Clarify docs for the thread used in BroadcastReceiver.onReceive()

Change-Id: Ib6c0da5d0ca2fc95b26b230b306f205a9942cf03

1 files changed, 7 insertions, 3 deletions

diff --git a/core/java/android/content/BroadcastReceiver.java b/core/java/android/content/BroadcastReceiver.java
index b609c26..9ddb2a6 100644
--- a/core/java/android/content/BroadcastReceiver.java
+++ b/core/java/android/content/BroadcastReceiver.java
@@ -446,13 +446,17 @@ public abstract class BroadcastReceiver {
     /**
      * This method is called when the BroadcastReceiver is receiving an Intent
      * broadcast.  During this time you can use the other methods on
-     * BroadcastReceiver to view/modify the current result values.  The function
-     * is normally called within the main thread of its process, so you should
+     * BroadcastReceiver to view/modify the current result values.  This method
+     * is always called within the main thread of its process, unless you
+     * explicitly asked for it to be scheduled on a different thread using
+     * {@link android.content.Context#registerReceiver(BroadcastReceiver,
+     * IntentFilter, String, android.os.Handler)}. When it runs on the main
+     * thread you should
      * never perform long-running operations in it (there is a timeout of
      * 10 seconds that the system allows before considering the receiver to
      * be blocked and a candidate to be killed). You cannot launch a popup dialog
      * in your implementation of onReceive().
-     * 
+     *
      * <p><b>If this BroadcastReceiver was launched through a &lt;receiver&gt; tag,
      * then the object is no longer alive after returning from this
      * function.</b>  This means you should not perform any operations that