正如@qbix 所说的你可以使用

As @qbix said you can use

FirebaseDatabase.getInstance().setLogLevel(Logger.Level.INFO)

有多个级别的日志，来自 firebase src:

There are multiple levels logs, from firebase src:

package com.google.firebase.database;

public interface Logger {
  public static enum Level {
    DEBUG,
    INFO,
    WARN,
    ERROR,
    NONE;

    private Level() {
    }
  }
}

更多信息:MakinGIANTS - 发布