Firebase不断将我的孩子重命名为辅导

Question

这就是我推送数据的方式，它包括我考虑该sharedpref项是否为null，如果它为null，则调用生成用户名的方法，并重新启动活动，以便看到更改。

SharedPreferences prefs = getApplication().getSharedPreferences("SophiePrefs", 0);

                mUsername = prefs.getString("username", null);
                if(mUsername!=null){
                    mFirebaseBackupHistory.child(mUsername).push().setValue(allthemsgs);
                }else {
                    setupUsername();
                    finish();
                    overridePendingTransition(0, 0);
                    startActivity(getIntent());
                    overridePendingTransition(0, 0);
                }

这就是我获取用户名的方式：

SharedPreferences prefs = getApplication().getSharedPreferences("ChatPrefs", 0); 
mUsername = prefs.getString("username", null); 
if (mUsername == null) { 
    Random r = new Random(); // Assign a random user name if we don't have one saved. 
    mUsername = "Client" + r.nextInt(100000); 
    prefs.edit().putString("username", mUsername).commit(); 
}

我继续得到这个

{
  "tutored" : {
    "-KSRR7nDjf01iyexk_wl" : {
      "left" : false,
      "text" : "hi"
    },
    "-KSRR8LPWohiIfA0BnCp" : {
      "left" : true,
      "text" : "Hey,I'm Sophie,What would you like to know"
    },
    "-KSRR9xHoEf1g-Jf8BHN" : {
      "left" : false,
      "text" : "shit"
    },
    "-KSRRACSJXn8db6JhGDE" : {
      "left" : true,
      "text" : "Wait a moment as I look for the answer"
    },
    "-KSRRBuFcwTJpjIh9qum" : {
      "left" : false,
      "text" : "this sucks"
    },
    "-KSRRBy2gFcY2U7iLaXv" : {
      "left" : true,
      "text" : "Wait a moment as I look for the answer"
    }
  }
}

没有mUsername没有辅导......它是我为每个人用应用生成的动态字符串