提交

2026-06-29 16:21:36 +08:00
parent 810a087b78
commit c28ea8ea4a
213 changed files with 49969 additions and 32706 deletions
@@ -0,0 +1,80 @@
+fileFormatVersion: 2
+guid: 5a06b648d726ee0479a00bac712c49f1
+PluginImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  iconMap: {}
+  executionOrder: {}
+  defineConstraints: []
+  isPreloaded: 0
+  isOverridable: 1
+  isExplicitlyReferenced: 0
+  validateReferences: 1
+  platformData:
+  - first:
+      : Any
+    second:
+      enabled: 0
+      settings:
+        Exclude Android: 0
+        Exclude Editor: 1
+        Exclude Linux64: 1
+        Exclude OSXUniversal: 1
+        Exclude Win: 1
+        Exclude Win64: 1
+        Exclude iOS: 1
+  - first:
+      Android: Android
+    second:
+      enabled: 1
+      settings:
+        CPU: ARMv7
+  - first:
+      Any: 
+    second:
+      enabled: 0
+      settings: {}
+  - first:
+      Editor: Editor
+    second:
+      enabled: 0
+      settings:
+        CPU: AnyCPU
+        DefaultValueInitialized: true
+        OS: AnyOS
+  - first:
+      Standalone: Linux64
+    second:
+      enabled: 0
+      settings:
+        CPU: None
+  - first:
+      Standalone: OSXUniversal
+    second:
+      enabled: 0
+      settings:
+        CPU: None
+  - first:
+      Standalone: Win
+    second:
+      enabled: 0
+      settings:
+        CPU: None
+  - first:
+      Standalone: Win64
+    second:
+      enabled: 0
+      settings:
+        CPU: None
+  - first:
+      iPhone: iOS
+    second:
+      enabled: 0
+      settings:
+        AddToEmbeddedBinaries: false
+        CPU: AnyCPU
+        CompileFlags: 
+        FrameworkDependencies: 
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
@@ -0,0 +1,44 @@
+plugins {
+    id 'com.android.library'
+}
+
+def getCompileSdk(unityLib) {
+    def unityCompileSdk = unityLib.compileSdkVersion
+    def version = unityCompileSdk.find('\\d+').toInteger()
+    if (version < 33) {
+        return 33
+    }
+    return version
+}
+
+android {
+    // Checking if namespace exists is needed for 2021.3 (AGP 4.0.1)
+    // When 2021.3 is dropped, remove this check and package="com.unity.androidnotifications" from AndroidManifest
+    if (project.android.hasProperty("namespace")) {
+        namespace "com.unity.androidnotifications"
+    }
+
+    def unityLib = project(':unityLibrary').extensions.getByName('android')
+    compileSdkVersion getCompileSdk(unityLib)
+    buildToolsVersion unityLib.buildToolsVersion
+
+    defaultConfig {
+        minSdkVersion 22
+        consumerProguardFiles "proguard-rules.pro"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled true
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+    api files('../libs/unity-classes.jar')
+}
@@ -0,0 +1,3 @@
+# Accessed from C# code
+-keep class com.unity.androidnotifications.UnityNotificationManager { public *; }
+-keep interface com.unity.androidnotifications.NotificationCallback { *; }
@@ -0,0 +1,12 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.unity.androidnotifications">
+  <application>
+    <receiver android:name="com.unity.androidnotifications.UnityNotificationManager" android:exported="false" />
+    <receiver android:name="com.unity.androidnotifications.UnityNotificationRestartReceiver" android:enabled="false" android:exported="false">
+      <intent-filter>
+        <action android:name="android.intent.action.BOOT_COMPLETED" />
+      </intent-filter>
+    </receiver>
+    <meta-data android:name="com.unity.androidnotifications.exact_scheduling" android:value="0" />
+  </application>
+  <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+</manifest>
@@ -0,0 +1,203 @@
+package com.unity.androidnotifications;
+
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_FIRE_TIME;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_ID;
+import static com.unity.androidnotifications.UnityNotificationManager.TAG_UNITY;
+
+import android.app.Notification;
+import android.os.Bundle;
+import android.util.Log;
+
+import java.util.Calendar;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.LinkedTransferQueue;
+import java.util.Enumeration;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+public class UnityNotificationBackgroundThread extends Thread {
+    private static abstract class Task {
+        // returns true if notificationIds was modified (needs to be saved)
+        public abstract boolean run(UnityNotificationManager manager, ConcurrentHashMap<Integer, Notification.Builder> notifications);
+    }
+
+    private static class ScheduleNotificationTask extends Task {
+        private int notificationId;
+        private Notification.Builder notificationBuilder;
+        private boolean isCustomized;
+        private boolean isNew;
+
+        public ScheduleNotificationTask(int id, Notification.Builder builder, boolean customized, boolean addedNew) {
+            notificationId = id;
+            notificationBuilder = builder;
+            isCustomized = customized;
+            isNew = addedNew;
+        }
+
+        @Override
+        public boolean run(UnityNotificationManager manager, ConcurrentHashMap<Integer, Notification.Builder> notifications) {
+            String id = String.valueOf(notificationId);
+            Integer ID = Integer.valueOf(notificationId);
+            boolean didSchedule = false;
+            try {
+                UnityNotificationManager.mUnityNotificationManager.performNotificationScheduling(notificationId, notificationBuilder, isCustomized);
+                didSchedule = true;
+            } finally {
+                // if failed to schedule or replace, remove
+                if (!didSchedule) {
+                    notifications.remove(notificationId);
+                    manager.cancelPendingNotificationIntent(notificationId);
+                    manager.deleteExpiredNotificationIntent(id);
+                }
+            }
+
+            return isNew;
+        }
+    }
+
