how to use FieldValue.serverTimestamp() to custom model class in android

Question

I am using Firestore as a database and now i want to store server timestamp when user register.

from the Firestore doc

  Map up         


        

Answer 1

You need to change this line of code:

private long timestamp;

with

private Map<String, String> timestamp;

And here are the corresponding public setters and getters:

public void setTimestamp(Map<String, String> timestamp) {
    this.timestamp = timestamp;
}
public Map<String, String> getTimestamp() {
    return timestamp;
}

Remember, that you are setting the timestamp as Map and when you are retrieving, you are retrieving it as a Long.

Answer 2

private com.google.firebase.Timestamp date;

public yourModel(com.google.firebase.Timestamp date) {
        this.date= date;
}

public com.google.firebase.Timestamp getDate() {
        return date;
}

public void setDate(com.google.firebase.Timestamp date) {
        this.date = date;
}

Answer 3

If you only want a timestamp and not an accurate time event then you can use

System.currentTimeMillis();

Answer 4

After lots of research i found a solution for this.

 @ServerTimestamp
 private Date timestamp;

 public Date getTimestamp() {
     return timestamp;
 }
 public void setTimestamp(Date timestamp) {
        this.timestamp = timestamp;
 }

and when calling this class

UserModel userModel = new UserModel();
userModel.setEmail(email);
userModel.setPassword(password);
userModel.setName(name);
userModel.setUid(uid);

insertUserDataToFireStore(userModel); 

This is the link where i found the solution Click here