CODEWITHSUNDEEP
androidkotlingradlecoroutinekotlin-coroutines
efoc
efoc

Reputation: 641

Android Kotlin: Error when using 'suspend' in DAO - Following CodeLabs guide

I have been following this guide by CodeLabs and on this section it shows using the 'suspend' keyword in the DAO methods but when I do it I get this error:

error: To use Coroutine features, you must add `ktx` artifact from Room as a dependency. androidx.room:room-ktx:<version>
    public abstract java.lang.Object deleteAll(@org.jetbrains.annotations.NotNull()
    public abstract java.lang.Object insert(@org.jetbrains.annotations.NotNull()
                                     ^

I checked online but people are saying that you can't use coroutines in with DAO methods.

I also added all the build.gradle imports that come before this step here.

Upvotes: 3

Views: 1645

Answers (2)

Haris
Haris

Reputation: 4230

The issue started after migration from Groovy to Kotlin DSL.

I have tried many combinations between Kotlin, Room, and Coroutines versions, but it didn't help.

My workaround was to upgrade Room to the latest beta version, 2.6.0-beta01.

Upgrading to beta was not anything critical in my case, but I would not recommend it for some production fixes.

Upvotes: 0

efoc
efoc

Reputation: 641

Okay, I found out what was the issue. Even though I added the coroutine files to the build.grade files, I needed to add Room's specific coroutines file as well which is:

implementation "androidx.room:room-ktx:2.2.5"

This would be to use coroutines with DAO methods.

I was confused as I thought I added all the necessary files in the previous step.

Upvotes: 7

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