Проблема с уведомлением о миграции не работает

Question

Я собираюсь перенести мое приложение на Android 8. После обновления версии SDK с 25 на 26 больше не было уведомлений о моем приложении.

Мое приложение - это приложение для загрузки изображений и видео из Instagram,Но когда пользователь заходит в Instagram и копирует ссылку с изображения или видео, появляется уведомление о загрузке изображения.С переходом на Android 8 не приходит уведомление о загрузке изображения или видео ...

Пожалуйста, помогите мне!Это действительно важно.

Вот мой файл проекта Gradle:

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'
        classpath 'com.novoda:bintray-release:0.3.4'
        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.3'
        classpath 'com.google.gms:google-services:3.2.0'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        maven {
            url "https://jitpack.io"
        }
        google()
    }

}

task clean(type: Delete) {
    delete rootProject.buildDir
}

А вот мой файл приложения Gradle:

buildscript {
    repositories {
        maven { url 'https://maven.fabric.io/public' }
        maven { url "https://s3.amazonaws.com/moat-sdk-builds" }
    }


    dependencies {
        classpath 'io.fabric.tools:gradle:1.+'
    }
}

apply plugin: 'com.android.application'
apply plugin: 'io.fabric'

repositories {
    maven { url 'https://maven.fabric.io/public' }
    maven { url "https://s3.amazonaws.com/moat-sdk-builds" }
}



android {
    compileSdkVersion 25
    buildToolsVersion '27.0.3'

    defaultConfig {
        applicationId "com.instdownload"
        minSdkVersion 16
        targetSdkVersion 25
        versionCode 10
        versionName "1.0.9"
        multiDexEnabled true
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'


            lintOptions {
                checkReleaseBuilds false
                // Or, if you prefer, you can continue to check for errors in release builds,
                // but continue the build even when errors are found:
                abortOnError false
            }
        }
    }

}

dependencies {
    testCompile 'junit:junit:4.12'
    compile 'com.android.support.constraint:constraint-layout:1.1.0'
    //noinspection GradleCompatible
    compile 'com.android.support:appcompat-v7:25.3.1'
    compile 'com.android.support:cardview-v7:25.3.1'
    compile 'com.android.support:multidex:1.0.1'
    compile 'com.android.support:recyclerview-v7:25.3.1'
    compile 'com.android.support:design:25.3.1'
    compile 'com.android.support:support-v4:25.4.0'
    compile 'com.github.bumptech.glide:glide:3.7.0'
    compile 'com.github.devlight.navigationtabstrip:navigationtabstrip:1.0.4'
    compile 'com.davemorrissey.labs:subsampling-scale-image-view:3.5.0'
    compile 'com.google.android.gms:play-services-ads:15.0.1'
    compile 'com.google.firebase:firebase-ads:15.0.1'
    compile 'com.google.firebase:firebase-core:15.0.2'
    compile 'com.github.paolorotolo:appintro:3.4.0'
    compile group: 'commons-io', name: 'commons-io', version: '2.4'
    compile 'org.jsoup:jsoup:1.10.2'
    compile 'com.google.ads.mediation:mopub:4.20.0.0'
    compile 'io.github.kobakei:ratethisapp:1.2.0'
    compile('com.mikepenz:materialdrawer:5.8.2@aar') {
        transitive = true


    }
    compile('com.crashlytics.sdk.android:crashlytics:2.9.2@aar') {
        transitive = true;
    }
    compile('com.crashlytics.sdk.android:answers:1.4.1@aar') {
        transitive = true;
    }
    compile('com.mopub:mopub-sdk:4.20.0@aar') {
        transitive = true
    }

}
apply plugin: 'com.google.gms.google-services'

Вот мой BroadcastService

package com.instdownload;

import android.annotation.SuppressLint;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.ClipboardManager;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.graphics.BitmapFactory;
import android.os.IBinder;
import android.support.v4.app.NotificationCompat;
import android.util.Log;

public class Broadcastservice extends Service {

    ClipboardManager clipBoard;
    NotificationCompat.Builder mBuilder;
    NotificationManager mNotificationManager;
    private final BroadcastReceiver close_notification = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String ns = Context.NOTIFICATION_SERVICE;
            NotificationManager nMgr = (NotificationManager) getApplicationContext().getSystemService(ns);
            nMgr.cancel(10245);
        }
    };

