可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):
问题:
I am getting a toast saying "Developer warning for package com.google.android.apps.messaging" when sending an MMS using Android Messages ver 2.3.063.
In logs
08-12 16:57:52.368 7661 7682 W Notification: Use of stream types is deprecated for operations other than volume control 08-12 16:57:52.368 7661 7682 W Notification: See the documentation of setSound() for what to use instead with android.media.AudioAttributes to qualify your playback use case 08-12 16:57:52.369 1604 3146 E NotificationService: No Channel found for pkg=com.google.android.apps.messaging, channelId=miscellaneous, id=5, tag=null, opPkg=com.google.android.apps.messaging, callingUid=10130, userId=0, incomingUserId=0, notificationUid=10130, notification=Notification(channel=miscellaneous pri=0 contentView=null vibrate=null sound=null defaults=0x0 flags=0x8 color=0xff2a56c6 vis=PRIVATE) 08-12 16:57:52.375 1604 3094 D CompatibilityInfo: mCompatibilityFlags - 0 08-12 16:57:52.375 1604 3094 D CompatibilityInfo: applicationDensity - 480 08-12 16:57:52.375 1604 3094 D CompatibilityInfo: applicationScale - 1.0 08-12 16:57:52.378 7661 7682 I BugleNotifications: Notifying for tag = null, type = RESIZING_NOTIFICATION_ID, notification = Notification(channel=miscellaneous pri=0 contentView=null vibrate=null sound=null defaults=0x0 flags=0x8 color=0xff2a56c6 vis=PRIVATE) 08-12 16:57:52.381 7661 8893 W Notification: Use of stream types is deprecated for operations other than volume control 08-12 16:57:52.381 7661 8893 W Notification: See the documentation of setSound() for what to use instead with android.media.AudioAttributes to qualify your playback use case 08-12 16:57:52.384 1604 1618 E NotificationService: No Channel found for pkg=com.google.android.apps.messaging, channelId=miscellaneous, id=5, tag=null, opPkg=com.google.android.apps.messaging, callingUid=10130, userId=0, incomingUserId=0, notificationUid=10130, notification=Notification(channel=miscellaneous pri=0 contentView=null vibrate=null sound=null defaults=0x0 flags=0x8 color=0xff2a56c6 vis=PRIVATE) 08-12 16:57:52.384 880 1657 W StreamHAL: Error from HAL stream in function get_presentation_position: Operation not permitted 08-12 16:57:52.387 7661 8893 I BugleNotifications: Notifying for tag = null, type = RESIZING_NOTIFICATION_ID, notification = Notification(channel=miscellaneous pri=0 contentView=null vibrate=null sound=null defaults=0x0 flags=0x8 color=0xff2a56c6 vis=PRIVATE) 08-12 16:57:52.390 1604 1647 E NotificationService: No Channel found for pkg=com.google.android.apps.messaging, channelId=miscellaneous, id=5, tag=null, opPkg=com.google.android.apps.messaging, callingUid=10130, userId=0, incomingUserId=0, notificationUid=10130, notification=Notification(channel=miscellaneous pri=0 contentView=null vibrate=null sound=null defaults=0x0 flags=0x48 color=0xff2a56c6 vis=PRIVATE)
Google Play services ver 11.3.02
Android Messages 2.3.063
Android 8.0.0
Anyone up there to help me ? 
回答1:
As it is written in Android Documentation:
https://developer.android.com/preview/features/notification-channels.html
If you target Android O and post a notification without specifying a valid notifications channel, the notification fails to post and the system logs an error.
To solve this issue you need to create a NotificationChannel.
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); // The id of the channel. String id = "my_channel_01"; // The user-visible name of the channel. CharSequence name = getString(R.string.channel_name); // The user-visible description of the channel. String description = getString(R.string.channel_description); int importance = NotificationManager.IMPORTANCE_LOW; NotificationChannel mChannel = new NotificationChannel(id, name,importance); // Configure the notification channel. mChannel.setDescription(description); mChannel.enableLights(true); // Sets the notification light color for notifications posted to this // channel, if the device supports this feature. mChannel.setLightColor(Color.RED); mChannel.enableVibration(true); mChannel.setVibrationPattern(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400}); mNotificationManager.createNotificationChannel(mChannel);
And then assign it to your Notification like this:
mNotificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE); // Sets an ID for the notification, so it can be updated. int notifyID = 1; // The id of the channel. String CHANNEL_ID = "my_channel_01"; // Create a notification and set the notification channel. Notification notification = new Notification.Builder(MainActivity.this) .setContentTitle("New Message") .setContentText("You've received new messages.") .setSmallIcon(R.drawable.ic_notify_status) .setChannelId(CHANNEL_ID) .build(); // Issue the notification. mNotificationManager.notify(id, notification);
Update:
In case you want to use NotificationCompat here is a simple example:
NotificationCompat.Builder mBuilder; mBuilder = new NotificationCompat.Builder(getApplicationContext()) .setSmallIcon(R.mipmap.ic_launcher_icon) .setContentTitle("Title") .setContentText("Text") .setOngoing(true) .setChannelId(id);
In fact you have to use Notification Builder in order to set channel id via setChannelId();
回答2:
Another possible solution is to drop your targetSdkVersion to 25. Recent API levels have only brought sticks and no carrots. There are few reasons for developers to target newer apis.
回答3:
Messages on Toast and Logcat talk about you should be paid attention to 2 items and them order:
NotificationChannel mChannel = new NotificationChannel(id, name, importance);builder = new NotificationCompat.Builder(this, id);
Also NotificationManager notifManager and NotificationChannel mChannel are created only once.
There are required setters for Notification:
builder.setContentTitle() // required .setSmallIcon() // required .setContentText() // required
See the example in On Android 8.1 API 27 notification does not display.
