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Notifications Tutorial Part 1 – NOTIFICATION CHANNELS – Android Studio Tutorial

admin by admin
January 30, 2020
in Công Nghệ
30
Notifications Tutorial Part 1 – NOTIFICATION CHANNELS – Android Studio Tutorial



In this video series we will learn everything about notifications in Android.
In part 1 we will start by creating notification channels (Categories) which are necessary since Android Oreo (API level 26) to be able to show any notifications. These channels should be created as soon as we start our app, so we will do it in the onCreate method of a class that extends Application.
When we create these channels, we have to pass an ID, a name and an importance level. Additionally we can customize the channel further, like enabling the LED, activating vibration or changing the sound, but the user has ultimate control over the channel’s behavior.
When our NotificationChannel objects are created, we pass them to the NotificationManager’s createNotificationChannel method.
When we then want to show a notification, we create it with the NotificationCompat.Builder, where we can set a title, a message, an icon, a priority level, a category and many more customization options, and then we pass this
Notification object to the NotificationManagerCompat’s notify method, where we also have to pass an ID which we can later use to update or cancel this particular notification.

Documentation:
NotificationManager:

NotificationChannel:

NotificationCompat:

NotificationCompat.Builder:

Watch the whole playlist:

Example code:

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Comments 30

  1. Stanislav Omelchenko says:
    3 years ago

    Thank. It works. But I don't understand what is the point of sending notifications to yourself. I installed the same application on another phone and received a notification on only one. A better way to use Firebase for that. I'm right?

    Reply
  2. Ryan Guitar Godfrey says:
    3 years ago

    I'm newer to Android and writing a social media app. I've got friend requests working but wanted to know how to send a notification upon sending a friend request. Can I customize this to do that? Thanks😎

    Reply
  3. Daniel Goldbach says:
    3 years ago

    Kannst dus nicht auch gleich auf deutsch machen xD

    Reply
  4. Federico Airola says:
    3 years ago

    Thanks for your helpful explanation!
    I have a little request.
    At 5:49 you show some very interesting settings to customize the way notifications arrive on the smartphone. I have to set up this strings (channel1.set…) in order to enable all possibilities and get a full alerting notification, but I don't know how to deal with arguments in the (). Can you write me above this comment a little peace of code to enable a full-alarm notification? I mean with default sound, vibration, LEDs etc…
    Thank you, unfortunately I didn't find any guidelines to write it by myself. I don't know how this strings work.

    Reply
  5. Sampelmind81 says:
    3 years ago

    Hey, i need your advice! Lets say i released an app on the google play store and a few months later i like to provide an update to all the users, that already downloaded my app. Is it allowed to load this update directly from a server like firestore to the app? Thanks!

    Reply
  6. Naman Jain says:
    3 years ago

    Sir , Can we build an app by which we could send notification to multiple mobile phones having that same app somewhat like app to app communication.
    Sir plz help me kinda stucked .
    If could build then share full process..

    Reply
  7. Gordon Freeman says:
    3 years ago

    why did you call the Notification object NotificationCompat.Builder? what we need to use. NotificationCompat.Builder vs Notification.Builder .. which version is more suitable for which one. Thank you!

    Reply
  8. Ashok Sn says:
    3 years ago

    This app will Not run on versions less than Oreo ?

    Reply
  9. giannis fragoulis says:
    3 years ago

    What if we want to switch the vibration (channel.setVibrationPattern) with our app settings?? Because it's default settings and cannot be changed..how can this be done?

    Reply
  10. メメ says:
    3 years ago

    Will NotificationCompat work on below andeoid 5?

    Reply
  11. Alexey Suzdalenko says:
    3 years ago

    fank You for Alexey Suzdalenko

    Reply
  12. Louis Murphy says:
    3 years ago

    Thank you for the video.

    I have a question : if I run that app with the notification feature on multiple devices (5devices ). Can one end share one notification to all those devices ??

    Reply
  13. Video Hub says:
    3 years ago

    Its giving error on (new NotificationCompat) plz help me

    Reply
  14. phism says:
    3 years ago

    Does creating these in the App class take up memory for the life of the app?

    Reply
  15. the public says:
    3 years ago

    am trying for like a week to create a NCH to kitkat and it didn't work keep saying that its required 26API 😔

    Reply
  16. examen1996 says:
    3 years ago

    Dein Tutorial ist echt PRIMA !!

    Reply
  17. vo trung says:
    3 years ago

    How to send information like messenger

    on Android and IOS Devices will show a notification

    Reply
  18. Asma Khan says:
    3 years ago

    How can we send notification to the specific email address?

    Reply
  19. Hùng Vương Đoàn says:
    3 years ago

    it works, thanks

    Reply
  20. Jason Panella says:
    3 years ago

    Do you have any videos/tutorials on pending notifications?

    Reply
  21. Marek Štorek says:
    3 years ago

    Nice tutorial!
    But..
    I have little problem. After clicking one of the button the notification doesnt show, I can only see logo on the topbar, or when I scroll down.
    However it is Nice VIDEO –> Like & Subscribe given

    Reply
  22. Fayssal El Ansari says:
    3 years ago

    hans, can you please make a geofencing tutorial?

    Reply
  23. Joseph Ali says:
    3 years ago

    I'm creating an app which receive notifications from FCM. I'm able to get notifications while the app in foreground or in the background. I have 2 testing phones :{ Vivo : Pie 9 } and {OnePlus 1: Marshmallow }

    Vivo could't receive the notification if the app is killed. However, OnePlus could receive the notification.

    Reply
  24. Gonzalo Illán Salvador says:
    3 years ago

    much advertisement

    Reply
  25. Timothy Maina says:
    3 years ago

    Thanks a lot , I understand you better than my college professor

    Reply
  26. SandraNitu says:
    3 years ago

    thank you for the video and the source code . it works greate !

    Reply
  27. Harvinder Singh says:
    3 years ago

    notification dot isn't visible even if it is enabled in the app settings ?

    Reply
  28. Harvinder Singh says:
    3 years ago

    it's not working on android nougat why ?

    Reply
  29. Amy Dahay says:
    3 years ago

    Hello sir, how can I retrieve those inputted data to show in an activity instead of showing in notification? Thanks ahead.

    Reply
  30. Nemanja Tomanović says:
    3 years ago

    This is great tutorial, this is your first tutorial that I'm watching but now I'm gonna check the rest for sure :). Keep it up bro 👍

    Reply

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