Add hint to indicate 'see more' type content

Test: none
Bug: 68378574
Change-Id: Ifb90b4cf96154b9568811de67d61f9c2a58fb473
diff --git a/api/current.txt b/api/current.txt
index 66e47a03..b70d54e 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -7043,6 +7043,7 @@
     field public static final java.lang.String HINT_MAX = "max";
     field public static final java.lang.String HINT_NO_TINT = "no_tint";
     field public static final java.lang.String HINT_PARTIAL = "partial";
+    field public static final java.lang.String HINT_SEE_MORE = "see_more";
     field public static final java.lang.String HINT_SELECTED = "selected";
     field public static final java.lang.String HINT_SHORTCUT = "shortcut";
     field public static final java.lang.String HINT_SUMMARY = "summary";
diff --git a/core/java/android/app/slice/Slice.java b/core/java/android/app/slice/Slice.java
index b8fb2e3..f8093d5 100644
--- a/core/java/android/app/slice/Slice.java
+++ b/core/java/android/app/slice/Slice.java
@@ -67,6 +67,7 @@
             HINT_TOGGLE,
             HINT_HORIZONTAL,
             HINT_PARTIAL,
+            HINT_SEE_MORE
     })
     @Retention(RetentionPolicy.SOURCE)
     public @interface SliceHint {}
@@ -151,7 +152,11 @@
      * Used to indicate the maximum integer value for a {@link #SUBTYPE_SLIDER}.
      */
     public static final String HINT_MAX = "max";
-
+    /**
+     * A hint representing that this item should be used to indicate that there's more
+     * content associated with this slice.
+     */
+    public static final String HINT_SEE_MORE = "see_more";
     /**
      * Key to retrieve an extra added to an intent when a control is changed.
      */