+    private static class CancelNotificationTask extends Task {
+        private int notificationId;
+
+        public CancelNotificationTask(int id) {
+            notificationId = id;
+        }
+
+        @Override
+        public boolean run(UnityNotificationManager manager, ConcurrentHashMap<Integer, Notification.Builder> notifications) {
+            manager.cancelPendingNotificationIntent(notificationId);
+            if (notifications.remove(notificationId) != null) {
+                manager.deleteExpiredNotificationIntent(String.valueOf(notificationId));
+                return true;
+            }
+
+            return false;
+        }
+    }
+
+    private static class CancelAllNotificationsTask extends Task {
+        @Override
+        public boolean run(UnityNotificationManager manager, ConcurrentHashMap<Integer, Notification.Builder> notifications) {
+            if (notifications.isEmpty())
+                return false;
+
+            Enumeration<Integer> ids = notifications.keys();
+            while (ids.hasMoreElements()) {
+                Integer notificationId = ids.nextElement();
+                manager.cancelPendingNotificationIntent(notificationId);
+                manager.deleteExpiredNotificationIntent(String.valueOf(notificationId));
+            }
+
+            notifications.clear();
+            return true;
+        }
+    }
+
+    private static class HousekeepingTask extends Task {
+        UnityNotificationBackgroundThread thread;
+
+        public HousekeepingTask(UnityNotificationBackgroundThread th) {
+            thread = th;
+        }
+
+        @Override
+        public boolean run(UnityNotificationManager manager, ConcurrentHashMap<Integer, Notification.Builder> notifications) {
+            HashSet<String> notificationIds = new HashSet<>();
+            Enumeration<Integer> ids = notifications.keys();
+            while (ids.hasMoreElements()) {
+                notificationIds.add(String.valueOf(ids.nextElement()));
+            }
+            thread.performHousekeeping(notificationIds);
+            return false;
+        }
+    }
+
+    private static final int TASKS_FOR_HOUSEKEEPING = 50;
+    private LinkedTransferQueue<Task> mTasks = new LinkedTransferQueue();
+    private ConcurrentHashMap<Integer, Notification.Builder> mScheduledNotifications;
+    private UnityNotificationManager mManager;
+    private int mTasksSinceHousekeeping = TASKS_FOR_HOUSEKEEPING;  // we want hoursekeeping at the start
+
+    public UnityNotificationBackgroundThread(UnityNotificationManager manager, ConcurrentHashMap<Integer, Notification.Builder> scheduledNotifications) {
+        mManager = manager;
+        mScheduledNotifications = scheduledNotifications;
+        // rescheduling after reboot may have loaded, otherwise load here
+        if (mScheduledNotifications.size() == 0)
+            loadNotifications();
+    }
+
+    public void enqueueNotification(int id, Notification.Builder notificationBuilder, boolean customized, boolean addedNew) {
+        mTasks.add(new UnityNotificationBackgroundThread.ScheduleNotificationTask(id, notificationBuilder, customized, addedNew));
+    }
+
+    public void enqueueCancelNotification(int id) {
+        mTasks.add(new CancelNotificationTask(id));
+    }
+
+    public void enqueueCancelAllNotifications() {
+        mTasks.add(new CancelAllNotificationsTask());
+    }
+
+    private void enqueueHousekeeping() {
+        mTasks.add(new HousekeepingTask(this));
+    }
+
+    @Override
+    public void run() {
+        boolean haveChanges = false;
+        while (true) {
+            try {
+                Task task = mTasks.take();
+                haveChanges |= executeTask(mManager, task, mScheduledNotifications);
+                if (!(task instanceof HousekeepingTask))
+                    ++mTasksSinceHousekeeping;
+                if (mTasks.size() == 0 && haveChanges) {
+                    haveChanges = false;
+                    enqueueHousekeeping();
+                }
+            } catch (InterruptedException e) {
+                if (mTasks.isEmpty())
+                    break;
+            }
+        }
+    }
+
+    private boolean executeTask(UnityNotificationManager manager, Task task, ConcurrentHashMap<Integer, Notification.Builder> notifications) {
+        try {
+            return task.run(manager, notifications);
+        } catch (Exception e) {
+            Log.e(TAG_UNITY, "Exception executing notification task", e);
+            return false;
+        }
+    }
+
+    private void performHousekeeping(Set<String> notificationIds) {
+        // don't do housekeeping if last task we did was housekeeping (other=1)
+        boolean performHousekeeping = mTasksSinceHousekeeping >= TASKS_FOR_HOUSEKEEPING;
+        mTasksSinceHousekeeping = 0;
+        if (performHousekeeping)
+            mManager.performNotificationHousekeeping(notificationIds);
+        mManager.saveScheduledNotificationIDs(notificationIds);
+    }
+
+    private void loadNotifications() {
+        List<Notification.Builder> notifications = mManager.loadSavedNotifications();
+        if (notifications == null || notifications.size() == 0)
+            return;
+        final long currentTime = Calendar.getInstance().getTime().getTime();
+        boolean needHousekeeping = false;
+        for (Notification.Builder builder : notifications) {
+            Bundle extras = builder.getExtras();
+            int id = extras.getInt(KEY_ID, -1);
+            long fireTime = extras.getLong(KEY_FIRE_TIME, -1);
+            boolean inFuture = fireTime - currentTime > 0;
+            if (inFuture)
+                mScheduledNotifications.put(id, builder);
+            else
+                needHousekeeping = true;
+        }
+
+        if (needHousekeeping)
+            enqueueHousekeeping();
+    }
+}
@@ -0,0 +1,67 @@
+package com.unity.androidnotifications;
+
+import android.app.Notification;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.util.Log;
