Handle multiple Activities matching eSOS intent

We should be able to handle multiple emergengy sos activities on the
device without showing a disambig dialog. This CL adds a config string
to set the package name of the preferred app to handle the emergengy sos
intent (not using RoleManager#ROLE_EMERGENCY since SysUI doesn't have
the necessary permission).

The preference is given to the activity as follows:

1. Activity is from a system app with package name matching new config string
2. Activity is from a system app
3. Gesture becomes a no-op (will not match non-system activities)

Test: manual {StatusBar makes testing a launched activity
challenging}

Bug: 181610572
Change-Id: I862b4e3edf990d5f011aa0dc073070ede8b474b1

packages/SystemUI/res/values/config.xml

@@ -577,6 +577,9 @@
     <!-- Whether wallet view is shown in landscape / seascape orientations -->
     <bool name="global_actions_show_landscape_wallet_view">false</bool>
 
+    <!-- Package name of the preferred system app to perform eSOS action -->
+    <string name="config_preferredEmergencySosPackage" translatable="false"></string>
+
     <!-- Whether to use the split 2-column notification shade -->
     <bool name="config_use_split_notification_shade">false</bool>
 

packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java

@@ -95,6 +95,7 @@ import android.provider.Settings;
 import android.service.dreams.DreamService;
 import android.service.dreams.IDreamManager;
 import android.service.notification.StatusBarNotification;
+import android.text.TextUtils;
 import android.util.ArraySet;
 import android.util.DisplayMetrics;
 import android.util.EventLog;
@@ -4071,7 +4072,9 @@ public class StatusBar extends SystemUI implements DemoMode,
     private @Nullable Intent getEmergencyActionIntent() {
         Intent emergencyIntent = new Intent(EmergencyGesture.ACTION_LAUNCH_EMERGENCY);
         PackageManager pm = mContext.getPackageManager();
-        ResolveInfo resolveInfo = pm.resolveActivity(emergencyIntent, /*flags=*/0);
+        List<ResolveInfo> emergencyActivities = pm.queryIntentActivities(emergencyIntent,
+                PackageManager.MATCH_SYSTEM_ONLY);
+        ResolveInfo resolveInfo = getTopEmergencySosInfo(emergencyActivities);
         if (resolveInfo == null) {
             Log.wtf(TAG, "Couldn't find an app to process the emergency intent.");
             return null;
@@ -4082,6 +4085,34 @@ public class StatusBar extends SystemUI implements DemoMode,
         return emergencyIntent;
     }
 
+    /**
+     * Select and return the "best" ResolveInfo for Emergency SOS Activity.
+     */
+    private @Nullable ResolveInfo getTopEmergencySosInfo(List<ResolveInfo> emergencyActivities) {
+        // No matched activity.
+        if (emergencyActivities == null || emergencyActivities.isEmpty()) {
+            return null;
+        }
+
+        // Of multiple matched Activities, give preference to the pre-set package name.
+        String preferredAppPackageName =
+                mContext.getString(R.string.config_preferredEmergencySosPackage);
+
+        // If there is no preferred app, then return first match.
+        if (TextUtils.isEmpty(preferredAppPackageName)) {
+            return emergencyActivities.get(0);
+        }
+
+        for (ResolveInfo emergencyInfo: emergencyActivities) {
+            // If activity is from the preferred app, use it.
+            if (TextUtils.equals(emergencyInfo.activityInfo.packageName, preferredAppPackageName)) {
+                return emergencyInfo;
+            }
+        }
+        // No matching activity: return first match
+        return emergencyActivities.get(0);
+    }
+
     boolean isCameraAllowedByAdmin() {
         if (mDevicePolicyManager.getCameraDisabled(null,
                 mLockscreenUserManager.getCurrentUserId())) {