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        registerReceiver(close_notification, new IntentFilter("close_notification"));
        clipBoard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
        clipBoard.addPrimaryClipChangedListener(new ClipboardListener());
        return START_STICKY;
    }

    @SuppressLint("NewApi")
    private class ClipboardListener implements ClipboardManager.OnPrimaryClipChangedListener {
        public void onPrimaryClipChanged() {
            Log.i("service", clipBoard.getText().toString());
            final SharedPreferences appstart = getSharedPreferences("appstart", MainActivity.MODE_PRIVATE);
            SharedPreferences.Editor editor1 = appstart.edit();
            editor1.putInt("flag", 1);
            editor1.putString("link", clipBoard.getText().toString());
            editor1.commit();
            updateNotification();

        }
    }


    private void updateNotification() {
        final SharedPreferences appstart = getSharedPreferences("appstart", MainActivity.MODE_PRIVATE);
        if (appstart.getInt("flag", 0) == 1 && appstart.getString("link", "null").contains("instagram")) {
            Intent notificationIntent = new Intent(getApplicationContext(), MainActivity.class);
            notificationIntent.setAction(Intent.ACTION_MAIN);
            notificationIntent.addCategory(Intent.CATEGORY_LAUNCHER);
            notificationIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            PendingIntent resultPendingIntent = PendingIntent.getActivity(getApplicationContext(), 0, notificationIntent, 0);
            mBuilder = new NotificationCompat.Builder(getApplicationContext());
            Notification notification = mBuilder
                    .setSmallIcon(R.drawable.ic_notify_main)
                    .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher))
                    .setContentTitle(getResources().getString(R.string.app_name))
                    .setWhen(0)
                    .setAutoCancel(true)
                    .setDefaults(Notification.DEFAULT_ALL)
                    .setContentIntent(resultPendingIntent)
                    .setPriority(Notification.PRIORITY_HIGH)
                    .setContentText(getResources().getString(R.string.download))
                    .build();

            mNotificationManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);
            mNotificationManager.notify(10245, notification);
        }
    }


    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onDestroy() {
        String ns = Context.NOTIFICATION_SERVICE;
        NotificationManager nMgr = (NotificationManager) getApplicationContext().getSystemService(ns);
        nMgr.cancel(10245);
        super.onDestroy();
    }

}

А вот мой Сервис загрузки

package com.instdownload;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Environment;
import android.os.IBinder;
import android.support.annotation.Nullable;
import android.support.v4.app.NotificationCompat;
import android.util.Log;
import android.widget.Toast;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;

public class DownloadService extends Service {

    File VideoDirectory, file;
    String appname, video_fname;
    NotificationManager mNotificationManager;
    HashMap<Integer, NotificationCompat.Builder> notificationHashMap = new HashMap<>();
    URLConnection conection;
    InputStream input;
    OutputStream output;
    int lenghtOfFile;
    Boolean Iscancelled = false;
    DownloadFileFromURL download;
    public static final String A3 = "679f46b";

    private final BroadcastReceiver cancel_download = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            try {
                if (download.getStatus() == AsyncTask.Status.RUNNING) {
                    download.cancel(true);
                }
                File file = new File(Environment.getExternalStorageDirectory(), AllStaticData.RootDirectory + "/" + AllStaticData.VideoDirectory + "/");
                Iscancelled = true;
                finishedDownload(3333);
                Toast.makeText(getApplicationContext(), "Download cancelled!", Toast.LENGTH_LONG).show();
            } catch (Exception e) {
                e.printStackTrace();
                Log.i("Unable", "" + e);
                Toast.makeText(getApplicationContext(), "Unable to stop download!", Toast.LENGTH_LONG).show();
            }
        }
    };

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {
        super.onCreate();

    }

    @Override
    public void onStart(Intent intent, int startId) {

    }

    private String getpreferences(String key) {
        SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("pref", 0);
        return sharedPreferences.getString(key, "0");