+
+import java.util.Calendar;
+import java.util.Date;
+import java.util.List;
+
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_FIRE_TIME;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_ID;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_REPEAT_INTERVAL;
+import static com.unity.androidnotifications.UnityNotificationManager.TAG_UNITY;
+
+public class UnityNotificationRestartReceiver extends BroadcastReceiver {
+    private static final long EXPIRATION_TRESHOLD = 600000;  // 10 minutes
+
+    @Override
+    public void onReceive(Context context, Intent received_intent) {
+        Log.d(TAG_UNITY, "Rescheduling notifications after restart");
+        if (Intent.ACTION_BOOT_COMPLETED.equals(received_intent.getAction())) {
+            AsyncTask.execute(() -> { rescheduleSavedNotifications(context); });
+        }
+    }
+
+    private static void rescheduleSavedNotifications(Context context) {
+        UnityNotificationManager manager = UnityNotificationManager.getNotificationManagerImpl(context);
+        List<Notification.Builder> saved_notifications = manager.loadSavedNotifications();
+        Date currentDate = Calendar.getInstance().getTime();
+
+        for (Notification.Builder notificationBuilder : saved_notifications) {
+            rescheduleNotification(manager, currentDate, notificationBuilder);
+        }
+    }
+
+    private static boolean rescheduleNotification(UnityNotificationManager manager, Date currentDate, Notification.Builder notificationBuilder) {
+        try {
+            Bundle extras = notificationBuilder.getExtras();
+            long repeatInterval = extras.getLong(KEY_REPEAT_INTERVAL, 0L);
+            long fireTime = extras.getLong(KEY_FIRE_TIME, 0L);
+            Date fireTimeDate = new Date(fireTime);
+
+            boolean isRepeatable = repeatInterval > 0;
+
+            if (fireTimeDate.after(currentDate) || isRepeatable) {
+                manager.scheduleAlarmWithNotification(notificationBuilder);
+                return true;
+            } else if (currentDate.getTime() - fireTime < EXPIRATION_TRESHOLD) {
+                // notification is in the past, but not by much, send now
+                int id = extras.getInt(KEY_ID);
+                manager.notify(id, notificationBuilder);
+                return true;
+            } else {
+                Log.d(TAG_UNITY, "Notification expired, not rescheduling, ID: " + extras.getInt(KEY_ID, -1));
+                return false;
+            }
+        } catch (Exception e) {
+            Log.e(TAG_UNITY, "Failed to reschedule notification", e);
+            return false;
+        }
+    }
+}
@@ -0,0 +1,652 @@
+package com.unity.androidnotifications;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+import android.app.Notification;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.pm.ActivityInfo;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.content.res.Resources;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.util.Base64;
+import android.util.Log;
+
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_CHANNEL_ID;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_FIRE_TIME;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_ID;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_INTENT_DATA;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_LARGE_ICON;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_NOTIFICATION;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_REPEAT_INTERVAL;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_SMALL_ICON;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_SHOW_IN_FOREGROUND;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_BIG_LARGE_ICON;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_BIG_PICTURE;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_BIG_CONTENT_TITLE;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_BIG_SUMMARY_TEXT;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_BIG_CONTENT_DESCRIPTION;
+import static com.unity.androidnotifications.UnityNotificationManager.KEY_BIG_SHOW_WHEN_COLLAPSED;
+import static com.unity.androidnotifications.UnityNotificationManager.TAG_UNITY;
+
+class UnityNotificationUtilities {
+    /*
+        We serialize notifications and save them to shared prefs, so that if app is killed, we can recreate them.
+        The serialized BLOB starts with a four byte magic number descibing serialization type, followed by an integer version.
+        IMPORTANT: IF YOU DO A CHANGE THAT AFFECTS THE LAYOUT, BUMP THE VERSION, AND ENSURE OLD VERSION STILL DESERIALIZES. ADD TEST.
+        In real life app can get updated having old serialized notifications present, so we should be able to deserialize them.
+    */
+    // magic stands for "Unity Mobile Notifications Notification"
+    static final byte[] UNITY_MAGIC_NUMBER = new byte[] { 'U', 'M', 'N', 'N'};
+    private static final byte[] UNITY_MAGIC_NUMBER_PARCELLED = new byte[] { 'U', 'M', 'N', 'P'};
+    private static final int NOTIFICATION_SERIALIZATION_VERSION = 3;
+    private static final int INTENT_SERIALIZATION_VERSION = 0;
+
+    static final String SAVED_NOTIFICATION_PRIMARY_KEY = "data";
+    static final String SAVED_NOTIFICATION_FALLBACK_KEY = "fallback.data";
+
+    protected static int findResourceIdInContextByName(Context context, String name) {
+        if (name == null)
+            return 0;
+
+        try {
+            Resources res = context.getResources();
+            if (res != null) {
+                int id = res.getIdentifier(name, "mipmap", context.getPackageName());
+                if (id == 0)
+                    return res.getIdentifier(name, "drawable", context.getPackageName());
+                else
+                    return id;
+            }
+            return 0;
+        } catch (Resources.NotFoundException e) {
+            return 0;
+        }
+    }
+
+    /* Originally we used to serialize a bundle with predefined list of values.
