Question

在我的应用中，当使用以下代码接收到FCM时，我会显示一条通知：

    val intent = Intent(this, SplashActivity::class.java)
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)

    val pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
        PendingIntent.FLAG_ONE_SHOT)

    val channelId = "CHANNEL_ID"

    val defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)

    val notificationBuilder = NotificationCompat.Builder(this, channelId)
        .setSmallIcon(R.drawable.ic_stat_ic_notification) //THis is an XML Drawable
        .setContentTitle("Title")
        .setContentText("Some notification body.")
        .setAutoCancel(true)
        .setSound(defaultSoundUri)
        .setContentIntent(pendingIntent)

    val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

    // Since android Oreo notification channel is needed.
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        val channel = NotificationChannel(channelId,
            "Human Readable Channel Name",
            NotificationManager.IMPORTANCE_DEFAULT)
        notificationManager.createNotificationChannel(channel)
    }

    notificationManager.notify(0 /* ID of notification */, notificationBuilder.build())

我注意到一个小问题。当应用程序在前台运行或在后台运行时，setSmallIcon(R.drawable.ic_stat_ic_notification)会在通知的左上方显示可绘制对象。但是，当应用程序未运行时（我将其从正在运行的应用程序中删除），将显示通知，但图标仅显示为白色圆圈。有人可以帮助我解决这个问题-为什么会发生，如何解决？

应用未运行时未显示通知小图标

0 个答案: