android - MessagingStyle 不显示文本

Question

Android 开发的新手，我正在尝试最新的 addHistoricMessage，但我遗漏了一些东西，因为它没有显示任何东西。在极少数情况下，会显示 addMessage 文本，但永远不会显示 addHistoricMessage。 addMessage 在使用 NotificationCompat 时始终如一地工作，但 NotificationCompat 似乎没有 addHistoricMessage。

任何想法表示赞赏 - 使用 androidx.appcompat:appcompat:1.0.2 和 compileSdkVersion 和 targetSdkVersion 都是 28。

我看到的一个例子是:

调用通知的测试按钮:

fun test(view: View) {
    val job = GlobalScope.launch {
        val repository = DataRepository.getInstance(Db.getDb(this@MainActivity))

        AlarmReceiver().notifyTest(
                this@MainActivity,
                repository.upcomingDetail(9),
                arrayListOf("Hi!", "Miss you!", "Hello!")
        )
    }
}

通知方法及相关(删除不太重要的代码):

fun notifyTest(context: Context, upcoming: UpcomingDetail, top3Sent: List<String>?) {
    //...

    @TargetApi(Build.VERSION_CODES.P)
    when (Build.VERSION.SDK_INT) {
        in 1..27 -> {
            with(NotificationManagerCompat.from(context)) {
                notify(upcoming.id.toInt(), legacyNotificationBuilder(
                        context,
                        upcoming,
                        noteIntent,
                        contentPending,
                        disablePending,
                        deletePending,
                        postponePending,
                        top3Sent
                ).build())
            }
        }
        else -> context.getSystemService(NotificationManager::class.java)
                .notify(upcoming.id.toInt(), notificationBuilder(
                        context,
                        upcoming,
                        noteIntent,
                        contentPending,
                        disablePending,
                        deletePending,
                        postponePending,
                        top3Sent
                ).build())
    }
}

@RequiresApi(Build.VERSION_CODES.P)
private fun notificationBuilder(
        context: Context,
        upcoming: UpcomingDetail,
        noteIntent: Intent,
        contentPending: PendingIntent,
        deletePending: PendingIntent,
        disablePending: PendingIntent,
        postponePending: PendingIntent,
        top3Sent: List<String>?
): Notification.Builder {
    val recipient: android.app.Person = android.app.Person.Builder().setName("Darren").setImportant(true).build()
    val you: android.app.Person? = null

    val messageStyle = Notification.MessagingStyle(recipient)
    val message1 = Notification.MessagingStyle.Message("Hello!", Instant.now().minusSeconds(10 * 60).toEpochMilli(), recipient)
    messageStyle.addHistoricMessage(message1)
    messageStyle.addMessage(Notification.MessagingStyle.Message("Hi", Instant.now().toEpochMilli(), recipient))

    val remoteInput: android.app.RemoteInput = android.app.RemoteInput.Builder(upcoming.id.toString()).run {
        top3Sent?.let { setChoices(top3Sent.toTypedArray()) }
        build()
    }

    //...

    val inputAction = Notification.Action.Builder(0, context.getString(R.string.button_edit), inputPending).run {
        addRemoteInput(remoteInput)
        build()
    }

    return Notification.Builder(context, "Input").apply {
        setSmallIcon(R.drawable.ic_stat)
        style = messageStyle
        setAutoCancel(true)
        setCategory(Notification.CATEGORY_REMINDER)
        setColor(ContextCompat.getColor(context, R.color.secondaryDarkColor))
        setContentIntent(contentPending)
        setDeleteIntent(deletePending)
        setGroup("notifications")
        setOnlyAlertOnce(true)
        setVisibility(Notification.VISIBILITY_PRIVATE)
        addAction(inputAction)
    }
}

Answer 1

This is the behavior of historic message

历史消息通常不会在通知中显示。这是一条特殊消息，仅在用户通过 RemoteInput 回复时显示。请参阅上图以查看行为。仅当消息不是通知的主要主题但可以为对话提供上下文时才应使用它。

引用:Android MessagingStyle Notification As Clear As Possible