+       After we exposed entire Notification.Builder to users, this is not sufficient anymore.
+       Unfortunately, while Notification itself is Parcelable and can be marshalled to bytes,
+       it's contents are not guaranteed to be (Binder objects).
+       Hence what we try to do here is:
+       - serialize as is if notification is possibly customized by user
+       - otherwise serialize our stuff, since there is nothing more
+    */
+    protected static void serializeNotification(SharedPreferences prefs, Notification notification, boolean serializeParcel) {
+        try {
+            String serialized;
+            ByteArrayOutputStream data = new ByteArrayOutputStream();
+            DataOutputStream out = new DataOutputStream(data);
+            if (serializeParcel) {
+                Intent intent = new Intent();
+                intent.putExtra(KEY_NOTIFICATION, notification);
+                if (serializeNotificationParcel(intent, out)) {
+                    out.close();
+                    byte[] bytes = data.toByteArray();
+                    serialized = Base64.encodeToString(bytes, 0, bytes.length, 0);
+                } else {
+                    return; // failed
+                }
+            }
+            else {
+                if (serializeNotificationCustom(notification, out)) {
+                    out.flush();
+                    byte[] bytes = data.toByteArray();
+                    serialized = Base64.encodeToString(bytes, 0, bytes.length, 0);
+                } else {
+                    return; // failed
+                }
+            }
+
+            SharedPreferences.Editor editor = prefs.edit().clear();
+            editor.putString(SAVED_NOTIFICATION_PRIMARY_KEY, serialized);
+            editor.apply();
+        } catch (Exception e) {
+            Log.e(TAG_UNITY, "Failed to serialize notification", e);
+        }
+    }
+
+    static boolean serializeNotificationParcel(Intent intent, DataOutputStream out) {
+        try {
+            byte[] bytes = serializeParcelable(intent);
+            if (bytes == null || bytes.length == 0)
+                return false;
+            out.write(UNITY_MAGIC_NUMBER_PARCELLED);
+            out.writeInt(INTENT_SERIALIZATION_VERSION);
+            out.writeInt(bytes.length);
+            out.write(bytes);
+            return true;
+        } catch (Exception e) {
+            Log.e(TAG_UNITY, "Failed to serialize notification as Parcel", e);
+        } catch (OutOfMemoryError e) {
+            Log.e(TAG_UNITY, "Failed to serialize notification as Parcel", e);
+        }
+
+        return false;
+    }
+
+    private static boolean serializeNotificationCustom(Notification notification, DataOutputStream out) {
+        try {
+            out.write(UNITY_MAGIC_NUMBER);
+            out.writeInt(NOTIFICATION_SERIALIZATION_VERSION);
+
+            // serialize extras
+            boolean showWhen = notification.extras.getBoolean(Notification.EXTRA_SHOW_WHEN, false);
+
+            out.writeInt(notification.extras.getInt(KEY_ID));
+            serializeString(out, notification.extras.getString(Notification.EXTRA_TITLE));
+            serializeString(out, notification.extras.getString(Notification.EXTRA_TEXT));
+            serializeString(out, notification.extras.getString(KEY_SMALL_ICON));
+            serializeString(out, notification.extras.getString(KEY_LARGE_ICON));
+            out.writeLong(notification.extras.getLong(KEY_FIRE_TIME, -1));
+            out.writeLong(notification.extras.getLong(KEY_REPEAT_INTERVAL, -1));
+            serializeString(out, notification.extras.getString(Notification.EXTRA_BIG_TEXT));
+            out.writeBoolean(notification.extras.getBoolean(Notification.EXTRA_SHOW_CHRONOMETER, false));
+            out.writeBoolean(showWhen);
+            serializeString(out, notification.extras.getString(KEY_INTENT_DATA));
+            out.writeBoolean(notification.extras.getBoolean(KEY_SHOW_IN_FOREGROUND, true));
+
+            String bigPicture = notification.extras.getString(KEY_BIG_PICTURE);
+            serializeString(out, bigPicture);
+            if (bigPicture != null && bigPicture.length() > 0) {
+                // the following only need to be put in if big picture is there
+                serializeString(out, notification.extras.getString(KEY_BIG_LARGE_ICON));
+                serializeString(out, notification.extras.getString(KEY_BIG_CONTENT_TITLE));
+                serializeString(out, notification.extras.getString(KEY_BIG_CONTENT_DESCRIPTION));
+                serializeString(out, notification.extras.getString(KEY_BIG_SUMMARY_TEXT));
+                out.writeBoolean(notification.extras.getBoolean(KEY_BIG_SHOW_WHEN_COLLAPSED, false));
+            }
+
+            serializeString(out, Build.VERSION.SDK_INT < Build.VERSION_CODES.O ? null : notification.getChannelId());
+            Integer color = UnityNotificationManager.getNotificationColor(notification);
+            out.writeBoolean(color != null);
+            if (color != null)
+                out.writeInt(color);
+            out.writeInt(notification.number);
+            out.writeBoolean(0 != (notification.flags & Notification.FLAG_AUTO_CANCEL));
+            serializeString(out, notification.getGroup());
+            out.writeBoolean(0 != (notification.flags & Notification.FLAG_GROUP_SUMMARY));
+            out.writeInt(UnityNotificationManager.getNotificationGroupAlertBehavior(notification));
+            serializeString(out, notification.getSortKey());
+            if (showWhen)
+                out.writeLong(notification.when);
