TextButton | like button , with handy touch feedback effects | Android library

I'm new to flutter. I'm creating a login page. but now getting the below error in my code when I add remember me and forget password buttons into a Row Widget to display in one row. how to solve this. for your reference I have attached the full code and UI. login_screen full dart code , login_screen UI image

RenderBox was not laid out: _RenderListTile#c9c23 relayoutBoundary=up24 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE 'package:flutter/src/rendering/box.dart': Failed assertion: line 1982 pos 12: 'hasSize'

I have the following layout for an alert dialog:

when i try to add list view builder , my entire screen is goes black here is the list view builder code

I'm trying to make a login screen inside my flutter app. But for some reason i'm getting an warning (bottom overflowed by 30 pixels) and i don't know why this is happening.

I tried:

• Wrapping my widgets to a SingleChildScrollView
• Using resizeToAvoidBottomInset: false

But none of these solutions worked.

My Login Screen:

I had implemented a column which has a padding of 16px horizontally, and a child container being one of the children. However, i wanted the whole container to be click-able so wrapped it with a TextButton, as a result its width shrunk somewhat, what can i do to restore it back to original while keeping the entire container as a Button?

Here is the code for the concerned widget:

I have read few stackoverflow posts about "Looking up a deactivated widget's ancestor is unsafe" error but couldn't find an answer which work.

I've tried to set a global key with the scaffold, and to use WidgetsBinding.instance.addPostFrameCallback() without success.

I'm pretty sure I'm doing something stupid and easy to fix, but I can't figure out what.

This is a simple version of the code which replicates the error when you go back from PhotoViewPage (photo_view package) :

my_home_page.dart

I was trying to make a form that shows one field at the time that acomplishes the next things:

• When pressing a "next" button, it validates the field and let the user go to the next field if everything is ok.
• When the user presses the next button in the keyboard it should do the same.
• If possible, a sliding animation between fields.

What i came up with was something like this:

the below code is one of my many pages for my app. I'm trying to set this page up with the LayoutBuilder so that it'll work like a quiz page with the bottom half/section would hold 3 to 4 TextButtons and the top half/section would hold the question and possibly display a picture. I did some research and I found that you're able to use the LayoutBuilder to set up containers to be half of the screen. However, when I tried doing that here with this code, I got A LOT of exceptions thrown. So I was wondering if there was a better way to divide the screen in half (or possibly 1/4, 1/4, & 1/2) for a quiz-like layout. Thank you for your help!

quiz.dart

I am currently having issues programming my settings page with Shared Preferences. I have 3 files currently involved and 3 errors I have researched and have no idea how to fix.

The error at Line 157 (main.Dart) says:

The method 'setState' isn't defined for the type 'Settings'. Try correcting the name to the name of an existing method, or defining a method named 'setState'.dartundefined_method

The error at Line 169 (main.dart) says:

The method 'initState' isn't defined in a superclass of 'Settings'. Try correcting the name to the name of an existing method, or defining a method named 'initState' in a superclass.dartundefined_super_member

The error at Line 20 (shared_preferences.dart) says:

The argument type 'String?' can't be assigned to the parameter type 'String'.dartargument_type_not_assignable

I'm new to Flutter, so I have been following mostly tutorials and have bought a couple courses, but I don't know how to even start fixing these errors so any help would be greatly appreciated because Stack Overflow is always great! Thank you!

main.dart (Lines 149 - 240)