Foreground/Background service tweaks

- Catch a (not user visible?) stack trace when handling the stop button
  from the background.
- Launch using startForegroundService()... I'm not sure if this is
  important, given that we call startForeground() just afterward, but
  some users are "stopped mysteriously", and this might be related.

app/src/main/AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="net.pmarks.chromadoze"
-    android:versionCode="26"
-    android:versionName="4.0">
+    android:versionCode="27"
+    android:versionName="4.1">
 
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />

app/src/main/java/net/pmarks/chromadoze/NoiseService.java

@@ -24,7 +24,6 @@
 import android.app.Service;
 import android.content.Context;
 import android.content.Intent;
-import android.content.res.Resources;
 import android.os.Build;
 import android.os.Handler;
 import android.os.IBinder;
@@ -37,7 +36,6 @@
 import android.widget.TextView;
 
 import androidx.core.app.NotificationCompat;
-import androidx.core.app.NotificationManagerCompat;
 
 import java.util.ArrayList;
 import java.util.Date;
@@ -300,7 +298,12 @@ private static Intent newStopIntent(Context ctx, int stopReasonId) {
     }
 
     public static void stopNow(Context ctx, int stopReasonId) {
-        ctx.startService(newStopIntent(ctx, stopReasonId));
+        try {
+            ctx.startService(newStopIntent(ctx, stopReasonId));
+        } catch (IllegalStateException e) {
+            // This can be triggered by running "adb shell input keyevent 86" when the app
+            // is not running.  We ignore it, because in that case there's nothing to stop.
+        }
     }
 
     private static void saveStopReason(int stopReasonId) {

app/src/main/java/net/pmarks/chromadoze/UIState.java

@@ -21,6 +21,8 @@
 import android.content.Intent;
 import android.content.SharedPreferences;
 
+import androidx.core.content.ContextCompat;
+
 import java.util.ArrayList;
 
 public class UIState {
@@ -111,7 +113,7 @@ public void sendToService() {
         getPhonon().writeIntent(intent);
         intent.putExtra("volumeLimit", (float) getVolumeLimit() / MAX_VOLUME);
         intent.putExtra("ignoreAudioFocus", mIgnoreAudioFocus);
-        mContext.startService(intent);
+        ContextCompat.startForegroundService(mContext, intent);
         mDirty = false;
     }
 

app/src/main/res/layout/about_fragment.xml

@@ -30,7 +30,7 @@
         android:layout_height="wrap_content"
         android:layout_gravity="center"
         android:paddingBottom="10sp"
-        android:text="© 2018 Paul Marks" />
+        android:text="© 2019 Paul Marks" />
 
     <TextView
         android:layout_width="wrap_content"