首先，我不知道您的通知不适用于 Oreo、Pie 或低于 N 的设备。
For your question StackOver Flow have lots of answer.
现在根据您的问题，您只缺少一行代码但由于您尚未粘贴，因此无法检查您的整个通知代码。
我在这里粘贴一个通知代码，它只是满足您的所有通知要求。 （完全自定义通知）
图片通知
public void createNotificationWithImage(String title,String message ,Bitmap image) {
PendingIntent resultPendingIntent = PendingIntent.getActivity(mContext,
0 /* Request code */, resultIntent,
PendingIntent.FLAG_UPDATE_CURRENT);
// Custom Sound Uri
Uri soundUri = Uri.parse("android.resource://" + mContext.getApplicationContext()
.getPackageName() + "/" + R.raw.sniper_gun);
mBuilder = new NotificationCompat.Builder(mContext);
mBuilder.setSmallIcon(R.mipmap.notification_icon);
// Pay attention on below line here (NOTE)
mBuilder.setSound(soundUri);
if (image!=null) {
mBuilder.setContentTitle(title)
.setContentText(message)
.setAutoCancel(false)
.setLargeIcon(image)
.setStyle(new NotificationCompat.BigPictureStyle()
.bigPicture(image).setSummaryText(message).bigLargeIcon(null))
.setColor(Color.GREEN)
.setContentIntent(resultPendingIntent);
}
mNotificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
现在我正在粘贴可以在 OREO 设备上方或上运行的通知代码。
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
int importance = NotificationManager.IMPORTANCE_HIGH;
NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, "NOTIFICATION_CHANNEL_NAME", importance);
notificationChannel.enableLights(true);
notificationChannel.setLightColor(Color.RED);
notificationChannel.enableVibration(true);
notificationChannel.setVibrationPattern(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400});
if(soundUri != null){
AudioAttributes audioAttributes = new AudioAttributes.Builder()
.setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
.setUsage(AudioAttributes.USAGE_ALARM)
.build();
notificationChannel.setSound(soundUri,audioAttributes);
}
assert mNotificationManager != null;
mBuilder.setChannelId(NOTIFICATION_CHANNEL_ID);
mNotificationManager.createNotificationChannel(notificationChannel);
}
assert mNotificationManager != null;
mNotificationManager.notify(0 /* Request Code */, mBuilder.build());
below middle braces use for close your method.
}
无图片通知
public void createNotification(String title,String message){
PendingIntent resultPendingIntent = PendingIntent.getActivity(mContext,
0 /* Request code */, resultIntent,
PendingIntent.FLAG_UPDATE_CURRENT);
Uri soundUri = Uri.parse("android.resource://" + mContext.getApplicationContext()
.getPackageName() + "/" + R.raw.sniper_gun);
mBuilder = new NotificationCompat.Builder(mContext);
mBuilder.setSmallIcon(R.mipmap.notification_icon);
mBuilder.setLargeIcon(BitmapFactory.decodeResource(mContext.getResources(),
R.mipmap.icon));
mBuilder.setSound(soundUri);
mBuilder.setContentTitle(title)
.setContentText(message)
.setAutoCancel(false)
.setColor(Color.GREEN)
.setStyle(new NotificationCompat.BigTextStyle())
.setContentIntent(resultPendingIntent);
mNotificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
int importance = NotificationManager.IMPORTANCE_HIGH;
NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, "NOTIFICATION_CHANNEL_NAME", importance);
notificationChannel.enableLights(true);
notificationChannel.setLightColor(Color.RED);
notificationChannel.enableVibration(true);
notificationChannel.setVibrationPattern(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400});
// notificationChannel.s
if(soundUri != null){
AudioAttributes audioAttributes = new AudioAttributes.Builder()
.setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
.setUsage(AudioAttributes.USAGE_ALARM)
.build();
notificationChannel.setSound(soundUri,audioAttributes);
}
assert mNotificationManager != null;
mBuilder.setChannelId(NOTIFICATION_CHANNEL_ID);
mNotificationManager.createNotificationChannel(notificationChannel);
}
assert mNotificationManager != null;
mNotificationManager.notify(0 /* Request Code */, mBuilder.build());
}
注意：在我的代码中，我提到要注意一个特定的行，我描述了将设置声音 Uri 与通知。可以这样形容。
mBuilder.setContentTitle(title)
.setContentText(message)
.setAutoCancel(false)
.setSound(soundUri)
.setColor(Color.GREEN)
.setStyle(new NotificationCompat.BigTextStyle())
.setContentIntent(resultPendingIntent);
但它不会为您播放声音，因为在奥利奥设备未将声音设置为优先级之后。
所以总是像我描述的那样用于声音使用代码。