query.kt

  fun getTasks() {

        FindAllTasksQuery.builder()?.build()?.let {
            Utils.getApolloClient(this)?.query(it)
                ?.responseFetcher(ApolloResponseFetchers.NETWORK_FIRST)
                ?.enqueue(object : ApolloCall.Callback<FindAllTasksQuery.Data>() {

                    override fun onFailure(e: ApolloException) {
                        e.printStackTrace()
                        Log.e(TAG, "getTasks ----$e ")
                    }

                    override fun onResponse(response: Response<FindAllTasksQuery.Data>) {
                      //Change the UI accordingly
                        Log.e(TAG, "on Response getTasks : Data ${response.data()}")
                        val result = response.data()?.findAllTasks()

                        result?.forEach { allTasks ->
                            val title = allTasks.title()
                            val desc = allTasks.description()
                            val id = allTasks.id()
                            var firstName = ""
                            var lastName = ""
                            var email = ""
                            var userId = ""
                            allTasks.assignedTo()?.let { query ->
                                firstName = query.firstName()
                                lastName = query.lastName()
                                email = query.email()
                                userId = query.id()
                            } ?: kotlin.run {
                                firstName = ""
                                lastName = ""
                                email = ""
                                userId = ""
                            }
                            val taskOutput = UserOutput(
                                title,
                                desc,
                                id.toInt(),
                                firstName,
                                lastName,
                                userId,
                                email
                            )
                            runOnUiThread {
                                tasksList.add(taskOutput)
                                taskAdapter.notifyDataSetChanged()
                            }
                        }
                    }
              })
        }
    }