Never disable DnD receiver to dislay condition correctly.

Bug: 30360853
Change-Id: I3e470c2955d7f066970442e281f9d66b153b8d10

src/com/android/settings/dashboard/conditional/Condition.java

@@ -38,6 +38,12 @@ public abstract class Condition {
     // All conditions must live in this package.
     Condition(ConditionManager manager) {
         mManager = manager;
+        Class<?> receiverClass = getReceiverClass();
+        if (receiverClass != null && shouldAlwaysListenToBroadcast()) {
+            PackageManager pm = mManager.getContext().getPackageManager();
+            pm.setComponentEnabledSetting(new ComponentName(mManager.getContext(), receiverClass),
+                    PackageManager.COMPONENT_ENABLED_STATE_ENABLED, 0 /* flag */);
+        }
     }
 
     void restoreState(PersistableBundle bundle) {
@@ -93,6 +99,10 @@ public abstract class Condition {
     }
 
     private void onSilenceChanged(boolean silenced) {
+        if (shouldAlwaysListenToBroadcast()) {
+            // Don't try to disable BroadcastReceiver if we want it always on.
+            return;
+        }
         Class<?> clz = getReceiverClass();
         if (clz == null) {
             return;
@@ -109,6 +119,10 @@ public abstract class Condition {
         return null;
     }
 
+    protected boolean shouldAlwaysListenToBroadcast() {
+        return false;
+    }
+
     public boolean shouldShow() {
         return isActive() && !isSilenced();
     }

src/com/android/settings/dashboard/conditional/DndCondition.java

@@ -26,6 +26,7 @@ import android.os.PersistableBundle;
 import android.provider.Settings;
 import android.provider.Settings.Global;
 import android.service.notification.ZenModeConfig;
+
 import com.android.internal.logging.MetricsProto.MetricsEvent;
 import com.android.settings.R;
 
@@ -143,4 +144,9 @@ public class DndCondition extends Condition {
             }
         }
     }
+
+    @Override
+    protected boolean shouldAlwaysListenToBroadcast() {
+        return true;
+    }
 }