From 42a7d1af83b317076afc16f5ff8e142c828bf613 Mon Sep 17 00:00:00 2001
From: vadimt <vadimt@google.com>
Date: Mon, 2 Aug 2021 10:38:12 -0700
Subject: [PATCH] Band-aid for getHomeActivities returning null

It can return null immediately after android.intent.action.ACTION_PREFERRED_ACTIVITY_CHANGED
notification.

Test: local
Bug: 187080582
Change-Id: I8625fdfc0add57fed832bdca4713747a005bf08c
---
 .../quickstep/OverviewComponentObserver.java        | 13 +++++++++++++
 .../com/android/quickstep/FallbackRecentsTest.java  |  1 +
 src/com/android/launcher3/testing/TestProtocol.java |  1 +
 3 files changed, 15 insertions(+)

diff --git a/quickstep/src/com/android/quickstep/OverviewComponentObserver.java b/quickstep/src/com/android/quickstep/OverviewComponentObserver.java
index 0efe6666a8..780032e11b 100644
--- a/quickstep/src/com/android/quickstep/OverviewComponentObserver.java
+++ b/quickstep/src/com/android/quickstep/OverviewComponentObserver.java
@@ -33,8 +33,11 @@ import android.content.IntentFilter;
 import android.content.pm.ActivityInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
+import android.os.SystemClock;
+import android.util.Log;
 import android.util.SparseIntArray;
 
+import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.tracing.OverviewComponentObserverProto;
 import com.android.launcher3.tracing.TouchInteractionServiceProto;
 import com.android.launcher3.util.SimpleBroadcastReceiver;
@@ -129,6 +132,16 @@ public final class OverviewComponentObserver {
     private void updateOverviewTargets() {
         ComponentName defaultHome = PackageManagerWrapper.getInstance()
                 .getHomeActivities(new ArrayList<>());
+        if (TestProtocol.sDebugTracing && defaultHome == null) {
+            Log.d(TestProtocol.THIRD_PARTY_LAUNCHER_NOT_SET, "getHomeActivities returned null");
+            while ((defaultHome =
+                    PackageManagerWrapper.getInstance().getHomeActivities(new ArrayList<>()))
+                    == null) {
+                SystemClock.sleep(10);
+            }
+            Log.d(TestProtocol.THIRD_PARTY_LAUNCHER_NOT_SET,
+                    "getHomeActivities returned non-null: " + defaultHome);
+        }
 
         mIsHomeDisabled = mDeviceState.isHomeDisabled();
         mIsDefaultHome = Objects.equals(mMyHomeIntent.getComponent(), defaultHome);
diff --git a/quickstep/tests/src/com/android/quickstep/FallbackRecentsTest.java b/quickstep/tests/src/com/android/quickstep/FallbackRecentsTest.java
index a683d01f6c..45e7e695a4 100644
--- a/quickstep/tests/src/com/android/quickstep/FallbackRecentsTest.java
+++ b/quickstep/tests/src/com/android/quickstep/FallbackRecentsTest.java
@@ -98,6 +98,7 @@ public class FallbackRecentsTest {
         mDevice = UiDevice.getInstance(instrumentation);
         mDevice.setOrientationNatural();
         mLauncher = new LauncherInstrumentation();
+        mLauncher.enableDebugTracing();
         // b/143488140
         //mLauncher.enableCheckEventsForSuccessfulGestures();
 
diff --git a/src/com/android/launcher3/testing/TestProtocol.java b/src/com/android/launcher3/testing/TestProtocol.java
index 2f1f82d9f7..71046be44d 100644
--- a/src/com/android/launcher3/testing/TestProtocol.java
+++ b/src/com/android/launcher3/testing/TestProtocol.java
@@ -110,4 +110,5 @@ public final class TestProtocol {
     public static final String PERMANENT_DIAG_TAG = "TaplTarget";
     public static final String WORK_PROFILE_REMOVED = "b/159671700";
     public static final String FALLBACK_ACTIVITY_NO_SET = "b/181019015";
+    public static final String THIRD_PARTY_LAUNCHER_NOT_SET = "b/187080582";
 }