how to create a Progress bar notification in android studio and performing task of Downloading any file from server

how to create a Progress bar notification in android studio. this type of notification is used when we are performing any continues task link Downloading any file from server

                                 

step :1 create a App class and create an notification channels

public class App extends Application {

    public static final String CHANNEL_ID = "channel1";

    @Override

    public void onCreate() {

        super.onCreate();

        creatnotificationchannel();

    }

    private void creatnotificationchannel() {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

            CharSequence name = "personal notification";

            String description = "personal informaton all are here";

            int importance = NotificationManager.IMPORTANCE_DEFAULT;

            NotificationChannel notificationChannel = new NotificationChannel(CHANNEL_ID, name, importance);

            notificationChannel.setDescription(description);

            NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

            notificationManager.createNotificationChannel(notificationChannel);

        }

    }

}

step :2 add app class into menifest.xml file

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.example.notifiaction">

    <application

        android:name=".App" // This is app class 

        android:allowBackup="true"

        android:icon="@mipmap/ic_launcher"

        android:label="@string/app_name"

        android:roundIcon="@mipmap/ic_launcher_round"

        android:supportsRtl="true"

        android:theme="@style/AppTheme">

        <activity android:name=".MainActivity">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

        </application>

</manifest>

step 3: progress bar notification here we are using Runnable()  to perform a runnable task and update progress data . on complete this we show a Complete notification that show task is completed

  public void N7_simplenotification(View view) {

        final int ProcessmaX = 100;

        final NotificationCompat.Builder builder = new NotificationCompat.Builder(this, CHANNEL_ID);

        builder.setContentTitle("Downloading");

        builder.setSmallIcon(R.drawable.ic_file_download_black_24dp);

        builder.setContentText("Phir Hera Pheri Full HD 2010 Movie");

        builder.setOngoing(true);

        builder.setProgress(ProcessmaX, 0, false);

        builder.setPriority(NotificationCompat.PRIORITY_LOW);

        final NotificationManagerCompat notificationManagerCompat = NotificationManagerCompat.from(this);

        notificationManagerCompat.notify(1, builder.build());

        new Thread(new Runnable() {

            @Override

            public void run() {

                SystemClock.sleep(100);

                for (int p = 0; p <= ProcessmaX; p += 10) {

                    builder.setProgress(ProcessmaX, p, false);

                    notificationManagerCompat.notify(1, builder.build());

                    SystemClock.sleep(1000);

                }

                builder.setContentText("Download finished");

                builder.setProgress(0, 0, false);

                builder.setOngoing(false);

                notificationManagerCompat.notify(1, builder.build());

            }

        }).start();

    }

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