Using the GridView Widget with Custom List Items - Flutter Dev Series by Roman Just Codes (S1E4)

In this third episode of the Flutter Development Series, I'll walk you through using alternative layout widgets such as the GridView widget to lay out list items while creating the SelectedCategory widget page for this app. I also discuss the following:
-Creating a shareable customized AppBar as a Stateful Widget
-More on creating Dart models to mock up the widget data fed to them
GitHub Repo for this project:
github.com/rom...
#Flutter​ #30DaysOfFlutter​ #Dart​ #RomanJustCodes​ #CrossPlatform​ #Android​ #IOS​ #Web​ #Desktop #Widgets #GridView

[@Qillllas]

so if i wanna work on the second category where should i do it since the class does not exits yet, and if i create a new class for the second category does it automatically link to the category list page? perhaps will u make a video on how to do that?

[@jamesmwangi2491]

great tutorial

[@yaguarei]

Hola, gracias por compartir tus conocimiento, explicación excelente, estoy estancado en flutter 2.0 cuando va a la página de detallespage es requerido un parámetro y me da error, por donde te puedo enviar la pila del erroryas detalle?

[@MrGreyManta]

thanks man i appreciate this

[@ramiahmed8496]

great job thank you

[@romanjustcodes]

Thanks for watching!

[@gabriellopez2165]

Me suscribo 😁 excelentes explicaciones... Pero no pude solucionar un error del navigator de la última parte del video😥

[@romanjustcodes]

Gabriel, si tienes algun problema me puedes enviar un mensaje por Github como un issue y puedo ver si te puedo ayudar. Gracias por tu apoyo, y vas a ver que tu problema se va a solucionar! Sigue adelante!

[@VaibhavSinhavbh]

Can you guide me fixing error when applying super class..video time 1.33

[@romanjustcodes]

Hi Vaibhav I’ll help you fix your issue. I saw your message on GitHub. Will reply there

[@manikan6847]

am also facing thiss error... solvedd???

[@romanjustcodes]

@@manikan6847 please ping me via a Github issue so I can reply directly with the way to solve the problem. Thanks for your support!

[@dev.faizan]

excellent😍😎😎

[@dev.faizan]

subscribed

[@romanjustcodes]

thank you for the support, Faizan!

[@markpanaguiton799]

Hello, Roman! Thanks for this video! I hope that someone can help me understand this concept better. I watch your videos because I want to learn more about nesting lists within another list (subcategories to your categories). I did not execute the part wherein you extended the Categories to Subcategories because I am using a different data type (products to categories) which I thought would be okay as long as I have the Products list inside my Categories data. My challenge is that when I go to the GridView part, the List.generate command knows the number of items inside Product, but cannot generate the names for it. Hoping you can enlighten me!

[@romanjustcodes]

leave me a message on this project's Github Repo as an issue so I can try to help!

[@markpanaguiton799]

@@romanjustcodes already fixed this after studying setters and getters further lol sorry I'm really a complete noob, but thank you for responding! I have problems from the 5th video now (selected part becomes null after rerun)

[@romanjustcodes]

@@markpanaguiton799 send me a msg via Github I might be able to help

[@rebazjabar7660]

if someone has a problem with SubCategory Class when you add parameters in Super class in minute 1:33 , inform me i have a solution

[@VaibhavSinhavbh]

i am getting error i.e "The named parameter 'subCategories' is required, but there's no corresponding argument. Try adding the required argument."

[@romanjustcodes]

@@VaibhavSinhavbh will reply to you separately and post the answer here if anyone else is having the issue

[@VaibhavSinhavbh]

@@romanjustcodes Thanks for your response. When can I expect resolution.?

[@nitingopal7929]

i am also having the same problem... have u solved it ?

[@hafiey3228]

I have the same problem. Can you show how to solve it ?

[@rebazjabar7660]

i spend a day to fix the null safety problem with the new flutter that has .

[@KisanKang]

Hey bro, at the @11:00, How did you put "this.selectedCategory" which is 'Category' class as "subCategory" parameter which is requiring 'SubCategory' class................ Help me TT

[@rebazjabar7660]

@@KisanKang bro different class need a required i fixed by my own way it worked but there is easy way fix , go to the roman Github profile you can see the LIb folder and see the class and make sure your code the same as romans .

[@KisanKang]

Thank you for replying. But the file on his github is the final version. So the part i wondered is different with this video's status

[@rebazjabar7660]

@@KisanKang Did you fix the problem ??

[@KisanKang]

@@rebazjabar7660 thank you for asking me bro!!! I didn't know detail how to use git. I found to check the file which had been commited before !! There are too many things that i have to learn more TT

[@thyagosouza8087]

How to fix it in SelectedCategoryPage? got error! return GestureDetector( onTap: () { Navigator.push( context, MaterialPageRoute( builder: (context) => DetailsPage( subCategory: this.selectedCategory.subCategories[index] ) )); },

[@sofsof2009]

Me too any help ???

[@ehei_mni]

Any solutions yet?

[@vukasinsl1]

I did this : return GestureDetector( onTap: () { //print(selectedCategory.subCategories![inde].name); Navigator.push( context, MaterialPageRoute( builder: (context) => DetailsPage( subCategoryModel: selectedCategory .subCategories![index] as SubCategoryModel, ),