Difference between AsyncTask and Thread

Different between AsyncTask and Thread in Android  

• What is Thread ?
  • Thread is a small part of process.
  • Generally we are using thread when we want to perform more than one task at a time.
  • In Java programming thread is a in build facility so it is easy to implement and use thread in android.
  • Java/ Android also supports multi-threading
  • There are two ways of implementing Threads.
  1. Direct an instance of class named Thread
     i.e. java.lang.Thread
  2. By using Runnable interface
     public class RunnableThread implements Runnable
  • Life cycle of Thread
    New -> Runnable -> Running -> Waiting/Blocked/Sleeping.

 

What is AsyncTask ?

• AsyncTask is a combination of Thread and Runnable that enable background processing that will allow you to publish result without manipulated Thread and Handler.
• AsyncTask will started using execute() method.
• Use of AsyncTask
1. While loading image from URL.
2. Performing parsing.
3. Want to display some process is going on.
4. etc..
• Flow of Asynctask execution onPreExecute() -> doInBackground() -> onPostExecute()

Difference between AsyncTask and Thread

Asynctask

Thread

 

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