Develop Reference

Whole Notification Background Color

I'm seeing some apps showing background color in whole notification.
Myntra Notification with BackgroundColor
First Cry Notification with BackgroundColor
I tried solutions from these links but nothing worked.
Changing Notification RemoteViews Background Color
https://cazimirroman.medium.com/android-how-to-set-the-background-color-for-a-notification-in-a-foreground-service-eaa505e2b82d
Tried using DecoratedMediaCustomViewStyle ->
val mediaSession = MediaSessionCompat(context,"tag")
mediaSession.setFlags(0)
mediaSession.setPlaybackState(PlaybackStateCompat.Builder()
.setState(PlaybackStateCompat.STATE_NONE,0,0f)
.build())
val builder = NotificationCompat.Builder(context, "channelId1")
.setSmallIcon(R.drawable.ic_notification_small)
.setContentTitle("The Title")
.setPriority(NotificationCompat.PRIORITY_MAX)
.setWhen(System.currentTimeMillis())
.setOngoing(true)
.setAutoCancel(true)
.setColor(ContextCompat.getColor(context, R.color.pink))
.setColorized(true)
.setStyle(androidx.media.app.NotificationCompat.DecoratedMediaCustomViewStyle().setMediaSession(mediaSession.sessionToken))
In this case notification is coming black always (suppose to be pink) and also doesn't show all the information.
Notification using MediaStyle

You should create two custom layouts for your notifications, one for a collapsed notification and one for an expanded notification, then in your activity:
RemoteView collapsedRV = new RemoteViews (getPackageName(), R.layout.collapsed_notification)
RemoteView expandedRV = new RemoteViews (getPackageName(), R.layout.expanded_notification)
then in your builder you need to set the content view like this:
.setCustomContentView(collapsedRV)
.setCutomBigContentView(expandedRV)
.build()
notificationManager.notify(1,builder)

Notification icon?

I create a notification via the standard code, the example below. Through the standard Image Asset I create an icon, I find it in the code.
When I start the notification, as an icon I see another icon, see the map.
Please tell me what I'm doing wrong?
Here's the process of creating an icon:
Create the Notification Icon
Go to File> New> Image Asset.
From the Icon Type dropdown, select Notification Icons.
Click on the icon next to the Clip Art item to select a material icon that you will use as the icon for your notification. In this example, you can use the Android icon.
public void onCreateNotif(View view) {
String chanal_Id = "default_chanal_id";
Intent resultIntent = new Intent(this, MainActivity.class);
PendingIntent resultPendingIntent = PendingIntent.getActivity(this, 0, resultIntent,
PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder builder =
new NotificationCompat.Builder(this, chanal_Id)
.setSmallIcon(R.drawable.ic_action1)
.setContentTitle("Title")
.setContentText("Notification text")
.setContentIntent(resultPendingIntent);
Notification notification = builder.build();
NotificationManager notificationManager =
(NotificationManager) getSystemService(NOTIFICATION_SERVICE);
notificationManager.notify(1, notification);
}
here is the file tree
here I see this icon in the notification

Updated Solution:
when you create Image Asset so It will create 3 Xmls files :
Background xml : it only contains on background color and shape
Foreground xml : it contains on foreground. only icon without
background color or shape
Integration of background and foreground xmls and it can be found in mipmap folder.
So To use the icon you have made in image asset change this line:
.setSmallIcon(R.drawable.ic_action1);
To:
.setSmallIcon(R.mipmap.ic_launcher);
or To this line if you wanted it rounded:
.setSmallIcon(R.mipmap.ic_launcher_round);

Expandable Lockscreen Notification?

On Android 6 I'm trying to display a notification with the following combination of properties:
text title and content
expandable image content (see here and here)
don't show a notification icon in the status bar (don't want to clutter it up)
don't flash any LEDs (don't want to trouble user)
show on lockscreen
show on lockscreen in expanded (or at least expandable) format (showing the bigContentView)
I can achieve 3 and 4 by setPriority(Notification.PRIORITY_MIN) but then the notification doesn't seem to show on the lock screen at all (fail on 5).
As for 6, when the notification does shown on the lockscreen e.g. using PRIORITY_MAX (passing on 5 but failing on 3 and 4), it is not expanded or even expandable (failing on 6).
I'm using the following to set up the notification:
Notification notification = new NotificationCompat.Builder(context)
.setContentTitle(titleText)
.setContentText(contentText)
.setSmallIcon(R.drawable.small_icon)
.setOngoing(true)
.setPriority(Notification.PRIORITY_DEFAULT)
.setVisibility(Notification.VISIBILITY_PUBLIC)
.build();
// add the image content (via a remoteViews)...
notification.bigContentView = remoteViews;
notificationManager.notify(tag, id, notification);

