Factor out the idiom for startService() vs startForegroundService(), and

use it in StartReceive/StopReceiver as well as BootReceiver, so that the
sshd service can be started and stopped even if the UI is closed.

app/src/main/java/org/galexander/sshd/BootReceiver.java

@@ -3,27 +3,13 @@ package org.galexander.sshd;
 import android.content.BroadcastReceiver;
 import android.content.Intent;
 import android.content.Context;
-import android.os.Build;
-import android.widget.Toast;
-
 
 public class BootReceiver extends BroadcastReceiver {
 	public void onReceive(Context context, Intent intent) {
 		Prefs.init(context);
 		if (Prefs.get_onboot()) {
-			Intent i = new Intent(context, SimpleSSHDService.class);
-			if (Build.VERSION.SDK_INT >=
-					Build.VERSION_CODES.O) {
-				if (Prefs.get_foreground()) {
-					context.startForegroundService(i);
-				} else {
-					Toast.makeText(context,
-"SimpleSSHD cannot start background at boot since Oreo (see Settings).",
-						Toast.LENGTH_LONG).show();
-				}
-			} else {
-				context.startService(i);
-			}
+			SimpleSSHDService.my_startService(context,
+				new Intent(context, SimpleSSHDService.class));
 		}
 	}
 }

app/src/main/java/org/galexander/sshd/SimpleSSHDService.java

@@ -10,6 +10,7 @@ import android.content.Context;
 import android.os.Build;
 import android.os.IBinder;
 import android.widget.RemoteViews;
+import android.widget.Toast;
 import androidx.core.app.NotificationCompat;
 import java.io.BufferedReader;
 import java.io.File;
@@ -210,4 +211,20 @@ public class SimpleSSHDService extends Service {
 	static {
 		System.loadLibrary("simplesshd-jni");
 	}
+
+	public static void my_startService(Context ctx, Intent i) {
+		Prefs.init(ctx);
+		if (Build.VERSION.SDK_INT >=
+				Build.VERSION_CODES.O) {
+			if (Prefs.get_foreground()) {
+				ctx.startForegroundService(i);
+			} else {
+				Toast.makeText(ctx,
+"SimpleSSHD cannot start in background since Oreo (enable Settings -> Foreground Service).",
+					Toast.LENGTH_LONG).show();
+			}
+		} else {
+			ctx.startService(i);
+		}
+	}
 }

app/src/main/java/org/galexander/sshd/StartReceiver.java

@@ -6,7 +6,7 @@ import android.content.Context;
 
 public class StartReceiver extends BroadcastReceiver {
 	public void onReceive(Context context, Intent intent) {
-                context.startService(
+                SimpleSSHDService.my_startService(context,
 			new Intent(context, SimpleSSHDService.class));
 	}
 }

app/src/main/java/org/galexander/sshd/StopReceiver.java

@@ -6,7 +6,7 @@ import android.content.Context;
 
 public class StopReceiver extends BroadcastReceiver {
 	public void onReceive(Context context, Intent intent) {
-                context.startService(
+                SimpleSSHDService.my_startService(context,
 			new Intent(context, SimpleSSHDService.class)
 				.putExtra("stop", true));
 	}