NotificationCompat Builder deprecated in Android O

Question

After upgrading my project to Android O  buildToolsVersion  26 0 1    Lint in Android Studio is showing a deprecated warning for the follow notification builder method   new NotificationCompat Builder context    The problem is  Android Developers update their Documentation describing NotificationChannel to support notifications in Android O  and provide us with a snippet  yet with the same deprecated warning   Notification notification   new Notification Builder MainActivity this           setContentTitle  New Message            setContentText  You ve received new messages             setSmallIcon R drawable ic notify status           setChannelId CHANNEL ID           build        Notifications Overview  My question  Is there is any other solution for building notification  and still support Android O   A solution I found is to pass the channel ID as a parameter in Notification Builder constructor  But this solution is not exactly reusable   new Notification Builder MainActivity this   channel id

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Need to declare a Notification channel with Notification Channel ID  Build notification with that channel ID   For example          public static final String NOTIFICATION CHANNEL ID   MyLocationService class getSimpleName            NotificationChannel channel   new NotificationChannel NOTIFICATION CHANNEL ID                  NOTIFICATION CHANNEL ID   name                   NotificationManager IMPORTANCE HIGH    NotificationManager notifManager    NotificationManager  getSystemService Context NOTIFICATION SERVICE    notifManager createNotificationChannel channel     NotificationCompat Builder builder   new NotificationCompat Builder this  NOTIFICATION CHANNEL ID                   setContentTitle getString R string app name                    setContentText getString R string notification text                    setOngoing true                   setContentIntent broadcastIntent                   setSmallIcon R drawable ic tracker                   setPriority PRIORITY HIGH                   setCategory Notification CATEGORY SERVICE            startForeground 1  builder build

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Notification notification   new Notification Builder MainActivity this           setContentTitle  New Message            setContentText  You ve received new messages             setSmallIcon R drawable ic notify status           setChannelId CHANNEL ID           build        Right code  will be    Notification Builder notification new Notification Builder this    with dependency 26 0 1 and new updated dependencies such as 28 0 0   Some users use this code in the form of this    Notification notification new NotificationCompat Builder this   this is also wrong code    So Logic is that which Method you will declare or initilize then the same methode on Right side will be use for Allocation  if in Leftside of   you will use some method then the same method will be use in right side of   for Allocation with new   Try this code   It will sure work

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This constructor was deprecated in API level 26 1 0  use NotificationCompat Builder Context  String  instead  All posted Notifications must specify a NotificationChannel Id

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Instead of checking for Build VERSION SDK INT  gt   Build VERSION CODES O as many answers suggest  there is a slightly simpler way -  Add the following line to the application section of AndroidManifest xml file as explained in the Set Up a Firebase Cloud Messaging Client App on Android doc        lt meta-data         android name  com google firebase messaging default notification channel id           android value   string default notification channel id    gt    Then add a line with a channel name to the values strings xml file    lt string name  default notification channel id  gt default lt  string gt    After that you will be able to use the new version of NotificationCompat Builder constructor with 2 parameters  since the old constructor with 1 parameter has been deprecated in Android Oreo    private void sendNotification String title  String body        Intent i   new Intent this  MainActivity class       i addFlags Intent FLAG ACTIVITY CLEAR TOP       PendingIntent pi   PendingIntent getActivity this              0    Request code                 i              PendingIntent FLAG ONE SHOT        Uri sound   RingtoneManager getDefaultUri RingtoneManager TYPE NOTIFICATION        NotificationCompat Builder builder   new NotificationCompat Builder this           getString R string default notification channel id                setSmallIcon R mipmap ic launcher               setContentTitle title               setContentText body               setAutoCancel true               setSound sound               setContentIntent pi        NotificationManager manager             NotificationManager  getSystemService Context NOTIFICATION SERVICE        manager notify 0  builder build

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Call the 2-arg constructor  For compatibility with Android O  call support-v4 NotificationCompat Builder Context context  String channelId   When running on Android N or earlier  the channelId will be ignored  When running on Android O  also create a NotificationChannel with the same channelId   Out of date sample code  The sample code on several JavaDoc pages such as Notification Builder calling new Notification Builder mContext  is out of date   Deprecated constructors  Notification Builder Context context  and v4 NotificationCompat Builder Context context  are deprecated in favor of Notification Compat  Builder Context context  String channelId    See Notification Builder android content Context  and v4 NotificationCompat Builder Context context     Deprecated class  The entire class v7 NotificationCompat Builder is deprecated   See v7 NotificationCompat Builder   Previously  v7 NotificationCompat Builder was needed to support NotificationCompat MediaStyle  In Android O  there s a v4 NotificationCompat MediaStyle in the media-compat library s android support v4 media package  Use that one if you need MediaStyle   API 14   In Support Library from 26 0 0 and higher  the support-v4 and support-v7 packages both support a minimum API level of 14  The v  names are historical   See Recent Support Library Revisions

