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Diffstat (limited to 'telephony/java/android/provider/Telephony.java')
-rw-r--r--telephony/java/android/provider/Telephony.java18
1 files changed, 10 insertions, 8 deletions
diff --git a/telephony/java/android/provider/Telephony.java b/telephony/java/android/provider/Telephony.java
index 964d3f488a28..76a759f2dd7d 100644
--- a/telephony/java/android/provider/Telephony.java
+++ b/telephony/java/android/provider/Telephony.java
@@ -2068,6 +2068,12 @@ public final class Telephony {
/**
* Helper functions for the "threads" table used by MMS and SMS.
+ *
+ * Thread IDs are determined by the participants in a conversation and can be used to match
+ * both SMS and MMS messages.
+ *
+ * To avoid issues where applications might cache a thread ID, the thread ID of a deleted thread
+ * must not be reused to point at a new thread.
*/
public static final class Threads implements ThreadsColumns {
@@ -2121,14 +2127,10 @@ public final class Telephony {
}
/**
- * Given the recipients list and subject of an unsaved message,
- * return its thread ID. If the message starts a new thread,
- * allocate a new thread ID. Otherwise, use the appropriate
- * existing thread ID.
- *
- * <p>Find the thread ID of the same set of recipients (in any order,
- * without any additions). If one is found, return it. Otherwise,
- * return a unique thread ID.</p>
+ * Given a set of recipients return its thread ID.
+ * <p>
+ * If a thread exists containing the provided participants, return its thread ID. Otherwise,
+ * this will create a new thread containing the provided participants and return its ID.
*/
public static long getOrCreateThreadId(
Context context, Set<String> recipients) {