[CDM] Handle BackgroundServiceStartNotAllowedException being thrown by discovery service.

Bug: 401242686
Test: Unable to reproduce
Flag: EXEMPT bug fix
Change-Id: If5830adff4fe89b92fb4c158afae1c0ac6963ebd

2 files changed, 21 insertions, 9 deletions

diff --git a/packages/CompanionDeviceManager/src/com/android/companiondevicemanager/CompanionAssociationActivity.java b/packages/CompanionDeviceManager/src/com/android/companiondevicemanager/CompanionAssociationActivity.java
index 964268e4ad14..518757dd0d5c 100644
--- a/packages/CompanionDeviceManager/src/com/android/companiondevicemanager/CompanionAssociationActivity.java
+++ b/packages/CompanionDeviceManager/src/com/android/companiondevicemanager/CompanionAssociationActivity.java
@@ -359,11 +359,7 @@ public class CompanionAssociationActivity extends FragmentActivity implements
                 if (CompanionDeviceDiscoveryService.getScanResult().getValue().isEmpty()) {
                     // If the scan times out, do NOT close the activity automatically and let the
                     // user manually cancel the flow.
-                    synchronized (LOCK) {
-                        if (sDiscoveryStarted) {
-                            stopDiscovery();
-                        }
-                    }
+                    stopDiscovery();
                     mTimeoutMessage.setText(getString(R.string.message_discovery_hard_timeout));
                     mTimeoutMessage.setVisibility(View.VISIBLE);
                 }
@@ -455,8 +451,14 @@ public class CompanionAssociationActivity extends FragmentActivity implements
     }
 
     private void stopDiscovery() {
-        if (mRequest != null && !mRequest.isSelfManaged()) {
-            CompanionDeviceDiscoveryService.stop(this);
+        if (mRequest == null || mRequest.isSelfManaged()) {
+            return;
+        }
+
+        synchronized (LOCK) {
+            if (sDiscoveryStarted) {
+                CompanionDeviceDiscoveryService.stop(this);
+            }
         }
     }
 
diff --git a/packages/CompanionDeviceManager/src/com/android/companiondevicemanager/CompanionDeviceDiscoveryService.java b/packages/CompanionDeviceManager/src/com/android/companiondevicemanager/CompanionDeviceDiscoveryService.java
index 50a01b3bc7c9..7b4794506adb 100644
--- a/packages/CompanionDeviceManager/src/com/android/companiondevicemanager/CompanionDeviceDiscoveryService.java
+++ b/packages/CompanionDeviceManager/src/com/android/companiondevicemanager/CompanionDeviceDiscoveryService.java
@@ -136,7 +136,12 @@ public class CompanionDeviceDiscoveryService extends Service {
         intent.setAction(ACTION_START_DISCOVERY);
         intent.putExtra(EXTRA_ASSOCIATION_REQUEST, associationRequest);
 
-        context.startService(intent);
+        try {
+            context.startService(intent);
+        } catch (IllegalStateException e) {
+            Slog.e(TAG, "Failed to start discovery.", e);
+            return false;
+        }
 
         return true;
     }
@@ -144,7 +149,12 @@ public class CompanionDeviceDiscoveryService extends Service {
     static void stop(@NonNull Context context) {
         final Intent intent = new Intent(context, CompanionDeviceDiscoveryService.class);
         intent.setAction(ACTION_STOP_DISCOVERY);
-        context.startService(intent);
+
+        try {
+            context.startService(intent);
+        } catch (IllegalStateException e) {
+            Slog.e(TAG, "Failed to stop discovery.", e);
+        }
     }
 
     static LiveData<List<DeviceFilterPair<?>>> getScanResult() {