无法在频道上发布通知“null”目标Api是26 [英] Failed to post notification on channel "null" Target Api is 26

问题描述

两个日志显示

1：对于音量控制以外的操作，不推荐使用流类型

2：请参阅setSound（）的文档以代替使用android.media.AudioAttributes来限定您的播放用例

解决方案

如果遇到这个错误，应该注意3个项目：

1. builder = new NotificationCompat.Builder（this，name）;



29. builder.setChannelId（id）// Android 8需要Oreo API 26及更高版本

错误的原因不符合所有三个要素。

只有必要的setter

  builder.setContentTitle（）//必需
 .setSmallIcon在Android 8 Oreo API 26及更高版本上的通知列表（）//需要
 .setContentText（）//需要
 .setChannelId（id）//在Android 8上需要Oreo API 26及更高版本
  

请参阅在Android 8上，奥利奥API 26和更高版本的通知不会显示。

Two log showing

1: Use of stream types is deprecated for operations other than volume control

2: See the documentation of setSound() for what to use instead with android.media.AudioAttributes to qualify your playback use case

解决方案

If you get this error should be paid attention to 3 items:

1. builder = new NotificationCompat.Builder(this, name);

2. NotificationChannel mChannel = new NotificationChannel(id, name, importance);

3. builder.setChannelId(id) // required for Android 8 Oreo API 26 and later

The reason for the error not in compliance with all three elements.

There are only required setters list for Notification on Android 8 Oreo API 26 and later:

builder.setContentTitle() // required  
       .setSmallIcon()    // required 
       .setContentText()  // required  
       .setChannelId(id)  // required on Android 8 Oreo API 26 and later

See the example in On Android 8 Oreo API 26 and later notification does not display.

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