如何解决android 通知栏不显示的问题

android 8.0 以后的版本,在创建通知栏的时候,加了一个channelId的东西。要想在上述版本中显示通知,总共分两步

1.创建Channel

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
  String channelId = "whatever"; //根据业务执行
  String channelName = "whatever conent"; //这个是channelid 的解释,在安装的时候会展示给用户看
  int importance = NotificationManager.IMPORTANCE_HIGH;
  createNotificationChannel(channelId, channelName, importance);

}

 

2.引用

Notification notification = new Notification.Builder(this,"whatever") //引用加上channelid
  .setSmallIcon(R.drawable.donkey)
  .setWhen(System.currentTimeMillis())
  .setContentTitle("随便")
  .setContentText("随随便便写")
  .setContentIntent(pendingIntent)
  .build();

 

为了兼容android所有版本,最好在代码里做一下适配

 

 

manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

Intent intent = new Intent(this, AudioPlayerActivity.class);
intent.putExtra("Notifiction",true);


if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
  String channelId = "whatever"; //根据业务执行
  String channelName = "whatever conent"; //这个是channelid 的解释,在安装的时候会展示给用户看
  int importance = NotificationManager.IMPORTANCE_HIGH;
  createNotificationChannel(channelId, channelName, importance);

}

PendingIntent pendingIntent = PendingIntent.getActivity(this,1,intent,PendingIntent.FLAG_UPDATE_CURRENT);
Notification notification = null;
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){

  notification = new Notification.Builder(this,"whatever") //引用加上channelid
    .setSmallIcon(R.drawable.donkey)
    .setWhen(System.currentTimeMillis())
    .setContentTitle("随便")
    .setContentText("随随便便写")
    .setContentIntent(pendingIntent)
    .build();
}else{
  notification = new Notification.Builder(this)
    .setSmallIcon(R.drawable.donkey)
    .setWhen(System.currentTimeMillis())
    .setContentTitle("随便")
    .setContentText("随随便便写")
    .setContentIntent(pendingIntent)
    .build();
}

manager.notify(1,notification);

 

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