From f3351d60b8919c671dec8553d554e56322135083 Mon Sep 17 00:00:00 2001
From: Takafumi Kanda <kanda.t.web@gmail.com>
Date: Sat, 17 Nov 2018 01:19:22 +0530
Subject: [PATCH] Make sure type parameter of Event class is non-null

---
 .../com/google/samples/apps/iosched/shared/result/Event.kt    | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/shared/src/main/java/com/google/samples/apps/iosched/shared/result/Event.kt b/shared/src/main/java/com/google/samples/apps/iosched/shared/result/Event.kt
index 427915348e..685a3d5be9 100644
--- a/shared/src/main/java/com/google/samples/apps/iosched/shared/result/Event.kt
+++ b/shared/src/main/java/com/google/samples/apps/iosched/shared/result/Event.kt
@@ -21,7 +21,7 @@ import androidx.lifecycle.Observer
 /**
  * Used as a wrapper for data that is exposed via a LiveData that represents an event.
  */
-open class Event<out T>(private val content: T) {
+open class Event<out T : Any>(private val content: T) {
 
     var hasBeenHandled = false
         private set // Allow external read but not write
@@ -50,7 +50,7 @@ open class Event<out T>(private val content: T) {
  *
  * [onEventUnhandledContent] is *only* called if the [Event]'s contents has not been handled.
  */
-class EventObserver<T>(private val onEventUnhandledContent: (T) -> Unit) : Observer<Event<T>> {
+class EventObserver<T : Any>(private val onEventUnhandledContent: (T) -> Unit) : Observer<Event<T>> {
     override fun onChanged(event: Event<T>?) {
         event?.getContentIfNotHandled()?.let { value ->
             onEventUnhandledContent(value)