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Create an Expandable Notification Containing Some Text in Android

To create an expandable notification with text in Android, you can use the BigTextStyle notification. This style is suitable for displaying multiline content in the expanded view.

Here's how you can create a text-based expandable notification:

1. Create the Notification:

fun showBigTextNotification(context: Context) {
    val notificationId = 1
    val notificationChannelId = "channel_id"

    val notificationBuilder = NotificationCompat.Builder(context, notificationChannelId)
        .setSmallIcon(R.drawable.ic_notification)  // Replace with your own icon
        .setContentTitle("My Notification Title")
        .setContentText("Short message or summary")
        .setStyle(
            NotificationCompat.BigTextStyle()
                .bigText("This is the expanded content of the notification. You can add a lot more text here, making it suitable for longer messages or detailed information.")
                .setBigContentTitle("Expanded Notification Title")
                .setSummaryText("Optional summary text")
        )
        .setPriority(NotificationCompat.PRIORITY_HIGH)

    // For Android O and above, you need to add a Notification Channel
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        val notificationChannel = NotificationChannel(
            notificationChannelId,
            "My Notification Channel Name",
            NotificationManager.IMPORTANCE_HIGH
        ).apply {
            description = "My Notification Channel Description"
        }

        val notificationManager: NotificationManager =
            context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
        notificationManager.createNotificationChannel(notificationChannel)
    }

    NotificationManagerCompat.from(context).notify(notificationId, notificationBuilder.build())
}

2. Display the Notification:

To display the notification, simply call the function:

showBigTextNotification(context)

This function will display an expandable notification with a brief summary, and when expanded, it will display the longer text message.

Note:

Remember to initialize the NotificationChannel only once, i.e., the first time you display a notification. Subsequent calls to create the same notification channel will have no effect, so it's safe to call this as many times as needed.

  1. Creating custom notifications with text in Android:

    • Description: Custom notifications with text in Android allow you to display personalized messages, titles, and content in your notifications. You can customize various aspects of the notification to suit your app's design.
    • Code (Kotlin):
      // Example of creating a custom notification with text
val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

val notificationBuilder = NotificationCompat.Builder(this, CHANNEL_ID)
    .setSmallIcon(R.drawable.notification_icon)
    .setContentTitle("Custom Notification")
    .setContentText("This is a custom notification with text content")
    .setPriority(NotificationCompat.PRIORITY_DEFAULT)

notificationManager.notify(notificationId, notificationBuilder.build())

  2. Expandable notification with text in Android Kotlin:

    • Description: Expandable notifications with text allow you to provide more detailed information to users by allowing the notification to expand. This is particularly useful for longer messages or additional content.
    • Code (Kotlin):
      // Example of creating an expandable notification with text
val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

val notificationBuilder = NotificationCompat.Builder(this, CHANNEL_ID)
    .setSmallIcon(R.drawable.notification_icon)
    .setContentTitle("Expandable Notification")
    .setContentText("This is an expandable notification with text content")
    .setStyle(NotificationCompat.BigTextStyle().bigText("Additional detailed text content"))
    .setPriority(NotificationCompat.PRIORITY_DEFAULT)
    .setAutoCancel(true)

notificationManager.notify(notificationId, notificationBuilder.build())

  3. BigTextStyle notification example in Android:

    • Description: BigTextStyle is a notification style that allows you to display longer text content in the expanded view of the notification. It's useful when you have more information to convey.
    • Code (Kotlin):
      // Example of using BigTextStyle in a notification
val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

val notificationBuilder = NotificationCompat.Builder(this, CHANNEL_ID)
    .setSmallIcon(R.drawable.notification_icon)
    .setContentTitle("Big Text Style Notification")
    .setContentText("This is a notification with big text style")
    .setStyle(NotificationCompat.BigTextStyle()
        .bigText("This is additional text content that can be longer and more detailed."))
    .setPriority(NotificationCompat.PRIORITY_DEFAULT)
    .setAutoCancel(true)

notificationManager.notify(notificationId, notificationBuilder.build())

  4. Customizing notifications with text in Android:

    • Description: Customizing notifications with text involves setting the title, content text, and potentially using styles like BigTextStyle for longer messages. You can also customize the appearance, priority, and other attributes.
    • Code (Kotlin):
      // Example of customizing a notification with text
val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

val notificationBuilder = NotificationCompat.Builder(this, CHANNEL_ID)
    .setSmallIcon(R.drawable.notification_icon)
    .setContentTitle("Customized Notification")
    .setContentText("This notification is customized with specific text content")
    .setStyle(NotificationCompat.BigTextStyle()
        .bigText("This is additional text content that can be longer and more detailed."))
    .setPriority(NotificationCompat.PRIORITY_HIGH)
    .setAutoCancel(true)

notificationManager.notify(notificationId, notificationBuilder.build())

  5. Expanding notifications with text content in Android:

    • Description: Notifications can be expanded to reveal additional text content. This is particularly useful when you want to display longer messages or provide users with more information without cluttering the notification.
    • Code (Kotlin):
      // Example of expanding notifications with text content
val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

val notificationBuilder = NotificationCompat.Builder(this, CHANNEL_ID)
    .setSmallIcon(R.drawable.notification_icon)
    .setContentTitle("Expandable Notification with Text")
    .setContentText("This notification expands to show additional text content")
    .setStyle(NotificationCompat.BigTextStyle()
        .bigText("Additional detailed text content that is revealed when the notification is expanded."))
    .setPriority(NotificationCompat.PRIORITY_DEFAULT)
    .setAutoCancel(true)

notificationManager.notify(notificationId, notificationBuilder.build())

  6. NotificationCompat.BigTextStyle in Android:

    • Description: NotificationCompat.BigTextStyle is a style class that allows you to create notifications with longer text content. It ensures that the text is displayed properly, especially when the notification is expanded.
    • Code (Kotlin):
      // Example of using NotificationCompat.BigTextStyle
val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

val notificationBuilder = NotificationCompat.Builder(this, CHANNEL_ID)
    .setSmallIcon(R.drawable.notification_icon)
    .setContentTitle("Big Text Style Notification")
    .setContentText("This notification uses BigTextStyle")
    .setStyle(NotificationCompat.BigTextStyle()
        .bigText("This is additional text content that can be longer and more detailed."))
    .setPriority(NotificationCompat.PRIORITY_DEFAULT)
    .setAutoCancel(true)

notificationManager.notify(notificationId, notificationBuilder.build())

  7. Adding messages to notifications in Android:

    • Description: Adding messages to notifications involves specifying the title and content text. You can further enhance the notification by using styles like BigTextStyle for more extensive messages.
    • Code (Kotlin):
      // Example of adding messages to notifications
val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

val notificationBuilder = NotificationCompat.Builder(this, CHANNEL_ID)
    .setSmallIcon(R.drawable.notification_icon)
    .setContentTitle("Notification with Message")
    .setContentText("This is a notification message")
    .setStyle(NotificationCompat.BigTextStyle()
        .bigText("This is a longer message that provides additional details and information."))
    .setPriority(NotificationCompat.PRIORITY_DEFAULT)
    .setAutoCancel(true)

notificationManager.notify(notificationId, notificationBuilder.build())
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