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https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t0.0
nIiHM41PPbQ
So for this video I'm going over the tutorial for next week which will be to create an infinite scrolling list using flutter only with no outside libraries.
0
11
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t16.0
nIiHM41PPbQ
Hi guys, welcome to this new video form that I want to try out.
16
20
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t20.0
nIiHM41PPbQ
It will be me going over the process of creating my tutorials.
20
25
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t25.0
nIiHM41PPbQ
That means getting something to work that I have on my list and then refactoring throughout the entire time to get it to a point where I can present it to you guys as a solution to the problem that I'm trying to solve.
25
37
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t37.0
nIiHM41PPbQ
This week my camera died half way through because also out of focus the entire time so you won't have my face in the bottom left corner.
37
46
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t46.0
nIiHM41PPbQ
It's also a lot longer. I'm not cutting out too much of the dead coding time so it won't be as fast past my tutorials.
46
55
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t55.0
nIiHM41PPbQ
If that's a problem please let me know and I can figure out a way to keep these long and informative but still come back to match my tutorial styles.
55
64
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t64.0
nIiHM41PPbQ
Without further ado let's start the tutorial with scroll, flutter project, a coal mine continuous scroll and once that's done we can open up the project in visual studio code.
64
82
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t82.0
nIiHM41PPbQ
I find it more difficult to follow for myself personally but I also don't want to have the code too small because you just won't be able to see anything.
82
91
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t91.0
nIiHM41PPbQ
We can just clean up the main view a little bit and then I'll set up a very basic app as I would have in a production code which if you don't know I have a tutorial that covers my architecture which is basically MVVM model view
91
111
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t111.0
nIiHM41PPbQ
but without the two way binding that's the only difference that I've seen so far so I can call it MVVM but I don't want to call it that because it's not exactly that.
111
123
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t123.0
nIiHM41PPbQ
So I just call it the provider architecture that I came up with so I'm going to set up a basic one of that and I'll just create a new file for the home view.
123
134
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t134.0
nIiHM41PPbQ
So this won't be a follow along tutorial that will come the following week so I might cut out some parts of the code.
134
142
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t142.0
nIiHM41PPbQ
I just wanted to be able to follow the thought that goes into creating the actual final tutorial code so all the steps might not be included but I'll try to keep everything in the app.
142
154
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t154.0
nIiHM41PPbQ
We'll import the tutorial stateless widget. This will be as well put our base view.
154
167
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t167.0
nIiHM41PPbQ
We'll use provider directly.
167
173
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t173.0
nIiHM41PPbQ
We can just add provider. I won't give it a version because it doesn't matter that much.
173
186
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t186.0
nIiHM41PPbQ
So for this we'll use a change notify provider like we always do. And if you don't know what I'm doing over here please watch my architecture tutorial.
186
193
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t193.0
nIiHM41PPbQ
It goes into depth. It's an actual full follow along tutorial. It goes into details about why the architecture is a certain way. You can follow along the steps and then see the reasons why I'm doing the things I'm doing now.
193
206
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t206.0
nIiHM41PPbQ
I'm just going to go through it quickly so we can start with the implementation.
206
211
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t211.0
nIiHM41PPbQ
So home view model class will be home view model that extends the change notify.
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https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t220.0
nIiHM41PPbQ
Change notify is what you use to indicate to your UI side or to your listener that the UI data has been changed.
220
230
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t230.0
nIiHM41PPbQ
And this allows you to rebuild your UI from the state of your model.
230
235
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t235.0
nIiHM41PPbQ
And what we'll use is string of items. I'm just going to expose that string as a property called items and it will return the items.
235
250
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t250.0
nIiHM41PPbQ
And what we'll do is in the constructor we will generate the new items.
250
257
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t257.0
nIiHM41PPbQ
Usually you would fetch this from a function and you'd use the unmodel ready callback and that will allow you to do a sync request where you can show buzz indicator and then fetch all of the items for your model.
257
272
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t272.0
nIiHM41PPbQ
So we'll just generate a list of string. We'll generate 15 items. And each item will return title and the index.
272
292
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t292.0
nIiHM41PPbQ
And that should be it for now. Change notify will be of type home view model.
