How To Make It Work Notificationcompat.builder Notificationbuilder = New Notificationcompat.builder(this, Notification_channel_id);

NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID); was showing the error: Builder (Context) in Builder cannot be appl

Solution 1:

Try to use this, I think your problem is here: details.useVersion '25.3.0'

     configurations.all {
        resolutionStrategy.eachDependency { DependencyResolveDetails details ->
        def requested = details.requested
        if (requested.group == 'com.android.support') {
            if (!requested.name.startsWith("multidex")) {
                details.useVersion '27.1.0'
            }
        }
    }

}

Solution 2:

The problem is that you're using import android.support.v7.app.NotificationCompat. The v7.app.NotificationCompat was actually removed in revision 27.0.0 and was never updated to support Notification Channels.

You should remove that line and instead import android.support.v4.app.NotificationCompat, which does support Notification Channels.

Solution 3:

its work in all api Try this :

publicvoidsendNotification(String messageBody) {
    NotificationManagernotificationManager= (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    NotificationCompat.Builderbuilder=newNotificationCompat.Builder(this)
                    .setSmallIcon(R.drawable.ic_enable_notification_icon)
                    .setColor(Color.parseColor("#5878f2"))
                    .setContentTitle(getString(R.string.app_name))
                    .setContentText(messageBody)               
                    .setAutoCancel(true);

    IntentnotificationIntent=newIntent(this, MainActivity.class);
    notificationIntent.putExtra("message",messageBody);
    PendingIntentcontentIntent= PendingIntent.getActivity(this, 0, notificationIntent,
            PendingIntent.FLAG_UPDATE_CURRENT);
    builder.setContentIntent(contentIntent);

    if(Build.VERSION_CODES.O <= Build.VERSION.SDK_INT) {
        builder.setChannelId(createNotificationChannel());
    }

    Notificationnotification= builder.build();
    notificationManager.notify(211, notification);
}

 @RequiresApi(api = Build.VERSION_CODES.O)private String createNotificationChannel(){
    StringchannelId="demo";
    StringchannelName="My demo";
    NotificationChannelmChannel=newNotificationChannel(channelId,channelName, NotificationManager.IMPORTANCE_NONE);
    mChannel.setImportance(NotificationManager.IMPORTANCE_HIGH);

    NotificationManagermNotificationManager=
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    if (mNotificationManager != null) {
        mNotificationManager.createNotificationChannel(mChannel);
    }
    return channelId;
}

Solution 4:

Android version O and above need notification channel. here is one working example for you.getRequestCode method is for different notification so that they will not replace. you can use any number also. If you use same number notification will replace automatically, so I use a random number generator.

privatestaticintgetRequestCode() {
    Randomrnd=newRandom();
    return100 + rnd.nextInt(900000);
}


  PendingIntentpendingIntent= PendingIntent.getActivity(this, getRequestCode()  /* Request code */, intent,
            PendingIntent.FLAG_ONE_SHOT);

    UridefaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.BuildernotificationBuilder=newNotificationCompat.Builder(this)
            .setSmallIcon(R.mipmap.ic_launcher)
            .setLargeIcon(BitmapFactory.decodeResource(this.getResources(),
                    R.mipmap.ic_launcher))
            .setContentTitle(neplaiTile) // use your own title
            .setContentText(message)    // use your own message
            .setAutoCancel(true)
            .setSound(defaultSoundUri)
            .setContentIntent(pendingIntent)
            .setPriority(Notification.PRIORITY_MAX)
            .setBadgeIconType(Notification.BADGE_ICON_SMALL);


    NotificationManagernotificationManager=
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
        intimportance= NotificationManager.IMPORTANCE_HIGH;
        NotificationChannelnotificationChannel=newNotificationChannel(NOTIFICATION_CHANNEL_ID, "NOTIFICATION_CHANNEL_NAME", importance);
        notificationChannel.enableLights(true);
        notificationChannel.setLightColor(Color.RED);
        notificationChannel.enableVibration(true);
        notificationChannel.setVibrationPattern(newlong[]{100, 200, 300, 400, 500, 400, 300, 200, 400});
        assert notificationManager != null;
        notificationBuilder.setChannelId(NOTIFICATION_CHANNEL_ID);
        notificationManager.createNotificationChannel(notificationChannel);
    }
    assert notificationManager != null;
    notificationManager.notify(getRequestCode() /* Request Code */, notificationBuilder.build());