.setContentView(RemoteViews views)
RemoteViews
- A class that describes a view hierarchy that can be displayed in another process. The hierarchy is inflated from a layout resource file, and this class provides some basic operations for modifying the content of the inflated hierarchy.
Edit:
Call .build() later on.
Notification notification = new NotificationCompat.Builder(context)
.setContentTitle(titleText)
.setContentText(contentText)
.setSmallIcon(R.drawable.small_icon)
.setOngoing(true)
.setPriority(Notification.PRIORITY_DEFAULT)
.setVisibility(Notification.VISIBILITY_PUBLIC);
// add the image content (via a remoteViews)...
notification.bigContentView = remoteViews;
notificationManager.notify(tag, id, notification.build());

Set background color of wearable notification

I want to set the background color of a notification in a wearable device. The only method that I found is setBackground(Bitmap background) of NotificationCompat.WearableExtender but this is only for bitmaps. Is it a good idea to create a bitmap rectangle and use this as the background of my notification?
Any help would be appreciated.

Use NotificationCompat.Builder, in this one you can use setColor and add it to NotificationCompat.WearableExtender with the method .extend(). like this:
NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
builder.setSmallIcon(R.drawable.ic_launcher);
builder.setContentTitle("Title");
builder.setColor(COLOR HERE);
NotificationCompat.WearableExtender builderExtended = new NotificationCompat.WearableExtender();
builderExtended.extend(builder);
builder.build();

How to create Custom Notification in android

I need to create a custom notification instead of the default notification in android.
Current notification have a icon,heading and message like below image
I want it customise like this
how can i achieve this

Notification views
Normal View - A notification in normal view appears in an area that’s up to 64 dp tall. Even if you create a notification with a big view style, it will appear in normal view until it’s expanded.
Content title
Large icon
Content text
Content info
Small icon
Notification time
Normal View Like
Big View - A notification’s big view appears only when the notification is expanded, which happens when the notification is at the top of the notification drawer, or when the user expands the notification with a gesture. Expanded notifications were first introduced in Android 4.1 JellyBean [API 16]. Expandable notifications were designed to support rich notification style objects called Notification.Style.
Big View Like
Go to this link expandable-notifications-android
More information on official docs

I have create notification usingby following http://developer.android.com/wear/notifications/creating.html
Add code for create notification.
// Specify the 'big view' content to display the long
// event description that may not fit the normal content text.
BigTextStyle bigStyle = new NotificationCompat.BigTextStyle();
bigStyle.bigText(eventDescription);
NotificationCompat.Builder notificationBuilder =
new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_event)
.setLargeIcon(BitmapFractory.decodeResource(
getResources(), R.drawable.notif_background))
.setContentTitle(eventTitle)
.setContentText(eventLocation)
.setContentIntent(viewPendingIntent)
.addAction(R.drawable.ic_map,
getString(R.string.map), mapPendingIntent)
.setStyle(bigStyle);

That's called Expanded layouts which is available right from Jelly Bean version.
There are 2 views of Notifications:
Normal View
Big View
A notification’s big view appears only when the notification is expanded, which happens when the notification is at the top of the notification drawer, or when the user expands the notification with a gesture. Expanded notifications were first introduced in Android 4.1 JellyBean [API 16].
In your case, you just want to display big picture in notification, give Notification.BigPictureStyle a try:
Bitmap remote_picture = null;
// Create the style object with BigPictureStyle subclass.
NotificationCompat.BigPictureStyle notiStyle = new
NotificationCompat.BigPictureStyle();
notiStyle.setBigContentTitle("Big Picture Expanded");
notiStyle.setSummaryText("Nice big picture.");
try {
remote_picture = BitmapFactory.decodeStream(
(InputStream) new URL(sample_url).getContent());
} catch (IOException e) {
e.printStackTrace();
}
// Add the big picture to the style.
notiStyle.bigPicture(remote_picture);

you can use NotificationCompat that need remoteview . below i set my custom layout named
activity_downlaodactivity
NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
RemoteViews contentView = new RemoteViews(getPackageName(),R.layout.activity_downlaodactivity);
android.support.v4.app.NotificationCompat.Builder mBuilder =
new android.support.v4.app.NotificationCompat.Builder(this)
.setContent(contentView)
manager.notify(0, mBuilder.build());