👀 Views: 64 💬 Answers: 1 📅 Created: 2025-06-19

android room coroutines Kotlin

I'm refactoring my project and I've been struggling with this for a few days now and could really use some help. I'm experiencing a deadlock scenario when trying to perform a database operation using Room with Kotlin Coroutines on Android 14. I have a repository that retrieves data from the database in a coroutine launched from a ViewModel. The code looks like this: ```kotlin class MyRepository(private val myDao: MyDao) { suspend fun getData(): List<MyEntity> { return myDao.getAllEntities() } } ``` And in my ViewModel, I have: ```kotlin class MyViewModel(private val repository: MyRepository) : ViewModel() { private val _data = MutableLiveData<List<MyEntity>>() val data: LiveData<List<MyEntity>> get() = _data fun loadData() { viewModelScope.launch { try { _data.value = repository.getData() } catch (e: Exception) { Log.e("MyViewModel", "behavior loading data", e) } } } } ``` However, when I call `loadData()` from my Fragment, the app sometimes freezes, leading to an ANR (Application Not Responding) behavior. In my Dao, I have defined `getAllEntities()` like this: ```kotlin @Dao interface MyDao { @Query("SELECT * FROM my_table") suspend fun getAllEntities(): List<MyEntity> } ``` I’ve tried moving database calls to a different coroutine context using `withContext(Dispatchers.IO)` but the deadlock still occurs intermittently. I also validated that there are no other operations that might be holding a lock on the database. I’m using Room version 2.5.0 and Kotlin Coroutines version 1.6.0. Any insights on how to resolve this scenario would be much appreciated! Any ideas what could be causing this? I'm coming from a different tech stack and learning Kotlin. Any feedback is welcome!