Fix notification channels

app/src/main/AndroidManifest.xml

@@ -12,6 +12,7 @@
     <uses-permission android:name="android.permission.ACCESS_SUPERUSER" />
 
     <application
+        android:name=".App"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:supportsRtl="true"

app/src/main/java/ru/meefik/linuxdeploy/ActionReceiver.java

@@ -7,6 +7,8 @@
 
 import androidx.core.app.NotificationCompat;
 
+import static ru.meefik.linuxdeploy.App.SERVICE_CHANNEL_ID;
+
 public class ActionReceiver extends BroadcastReceiver {
 
     final static int NOTIFY_ID = 2;
@@ -16,7 +18,7 @@ public class ActionReceiver extends BroadcastReceiver {
     private void showNotification(Context c, int icon, String text) {
         NotificationManager mNotificationManager = (NotificationManager) c
                 .getSystemService(Context.NOTIFICATION_SERVICE);
-        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(c)
+        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(c, SERVICE_CHANNEL_ID)
                 .setSmallIcon(icon)
                 .setContentTitle(c.getString(R.string.app_name))
                 .setContentText(text);

app/src/main/java/ru/meefik/linuxdeploy/App.java

@@ -0,0 +1,36 @@
+package ru.meefik.linuxdeploy;
+
+import android.app.Application;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.os.Build;
+
+public class App extends Application {
+
+    public static final String SERVICE_CHANNEL_ID = "SERVICE_CHANNEL";
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+
+        // Create notification channels for Oreo and newer
+        createNotificationChannels();
+    }
+
+    private void createNotificationChannels() {
+        // Create the NotificationChannel, but only on API 26+ because
+        // the NotificationChannel class is new and not in the support library
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            CharSequence name = getString(R.string.service_notification_channel_name);
+            String description = getString(R.string.service_notification_channel_description);
+            int importance = NotificationManager.IMPORTANCE_LOW;
+            NotificationChannel channel = new NotificationChannel(SERVICE_CHANNEL_ID, name, importance);
+            channel.setDescription(description);
+            // Register the channel with the system; you can't change the importance
+            // or other notification behaviors after this
+            NotificationManager notificationManager = getSystemService(NotificationManager.class);
+            notificationManager.createNotificationChannel(channel);
+        }
+
+    }
+}

app/src/main/java/ru/meefik/linuxdeploy/PrefStore.java

@@ -24,6 +24,8 @@
 import androidx.core.app.NotificationCompat;
 import androidx.core.app.TaskStackBuilder;
 
+import static ru.meefik.linuxdeploy.App.SERVICE_CHANNEL_ID;
+
 public class PrefStore {
 
     private final static SettingsStore SETTINGS = new SettingsStore();
@@ -774,7 +776,7 @@ static void showNotification(Context context, Intent intent) {
                 .getSystemService(Context.NOTIFICATION_SERVICE);
         if (isNotification(context)) {
             setLocale(context);
-            NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context)
+            NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context, SERVICE_CHANNEL_ID)
                     .setSmallIcon(R.mipmap.ic_launcher)
                     .setContentTitle(context.getString(R.string.app_name))
                     .setContentText(context.getString(R.string.notification_current_profile)

app/src/main/res/values/strings.xml

@@ -352,5 +352,7 @@
     <string name="help_text">\n<b>Help</b>\n\nThis application installs the selected GNU/Linux distribution and executes it in a chroot-container.\n\nProcedure:\n1. Get superuser privileges (root).\n2. Check the connection to Internet.\n3. Specify the installation options.\n4. Start the installation (\"Menu => Install\").\n5. Wait until the installation is complete.\n6. Tap \"START\" button to run the container.\n7. Connect to the container through CLI, SSH, VNC, or others.\n\nFor more information, see \"About\".</string>
     <!-- ABOUT -->
     <string name="about_text">This application installs the selected GNU/Linux distribution and executes it in a chroot-container.\n\nFor more information see <a href="https://github.com/meefik/linuxdeploy">project page</a>, <a href="http://4pda.ru/forum/index.php?showtopic=378043">forum</a> or <a href="http://meefik.ru">developer site</a>.\n\n&#169; 2012&#8211;2018 Anton Skshidlevsky, GPLv3</string>
+    <string name="service_notification_channel_description">Channel to display service notifications.</string>
+    <string name="service_notification_channel_name">Services</string>
 
 </resources>