. In future I will think about it, but for now it will remain in English as it is easy for people to understand English.

[@johnmartin9329]

throw error when List eroror Text([...?_secList.elementAt(0).id, 1].toString())

[@HeyFlutter]

Hey @johnmartin9329, make sure to follow the tutorial step by step 🙂