Hi i am trying to get data from my database but i ...

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[RX]

Hi i am trying to get data from my database but i am getting error Caused by: java.lang.IllegalStateException: Cannot invoke setValue on a background thread this is my code written on Java (Im new on Android), someone knows why it’s the problem whit my line?

[RX]

Im using retrofit 🤔

[Valentin Moscone]

do you have a postValue() ? (i do not know exactly what libraries are you using)

[Ian Lake]

doInBackground() is, as the name implies, on a background thread. Sounds like you should be returning that object and doing the setValue in onPostExecute() which is what runs on the main thread

[RX]

For get the data Im using retrofit \

[Ian Lake]

That's kind of the entire reason those are separate methods

[RX]

Im using this libraries but i not have idea how I can solve this error )

[Casey Brooks]

AsyncTask is now officially deprecated since Android 11, so you should consider converting that class to Kotlin and using Coroutines to manage async Retrofit API calls instead.

[Casey Brooks]

But since you’re posting the value to a LiveData, you can use .postValue() to set the value from a background thread and it should work (though I’d consider that a code smell)

[okarm]

@RX Would you mind telling us how you even got to using an AsyncTsk? This thing fell out of favor a good few years ago.

Where did you learn about AsyncTask? Because that tutorial needs to be taken down.