android - com.google.firebase.database.DatabaseException : Found conflicting getters for name: isChangingConfigurations

Question

我正在尝试从 firebase 数据库中读取数据。我的应用程序在运行时崩溃，我似乎遇到了这个 isChangingConfigurations 错误。请注意，此 Info 类是一个 fragment ，我不想使用 ListView 读取数据库。我该如何解决这个问题？

Reading data from here

public class Info extends Fragment {

    private DatabaseReference mDatabase;
    private FirebaseAuth firebaseAuth;
    String userID;

    private TextView resNameChange, statusChange;

    public Info() {

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment

        View rootView = inflater.inflate(R.layout.fragment_info, container, false);

        mDatabase = FirebaseDatabase.getInstance().getReference();

        firebaseAuth = FirebaseAuth.getInstance();
        FirebaseUser user = firebaseAuth.getCurrentUser();
        userID = user.getUid();

        resNameChange = rootView.findViewById(R.id.resNameChange);
        statusChange = rootView.findViewById(R.id.statusChange);

        mDatabase.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                showData(dataSnapshot);
            }

            @Override
            public void onCancelled(DatabaseError databaseError) {

            }
        });
        return rootView;
    }

    public void showData(DataSnapshot dataSnapshot) {
        for (DataSnapshot ds : dataSnapshot.getChildren()) {
            RestaurantInformation resInfo = new RestaurantInformation();
            resInfo.setResName(ds.child(userID).getValue(RestaurantInformation.class).getResName()); // error in this line ************
            resInfo.setStatus(ds.child(userID).getValue(RestaurantInformation.class).getStatus());

            resNameChange.setText(resInfo.getResName());
            statusChange.setText(resInfo.getStatus());
        }
    }
}

RestaurantInformation 类

public class RestaurantInformation extends AppCompatActivity {

    private String resName;
    private String status;

    public RestaurantInformation() {

    }

        public RestaurantInformation(String resName, String status) {
        this.resName = resName;
        this.status = status;
    }

    public String getResName() {
        return resName;
    }

    public void setResName(String resName) {
        this.resName = resName;
    }

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }
}

Answer 1

从报错信息看:isChangingConfigurations是Activity的一个方法名。 Firebase 无法序列化 Activity 对象。你应该删除这部分:

 extends AppCompatActivity

并且不要忘记删除 import import android.support.v7.app.AppCompatActivity;。