apollographql / apollo-kotlin-tutorial

The code for the Apollo Kotlin Tutorial

Apollo Kotlin Tutorial

Repository for the Apollo Kotlin tutorial.

The tutorial is available through our documentation site. This repository contains the corresponding code.

• compose (current): using Jetpack Compose
• views (kept as reference): using the Android Views system. This directory is kept as reference but is not maintained anymore.

For copy errors in the tutorial, please file bugs against the main apollo-kotlin repo. For broken code, please file issues on this repo.

apollo-kotlin-tutorial's Issues

Scalar Verifier isssue

Getting The below issue when response is being converted to data class by apollo:

fromJson(com.apollographql.apollo3.api.json.JsonReader, com.apollographql.apollo3.api.CustomScalarAdapters) failed to verify:ArrayList[data]
at com.nw18.data.repository.ILanguageTranslationRepositoryImpl$getLanguageTranslationData$2.invokeSuspend(ILanguageTranslationRepositoryImpl.kt:26)
	at com.nw18.data.repository.ILanguageTranslationRepositoryImpl$getLanguageTranslationData$2.invoke(Unknown Source:8)
	at com.nw18.data.repository.ILanguageTranslationRepositoryImpl$getLanguageTranslationData$2.invoke(Unknown Source:4)
	at kotlinx.coroutines.flow.SafeFlow.collectSafely(Builders.kt:61)
	at kotlinx.coroutines.flow.AbstractFlow.collect(Flow.kt:230)
	at kotlinx.coroutines.flow.internal.ChannelFlowOperatorImpl.flowCollect(ChannelFlow.kt:195)
	at kotlinx.coroutines.flow.internal.ChannelFlowOperator.collect$suspendImpl(ChannelFlow.kt:167)
	at kotlinx.coroutines.flow.internal.ChannelFlowOperator.collect(Unknown Source:0)
	at kotlinx.coroutines.flow.internal.ChannelFlowTransformLatest$flowCollect$3.invokeSuspend(Merge.kt:27)
	at kotlinx.coroutines.flow.internal.ChannelFlowTransformLatest$flowCollect$3.invoke(Unknown Source:8)
	at kotlinx.coroutines.flow.internal.ChannelFlowTransformLatest$flowCollect$3.invoke(Unknown Source:4)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:89)
	at kotlinx.coroutines.CoroutineScopeKt.coroutineScope(CoroutineScope.kt:264)
	at kotlinx.coroutines.flow.internal.ChannelFlowTransformLatest.flowCollect(Merge.kt:25)
	at kotlinx.coroutines.flow.internal.ChannelFlowOperator.collectTo$suspendImpl(ChannelFlow.kt:157)
	at kotlinx.coroutines.flow.internal.ChannelFlowOperator.collectTo(Unknown Source:0)
	at kotlinx.coroutines.flow.internal.ChannelFlow$collectToFun$1.invokeSuspend(ChannelFlow.kt:60)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
	at kotlinx.coroutines.internal.LimitedDispatcher.run(LimitedDispatcher.kt:42)
	at kotlinx.coroutines.scheduling.TaskImpl.run(Tasks.kt:95)
	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:570)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:677)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:664)
	Suppressed: kotlinx.coroutines.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@317f5d6, Dispatchers.IO]

Add GraphQL to Your Jetpack Compose Apps

The repo for Add GraphQL to Your Jetpack Compose Apps doesn't exist, please check

https://github.com/apollographql/apollo-kotlin-tutorial/tree/compose

Modernize the Tutorial

Make the tutorial use Jetpack Compose by default (keep the view based version as a separate branch).

Following Tutorial - End of Step 1 issue

Following the tutorial here: https://www.apollographql.com/docs/kotlin/tutorial/01-configure-project

At the end of step 1 it says:

Android Studio will display a yellow banner, A project sync may be necessary for the IDE to work properly. Click Sync Now.

If everything goes well, Apollo Kotlin is now added to your project. Next, you will add the GraphQL schema to the project.

Clicks Sync Now

However you get the error

No schema file found in:
src/main/graphql

Which seems to be step 2 of the tutorial. Just a heads up.

---

After completing step 2 (i.e. running the command ./gradlew :app:downloadApolloSchema --endpoint='https://apollo-fullstack-tutorial.herokuapp.com/graphql' --schema=app/src/main/graphql/schema.graphqls), the project sync's successfully.

Cannot find a Java/Kotlin extension, please apply the kotlin or java plugin

Hi! I've been trying to get the tutorial setup for several hours now between yesterday and today. I cloned and followed the initial steps located on here: https://www.apollographql.com/docs/kotlin/tutorial/01-configure-project#clone-the-starter-project

Right away I was getting this error:

I'm getting this error even on the 'main' branch which is supposed to be the "final" and completed project according to the tutorial. I think something may be outdated. I've tried several different methods of "setting up" Kotlin plugins and extensions found on the Kotlin docs, Android docs, and stack overflow, but none fixed this issue for me.