What does the main thread do in Android?
The main thread is responsible for dispatching events to the appropriate UI widgets, as well as communicating with Android UI Toolkit components. To keep your application responsive, it is essential to avoid using the main thread to perform any operations that might end up keeping it blocked.
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Can setValue be called from a background thread?
So be careful if you work on background threads. setValue() is called directly from the caller’s thread, synchronously notifying watchers and changing the LiveData value immediately. It can only be called from MainThread.
Are there two rules for single threaded Android?
So there are simply two rules to Android’s single-threaded model: Because of the single-threaded model described above, it’s vital to the responsiveness of your app’s UI that you don’t block the UI thread. Username.
How to update textview in thread in Android?
I want to make a simple timer in Android that updates a TextView every second. Just count the seconds like in Minesweeper. The problem is when I ignore tvTime.setText(…) (make it //tvTime.setText(…), in LogCat it will print the next number every second.
What happens when a thread is blocked in Android?
Worse still, if the UI thread hangs for more than a few seconds (about 5 seconds today), the user is presented with the infamous “application not responding” (ANR) dialog. The user could then decide to exit your application and uninstall it if they are not satisfied. Also, the Android UI Toolkit is not thread-safe.
When to stop service in android threading method?
With Service, it is your responsibility to stop it when its work is complete by calling the stopSelf() or stopService() method. Like Service, IntentService runs on a separate thread and stops automatically after completing its work. IntentService is generally used for short tasks that don’t need to be attached to any UI.