Fix notifications in Android 13 (#227)

* Add POST_NOTIFICATIONS permission to manifest

* Update to use latest Android 13 notification api

* Update versionCode and versionName

Author: slavick

app/build.gradle

@@ -34,8 +34,8 @@ android {
         multiDexEnabled true
         targetSdkVersion 33
         vectorDrawables.useSupportLibrary = true
-        versionCode 82
-        versionName "22"
+        versionCode 83
+        versionName "22.1"
     }
     buildTypes {
         debug {

app/src/main/AndroidManifest.xml

@@ -4,6 +4,7 @@
           android:installLocation="auto">
 
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="29" tools:ignore="ScopedStorage"/>
     <uses-permission android:name="com.google.android.gms.permission.AD_ID" tools:node="remove"/>

app/src/main/java/org/nutritionfacts/dailydozen/activity/DailyReminderSettingsActivity.java

@@ -5,13 +5,15 @@
 import android.view.View;
 import android.widget.TimePicker;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.recyclerview.widget.LinearLayoutManager;
 
 import org.greenrobot.eventbus.Subscribe;
 import org.nutritionfacts.dailydozen.adapter.DailyReminderAdapter;
 import org.nutritionfacts.dailydozen.controller.Bus;
+import org.nutritionfacts.dailydozen.controller.PermissionController;
 import org.nutritionfacts.dailydozen.controller.Prefs;
 import org.nutritionfacts.dailydozen.databinding.ActivityNotificationSettingsBinding;
 import org.nutritionfacts.dailydozen.event.ReminderRemovedEvent;
@@ -50,9 +52,24 @@ private void init() {
         onDailyReminderSwitchToggled();
         onAddReminderClicked();
 
-        updateReminderPref = Prefs.getInstance(this).getUpdateReminderPref();
+        if (PermissionController.canPostNotifications(this)) {
+            updateReminderPref = Prefs.getInstance(this).getUpdateReminderPref();
 
-        if (updateReminderPref != null) {
+            if (updateReminderPref != null) {
+                initUpdateReminderPrefConfig();
+            } else {
+                disableUpdateReminderPref();
+            }
+        } else {
+            PermissionController.askForPostNotifications(this);
+        }
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+
+        if (PermissionController.grantedPostNotifications(requestCode, grantResults)) {
             initUpdateReminderPrefConfig();
         } else {
             disableUpdateReminderPref();

app/src/main/java/org/nutritionfacts/dailydozen/activity/DebugActivity.java

@@ -6,11 +6,13 @@
 import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 
+import androidx.annotation.NonNull;
 import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
 
 import org.nutritionfacts.dailydozen.Common;
 import org.nutritionfacts.dailydozen.R;
+import org.nutritionfacts.dailydozen.controller.PermissionController;
 import org.nutritionfacts.dailydozen.databinding.ActivityDebugBinding;
 import org.nutritionfacts.dailydozen.task.GenerateDataTask;
 import org.nutritionfacts.dailydozen.task.ProgressListener;
@@ -116,7 +118,28 @@ public void onNothingSelected(AdapterView<?> parent) {
     }
 
     public void onShowNotificationClicked() {
-        binding.debugShowNotification.setOnClickListener(v -> NotificationUtil.showUpdateReminderNotification(DebugActivity.this, null));
+        binding.debugShowNotification.setOnClickListener(v -> {
+            Timber.d("onShowNotificationClicked");
+            if (PermissionController.canPostNotifications(this)) {
+                Timber.d("canPostNotifications = [true]");
+                NotificationUtil.showUpdateReminderNotification(this, null);
+            } else {
+                Timber.d("canPostNotifications = [false]");
+                PermissionController.askForPostNotifications(this);
+            }
+        });
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+
+        if (PermissionController.grantedPostNotifications(requestCode, grantResults)) {
+            Timber.d("onRequestPermissionsResult = [true]");
+            NotificationUtil.showUpdateReminderNotification(this, null);
+        } else {
+            Timber.d("onRequestPermissionsResult = [false]");
+        }
     }
 
     @Override

app/src/main/java/org/nutritionfacts/dailydozen/controller/PermissionController.java

@@ -2,14 +2,34 @@
 
 import android.Manifest;
 import android.app.Activity;
+import android.app.NotificationChannel;
 import android.content.pm.PackageManager;
 import android.os.Build;
 
 import androidx.core.app.ActivityCompat;
+import androidx.core.app.NotificationManagerCompat;
 import androidx.core.content.ContextCompat;
 
+import org.nutritionfacts.dailydozen.util.NotificationUtil;
+
+import timber.log.Timber;
+
 public class PermissionController {
     private static final int WRITE_EXTERNAL_STORAGE_REQUEST = 1;
+    private static final int POST_NOTIFICATIONS_REQUEST = 2;
+
+    public static boolean canPostNotifications(final Activity activity) {
+        boolean areNotificationsEnabled = NotificationManagerCompat.from(activity).areNotificationsEnabled();
+        Timber.d("NotificationManager.areNotificationsEnabled() = %s", areNotificationsEnabled);
+        if (areNotificationsEnabled) {
+            NotificationChannel channel = NotificationManagerCompat.from(activity).getNotificationChannel(NotificationUtil.CHANNEL_REMINDERS);
+            if (channel != null) {
+                Timber.d("channel.getImportance() = %s", channel.getImportance());
+                return channel.getImportance() != NotificationManagerCompat.IMPORTANCE_NONE;
+            }
+        }
+        return false;
+    }
 
     public static boolean canWriteExternalStorage(final Activity activity) {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
@@ -18,20 +38,27 @@ public static boolean canWriteExternalStorage(final Activity activity) {
         return true;
     }
 
+    public static void askForPostNotifications(final Activity activity) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            ActivityCompat.requestPermissions(
+                    activity,
+                    new String[]{Manifest.permission.POST_NOTIFICATIONS},
+                    POST_NOTIFICATIONS_REQUEST);
+        }
+    }
+
     public static void askForWriteExternalStorage(final Activity activity) {
         ActivityCompat.requestPermissions(
                 activity,
                 new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
                 WRITE_EXTERNAL_STORAGE_REQUEST);
     }
 
-    public static boolean grantedWriteExternalStorage(int requestCode, int[] grantResults) {
-        boolean permissionGranted = false;
-
-        if (requestCode == WRITE_EXTERNAL_STORAGE_REQUEST) {
-            permissionGranted = grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED;
-        }
+    public static boolean grantedPostNotifications(int requestCode, int[] grantResults) {
+        return requestCode == POST_NOTIFICATIONS_REQUEST && grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED;
+    }
 
-        return permissionGranted;
+    public static boolean grantedWriteExternalStorage(int requestCode, int[] grantResults) {
+        return requestCode == WRITE_EXTERNAL_STORAGE_REQUEST && grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED;
     }
 }

app/src/main/java/org/nutritionfacts/dailydozen/util/NotificationUtil.java

@@ -27,7 +27,7 @@ public class NotificationUtil {
     private static final int UPDATE_REMINDER_ID = 1;
     private static final int NOTIFICATION_SETTINGS_ID = 2;
 
-    private static final String CHANNEL_REMINDERS = "DAILY_DOZEN_REMINDERS_CHANNEL";
+    public static final String CHANNEL_REMINDERS = "DAILY_DOZEN_REMINDERS_CHANNEL";
 
     public static void showUpdateReminderNotification(final Context context, Intent intent) {
         final NotificationCompat.Builder builder = new NotificationCompat.Builder(context, CHANNEL_REMINDERS)