292
302
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t302.0
nIiHM41PPbQ
The boulder expects a home view model that is created. So we'll just construct a new one.
302
310
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t310.0
nIiHM41PPbQ
And in the child, in this child, this child will have access to the home view model through either using provider of calls or we can use the consumer, which will automatically rebuild whenever you call notify listeners on the model.
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330
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t330.0
nIiHM41PPbQ
This boulder does not take a model. This is actually the UI boulder function. So it gives you a context. It gives you back the model and it gives you back a static child.
330
342
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t342.0
nIiHM41PPbQ
This child you would use this child if you have some UI that will never be changed or updated through this build function and you supply it through the child.
342
352
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t352.0
nIiHM41PPbQ
If I want to supply some text that will stay the same, like my title, that's besides the point.
352
362
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t362.0
nIiHM41PPbQ
And what we want to do here is return a list view.
362
370
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t370.0
nIiHM41PPbQ
And we want to build that item count will be model that items are linked item boulder will give us the context.
370
381
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t381.0
nIiHM41PPbQ
And the index.
381
384
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t384.0
nIiHM41PPbQ
And we will return a container.
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https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t388.0
nIiHM41PPbQ
For now.
388
390
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t390.0
nIiHM41PPbQ
Yeah, so let's do some basic styling.
390
396
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t396.0
nIiHM41PPbQ
Let's do this.
396
400
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t400.0
nIiHM41PPbQ
While the app is ready.
400
403
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t403.0
nIiHM41PPbQ
I want to do the styling while the app is open so that we don't have to go back and adjust anything. Since it is not about the UI, it's just the functionality to keep on requesting more results.
403
416
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t416.0
nIiHM41PPbQ
I want to get to that part quick. So I'll skip all the styling talk or anything like that and we'll get straight.
416
422
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t422.0
nIiHM41PPbQ
So I just want to run the app and once it's up, I'll continue in the home view.
422
427
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t427.0
nIiHM41PPbQ
We just want to have a basic I can actually just start writing the code for it. We'll have a basic container. The height will be 70. The word will be the word will be full. We'll give it some margins.
427
441
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t441.0
nIiHM41PPbQ
I'm going to make the vertical margins more than the side.
441
445
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t445.0
nIiHM41PPbQ
It looks better but also because I want to have more spacing so that when we request our data, you can actually see the things happening instead of all the items being on top of each other.
445
455
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t455.0
nIiHM41PPbQ
So I have 15 items. I'm going to do that. I'm going to give it some decoration.
455
461
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t461.0
nIiHM41PPbQ
Give it a box decoration color will be white.
461
468
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t468.0
nIiHM41PPbQ
We'll give it a box shadow and the shadow will have a blur radius of four and the color will be colors will use gray and we'll use the shade 200.
468
484
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t484.0
nIiHM41PPbQ
And you should see some.
484
488
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t488.0
nIiHM41PPbQ
A fixed shadow. Okay, there we go. And then the child of each container will be model items and will show the index. I think.
488
502
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t502.0
nIiHM41PPbQ
We'll just put that inside of a text which will go to the top left and then we will align that to the center.
502
517
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t517.0
nIiHM41PPbQ
Now as I said earlier, I want to request the new results based on the index of the item.
517
525
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t525.0
nIiHM41PPbQ
So the first thing we need to do is add a callback function in some way that can tell us which item has been created.
525
534
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t534.0
nIiHM41PPbQ
And we'll do that by moving all of our UI for the container itself into its own widget file, which will then allow us to override the init state and then fire off a callback function in a stateful widget that will give us the index of the item that has just been created.
534
554
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t554.0
nIiHM41PPbQ
So we'll do that first and then just print out some values to see if it's working and then we'll continue with the solution for this list item container.
554
562
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t562.0
nIiHM41PPbQ
I want to put that into its own file or call it index away list item.
562
572
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t572.0
nIiHM41PPbQ
Naming will probably change afterwards, but for now that sounds very nice stateful widget and we'll call that index away list item.
572
586
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t586.0
nIiHM41PPbQ
Okay, so I still want the UI to be built on the outside so that you can use this in different lists.
586
592
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t592.0
nIiHM41PPbQ
So we'll pass in the widget that we want to show.
