Custom Notification is not displaying in Android

Question

Hello I am display custom notification in my android application. But issue is that custom notification is not displaying. I saw many threads but did not find any answer related to my issue.

I could not find where is the issue. Can you please look at this.

PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);

// display the notification
NotificationManager mNotificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);

RemoteViews contentView = new RemoteViews(getPackageName(), R.layout.custom_notification);
contentView.setImageViewResource(R.id.notificationIcon, Util.notificationBitmap);
contentView.setTextViewText(R.id.notificationTitle, Util.notificationTitle);
contentView.setTextViewText(R.id.notificationContent, notificationMessage);

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context)
                    .setSmallIcon(R.drawable.ic_stat_logo)
                    .setContentTitle(Util.notificationTitle)
                    .setStyle(new NotificationCompat.BigTextStyle()
                    .bigText(notificationMessage))
                    .setAutoCancel(true)
                    .setDefaults(Notification.DEFAULT_SOUND)
                    .setContentText(notificationMessage);

mBuilder.setContent(contentView);
// build notification
mBuilder.setContentIntent(pendingIntent);
mNotificationManager.notify((int)SystemClock.currentThreadTimeMillis(), mBuilder.build());

custom_notification.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <ImageView
        android:id="@+id/notificationIcon"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        />

    <TextView
        android:id="@+id/notificationTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toRightOf="@id/notificationIcon"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <TextView
        android:id="@+id/notificationContent"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/notificationTitle"
        android:layout_toRightOf="@id/notificationIcon"
        android:textAppearance="?android:attr/textAppearanceSmall" />

</RelativeLayout>

Thanks in advance.

Answer 1

@TGMCians thanks :)

https://chat.stackoverflow.com/transcript/15?m=16698842#16698842

Probably using Support Library, remote views concept does not work in Android 2.X if you are looking for custom notification.

This worked for me and solved my issue.

// display the notification
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
NotificationManager mNotificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context);

// Android 2.x does not support remote view + custom notification concept using 
// support library
if(Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
    mBuilder.setSmallIcon(R.drawable.ic_stat_logo);
    mBuilder.setContentTitle(Util.notificationTitle)
            .setStyle(
                    new NotificationCompat.BigTextStyle()
                            .bigText(notificationMessage))
            .setAutoCancel(true).setDefaults(Notification.DEFAULT_SOUND)
            .setLights(Color.WHITE, 500, 500)
            .setContentText(notificationMessage);
} else {
    RemoteViews customNotificationView = new RemoteViews(getPackageName(),
            R.layout.custom_notification);

    customNotificationView.setImageViewBitmap(R.id.notificationIcon, Util.notificationBitmap);
    customNotificationView.setTextViewText(R.id.notificationTitle, Util.notificationTitle);
    customNotificationView.setTextViewText(R.id.notificationContent, notificationMessage);

    mBuilder.setContent(customNotificationView);
    mBuilder.setSmallIcon(R.drawable.ic_launcher);
    mBuilder.setAutoCancel(true);
    mBuilder.setDefaults(Notification.DEFAULT_SOUND);
    mBuilder.setLights(Color.WHITE, 500, 500);
}
// build notification
mBuilder.setContentIntent(pendingIntent);
mNotificationManager.notify(1000, mBuilder.build());

Answer 2

A status bar notification requires all of the following:

An icon for the status bar
A title and message, unless you define a custom notification layout
A PendingIntent, to be fired when the notification is selected
from Status Bar Notifications - Creating Notifications 

You don't specify an icon, which means your notification is not valid.

Answer 3

Just make sure your custom notification is simple design and contains one parent layout- RelativeLayout/LinearLayout

Example layout:

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <ImageView
        android:id="@+id/notificationIcon"
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:layout_centerVertical="true"
        />

    <TextView
        android:id="@+id/notificationTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="@dimen/padding_10dp"
        android:layout_marginTop="@dimen/margin_8dp"
        android:layout_marginEnd="@dimen/margin_8dp"
        android:textSize="13sp"
        android:layout_toEndOf="@+id/notificationIcon"
        android:layout_toRightOf="@id/notificationIcon"
        android:maxLines="1"
        android:text="jhyfjhuf"
        android:textStyle="bold" />

    <TextView
        android:id="@+id/notificationContent"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/notificationTitle"
        android:layout_marginStart="@dimen/padding_10dp"
        android:layout_marginTop="@dimen/margin_4dp"
        android:layout_marginBottom="@dimen/margin_8dp"
        android:layout_marginEnd="@dimen/margin_8dp"
        android:layout_toRightOf="@id/notificationIcon"
        android:textSize="11sp"
        android:maxLines="1"
        android:text="Notification Description" />

</RelativeLayout>

And set this view in notification builder:

builder.setCustomContentView(customContentView)

Answer 4

Change your layout to use LinearLayout. Had the same problem and that is a nice work around.

Answer 5

In my case it was also the case that the notification did not appear. However, it was strange that if I did not use customView, it appeared without any problem. As soon as I loaded custom view, I immediately found that the notification did not appear. I also suspected that LinearLayout or RelativeLayout was causing the problem, but in the end it wasn't.

In my case the problem was caused by padding on the root element.

I finally removed all formatting and settings from the root element, only the width and height remained, and it works!

If this is intentional, it should be in the documentation. If it was just an accidental behaviour, it was a sad, time consuming thing to do.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

...your content here...

</RelativeLayout>