[英]Error when changing the Firebase database in Android
I have imported a code for the Firebase Chat from a friend, including the google-services.json file, in which the certificates and the link to his database is stored. 我从一个朋友那里导入了Firebase Chat的代码,包括google-services.json文件,该文件中存储了证书和指向他的数据库的链接。
The code worked perfectly, but then I wanted to connect the chat to my database so I have deleted his json file and inserted mine, with my database info. 该代码可以正常工作,但是后来我想将聊天连接到我的数据库,因此我删除了他的json文件,并在我的数据库信息中插入了我的文件。
Now the chat opens, one can log in, but it crashes with this error: 现在聊天打开,一个人可以登录,但由于此错误而崩溃:
com.google.firebase.database.DatabaseException: Can't convert object
of type java.lang.String to type
So I can track this to a class file that has this inside: 因此,我可以将其跟踪到具有以下内容的类文件中:
public class ChatMessage { private String messageText; private String messageUser; private long messageTime; public ChatMessage(String messageText, String messageUser) { this.messageText = messageText; this.messageUser = messageUser; messageTime = new Date().getTime(); } public ChatMessage() { } public String getMessageText() { return messageText; } public void setMessageText(String messageText) { this.messageText = messageText; } public String getMessageUser() { return messageUser; } public void setMessageUser(String messageUser) { this.messageUser = messageUser; } public long getMessageTime() { return messageTime; } public void setMessageTime(long messageTime) { this.messageTime = messageTime; } }
try to add default constructor. 尝试添加默认构造函数。
public ChatMessage() { 公共ChatMessage(){
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.