android 通知面板中未显示自定义通知

Question

我正在尝试使用 Kotlin 语言在我的项目中实现自定义通知。但是，它不会显示在通知面板中，尽管它的默认面板正在点击按钮。假设我删除了 ContentTitle 和 ContentText 并设置了自定义内容，然后只有通知铃声没有显示。

函数：

@RequiresApi(Build.VERSION_CODES.O)
@SuppressLint("RemoteViewLayout")
private fun showNotification() {


    val intent = Intent(this, MainActivity::class.java)
    val pendingIntent = TaskStackBuilder.create(this).run {
        addNextIntentWithParentStack(intent)
        getPendingIntent(0, PendingIntent.FLAG_IMMUTABLE)
    }

    val notificationManager =
        this.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
    val channel = NotificationChannel(
        CHANNEL_ID,
        CHANNEL_NAME,
        NotificationManager.IMPORTANCE_HIGH
    )

    val contentView = RemoteViews(packageName, R.layout.notification_small)
    contentView.setTextViewText(R.id.tvHead, "Woohlah")
    contentView.setTextViewText(R.id.tvDes, "Working Very well")

    val builder = NotificationCompat.Builder(this, CHANNEL_ID)
        .setSmallIcon(R.drawable.ic_notify_status)
        .setContentTitle("Yahoo")
        .setContentText("Koi Mujhe Junglee Kahe")
        .setStyle(NotificationCompat.DecoratedCustomViewStyle())
        .setCustomContentView(contentView)
        .setCustomBigContentView(contentView)
        .setContentIntent(pendingIntent)
        .setAutoCancel(true)

    notificationManager.createNotificationChannel(channel)
    notificationManager.notify(NOTIFICATION_ID, builder.build())
}

XML代码：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">


<ImageView
    android:id="@+id/imageViewNotification"
    android:layout_width="50dp"
    android:layout_height="50dp"
    android:layout_centerVertical="true"
    android:contentDescription="@string/dot"
    android:padding="20dp"
    android:src="@drawable/ic_notify_status" />

<TextView
    android:id="@+id/tvHead"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginHorizontal="10dp"
    android:layout_toEndOf="@+id/imageViewNotification"
    android:paddingTop="10dp"
    android:textColor="@color/white"
    android:textSize="18sp"
    android:textStyle="bold"
    tools:text="xxx" />

<TextView
    android:id="@+id/tvDes"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/tvHead"
    android:layout_marginHorizontal="10dp"
    android:layout_toEndOf="@+id/imageViewNotification"
    android:paddingTop="10dp"
    android:paddingBottom="10dp"
    android:textColor="@color/white"
    android:textSize="14sp"
    tools:text="xxx" />

<androidx.appcompat.widget.AppCompatTextView
    android:id="@+id/tvCount"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_alignParentEnd="true"
    android:padding="10dp"
    android:textColor="@color/black"
    android:textSize="14sp"
    tools:text="0" />
</RelativeLayout>

Answer 1

根据文档，RemoteView 并非支持所有布局和小部件。您的 AppCompatTextView 导致了问题。将其替换为简单的 TextView.

此外，

Beware that the background color for the notification can vary across different devices and versions. So you should always apply support library styles such as TextAppearance_Compat_Notification for the text and TextAppearance_Compat_Notification_Title for the title in your custom layout. These styles adapt to the color variations so you don't end up with black-on-black or white-on-white text.

文档：

android 通知面板中未显示自定义通知

Custom notification is not showing in the android notification panel

android

android-notifications

android-notification-bar

kotlin

custom-notification