android, re-enable manifest alarm code.

android/app/src/main/AndroidManifest.xml

@@ -3,13 +3,14 @@
     xmlns:tools="http://schemas.android.com/tools"
     >
 
+    <!-- Allow notifications to work. -->
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
     <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM"/>
     <uses-permission android:name="android.permission.USE_EXACT_ALARM"/>
 
-    <!--
+    <!-- Allow alarms to work. -->
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
     <uses-permission android:name="android.permission.WAKE_LOCK"/>
     <uses-permission android:name="android.permission.VIBRATE"/>
@@ -25,7 +26,6 @@
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
     <uses-permission android:name="android.permission.WAKE_LOCK"/>
     <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM"/>
-    -->
 
     <application
         android:label="sunset_alarm"
@@ -59,6 +59,7 @@
             android:name="flutterEmbedding"
             android:value="2" />
 
+        <!-- Allow notifications to work. -->
         <receiver
             android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationReceiver"
             android:enabled="true" />
@@ -74,16 +75,14 @@
             </intent-filter>
         </receiver>
 
-        <!--
+        <!-- Allow alarms to work. -->
         <service
             android:name="com.gdelataillade.alarm.AlarmService"
             android:foregroundServiceType="mediaPlayback"
             android:exported="false" />
-
         <receiver
             android:name="com.gdelataillade.alarm.AlarmBroadcastReceiver"
             android:exported="false" />
-
         <receiver
             android:name="com.gdelataillade.alarm.BootBroadcastReceiver"
             android:enabled="false"
@@ -92,7 +91,6 @@
                 <action android:name="android.intent.action.BOOT_COMPLETED" />
             </intent-filter>
         </receiver>
-
         <service
             android:name="dev.fluttercommunity.plus.androidalarmmanager.AlarmService"
             android:permission="android.permission.BIND_JOB_SERVICE"
@@ -111,7 +109,7 @@
                 <action android:name="android.intent.action.BOOT_COMPLETED" />
             </intent-filter>
         </receiver>
-        -->
+
     </application>
     <!-- Required to query activities that can process text, see:
          https://developer.android.com/training/package-visibility and