Question

当我添加编译com.google.firebase：firebase-server-sdk：[3.0.0，]＆＃39;时，我的应用正在工作。添加firebase自定义outh

错误在此代码中有效，

public void onCreate(){
        super.onCreate();
        if (!FirebaseApp.getApps(this).isEmpty()) {
            FirebaseDatabase.getInstance().setPersistenceEnabled(true);
        }

        }
}
Error:(23, 25) error: method getApps in class FirebaseApp cannot be applied to given types;
required: no arguments
found: Application
reason: actual and formal argument lists differ in length............,

还有这个警告。

org.apache.httpcomponents:httpclient:4.0.1 is ignored for release as it may be conflicting with the internal version provided by Android.
         In case of problem, please repackage it with jarjar to change the class packages

Answer 1

您正在导入firebase服务器SDK。您需要导入Android版本。

按照https://www.firebase.com/docs/android/quickstart.html

上的Android教程进行操作

Answer 2

从错误消息中可能不言而喻，您的方法FirebaseApp.getApp（）不需要任何参数。

尝试将代码更改为：

public void onCreate(){
    super.onCreate();
    if (!FirebaseApp.getApps().isEmpty()) {
        FirebaseDatabase.getInstance().setPersistenceEnabled(true);
    }

    }
}

检查getApp（）文档here

Firebase：添加compile＆com.google.firebase：firebase-server-sdk：[3.0.0，）＆＃39; dependencier

2 个答案: