ReolverActivity: try auto launching single choice

We already does this on start.  Now we also do the same when
the list of options changes.

Test: locally on device
Bug: 34470067
Change-Id: Ib184d67b532c5afd584fb9cd52daac69a7c50d0a
(cherry picked from commit 393c8018a1123f869698269e678876e03a5160ba)

1 files changed, 16 insertions, 1 deletions

diff --git a/core/java/com/android/internal/app/ResolverActivity.java b/core/java/com/android/internal/app/ResolverActivity.java
index b746acb7cf09..0010073a2e91 100644
--- a/core/java/com/android/internal/app/ResolverActivity.java
+++ b/core/java/com/android/internal/app/ResolverActivity.java
@@ -124,6 +124,13 @@ public class ResolverActivity extends Activity {
                 bindProfileView();
             }
         }
+
+        @Override
+        public boolean onPackageChanged(String packageName, int uid, String[] components) {
+            // We care about all package changes, not just the whole package itself which is
+            // default behavior.
+            return true;
+        }
     };
 
     /**
@@ -1502,7 +1509,15 @@ public class ResolverActivity extends Activity {
         }
 
         public void onListRebuilt() {
-            // This space for rent
+            int count = getUnfilteredCount();
+            if (count == 1 && getOtherProfile() == null) {
+                // Only one target, so we're a candidate to auto-launch!
+                final TargetInfo target = targetInfoForPosition(0, false);
+                if (shouldAutoLaunchSingleChoice(target)) {
+                    safelyStartActivity(target);
+                    finish();
+                }
+            }
         }
 
         public boolean shouldGetResolvedFilter() {