592
595
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t595.0
nIiHM41PPbQ
It'll be final and then we'll pass that to the construction for the bold itself.
595
603
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t603.0
nIiHM41PPbQ
We'll just return the widget.
603
605
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t605.0
nIiHM41PPbQ
Then the other part we want is that we want a function that will tell us item required item created.
605
614
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t614.0
nIiHM41PPbQ
It is a function.
614
615
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t615.0
nIiHM41PPbQ
It takes no parameters and you can pass it in from the outside.
615
618
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t618.0
nIiHM41PPbQ
We want to file off this function once in its state has been called.
618
626
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t626.0
nIiHM41PPbQ
So all we'll do is we'll check if item created is not now based on that, we will execute the function.
626
633
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t633.0
nIiHM41PPbQ
And now on the outside we'll say index away list item for the widget.
633
641
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t641.0
nIiHM41PPbQ
I should have called that child because that is the, I'm going to call it child because that is the convention.
641
650
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t650.0
nIiHM41PPbQ
So the child will be the UI passed in and then.
650
658
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t658.0
nIiHM41PPbQ
So my camera died, this is the first time doing anything with myself in the video so I'm not used to checking anything besides my mic.
658
673
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t673.0
nIiHM41PPbQ
So yeah, where were we?
673
676
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t676.0
nIiHM41PPbQ
Yes, let me restart this guy.
676
680
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t680.0
nIiHM41PPbQ
So we both index away list item and now bold function must never return now.
680
687
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t687.0
nIiHM41PPbQ
So we're going to be using widget.child.
687
691
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t691.0
nIiHM41PPbQ
Okay, so there we go.
691
693
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t693.0
nIiHM41PPbQ
We still have the functionality.
693
695
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t695.0
nIiHM41PPbQ
Now let's just test out the index away part.
695
699
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t699.0
nIiHM41PPbQ
If I go item created, I just want to print out the index item at index created.
699
712
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t712.0
nIiHM41PPbQ
Right.
712
713
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t713.0
nIiHM41PPbQ
So that's, I want to use this so that I can, how do I get this thing back?
713
721
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t721.0
nIiHM41PPbQ
You, I know it's going.
721
726
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t726.0
nIiHM41PPbQ
Control shift you, that's different.
726
729
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t729.0
nIiHM41PPbQ
You see now, so, okay.
729
731
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t731.0
nIiHM41PPbQ
So as I scroll, you can see that certain items are created.
731
735
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t735.0
nIiHM41PPbQ
The last one is 14 and 14 is created pretty early on.
735
741
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t741.0
nIiHM41PPbQ
By the time we get to the 11th item, then the last one is created.
741
748
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t748.0
nIiHM41PPbQ
So there's a three item difference, it seems like we'll, we'll use the full 15.
748
753
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t753.0
nIiHM41PPbQ
So when we get to the 15th item, we want to request new one, meaning when the 15th item is created, we know there's only three left.
753
761
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t761.0
nIiHM41PPbQ
So we want to start requesting the new information.
761
765
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t765.0
nIiHM41PPbQ
The other thing that we can note as well is the fact that if we go back down, it will re-request again.
765
773
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t773.0
nIiHM41PPbQ
So we have to make sure to do, don't request information once it's been requested.
773
786
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t786.0
nIiHM41PPbQ
We'll come up with a solution for that once the original intended solution works.
786
795
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t795.0
nIiHM41PPbQ
I'm just going to minimize this since I couldn't open it with a shortcut.
795
799
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t799.0
nIiHM41PPbQ
We know that's the case now and we are creating 15 items at a time.
799
804
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t804.0
nIiHM41PPbQ
I want to request new items when the index is 15.
804
809
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t809.0
nIiHM41PPbQ
So I am going to create a static const list request threshold.
809
823
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t823.0
nIiHM41PPbQ
It will be an integer, I'll set that to 15.
823
829
https://youtu.be/nIiHM41PPbQ
Flutter Tutorial | Build a continuos scrolling list | My code refactor process
2019-09-20T17:34:59Z
nIiHM41PPbQ-t829.0
nIiHM41PPbQ
And in here, what we'll do is we'll check if the index plus one, meaning the actual count, not the zero index position.
829
841
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