Why should you not perform a network operation on the main thread?

To keep your application responsive, it is essential to avoid using the main thread to perform any operation that may end up keeping it blocked. When they are called in the main thread, they are called synchronously, which means that the UI will remain completely unresponsive until the operation completes.

Does service run on main thread Android?

Caution: A service runs in the main thread of its hosting process; the service does not create its own thread and does not run in a separate process unless you specify otherwise. You should run any blocking operations on a separate thread within the service to avoid Application Not Responding (ANR) errors.

Why the network operation should be start in the separate thread in Android networking application?

The single-thread model ensures that the UI is not modified by different threads at the same time. So, if we have to update the ImageView with an image from the network, the worker thread will perform the network operation in a separate thread, while the ImageView will be updated by the UI thread.

Why should you avoid to run non UI code on the main thread?

If you put long running work on the UI thread, you can get ANR errors. If you have multiple threads and put long running work on the non-UI threads, those non-UI threads can’t inform the user of what is happening.

How do I fix network on main thread exception?

Solutions. The solution is to completely wrap any task that attempts to perform actions like download files, connect to remote MySQL database, perform HTTP requests or establish a socket connection into a separate async function.

What is difference between UI thread and main thread?

Originally Answered: What is difference between UI thread and main thread in Android? UI thread is what render UI component/Views. Main thread is what which start the process/app. In Android UI thread is main thread.

What is the difference between service and IntentService in Android?

Service class uses the application’s main thread, while IntentService creates a worker thread and uses that thread to run the service. IntentService creates a queue that passes one intent at a time to onHandleIntent(). Meanwhile, IntentService automatically stops itself when there is no intent in queue.

What is difference between service thread and AsyncTask?

A Thread is a Thread, probably you already know it from other part. You need to know that you cannot update UI from a Thread. You need to use a Handler for this, but read further. An AsyncTask is an intelligent Thread that is advised to be used.

Is it ever okay block the UI thread?

You should never block UI Thread. When you hold UI Thread for too long, this is when the system will show a dialog saying XXX is not responding and ask user to kill your application.

What is network on main thread exception?

android.os.NetworkOnMainThreadException. The exception that is thrown when an application attempts to perform a networking operation on its main thread. This is only thrown for applications targeting the Honeycomb SDK or higher.

What is main thread and worker thread in Android?

People use the word “worker” when they mean a thread that does not own or interact with UI. Threads that do handle UI are called “UI” threads. Usually, your main (primary) thread will be the thread that owns and manages UI. And then you start one or more worker threads that do specific tasks.