• Home
  • WordPress
  • web Hosting
    • Free hosting
    • Cheap Hosting
    • comparison cloud , vps, shared, wordpress
    • managed wordpress hosting
    • managed cloud hosting
  • page Speed
  • Deals
  • Services
  • About

RAaz Kumar .com

wordpress tutorials seo hosting etc


AsyncTask

 

 

AsyncTask:
In Android, we have 2 types of threads.
1) UI/Main Thread
2) Worker/Background Thread

UI/Main Thread – This thread is responsible for all the UI related operations. All the View Hierarchy and its operations only on Main Thread. No other threads can touch View Hierarchy other than the UI/Main Thread.

Worker/Background Thread – This is a background thread, which is used for network-based operations, database related huge data operations to ensure the UI Thread is not blocked with lot of operations. We can create any number of background threads and do some operations. We use this thread to achieve parallel computing/processing. This thread cannot perform any UI operations. This can be started from the Main thread, finish its task and reports the result back to Main Thread.

 

To create a worker thread and get some task done and report back to the main thread,
we need to do a lot manual checks. It requires of lot of coding. To overcome this problem, we have AsyncTask in Android.

AsyncTask:

AsyncTask performs following operations.
1) Accepts task from Main thread.
2) Creates worker thread
3) Finishes the task in worker thread
4) Reports result back to Main Thread

 

AsyncTask is a generic class, which accepts 3 types of parameters while it is creating

Params – The type of parameters we pass from main thread to asynctask while we are creating asynctask

Progress – The type of data we want asynctask to update as progress

Result – The type of result data passed after the task is completed from worker thread to main thread

 

Methods in AsyncTask:

1) onPreExecute() – Which is called immediately when the AsyncTask is called, used to perform the operations when the task is created. Runs on Main thread

2) doInBackground(Params) – Called in the background thread after the onPreExecute is called. All the task related code is written here only. This method must be overriden in asynctask

3) onProgressUpdate(Progress) – This will be called when there is a need to update progress on Main thread. This would be called if we call publishProgress() method. It runs on Main thread

4) onPostExecute(Result) – This is the final method to execute. In this method, asynctask delivers result to main thread. Runs on Main Thread

Create AsyncTask:

1) Create a subclass of AsyncTask<Params, Progress, Result>
2) Override doInBackground method – mandatory
3) Override other required methods – optional

Start AsyncTask:

1) Create object of the subclass of AsyncTask
2) Create array of parameters – optional
3) Call execute(params) method – If we have parameters
(or)
Call execute() method – If we don’t have parameters

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Related topics:

  1. Service
  2. SQLiteDatabase
  3. nginx performance tuning
  4. Intent with Result Data
  5. intel i3 vs i5 vs i7 vs i9 (cores, cache size, threads , turbo boost & generation, wattage)

tutorials

  • Vivek Bindra Videos Transcription (business strategy)
  • git commands
  • new relic php agent install in 3 steps
  • new relic mysql install integration - 2 ways fix problems
  • new relic installation linux (infrastructure agent , php, mysql , nginx)
  • xampp tutorials 2021 installation errors fix wordpress phpmyadmin mysql apache
  • Redis performance metrics & tuning for nginx apache ubuntu & debian
  • Devops course Syllabus topics PDF AWS, Azure, cisco, redhat
  • CCNA Syllabus pdf (CCNA / CCNP vs devops vs mcsa /MCSE)
  • how to create a website free of cost on google
  • what is vpn vs proxy vs tor, http vs https, http2, tcp vs udp, kali linux sql source code injection
  • nginx server tutorials (installation, configuration, performance tuning, security)
  • MySQL Tutorial (create,connect database, update tables, export etc) Documentation & TIPS
  • AUdio Editing Background Noise removal (Audacity, Adobe Premiere Addition, Camtasia Filmora Windows Obs)
  • Android Studio tutorials syllabus Topics Course details #AndroidApplicationDevelopment
    • Intent
    • SharedPreferences
    • Location
    • Libraries
    • Webservices
    • Creating Activity class
    • Creating XML
    • Registering Activity in AndroidManifest.xml:
    • Steps for creating an Android application:
    • Handling button clicks
    • Identifying Views
    • Getting Text from Views
    • intent with Data
    • Database with Cursor Adapter
    • Resources Handling in Android
    • Intent with Result Data
    • Broad cast Receiver
    • Fragment
    • Handling Button click by using On Click Listener:
    • Material Design
    • RecyclerView
    • JSON
    • Rename Android Package [with images & video 2020]
    • migrating to androidx (The library & dependency matching)
    • adsense on webview , adsense & admob policies & implementation
    • Fragments Runtime
    • JSON parsing
    • Handling Views
    • RelativeLayout
    • ActionBar
    • ListView
    • Custom List View
    • Dialogs
    • AlarmManager
    • Notifications
    • Vibration
    • WebView
    • Options Menu
    • SQLiteDatabase
    • Bluetooth
    • WiFi
    • Google Maps
    • Handling Activity Back Button
    • AsyncTask
    • Runtime Permissions
    • Logging
    • Activity Lifecycle
    • Toast
    • Service
  • [INTRO] Ethical hacking / cyber Security / Penetration testing Tutorial -{updates frequently}
  • redis install ubuntu 20.04 with wordpress php redis mysql configuration
  • ubuntu tutorials installation download issues etc
  • Php tutorials
  • HTML & CSS Tutorials
  • Core Java Tutorial Free online
  • Linux sysadmin tutorials linux system administrator
  • apache server tutorial (install,config, performance tuning, security, error handling)

 

 

wordpress Pagespeed optimization

Digitalocean free $100 Credit

Cloudways Review pricing promo codes

Siteground cpu limits Pricing

Shared Hosting

Managed wordpress Hosting

Managed Hosting Cloud server

VPS Hosting

Cloud Hosting – Unmanaged

Google cloud Pricing

Aws Pricing

Azure pricing

nginx server tutorials

apache server tutorials

linux sysadmin tutorials

mysql Commands list pdf

LEMP Install Ubuntu

Mysql Performance Tuning

Nginx Performance tuning

Linux Performance tuning

Php -fpm performance tuning

Redis Performance tuning

linux server security

nginx security best practices

wordpress security plugins

 

 

wordpress

 

Top 5  WP Google Analytics Plugins

WP Backup Plugins

Wp Comment Plugins

Top wordpress Security Plugins

WP Seo Plugins

WP Caching Plugins

Best Adsense Plugins for WordPress

Wp social Sharing Plugins

autoshare social media plugins

WP speed Optimization Plugins

Speedup WordPress google Score

More Wp tuts

Server Admin Cloud

 

Installing Nginx LEMP On ubuntu

Installing apache Lamp ubuntu

nginx fastcgi cache enable

php – fpm install  & Configuration

Opcache install & Configure

php -fpm pool manager explained

Mysql Install & Configuration

Redis Object cache install & configure

 

Nginx as Reverse Proxy and Load balancer

Load Balance / auto scaling in google cloud

Linux Commands PDF

Mysql Commands Pdf

Letsencrypt tutorial

mysqldump export & import 

Pagespeed Module install & configure

nginx.conf best file

mysql.conf best file

upgrade ubuntu

© 2023 - All Rights Reserved Disclaimer & Privacy Policy