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It is mentioned in the documentation that the builder method NotificationCompat Builder Context context  has been deprecated  And we have to use the constructor which has the channelId parameter  NotificationCompat Builder Context context  String channelId   NotificationCompat Builder Documentation   This constructor was deprecated in API level 26 0 0-beta1  use NotificationCompat Builder Context  String  instead  All posted Notifications must specify a NotificationChannel Id   Notification Builder Documentation   This constructor was deprecated in API level 26  use Notification Builder Context  String  instead  All posted Notifications must specify a NotificationChannel Id   If you want to reuse the builder setters  you can create the builder with the channelId  and pass that builder to a helper method and set your preferred settings in that method

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Simple Sample     public void showNotification  String from  String notification  Intent intent            PendingIntent pendingIntent   PendingIntent getActivity                  context                  Notification ID                  intent                  PendingIntent FLAG UPDATE CURRENT                      String NOTIFICATION CHANNEL ID    quot my channel id 01 quot           NotificationManager notificationManager    NotificationManager  context getSystemService Context NOTIFICATION SERVICE             if  Build VERSION SDK INT  gt   Build VERSION CODES O                NotificationChannel notificationChannel   new NotificationChannel NOTIFICATION CHANNEL ID   quot My Notifications quot   NotificationManager IMPORTANCE DEFAULT                   Configure the notification channel              notificationChannel setDescription  quot Channel description quot                notificationChannel enableLights true               notificationChannel setLightColor Color RED               notificationChannel setVibrationPattern new long   0  1000  500  1000                notificationChannel enableVibration true               notificationManager createNotificationChannel notificationChannel                       NotificationCompat Builder builder   new NotificationCompat Builder context  NOTIFICATION CHANNEL ID           Notification mNotification   builder                  setContentTitle from                   setContentText notification                      setTicker  quot Hearty365 quot                      setContentInfo  quot Info quot                           setPriority Notification PRIORITY MAX                    setContentIntent pendingIntent                    setAutoCancel true                     setDefaults Notification DEFAULT ALL                     setWhen System currentTimeMillis                     setSmallIcon R mipmap ic launcher                   setLargeIcon BitmapFactory decodeResource context getResources    R mipmap ic launcher                    build             notificationManager notify   notification id  Notification ID  mNotification

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Here is working code for all android versions as of API LEVEL 26  with backward compatibility    NotificationCompat Builder notificationBuilder   new NotificationCompat Builder getContext     M CH ID             notificationBuilder setAutoCancel true                   setDefaults Notification DEFAULT ALL                   setWhen System currentTimeMillis                     setSmallIcon R drawable ic launcher                   setTicker  Hearty365                    setPriority Notification PRIORITY MAX     this is deprecated in API 26 but you can still use for below 26  check below update for 26 API                  setContentTitle  Default notification                    setContentText  Lorem ipsum dolor sit amet  consectetur adipiscing elit                     setContentInfo  Info     NotificationManager notificationManager    NotificationManager  getContext   getSystemService Context NOTIFICATION SERVICE   notificationManager notify 1  notificationBuilder build               UPDATE for API 26 to set Max priority          NotificationManager notificationManager    NotificationManager  getSystemService Context NOTIFICATION SERVICE       String NOTIFICATION CHANNEL ID    my channel id 01        if  Build VERSION SDK INT  gt   Build VERSION CODES O            NotificationChannel notificationChannel   new NotificationChannel NOTIFICATION CHANNEL ID   My Notifications   NotificationManager IMPORTANCE MAX               Configure the notification channel          notificationChannel setDescription  Channel description            notificationChannel enableLights true           notificationChannel setLightColor Color RED           notificationChannel setVibrationPattern new long   0  1000  500  1000            notificationChannel enableVibration true           notificationManager createNotificationChannel notificationChannel               NotificationCompat Builder notificationBuilder   new NotificationCompat Builder this  NOTIFICATION CHANNEL ID        notificationBuilder setAutoCancel true               setDefaults Notification DEFAULT ALL               setWhen System currentTimeMillis                 setSmallIcon R drawable ic launcher               setTicker  Hearty365                  setPriority Notification PRIORITY MAX               setContentTitle  Default notification                setContentText  Lorem ipsum dolor sit amet  consectetur adipiscing elit                 setContentInfo  Info         notificationManager notify   notification id  1  notificationBuilder build

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Here is the sample code  which is working in Android Oreo and less than Oreo     NotificationManager notificationManager    NotificationManager  context getSystemService Context NOTIFICATION SERVICE               NotificationCompat Builder builder   null              if  android os Build VERSION SDK INT  gt   android os Build VERSION CODES O                    int importance   NotificationManager IMPORTANCE DEFAULT                  NotificationChannel notificationChannel   new NotificationChannel  ID    Name   importance                   notificationManager createNotificationChannel notificationChannel                   builder   new NotificationCompat Builder getApplicationContext    notificationChannel getId                   else                   builder   new NotificationCompat Builder getApplicationContext                                builder   builder                      setSmallIcon R drawable ic notification icon                       setColor ContextCompat getColor context  R color color                        setContentTitle context getString R string getTitel                        setTicker context getString R string text                        setContentText message                       setDefaults Notification DEFAULT ALL                       setAutoCancel true               notificationManager notify requestCode  builder build

[android] NotificationCompat.Builder deprecated in Android O

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