Android O中的NotificationChannel问题

Question

我正在致敬＆＃34;开发人员警告包com.google.android.apps.messaging＆＃34;使用Android消息版本2.3.063发送彩信时。

在日志中

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服务版本11.3.02
Android消息2.3.063
Android 8.0.0
的

有人在那里帮助我吗？

Answer 1

正如在Android文档中编写的那样：

https://developer.android.com/preview/features/notification-channels.html

  

如果您定位Android O并在未指定有效通知渠道的情况下发布通知，则通知将无法发布，系统会记录错误。

要解决此问题，您需要创建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);

然后将其分配到您的通知中，如下所示：

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);

<强>更新

如果你想使用NotificationCompat，这是一个简单的例子：

NotificationCompat.Builder mBuilder;
mBuilder = new NotificationCompat.Builder(getApplicationContext())
    .setSmallIcon(R.mipmap.ic_launcher_icon)
    .setContentTitle("Title")
    .setContentText("Text")
    .setOngoing(true)
    .setChannelId(id);

事实上，您必须使用Notification Builder才能通过setChannelId（）;

设置频道ID

Answer 2

关于Toast和Logcat的消息谈论你应该注意2个项目并且他们订购：

1. NotificationChannel mChannel = new NotificationChannel(id, name, importance);
2. builder = new NotificationCompat.Builder(this, id);

NotificationManager notifManager和NotificationChannel mChannel只创建一次。

通知需要设置者：

builder.setContentTitle() // required  
       .setSmallIcon()    // required 
       .setContentText()  // required  

请参阅On Android 8.1 API 27 notification does not display中的示例。