make service always foreground on init

Author: HeyAlex

widget-helper/src/main/java/heyalex/widgethelper/NotificationDelegate.kt

@@ -0,0 +1,33 @@
+package heyalex.widgethelper
+
+import android.R
+import android.annotation.TargetApi
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.content.Context
+import android.os.Build
+
+class NotificationDelegate {
+    companion object {
+        @JvmStatic
+        @TargetApi(Build.VERSION_CODES.O)
+        fun getNotification(context: Context): Notification {
+            val chan = NotificationChannel(
+                WidgetUpdater.NOTIFICATION_CHANNEL_ID,
+                WidgetUpdater.channelName,
+                NotificationManager.IMPORTANCE_NONE
+            )
+            val manager =
+                context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+            manager.createNotificationChannel(chan)
+            val notificationBuilder =
+                Notification.Builder(context, WidgetUpdater.NOTIFICATION_CHANNEL_ID)
+            notificationBuilder.setOngoing(true)
+            notificationBuilder.setContentTitle("Update widget")
+                .setContentText("Wait for finish updating")
+                .setSmallIcon(R.drawable.stat_notify_sync)
+            return notificationBuilder.build()
+        }
+    }
+}

widget-helper/src/main/java/heyalex/widgethelper/WidgetUpdateService.java

@@ -38,6 +38,9 @@ public class WidgetUpdateService extends IntentService {
 
     public WidgetUpdateService() {
         super("WidgetUpdateService");
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            startForeground(NOTIFICATION_ID, NotificationDelegate.getNotification(this));
+        }
         setIntentRedelivery(true);
     }
 

widget-helper/src/main/java/heyalex/widgethelper/WidgetUpdater.java

@@ -11,6 +11,8 @@
 import androidx.annotation.Nullable;
 import android.widget.RemoteViews;
 
+import org.jetbrains.annotations.NotNull;
+
 
 /**
  * Interface for updating widget
@@ -22,12 +24,12 @@ public abstract class WidgetUpdater {
     /**
      * Channel Id of default {@link Notification}
      */
-    private static final String NOTIFICATION_CHANNEL_ID = "widget updates";
+    static final String NOTIFICATION_CHANNEL_ID = "widget updates";
 
     /**
      * Channel Name of default {@link Notification}
      */
-    private static final String channelName = "Update Widget";
+    static final String channelName = "Update Widget";
 
     /**
      * Update widget by passing {@link RemoteViews} and id into
@@ -53,17 +55,6 @@ public abstract class WidgetUpdater {
      */
     @TargetApi(Build.VERSION_CODES.O)
     public Notification makeNotification(@NonNull Context context) {
-        NotificationChannel chan = new NotificationChannel(NOTIFICATION_CHANNEL_ID, channelName, NotificationManager.IMPORTANCE_NONE);
-        NotificationManager manager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
-        if (manager != null) {
-            manager.createNotificationChannel(chan);
-        }
-
-        Notification.Builder notificationBuilder = new Notification.Builder(context, NOTIFICATION_CHANNEL_ID);
-        notificationBuilder.setOngoing(true);
-        notificationBuilder.setContentTitle("Update widget")
-                .setContentText("Wait for finish updating")
-                .setSmallIcon(android.R.drawable.stat_notify_sync);
-        return notificationBuilder.build();
+        return NotificationDelegate.getNotification(context);
     }
 }