在android studio、Java、firebase中删除并更新已按ID搜索的条目

import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.ValueEventListener;

FirebaseDatabase database = FirebaseDatabase.getInstance();
DatabaseReference ref = database.getReference("your_database_reference");

String itemId = "your_item_id";
ref.child(itemId).removeValue(new DatabaseReference.CompletionListener() {
    @Override
    public void onComplete(DatabaseError databaseError, DatabaseReference databaseReference) {
        if (databaseError != null) {
            // 删除失败
        } else {
            // 删除成功
        }
    }
});

String itemId = "your_item_id";
ref.child(itemId).child("property_name").setValue("new_value", new DatabaseReference.CompletionListener() {
    @Override
    public void onComplete(DatabaseError databaseError, DatabaseReference databaseReference) {
        if (databaseError != null) {
            // 更新失败
        } else {
            // 更新成功
        }
    }
});