Notifications do not show

Question

I have a really simple Service which triggers a notification. But it does not work. As you probably see, all of these are just copied from the net, but I want it to work, before I tweak it.

This is called from within the service:

NotificationManager mNotificationManager =
        (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

String id = "my_channel_01";
CharSequence name = "someName";
String description = "even bigger name";
int importance = NotificationManager.IMPORTANCE_HIGH;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
    NotificationChannel mChannel = new NotificationChannel(id, name, importance);
    mChannel.setDescription(description);
    mChannel.enableLights(true);
    mChannel.setLightColor(Color.RED);
    mChannel.enableVibration(true);
    mChannel.setVibrationPattern(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400});
    mNotificationManager.createNotificationChannel(mChannel);
}

NotificationCompat.Builder mBuilder =
        new NotificationCompat.Builder(getApplicationContext())
                .setSmallIcon(R.drawable.big_anchor)
                .setContentTitle("My notification")
                .setChannel(id)
                .setContentText("Hello World!");
Intent resultIntent = new Intent(getApplicationContext(), MainActivity.class);

PendingIntent resultPendingIntent =
        PendingIntent.getActivity(getApplicationContext(),
                0, resultIntent,
                PendingIntent.FLAG_UPDATE_CURRENT
        );
mBuilder.setContentIntent(resultPendingIntent);

mNotificationManager.notify(32345, mBuilder.build());

I've read, that some parameters should be placed in AndroidManifest.xml so also I am attaching this:

<application
    android:name=".App"
    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"
        android:label="@string/app_name"
        android:theme="@style/AppTheme.NoActionBar">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

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

    <service android:name=".GpsService" />
</application>

Also, the only logs I'm receiving are:

10-30 22:44:13.939 417-417/asdf.appW/Notification: Use of stream types is deprecated for operations other than volume control
10-30 22:44:13.940 417-417/asdf.app W/Notification: See the documentation of setSound() for what to use instead with android.media.AudioAttributes to qualify your playback use case

Any ideas?

UPDATE

I suppose this is something related to the API version I am using. When I used API 24 everything is working. But when using Emulator with 26, nothing appears.

Juan Cruz Soler · Accepted Answer · 2017-10-30T22:16:38.957

2

You have to provide the channel ID in the notification builder constructor:

new NotificationCompat.Builder(getApplicationContext(), id)

Reference

edited Oct 30 '17 at 22:16

answered Oct 30 '17 at 22:11

Juan Cruz Soler

8,172
5
41
44

In what version of AppCompact is it? I've got `com.android.support:appcompat-v7:26.0.0-alpha1` and the mentioned constructor does not exist. – Michał Nov 01 '17 at 09:35
1

Ok, got it. I've had to use a google maven repository. https://stackoverflow.com/questions/44500176/setting-up-gradle-for-api-26-android – Michał Nov 01 '17 at 10:05

score -1 · Answer 2 · answered Oct 30 '17 at 22:01

-1

I also faced similar issue, NotificationCompat.Builder was not working for me for API 26. Try using Notification.Builder for API 26 and NotificationCompat.Builder for versions lower than 26.

answered Oct 30 '17 at 22:01

user2622786

779
3
9
21

Notifications do not show

2 Answers2