    }

    private void SavePreferences(String key, String value) {
        SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("pref", 0);
        SharedPreferences.Editor editor = sharedPreferences.edit();
        editor.putString(key, value);
        editor.commit();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        appname = getResources().getString(R.string.app_name);
        mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        registerReceiver(cancel_download, new IntentFilter("cancel_download"));
        try {
            video_fname = intent.getStringExtra("video_fname");
            download = new DownloadFileFromURL();
            download.execute(intent.getStringExtra("url"), video_fname);
            SavePreferences("video_fname", intent.getStringExtra("video_fname"));
            SavePreferences("url", intent.getStringExtra("url"));
            SavePreferences("thumb", intent.getStringExtra("thumb"));
        } catch (NullPointerException e) {
            Log.i("", "" + e);
            video_fname = getpreferences("video_fname");
            download = new DownloadFileFromURL();
            download.execute(getpreferences("url"), video_fname);
        }
        return START_STICKY;
    }


    private class DownloadFileFromURL extends AsyncTask<String, String, String> {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            setNotification(video_fname, "Downloading video...", 3333);
        }

        @Override
        protected String doInBackground(String... f_url) {
            int count;
            try {
                URL url = new URL(f_url[0]);
                conection = url.openConnection();
                conection.connect();
                lenghtOfFile = conection.getContentLength();
                input = new BufferedInputStream(url.openStream(), 8192);
                VideoDirectory = new File(Environment.getExternalStorageDirectory(), AllStaticData.RootDirectory + "/" + AllStaticData.VideoDirectory + "/");
                if (!VideoDirectory.exists()) {
                    VideoDirectory.mkdirs();
                }
                file = new File(VideoDirectory, video_fname);
                output = new FileOutputStream(file);
                byte data[] = new byte[1024];
                long total = 0;
                while ((count = input.read(data)) != -1) {
                    total += count;
                    publishProgress("" + (int) ((total * 100) / lenghtOfFile));
                    output.write(data, 0, count);
                }
                output.flush();
                output.close();
                input.close();

            } catch (Exception e) {
                Log.e("Error: ", e.getMessage());
            }

            return null;
        }

        protected void onProgressUpdate(String... progress) {
            Log.i("progress", "" + progress[0]);
            Intent broadcast1 = new Intent("update_progress");
            broadcast1.putExtra("progress", Integer.parseInt(progress[0]));
            broadcast1.putExtra("path", file.getAbsolutePath());
            broadcast1.putExtra("thumb", getpreferences("thumb"));
            broadcast1.putExtra("strdata", getpreferences("url"));
            sendBroadcast(broadcast1);
        }

        @Override
        protected void onPostExecute(String file_url) {
            if (!Iscancelled) {
                Intent broadcast1 = new Intent("update_progress");
                broadcast1.putExtra("progress", (int) 100);
                broadcast1.putExtra("path", file.getAbsolutePath());
                sendBroadcast(broadcast1);
                finishedDownload(3333);
            }
        }
    }

    private void setNotification(String title, String content, int notifyId) {

        Intent notificationIntent = new Intent(getApplicationContext(), MainActivity.class);
        notificationIntent.setAction(Intent.ACTION_MAIN);
        notificationIntent.addCategory(Intent.CATEGORY_LAUNCHER);
        notificationIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        PendingIntent resultPendingIntent = PendingIntent.getActivity(getApplicationContext(), 0, notificationIntent, 0);
        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(getApplicationContext());
        Notification notification = mBuilder
                .setContentTitle(title)
                .setContentText(content)
                .setContentIntent(resultPendingIntent)
                .setSmallIcon(android.R.drawable.stat_sys_download)
                .build();
        notification.flags |= Notification.FLAG_NO_CLEAR | Notification.FLAG_ONGOING_EVENT;
        mNotificationManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);
        mNotificationManager.notify(9997, notification);
        notificationHashMap.put(notifyId, mBuilder);
    }

    private void finishedDownload(int notifyId) {
        try {
            notificationHashMap.get(notifyId).setContentText("Finished");
            notificationHashMap.get(notifyId).setSmallIcon(android.R.drawable.stat_sys_download_done);
            mNotificationManager.notify(notifyId, notificationHashMap.get(notifyId).build());
            mNotificationManager.cancel(notifyId);
            unregisterReceiver(cancel_download);
        } catch (Exception e) {
            Log.i("", "" + e);
        }
        Intent iii = new Intent(getApplicationContext(), DownloadService.class);
        stopService(iii);
    }

    @Override
    public void onDestroy() {
        mNotificationManager.cancel(9997);
        super.onDestroy();
    }

}

ПОЖАЛУЙСТА, ПОМОГИТЕ МНЕ УСТАНОВИТЬ ПРОБЛЕМУ, я в отчаянии