+
+            return true;
+        } catch (Exception e) {
+            Log.e(TAG_UNITY, "Failed to serialize notification", e);
+            return false;
+        }
+    }
+
+    static void serializeString(DataOutputStream out, String s) throws IOException {
+        if (s == null || s.length() == 0)
+            out.writeInt(0);
+        else {
+            byte[] bytes = s.getBytes(StandardCharsets.UTF_8);
+            out.writeInt(bytes.length);
+            out.write(bytes);
+        }
+    }
+
+    static byte[] serializeParcelable(Parcelable obj) {
+        try {
+            Parcel p = Parcel.obtain();
+            Bundle b = new Bundle();
+            b.putParcelable("obj", obj);
+            p.writeParcelable(b, 0);
+            byte[] result = p.marshall();
+            p.recycle();
+            return result;
+        } catch (Exception e) {
+            Log.e(TAG_UNITY, "Failed to serialize Parcelable", e);
+        } catch (OutOfMemoryError e) {
+            Log.e(TAG_UNITY, "Failed to serialize Parcelable", e);
+        }
+
+        return null;
+    }
+
+    protected static Object deserializeNotification(Context context, SharedPreferences prefs) {
+        String serializedIntentData = prefs.getString(SAVED_NOTIFICATION_PRIMARY_KEY, "");
+        if (null == serializedIntentData || serializedIntentData.length() <= 0)
+            return null;
+        byte[] bytes = Base64.decode(serializedIntentData, 0);
+        Object notification = deserializeNotification(context, bytes);
+        if (notification != null)
+            return notification;
+        serializedIntentData = prefs.getString(SAVED_NOTIFICATION_FALLBACK_KEY, "");
+        if (null == serializedIntentData || serializedIntentData.length() <= 0)
+            return null;
+        bytes = Base64.decode(serializedIntentData, 0);
+        return deserializeNotification(context, bytes);
+    }
+
+    /* See serialization method above for explaination of fallbacks.
+       This one matches it with one additional fallback: support for "old" bundle serialization.
+    */
+    private static Object deserializeNotification(Context context, byte[] bytes) {
+        ByteArrayInputStream data = new ByteArrayInputStream(bytes);
+        DataInputStream in = new DataInputStream(data);
+        Notification notification = deserializeNotificationParcelable(in);
+        if (notification != null)
+            return notification;
+        data.reset();
+        Notification.Builder builder = deserializeNotificationCustom(context, in);
+        if (builder == null) {
+            builder = deserializedFromOldIntent(context, bytes);
+        }
+        return builder;
+    }
+
+    private static boolean readAndCheckMagicNumber(DataInputStream in, byte[] magic) {
+        try {
+            boolean magicNumberMatch = true;
+            for (int i = 0; i < magic.length; ++i) {
+                byte b = in.readByte();
+                if (b != magic[i]) {
+                    magicNumberMatch = false;
+                    break;
+                }
+            }
+
+            return magicNumberMatch;
+        } catch (Exception e) {
+            return false;
+        }
+    }
+
+    private static Notification deserializeNotificationParcelable(DataInputStream in) {
+        try {
+            if (!readAndCheckMagicNumber(in, UNITY_MAGIC_NUMBER_PARCELLED))
+                return null;
+            int version = in.readInt();
+            if (version < 0 || version > INTENT_SERIALIZATION_VERSION)
+                return null;
+            Intent intent = deserializeParcelable(in);
+            Notification notification = intent.getParcelableExtra(KEY_NOTIFICATION);
+            return notification;
+        } catch (Exception e) {
+            Log.e(TAG_UNITY, "Failed to deserialize notification intent", e);
+        } catch (OutOfMemoryError e) {
+            Log.e(TAG_UNITY, "Failed to deserialize notification intent", e);
+        }
+
+        return null;
+    }
+
+    private static Notification.Builder deserializeNotificationCustom(Context context, DataInputStream in) {
+        try {
+            if (!readAndCheckMagicNumber(in, UNITY_MAGIC_NUMBER))
+                return null;
+            int version = in.readInt();
+            if (version < 0 || version > NOTIFICATION_SERIALIZATION_VERSION)
+                return null;
+
+            // deserialize extras
+            int id = 0;
+            String title, text, smallIcon, largeIcon, bigText, intentData;
+            long fireTime, repeatInterval;
+            boolean usesStopWatch, showWhen, showInForeground = true;
+            Bundle extras = null;
+            String bigPicture = null, bigLargeIcon = null, bigContentTitle = null, bigSummary = null, bigContentDesc = null;
+            boolean bigShowWhenCollapsed = false;
+            if (version < 2) {
+                // no longer serialized since v2
+                extras = deserializeParcelable(in);
+            }
+
+            // before v2 it was extras or variables, since 2 always variables
+            if (extras == null) {
+                // extras serialized manually
+                id = in.readInt();
+                title = deserializeString(in);
+                text = deserializeString(in);
+                smallIcon = deserializeString(in);
+                largeIcon = deserializeString(in);
+                fireTime = in.readLong();
+                repeatInterval = in.readLong();
+                bigText = deserializeString(in);
+                usesStopWatch = in.readBoolean();
