SearchRepo | Github repo listing application | Awesome List library
kandi X-RAY | SearchRepo Summary
kandi X-RAY | SearchRepo Summary
Github repo listing application.
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QUESTION
Is background threading managed automatically with PagingData
as it is with PagedList
, and then returned on the main thread?
From the logs below, it appears PagingData
is not run on the backgroud thread in the Paging 3 library compared to PagedList
in Paging 2's library.
Expect (Based on the Paging Codelab sample)
- GithubPagingSource
override suspend fun load(...)
to run on an IO thread. - SearchRepositoriesActivity
viewModel.searchRepo(query).collectLatest { ... }
to run on the main thread.
Observe
- Both GithubPagingSource
override suspend fun load(...)
and SearchRepositoriesActivityviewModel.searchRepo(query).collectLatest { ... }
run on the main thread.
Threading is handled on the background by PagedList
with toLiveData
according to the documentation.
Paging 3If you use LivePagedListBuilder to get a LiveData, it will initialize PagedLists on a background thread for you.
The Paging 3 documentation does not mention how threading is managed. However, from the logs, PagingSource
appears to be running the network request on a main thread and returning the PagingData
on a main thread.
I've recreated the Codelab pattern in the CryptoTweets sample app app-simple module.
FeedPagingSource.kt
...ANSWER
Answered 2020-Sep-21 at 04:26When implementing PagingData
and PagingSource
with Kotlin Coroutines and making a Retrofit network request, as in the sample code above, Retrofit handles the background threading by default and returns on the main thread.
See StackOverflow: Does Retrofit make network calls on main thread?
RxJavaWhen using RxJava with Retrofit as the network source, the threading needs to be explicitly specified as shown in the Android documentation sample.
See Android documentation: Page from network and database > Implement a RemoteMediator
QUESTION
I implemented a paging library and it does not work quite as it should. I request data from the github and paginate the list of repositories. The code works well, but after several changes to the search query, it stops loading data. In the debug, the data always loads well. I guess the problem is asynchrony, but I can’t figure out where to look. My code:
RepoDataSource
...ANSWER
Answered 2020-Feb-13 at 16:04There is nothing wrong with your code. I was on a GitHub project, and was stuck in the same problem until I realize GitHub has a Rate Limit of 10 requests per minute for unauthenticated requests. But if it is an authenticated one, you can make up to 30 requests per minute.
I assume you also send request for every changes in the search query, just like I did, where typing/changing 5 characters equals 5 requests. So the real cause is the very limited request rate from GitHub, not your code.
Check this out: https://developer.github.com/v3/search/#rate-limit
QUESTION
I'm trying to achieve something similar to scenario presented below (create URL, request to server, decode json, error on every step wrapped in custom NetworkError
enum):
ANSWER
Answered 2020-Jan-14 at 18:14I don't think your approach is unreasonable. A benefit of the first mapError()
(at // 1
) is that you don't need to know much about the possible errors from the request.
QUESTION
I am making database app using room, mvvm, livedata
. I have Prepopulated it with some data. Now i have two options either i am going to show that prepoulated data when app turns on via recyclerview
or show it when i search it using SearchView
inside recyclerView.
The Problem is when i search for particular item, itw shows that item when i complete my word and when i try to go back either my resView back empty or it always stays on that item. i wanna try sometime realtime like: when i enter only one alphabet it show all the suggestions belongs to alphabet, i only want to update with livedata
What i have try?
1-> I have already tried switchMap
which worked with liveData
but i have to refresh my activity in order to get back my list.
2-> I have tried resView filter which didn't worked because i am using livedata to update my UI and also give it regular try without livedata
it still didn't work either.
3-> I Have tried regular editText
just to try but i didn't find it useful as facing same problem, my main focus was on searchView
RecyclerView code with filterable or just ignore filterable part it wasn't good try at all
ANSWER
Answered 2019-Nov-21 at 12:17Please change your @Dao class like this
QUESTION
I want to use a WebWorker inside a WebExtension on a Azure DevOps Server.
Processing data of a large repository cost a lot, so I want to use a WebWorker to calculate in Background.
But when I call new Worker("static/js/WorkerLoadTree.js")
:
ANSWER
Answered 2019-Sep-05 at 13:07DOMException: Failed to construct 'Worker': Script at 'http://136.310.18.216:8070/_apis/xxxx/static/js/WorkerLoadTree.js' cannot be accessed from origin 'null'.
This is a very normal error about access file across domain. Use web worker has one limitation : Same Origin Policy. And also the browser does not allow to create a worker with a URL which pointing to a different domain. This "across domain" error caused by your call way is not correct.
QUESTION
I must make get request http://192.168.43.240/n/LED=OFF
but retrofit makes http://192.168.43.240/n?/LED=OFF
. It adds question mark after /n.
ANSWER
Answered 2019-Mar-06 at 17:46@GET("n") fun searchRepos(@Query("LED") query: string): Call
QUESTION
I'm trying to build an app that searches GitHub repositories. And I'm using MVVM and Moya. When I call a method to search I get table view reloaded before a server responds.
So the app flow should be:
A user types in a search query into the search bar. In searchBarSearchButtonClicked(_:)
of SearchViewController
called my method to search. The method is inside SearchViewModel
. So view model's method triggers RepositoryService
and then NetworkService
.
I put some print statements to see an order of execution. And in the console, I got: 2 3 4 (Here the table view is refreshing) 1
. I've tried to use GCD in different places, also I tried to use barriers. At the end of the day, the table view is still refreshing before print(1)
is called.
SearchViewController:
...ANSWER
Answered 2019-Jan-24 at 10:40Your issue is basically that you are not handling async requests properly.
Consider the code:
QUESTION
I am working on an ASP.NET MVC project, and I am trying to use DataTables . I am capturing the form post during Html.BeginForm() operation and am trying to bind my ViewModel during the DataTables AJAX post operation. The problem is that my ViewModel is always empty. Can you please find out what I am doing wrong? Thanks!
Code: MVC View
...ANSWER
Answered 2019-Jan-16 at 17:29Turns out i needed to use a JQuery plugin and modify my code slightly. Here is what I did:
QUESTION
I recently jumped in Android Unit testing and I'm still struggling in writing my unit tests. I'm trying to test my Presenter, specifically a method that returns a list of repositories from Github Api, but I keep getting a Null Pointer Exception and I don't understand why.
RepositoriesPresenter method I want to unit test:
...ANSWER
Answered 2019-Jan-03 at 11:13as your repository is a mocked instance, you'll need to mock the responses for all of its methods. This includes these two:
QUESTION
Note: I'm using () instead of angle brackets <> for data types as couldn't find a way to have them working here on the forum.
I have a MVP android application that uses Retofit2 and RxJava2 to get data from the GitHub Api. The code is working fine and I'm able to recover an Observable(Response(List(Headers))), where Response is from Retrofit2 and Headers form OkHttp3.
But when it comes to unit test that, I've encountered an issue: I'm not able to mock a Response(List(Headers)). Retrofit2 Response class has a private constructor so I just can't create an instance of that. I tried then to use OkHttp MockWebServer with the idea of having a MockResponse(List(Headers)). Despite I can set Headers to the MockResponse instance, I wasn't able to get a MockResponse(List(Headers))
My service:
...ANSWER
Answered 2019-Jan-07 at 11:19Creating a mock response is pretty straightforward using retrofit's own Response object. As you said the constructor is private, but you can create successful responses using the static methods:
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