Comments (3)
What tutorial / code was this from?
from youtube-tutorials.
What tutorial / code was this from?
On this one: (https://www.youtube.com/watch?v=_j7yKt3vivk)
The error is gone after I change ListView to SliverList, idk why was that
from youtube-tutorials.
Okay so I found the problem. The issue is that the Id that is pushed out for the Read button is actually disposed when we scroll down far enough as it's outside of the view. Then, when we try to scroll up we want to BehaviorSubject and get the id again which is not possible with a normal StreamController
.
To fix this we have to introduce RxDart and use BehaviourSubject
instead of StreamController
as that will let us listen to the same stream multiple times and also remember the last value that is pushed out to the stream.
It's also possible to fix with a normal StreamController by adding Broadcast
to it but that will not remember the Id when we scroll up again. Hence making the button greyed out. I will push up an update with the use of RxDart with some comments.
from youtube-tutorials.
Related Issues (4)
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from youtube-tutorials.