Android Studio带有Firebase的红线 [英] Red lines in Android Studio with Firebase

问题描述

我试图将Android Studio与Firebase连接，并且我有一些红线，我不知道为什么。我正在按照本教程中的说明进行操作：

试试这段代码：

  private DatabaseReference mRef; 
 
 mRef = FirebaseDatabase.getInstance（）。getReference（）; 
  

I am trying to connect Android Studio with Firebase and I have some red lines and I don't know why. I am following instruction from this tutorial : https://www.youtube.com/watch?v=tOn5HsQPhUY

Could someone please tell me if I am doing something wrong and what?

Here is a picture of this

解决方案

the Problem is that these commands are from an older firebase Version. I recommend to take a look at the docs here:https://firebase.google.com/docs/database/android/start/

Try this code :

private DatabaseReference mRef;

mRef = FirebaseDatabase.getInstance().getReference();

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