+                showWhen = in.readBoolean();
+                intentData = deserializeString(in);
+                if (version > 0)
+                    showInForeground = in.readBoolean();
+
+                if (version >= 3) {
+                    bigPicture = deserializeString(in);
+                    if (bigPicture != null && bigPicture.length() > 0) {
+                        // the following only need to be put in if big picture is there
+                        bigLargeIcon = deserializeString(in);
+                        bigContentTitle = deserializeString(in);
+                        bigContentDesc = deserializeString(in);
+                        bigSummary = deserializeString(in);
+                        bigShowWhenCollapsed = in.readBoolean();
+                    }
+                }
+            } else {
+                title = extras.getString(Notification.EXTRA_TITLE);
+                text = extras.getString(Notification.EXTRA_TEXT);
+                smallIcon = extras.getString(KEY_SMALL_ICON);
+                largeIcon = extras.getString(KEY_LARGE_ICON);
+                fireTime = extras.getLong(KEY_FIRE_TIME, -1);
+                repeatInterval = extras.getLong(KEY_REPEAT_INTERVAL, -1);
+                bigText = extras.getString(Notification.EXTRA_BIG_TEXT);
+                usesStopWatch = extras.getBoolean(Notification.EXTRA_SHOW_CHRONOMETER, false);
+                showWhen = extras.getBoolean(Notification.EXTRA_SHOW_WHEN, false);
+                intentData = extras.getString(KEY_INTENT_DATA);
+            }
+
+            String channelId = deserializeString(in);
+            boolean haveColor = in.readBoolean();
+            int color = 0;
+            if (haveColor)
+                color = in.readInt();
+            int number = in.readInt();
+            boolean shouldAutoCancel = in.readBoolean();
+            String group = deserializeString(in);
+            boolean groupSummary = in.readBoolean();
+            int groupAlertBehavior = in.readInt();
+            String sortKey = deserializeString(in);
+            long when = showWhen ? in.readLong() : 0;
+
+            UnityNotificationManager manager = UnityNotificationManager.getNotificationManagerImpl(context);
+            Notification.Builder builder = manager.createNotificationBuilder(channelId);
+            if (extras != null)
+                builder.setExtras(extras);
+            else {
+                builder.getExtras().putInt(KEY_ID, id);
+                UnityNotificationManager.setNotificationIcon(builder, KEY_SMALL_ICON, smallIcon);
+                UnityNotificationManager.setNotificationIcon(builder, KEY_LARGE_ICON, largeIcon);
+                if (fireTime != -1)
+                    builder.getExtras().putLong(KEY_FIRE_TIME, fireTime);
+                if (repeatInterval != -1)
+                    builder.getExtras().putLong(KEY_REPEAT_INTERVAL, repeatInterval);
+                if (intentData != null)
+                    builder.getExtras().putString(KEY_INTENT_DATA, intentData);
+                builder.getExtras().putBoolean(KEY_SHOW_IN_FOREGROUND, showInForeground);
+            }
+            if (title != null)
+                builder.setContentTitle(title);
+            if (text != null)
+                builder.setContentText(text);
+            if (bigText != null)
+                builder.setStyle(new Notification.BigTextStyle().bigText(bigText));
+            else if (bigPicture != null)
+                manager.setupBigPictureStyle(builder, bigLargeIcon, bigPicture, bigContentTitle, bigContentDesc, bigSummary, bigShowWhenCollapsed);
+            if (haveColor)
+                UnityNotificationManager.setNotificationColor(builder, color);
+            if (number >= 0)
+                builder.setNumber(number);
+            builder.setAutoCancel(shouldAutoCancel);
+            UnityNotificationManager.setNotificationUsesChronometer(builder, usesStopWatch);
+            if (group != null && group.length() > 0)
+                builder.setGroup(group);
+            builder.setGroupSummary(groupSummary);
+            UnityNotificationManager.setNotificationGroupAlertBehavior(builder, groupAlertBehavior);
+            if (sortKey != null && sortKey.length() > 0)
+                builder.setSortKey(sortKey);
+            if (showWhen) {
+                builder.setShowWhen(true);
+                builder.setWhen(when);
+            }
+
+            return builder;
+        } catch (Exception e) {
+            Log.e(TAG_UNITY, "Failed to deserialize notification", e);
+        } catch (OutOfMemoryError e) {
+            Log.e(TAG_UNITY, "Failed to deserialize notification", e);
+        }
+
+        return null;
+    }
+
+    private static Notification.Builder deserializedFromOldIntent(Context context, byte[] bytes) {
+        try {
+            Parcel p = Parcel.obtain();
+            p.unmarshall(bytes, 0, bytes.length);
+            p.setDataPosition(0);
+            Bundle bundle = new Bundle();
+            bundle.readFromParcel(p);
+
+            int id = bundle.getInt(KEY_ID, -1);
+            String channelId = bundle.getString("channelID");
+            String textTitle = bundle.getString("textTitle");
+            String textContent = bundle.getString("textContent");
+            String smallIcon = bundle.getString("smallIconStr");
+            boolean autoCancel = bundle.getBoolean("autoCancel", false);
+            boolean usesChronometer = bundle.getBoolean("usesChronometer", false);
+            long fireTime = bundle.getLong(KEY_FIRE_TIME, -1);
