CODEWITHSUNDEEP
javaandroidkotlinpush-notificationandroid-notifications
Kyryl Zotov
Kyryl Zotov

Reputation: 1968

Is check that notification channel is already created needed?

Do we need to check before creating notification channel that it isn't already created?

 private fun createChannel() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        // todo: add here check if channel is already created
        val defaultChannel = NotificationChannel(MEDIA_UPLOAD_NOTIFICATION_CHANNEL_ID, MEDIA_UPLOAD_NOTIFICATION_CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH)
        defaultChannel.description = MEDIA_UPLOAD_NOTIFICATION_CHANNEL_DESC
        defaultChannel.enableVibration(true)
        notificationManager.createNotificationChannel(defaultChannel)
    }
}

Upvotes: 10

Views: 5283

Answers (3)

ShaRy
ShaRy

Reputation: 87

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            val notificationManager = getSystemService(NotificationManager::class.java) as NotificationManager
            if(notificationManager.getNotificationChannel("CHANNEL_ID") == null) {
                val serviceChannel = NotificationChannel("CHANNEL_ID", "CHANNEL_NAME", NotificationManager.IMPORTANCE_DEFAULT)
                notificationManager.createNotificationChannel(serviceChannel)
            }
        }

As other mentioned above there's no need to check for existence unless you are doing something particular.

Upvotes: 2

Rajnish suryavanshi
Rajnish suryavanshi

Reputation: 3414

As suggested in the documentation.

If creating a NotificationChannel with the same original values there won't be any operation. So, it's safe to call the code.

Please checkout documentation for more details - https://developer.android.com/training/notify-user/channels#CreateChannel

Upvotes: 4

Rohit5k2
Rohit5k2

Reputation: 18112

No, you don't really have to check that. If a channel with the same ID exists then Android doesn't create another.

As per docs

Creating an existing notification channel with its original values performs no operation, so it's safe to call this code when starting an app.

More info at https://developer.android.com/training/notify-user/channels#CreateChannel

Upvotes: 13

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