Add @NonNull to BackgroundThread methods

Change-Id: Idd007e21852e184db24e53a6b47c7f2a1d7b6a77
Flag: DOCS_ONLY

1 files changed, 4 insertions, 0 deletions

diff --git a/core/java/com/android/internal/os/BackgroundThread.java b/core/java/com/android/internal/os/BackgroundThread.java
index b75daeda480c..79996e56b689 100644
--- a/core/java/com/android/internal/os/BackgroundThread.java
+++ b/core/java/com/android/internal/os/BackgroundThread.java
@@ -16,6 +16,7 @@
 
 package com.android.internal.os;
 
+import android.annotation.NonNull;
 import android.os.Handler;
 import android.os.HandlerExecutor;
 import android.os.HandlerThread;
@@ -53,6 +54,7 @@ public final class BackgroundThread extends HandlerThread {
         }
     }
 
+    @NonNull
     public static BackgroundThread get() {
         synchronized (BackgroundThread.class) {
             ensureThreadLocked();
@@ -60,6 +62,7 @@ public final class BackgroundThread extends HandlerThread {
         }
     }
 
+    @NonNull
     public static Handler getHandler() {
         synchronized (BackgroundThread.class) {
             ensureThreadLocked();
@@ -67,6 +70,7 @@ public final class BackgroundThread extends HandlerThread {
         }
     }
 
+    @NonNull
     public static Executor getExecutor() {
         synchronized (BackgroundThread.class) {
             ensureThreadLocked();