commit c2ee76bc4d96f6b0dafcc97e211a85d7182a5d38
author Nitin Shivpure <nshivpur@codeaurora.org> Wed Jun 21 19:09:49 2017 +0530
committer Nitin Shivpure <nshivpur@codeaurora.org> Fri Jun 23 15:39:05 2017 +0530
tree dfb731aa0a278d7d04cf006102698f47677b3fac
parent 9eb64377c70e1161853c33fcc89608f32c35b29f

FM: Convert notifications to use NotificationChannel

Usecase:
Turn on FM or scan for channels

Expected Behaviour:
Notification popup for FM should be displayed on Notification UI

Observed Behaviour:
Notification popup for FM is not displayed on Notifcation UI &
(developer warning)Toast message is shown on FM radio screen
while showing notification

Root cause:
In Android O, notifications are hidden by default.
This must be changed to use notification channels so that the
priority of the notifications can be updated.

Fix:
Add notification channel before building notification from FM.

CRs-fixed: 2063780
Change-Id: I13cd782ac0bdd4ec8bc2097f7f874a1ae1fb246b

fmapp2/src/com/caf/fmradio/FMRadioService.java

diff --git a/fmapp2/src/com/caf/fmradio/FMRadioService.java b/fmapp2/src/com/caf/fmradio/FMRadioService.java
index cbd713a..a40700d 100644
--- a/fmapp2/src/com/caf/fmradio/FMRadioService.java
+++ b/fmapp2/src/com/caf/fmradio/FMRadioService.java
@@ -35,6 +35,7 @@
 
 import android.app.AlarmManager;
 import android.app.Notification;
+import android.app.NotificationChannel;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.Service;
@@ -111,6 +112,7 @@
 
    private static final int FMRADIOSERVICE_STATUS = 101;
    private static final String FMRADIO_DEVICE_FD_STRING = "/dev/radio0";
+   private static final String FMRADIO_NOTIFICATION_CHANNEL = "fmradio_notification_channel";
    private static final String LOGTAG = "FMService";//FMRadio.LOGTAG;
 
    private FmReceiver mReceiver;
@@ -1703,20 +1705,41 @@
          views.setTextViewText(R.id.frequency, "");
       }
 
-      Notification status = new Notification();
-      status.contentView = views;
-      status.flags |= Notification.FLAG_ONGOING_EVENT;
-      status.icon = R.drawable.stat_notify_fm;
-      status.contentIntent = PendingIntent.getActivity(this, 0,
-                                                       new Intent("com.caf.fmradio.FMRADIO_ACTIVITY"), 0);
-      startForeground(FMRADIOSERVICE_STATUS, status);
-      //NotificationManager nm = (NotificationManager)
-      //                         getSystemService(Context.NOTIFICATION_SERVICE);
-      //nm.notify(FMRADIOSERVICE_STATUS, status);
-      //setForeground(true);
+      Context context = getApplicationContext();
+      Notification notification;
+      NotificationManager notificationManager =
+              (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
+      NotificationChannel notificationChannel =
+              new NotificationChannel(FMRADIO_NOTIFICATION_CHANNEL,
+              context.getString(R.string.app_name),
+              NotificationManager.IMPORTANCE_HIGH);
+
+      notificationManager.createNotificationChannel(notificationChannel);
+
+      notification = new Notification.Builder(context, FMRADIO_NOTIFICATION_CHANNEL)
+            .setCustomContentView(views)
+            .setSmallIcon(R.drawable.stat_notify_fm)
+            .setContentIntent(PendingIntent.getActivity(this,
+                0, new Intent("com.caf.fmradio.FMRADIO_ACTIVITY"), 0))
+            .setOngoing(true)
+            .build();
+
+      notificationManager.notify(FMRADIOSERVICE_STATUS, notification);
+
       mFMOn = true;
    }
 
+      /* hide the FM Notification */
+   public void stopNotification() {
+      Log.d(LOGTAG,"stopNotification");
+
+      Context context = getApplicationContext();
+      NotificationManager notificationManager =
+            (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
+
+      notificationManager.deleteNotificationChannel(FMRADIO_NOTIFICATION_CHANNEL);
+   }
+
    private void stop() {
       Log.d(LOGTAG,"in stop");
 
@@ -2409,6 +2432,10 @@
            Log.d(LOGTAG, "FM application close button pressed or antenna removed");
            mSession.setActive(false);
        }
+
+       //stop Notification
+       stopNotification();
+
        return fmOff();
    }
   /*