/
GetBestUser.java
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/
GetBestUser.java
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package com.example.kemannotalari.Services;
import android.content.Context;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.Nullable;
import com.google.firebase.firestore.CollectionReference;
import com.google.firebase.firestore.DocumentSnapshot;
import com.google.firebase.firestore.EventListener;
import com.google.firebase.firestore.FirebaseFirestore;
import com.google.firebase.firestore.FirebaseFirestoreException;
import com.google.firebase.firestore.QuerySnapshot;
import java.util.Map;
public class GetBestUser {
public void getbestuser(final Context context, final TextView textView){
FirebaseFirestore firebaseFirestore = FirebaseFirestore.getInstance();
try {
CollectionReference collectionReference = firebaseFirestore.collection("Bestuser");
collectionReference.addSnapshotListener(new EventListener<QuerySnapshot>() {
@Override
public void onEvent(@Nullable QuerySnapshot value, @Nullable FirebaseFirestoreException error) {
if (error != null) {
Toast.makeText(context,error.getLocalizedMessage().toString(),Toast.LENGTH_LONG).show();
}
if (value!=null){
for (DocumentSnapshot snapshot : value.getDocuments()){
Map<String,Object> data = snapshot.getData();
//Casting
String user = (String) data.get("bestuser");
textView.setText( user);
}
}
}
});
}catch (Exception ad){
ad.printStackTrace();
System.out.println("hata");
}
}
}