asyntask | lightweight asynchronous queue manager | Reactive Programming library
kandi X-RAY | asyntask Summary
kandi X-RAY | asyntask Summary
asyntask是一个轻量级异步任务队列管理器,支持实时,定时,长时和周期任务。A lightweight asynchronous queue manager, supporting real-time, timing, long-term, periodic tasks.
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Top functions reviewed by kandi - BETA
- Get current task
- Add a loop task
- Add a long task
- Add a task
- Add a time task
- Insert data into the database
- Save record to database
- Get the current task
asyntask Key Features
asyntask Examples and Code Snippets
Community Discussions
Trending Discussions on asyntask
QUESTION
I'm studying RxJava to see if I can use it to replace the deprecated AsynTasks in an application created several years ago.
my use case is as follows:
- make an http request on Schedulers.io that returns some rows
- process the rows separately, in parallel threads
- update the UI on main thread only when all rows have been processed
is there a way to do step 2 easily in rx java?
Below is a code example.
Thanks
...ANSWER
Answered 2021-Jun-03 at 16:43After several attempts I came to this solution.
By adding logs to the processRow function I saw that it is called in parallel for multiple rows, as always, at the end the onComplete is called.
QUESTION
I have implemented a RecyclerView
to display a list of Contacts (200 approximately). A user can select multiple items. The selection make visible a tick to indicate to the user the selected contacts. However, when the user select a item, the tick appears on several non-selected items. The frequency of occurrence is the same.
Could you tell me what I am doing wrong. Thanks !
Here is my implementation :
I have an activity called NewAppointmentActivity which contains a fragment called NewAppointmentPhoneContactsFragment. This fragment is a RecyclerView :
File fragment_new_appointment_phone_contacts.xml
...ANSWER
Answered 2020-Dec-23 at 22:38Add the else
branch in the onBindViewHolder
to avoid the repetition of the visible ticked items while recycling views
QUESTION
How to use Asynctask correctly in this case? So in some App I've got the exception: "android.os.NetworkOnMainThreadException"
And one way to solve it are using Asynctask
But how to use it in this case?
...ANSWER
Answered 2020-Nov-03 at 07:40If you need todo a simple work in background do not use deprecated AsyncTask
use Executors
.
QUESTION
Following this tutorial I tried to add French language in my app which is currently in English, (Not by changing the system language)
I added the translation in a separate strings file
It seems the problem is in my code. I'm not sure If I have to rewrite the same function in all my activity for it to work here is the code for switching language
Edit 2 : commenting this line fix the crash issue but the language is not updating. Only the toast messages change to french but the UI layout isn't
...ANSWER
Answered 2020-Sep-02 at 18:06getActivity()
return null
The best to prevent your activity being null is to keep activity reference when onAttach
is called and use the activity reference wherever needed.
Ex:
QUESTION
I am having an error with RecyclerView
where RecyclerView
works fine on the first run but if I push get_data button again to change the data list randomly it does not always on the second attempt may on the third instance or fourth or fifth it causes the app to crash. Errors are also random like
ANSWER
Answered 2020-Jul-08 at 06:20in doInBackground
everything is executed on the background thread, while onPreExecute
and onPostExecute
are executed on UI thread.
So your recyclerview is null because you are running operation on background thread
You can add runOnUiThread
callback inside doInBackground
to execute things on the UI thread.
Like this
QUESTION
I'm currently studying android on my own and pretty new to java. I'm wondering how AsyncTask works like this: onPreExecute()
-> doInBackground()
-> onPostExecute()
. When I look at others define their AsynTask, it seems like only method is declared in their code with no calls upon the method. I can't figure out how doInBackground()
comes after onPreExecute()
with no code that links both like:
ANSWER
Answered 2020-Jun-12 at 09:49Yes, you are correct. The logic is onPreExecute() -> doInBackground() -> onPostExecute()
You can read this article for a better understanding even though it's using Javascript to explain it.
QUESTION
In an Android application, by clicking a button, in a fragment, I want to show an AlertDialog using AsynTask() method. I have put, in onPreExecute()
, the function which called the AlertDialog
. In doInBackground()
, there is a task running, and in onPostExecute()
, I dismiss the AlertDialog
.
The crash occurs just when I click the button. And it refers to line code in the LoadingDialog class, which is dialog.show();
. I have tried many suggestions given on the site, but, the issue occurs again.
Could anyone help me?
This is the LoadingDialog.java
ANSWER
Answered 2020-May-29 at 15:11You are showing a toast in the doInBackground()
of the AsyncTask, and this cannot be done. You can only update the Ui in the main thread.
Showing the toast in the doInBackground()
which is running in a background thread throws a exception and your fragment is forced to shutdown at that moment but the dialog is still open which caused the exception.
So try calling the Toast.makeText(view.getContext(), "Valeur de s = "+ s, Toast.LENGTH_LONG).show() ;
in the onPostExecute
of AsyncTask.
Here is how to do the AsyncTask part.
QUESTION
I am trying to show a list of data coming from a json file from a server.
When I try to select the view by Id it throws error.
...ANSWER
Answered 2020-Apr-27 at 05:48You can try this approach.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install asyntask
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