The task returns itself (this) so that the caller can keep a reference to it. Running multiple tasks in parallel becomes complicated when the UI needs to be updated. If you truly want parallel execution, you can invoke executeOnExecutor(java.util.concurrent.Executor, Object[]) with THREAD_POOL_EXECUTOR. ... AsyncTask: Serial Execution and Parallel Execution of Task. The point of async task is that the task is asynchronous , meaning that after you call execute() on the task, the task starts running on a thread of its own. Parallel execution of several AsyncTasks. reference: AsyncTask | Android Developers This tutorial shows you how to execute multiple Async task at the same time parallel, and update the listview. vogella. Executes the task with the specified parameters. AsyncTask is an abstract Class and does not inherit the Thread class. Parameter analysis //Generic parameters, customizable public abstract class AsyncTask {} The three types of asynchronous tasks are as follows: Params: The type of parameters sent to the task during execution. AsyncTask enables proper and easy use of the UI thread. It also reporting progress of the running tasks. Android AsyncTask going to do background operation on background thread and update on main thread. The task returns itself (this) so that the caller can keep a reference to it. The parallel task cannot go back in time to return a value to the main thread. asynctask help us to make communication between background thread to main thread. By default, ... package de. Executes the task with the specified parameters. Android AsyncTask. This method is typically used with THREAD_POOL_EXECUTOR to allow multiple tasks to run in parallel on a pool of threads managed by AsyncTask, however you can also use your own Executor for custom behavior. The AsyncTask class allows to run instructions in the background and to synchronize again with the main thread. Executes the task with the specified parameters. Android AsyncTask is an abstract class provided by Android which gives us the liberty to perform heavy tasks in the background and keep the UI thread light thus making the application more responsive. This method is typically used with THREAD_POOL_EXECUTOR to allow multiple tasks to run in parallel on a pool of threads managed by AsyncTask, however you can also use your own Executor for custom behavior.. 1. Understanding Android AsyncTask Async task enables you to implement MultiThreading without get Hands dirty into threads. What the above code does is, for all the parallel requests to be made, it creates a new AsyncTask and instead of executing it using SERIAL_EXECUTOR(by using … Starting with HONEYCOMB, tasks are executed on a single thread to avoid common application errors caused by parallel execution. AlarmClock; BlockedNumberContract; BlockedNumberContract.BlockedNumbers; Browser; CalendarContract; CalendarContract.Attendees; CalendarContract.CalendarAlerts ... 3.1. When the parallel-running task completed, time has also elapsed on the main thread. The task returns itself (this) so that the caller can keep a reference to it. If you truly want parallel execution, you can invoke executeOnExecutor(java.util.concurrent.Executor, Object[]) with THREAD_POOL_EXECUTOR. This method is typically used with THREAD_POOL_EXECUTOR to allow multiple tasks to run in parallel on a pool of threads managed by AsyncTask, however you can also use your own Executor for custom behavior.. 2. ~ reference: AsyncTask | Android Developers In android we cant directly touch background thread to main thread in android development. android.