notification in android studio kotlin
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Notification in android studio kotlin Â
 private val notificationManager: NotificationManager by lazy { getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager }   private val notificationIntent by lazy {     PendingIntent.getService(this, 0, Intent(this, CallServices::class.java).apply { action = ACTION_MAIN }, 0)   }   private val closeIntent by lazy {     PendingIntent.getService(this, 0, Intent(this, CallServices::class.java).apply {       action = NOTIFICATION_ACTION_CALL_CLOSE     }, 0)   }   private val declineIntent by lazy {     PendingIntent.getService(this, 0, Intent(this, CallServices::class.java).apply {       action = NOTIFICATION_ACTION_CALL_DECLINE     }, 0)   }   private val acceptIntent by lazy {     PendingIntent.getService(this, 0, Intent(this, CallServices::class.java).apply {       action = NOTIFICATION_ACTION_CALL_ACCEPT     }, 0)   } internal fun showNotification(type: NotificationType) {     LogUtils.e(CommonTAG, "CN->CallServices FN--> showNotification() type--> $type")     val notification: Notification = when (type) {       NotificationType.STARTUP -> {         getStartupNotification(this, callType, usageType, this.notificationIntent, acceptIntent, declineIntent, this.closeIntent)!!       }       NotificationType.ONGOING -> {         val builder = CallsNotificationUtils.getBaseBuilder(this, notificationIntent, callType, usageType)         with(builder) {           this.addAction(NotificationCompat.Action.Builder(0, getString(R.string.action_calls_hangup), closeIntent).build())         }         builder.setOngoing(true).build()       }       NotificationType.MISSED_CALL -> {         val appIntent = Intent(this, if ((this.applicationContext as MyApp).foregroundManager.isForeground) CallActivity::class.java else SplashActivity::class.java)         appIntent.action = Intent.ACTION_MAIN         val appPending = PendingIntent.getService(this, 0, appIntent, 0)         val builder = CallsNotificationUtils.getBaseBuilder(this, appPending, callType, usageType, autoCancel = true, ongoing = false, body = getString(R.string.calls_missed_from, showedName))         builder.setAutoCancel(true).build()       }       NotificationType.ACCEPT_CALL -> {         //speaker pending Intent         val speakerIntent = Intent(this, CallServices::class.java)         speakerIntent.action = NOTIFICATION_ACTION_CALL_SPEAKER         val speakerPending = PendingIntent.getService(this, 0, speakerIntent, 0)         //mute pending Intent         val muteIntent = Intent(this, CallServices::class.java)         muteIntent.action = NOTIFICATION_ACTION_CALL_MUTE         val mutePending = PendingIntent.getService(this, 0, muteIntent, 0)         val builder = CallsNotificationUtils.getBaseBuilder(this, notificationIntent, callType, usageType)         with(builder) {           // adds usual "Hang up" action           this.addAction(NotificationCompat.Action.Builder(0, getString(R.string.action_calls_hangup), closeIntent).build())           // adds "Toggle speaker" action           if (!isSpeaker) this.addAction(NotificationCompat.Action.Builder(0, getString(R.string.action_calls_speaker), speakerPending).build())           else this.addAction(NotificationCompat.Action.Builder(0, getString(R.string.action_calls_earpiece), speakerPending).build())           // adds "Toggle mute" action           if (!isMute) this.addAction(NotificationCompat.Action.Builder(0, getString(R.string.action_calls_mute), mutePending).build())           else this.addAction(NotificationCompat.Action.Builder(0, getString(R.string.action_calls_un_mute), mutePending).build())         }         callStatus = VoiceVideoStatus.ACCEPT         builder.build()       }     }     notificationManager.notify(SERVICE_NOTIFICATION_ID, notification)   } fun getBaseBuilder(context: Context, primaryPendingIntent: PendingIntent, callType: VoiceVideoCallType, usageType: VoiceVideoUsageType, ongoing: Boolean = true, autoCancel: Boolean = false, title: String? = null, body: String? = null): NotificationCompat.Builder {     val channelID = context.getString(R.string.notification_channel_id_calls)     if (hasOreo()) {       val callInviteChannel = NotificationChannel(channelID, context.getString(R.string.notif_channel_calls_description), NotificationManager.IMPORTANCE_HIGH)       callInviteChannel.description = context.getString(R.string.notif_channel_calls_description)       callInviteChannel.lockscreenVisibility = Notification.VISIBILITY_PRIVATE       callInviteChannel.enableVibration(false)       callInviteChannel.enableLights(true)       callInviteChannel.lightColor = Color.RED       (context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager).createNotificationChannel(callInviteChannel)     }     return NotificationCompat.Builder(context, channelID).setSmallIcon(R.drawable.ic_notification_tray).setContentTitle(if (!title.isNullOrBlank()) title     else {       context.getString(R.string.call_notif_title, context.getString(R.string.app_name))     }).setContentText(if (!body.isNullOrBlank()) body     else {       context.getString(if (usageType == VoiceVideoUsageType.OUTGOING) {         if (callType == VoiceVideoCallType.VOICE) R.string.call_notif_body_out_vc         else R.string.call_notif_body_out_vd       } else {         if (callType == VoiceVideoCallType.VOICE) R.string.call_notif_body_inc_vc         else R.string.call_notif_body_inc_vd       })     }).setPriority(NotificationCompat.PRIORITY_MAX).setAutoCancel(autoCancel).setOngoing(ongoing).setTicker(context.getString(R.string.call_notif_title, context.getString(R.string.app_name))).setContentIntent(primaryPendingIntent).setOnlyAlertOnce(true).setCategory(NotificationCompat.CATEGORY_CALL).setColor(ContextCompat.getColor(context, R.color.colorAccent))   }
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