+            long repeatInterval = bundle.getLong(KEY_REPEAT_INTERVAL, -1);
+            String largeIcon = bundle.getString("largeIconStr");
+            int style = bundle.getInt("style", -1);
+            int color = bundle.getInt("color", 0);
+            int number = bundle.getInt("number", 0);
+            String intentData = bundle.getString(KEY_INTENT_DATA);
+            String group = bundle.getString("group");
+            boolean groupSummary = bundle.getBoolean("groupSummary", false);
+            String sortKey = bundle.getString("sortKey");
+            int groupAlertBehaviour = bundle.getInt("groupAlertBehaviour", -1);
+            boolean showTimestamp = bundle.getBoolean("showTimestamp", false);
+
+            Notification.Builder builder = UnityNotificationManager.getNotificationManagerImpl(context).createNotificationBuilder(channelId);
+            builder.getExtras().putInt(KEY_ID, id);
+            builder.setContentTitle(textTitle);
+            builder.setContentText(textContent);
+            UnityNotificationManager.setNotificationIcon(builder, KEY_SMALL_ICON, smallIcon);
+            builder.setAutoCancel(autoCancel);
+            builder.setUsesChronometer(usesChronometer);
+            builder.getExtras().putLong(KEY_FIRE_TIME, fireTime);
+            builder.getExtras().putLong(KEY_REPEAT_INTERVAL, repeatInterval);
+            UnityNotificationManager.setNotificationIcon(builder, KEY_LARGE_ICON, largeIcon);
+            if (style == 2)
+                builder.setStyle(new Notification.BigTextStyle().bigText(textContent));
+            if (color != 0)
+                UnityNotificationManager.setNotificationColor(builder, color);
+            if (number >= 0)
+                builder.setNumber(number);
+            if (intentData != null)
+                builder.getExtras().putString(KEY_INTENT_DATA, intentData);
+            if (null != group && group.length() > 0)
+                builder.setGroup(group);
+            builder.setGroupSummary(groupSummary);
+            if (null != sortKey && sortKey.length() > 0)
+                builder.setSortKey(sortKey);
+            UnityNotificationManager.setNotificationGroupAlertBehavior(builder, groupAlertBehaviour);
+            builder.setShowWhen(showTimestamp);
+            return builder;
+        } catch (Exception e) {
+            Log.e(TAG_UNITY, "Failed to deserialize old style notification", e);
+        } catch (OutOfMemoryError e) {
+            Log.e(TAG_UNITY, "Failed to deserialize old style notification", e);
+        }
+
+        return null;
+    }
+
+    private static String deserializeString(DataInputStream in) throws IOException {
+        int length = in.readInt();
+        if (length <= 0)
+            return null;
+        byte[] bytes = new byte[length];
+        int didRead = in.read(bytes);
+        if (didRead != bytes.length)
+            throw new IOException("Insufficient amount of bytes read");
+        return new String(bytes, StandardCharsets.UTF_8);
+    }
+
+    private static <T extends Parcelable> T deserializeParcelable(DataInputStream in) throws IOException {
+        int length = in.readInt();
+        if (length <= 0)
+            return null;
+        byte[] bytes = new byte[length];
+        int didRead = in.read(bytes);
+        if (didRead != bytes.length)
+            throw new IOException("Insufficient amount of bytes read");
+
+        try {
+            Parcel p = Parcel.obtain();
+            p.unmarshall(bytes, 0, bytes.length);
+            p.setDataPosition(0);
+            Bundle b = p.readParcelable(UnityNotificationUtilities.class.getClassLoader());
+            p.recycle();
+            if (b != null) {
+                return b.getParcelable("obj");
+            }
+        } catch (Exception e) {
+            Log.e(TAG_UNITY, "Failed to deserialize parcelable", e);
+        } catch (OutOfMemoryError e) {
+            Log.e(TAG_UNITY, "Failed to deserialize parcelable", e);
+        }
+
+        return null;
+    }
+
+    // Returns Activity class to be opened when notification is tapped
+    // Search is done in this order:
+    //   * class specified in meta-data key custom_notification_android_activity
+    //   * the only enabled activity with name ending in either .UnityPlayerActivity or .UnityPlayerGameActivity
+    //   * the only enabled activity in the package
+    protected static Class<?> getOpenAppActivity(Context context) {
+        try {
+            PackageManager pm = context.getPackageManager();
+            ApplicationInfo ai = pm.getApplicationInfo(context.getPackageName(), PackageManager.GET_META_DATA);
+            Bundle bundle = ai.metaData;
+
+            if (bundle.containsKey("custom_notification_android_activity")) {
+                try {
+                    return Class.forName(bundle.getString("custom_notification_android_activity"));
+                } catch (ClassNotFoundException e) {
+                    Log.e(TAG_UNITY, "Specified activity class for notifications not found: " + e.getMessage());
+                }
+            }
+
+            Log.w(TAG_UNITY, "No custom_notification_android_activity found, attempting to find app activity class");
+
+            ActivityInfo[] aInfo = pm.getPackageInfo(context.getPackageName(), PackageManager.GET_ACTIVITIES).activities;
+            if (aInfo == null) {
+                Log.e(TAG_UNITY, "Could not get package activities");
+                return null;
+            }
+
+            String activityClassName = null;
+            boolean activityIsUnity = false, activityConflict = false;
+            for (ActivityInfo info : aInfo) {
+                // activity alias not supported
+                if (!info.enabled || info.targetActivity != null)
+                    continue;
+
+                boolean candidateIsUnity = isUnityActivity(info.name);
+                if (activityClassName == null) {
+                    activityClassName = info.name;
+                    activityIsUnity = candidateIsUnity;
+                    continue;
+                }
+
+                // two Unity activities is a hard conflict
+                // two non-Unity activities is a conflict unless we find a Unity activity later on
+                if (activityIsUnity == candidateIsUnity) {
+                    activityConflict = true;
+                    if (activityIsUnity && candidateIsUnity)
+                        break;
+                    continue;
+                }
+
+                if (candidateIsUnity) {
+                    activityClassName = info.name;
+                    activityIsUnity = candidateIsUnity;
+                    activityConflict = false;
+                }
+            }
+
+            if (activityConflict) {
+                Log.e(TAG_UNITY, "Multiple choices for activity for notifications, set activity explicitly in Notification Settings");
+                return null;
+            }
+
+            if (activityClassName == null) {
+                Log.e(TAG_UNITY, "Activity class for notifications not found");
+                return null;
+            }
+
+            return Class.forName(activityClassName);
+        } catch (PackageManager.NameNotFoundException e) {
+            e.printStackTrace();
+        } catch (ClassNotFoundException e) {
+            Log.e(TAG_UNITY, "Failed to find activity class: " + e.getMessage());
+        }
+
+        return null;
+    }
+
+    private static boolean isUnityActivity(String name) {
+        return name.endsWith(".UnityPlayerActivity") || name.endsWith(".UnityPlayerGameActivity");
+    }
+
+    protected static Notification.Builder recoverBuilder(Context context, Notification notification) {
+        try {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+                Notification.Builder builder = Notification.Builder.recoverBuilder(context, notification);
+                // extras not recovered, transfer manually
+                builder.setExtras(notification.extras);
+                return builder;
+            }
+        } catch (Exception e) {
+            Log.e(TAG_UNITY, "Failed to recover builder for notification!", e);
+        } catch (OutOfMemoryError e) {
+            Log.e(TAG_UNITY, "Failed to recover builder for notification!", e);
+        }
+
+        return recoverBuilderCustom(context, notification);
+    }
+
+    private static Notification.Builder recoverBuilderCustom(Context context, Notification notification) {
+        String channelID = notification.extras.getString(KEY_CHANNEL_ID);
+        Notification.Builder builder = UnityNotificationManager.getNotificationManagerImpl(context).createNotificationBuilder(channelID);
+        UnityNotificationManager.setNotificationIcon(builder, KEY_SMALL_ICON, notification.extras.getString(KEY_SMALL_ICON));
+        String largeIcon = notification.extras.getString(KEY_LARGE_ICON);
+        if (largeIcon != null && !largeIcon.isEmpty())
+            UnityNotificationManager.setNotificationIcon(builder, KEY_LARGE_ICON, largeIcon);
+        builder.setContentTitle(notification.extras.getString(Notification.EXTRA_TITLE));
+        builder.setContentText(notification.extras.getString(Notification.EXTRA_TEXT));
+        builder.setAutoCancel(0 != (notification.flags & Notification.FLAG_AUTO_CANCEL));
+        if (notification.number >= 0)
+            builder.setNumber(notification.number);
+        String bigText = notification.extras.getString(Notification.EXTRA_BIG_TEXT);
+        if (bigText != null)
+            builder.setStyle(new Notification.BigTextStyle().bigText(bigText));
+
+        builder.setWhen(notification.when);
+        String group = notification.getGroup();
+        if (group != null && !group.isEmpty())
+            builder.setGroup(group);
+        builder.setGroupSummary(0 != (notification.flags & Notification.FLAG_GROUP_SUMMARY));
+        String sortKey = notification.getSortKey();
+        if (sortKey != null && !sortKey.isEmpty())
+            builder.setSortKey(sortKey);
+        builder.setShowWhen(notification.extras.getBoolean(Notification.EXTRA_SHOW_WHEN, false));
+        Integer color = UnityNotificationManager.getNotificationColor(notification);
+        if (color != null)
+            UnityNotificationManager.setNotificationColor(builder, color);
+        UnityNotificationManager.setNotificationUsesChronometer(builder, notification.extras.getBoolean(Notification.EXTRA_SHOW_CHRONOMETER, false));
+        UnityNotificationManager.setNotificationGroupAlertBehavior(builder, UnityNotificationManager.getNotificationGroupAlertBehavior(notification));
+
+        builder.getExtras().putInt(KEY_ID, notification.extras.getInt(KEY_ID, 0));
+        builder.getExtras().putLong(KEY_REPEAT_INTERVAL, notification.extras.getLong(KEY_REPEAT_INTERVAL, 0));
+        builder.getExtras().putLong(KEY_FIRE_TIME, notification.extras.getLong(KEY_FIRE_TIME, 0));
+        String intentData = notification.extras.getString(KEY_INTENT_DATA);
+        if (intentData != null && !intentData.isEmpty())
+            builder.getExtras().putString(KEY_INTENT_DATA, intentData);
+
+        return builder;
+    }
+}