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I’m new to firebase and I’m making an app where I want to record two entities in one event. I want to record a user and a bakery, but I’m not getting it. The user records everything right, but at bakery time gives the following error:
java.lang.Nullpointerexception: Can’t pass null for argument 'pathString' in Child()
Follows the code:
public class RegisterBakeryActivity extends CommonActivity implements GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener, DatabaseReference.CompletionListener{
private GoogleApiClient mGoogleApiClient;
private Location mLastLocation;
private Resources resources;
private EditText inputCorporateName, inputFantasyName, inputFone, inputEmail, inputCnpj, inputStreet, inputNumber, inputDiscrict, inputCity, inputAdminPassword;
private String corporateName, fantasyName, fone, email, cnpj, street, district, city, adminPassword, idString, numberString, cnpjAux;
private int number;
private static final String TAG = RegisterBakeryActivity.class.getSimpleName();
private ProgressDialog progressDialog, pDialog;
// URL to get contacts JSON
private static String url = "http://receitaws.com.br/v1/cnpj/";
// JSON Node names
private static final String TAG_FANTASY = "fantasia";
private static final String TAG_NAME = "nome";
private static final String TAG_EMAIL = "email";
private static final String TAG_STREET = "logradouro";
private static final String TAG_DISTRICT = "bairro";
private static final String TAG_PHONE = "telefone";
private static final String TAG_NUMBER = "numero";
private static final String TAG_CITY = "municipio";
private String nameJson;
private String numberJson;
private String emailJson;
private String fantasyJson;
private String phoneJson;
private String streetJson;
private String districtJson;
private String cityJson;
private User user;
private Bakery bakery;
private Adress adress;
private FirebaseAuth mAuth;
private FirebaseAuth.AuthStateListener mAuthStateListener;
// Hashmap for ListView
ArrayList<HashMap<String, String>> bakerieList;
private String code;
private String adressLocation = "";
private Location l;
private Double latitude, longitude;
private DatabaseReference mBakeriessNodeRef;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register_bakery);
callConnection();
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
bakerieList = new ArrayList<HashMap<String, String>>();
resources = getResources();
mAuth = FirebaseAuth.getInstance();
Button btnSearchByCNPJ = (Button) findViewById(R.id.btn_search_by_cnpj);
btnSearchByCNPJ.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
cnpjAux = inputCnpj.getText().toString().trim();
// Calling async task to get json
new GetBakery().execute();
}
});
Button btnAddBakery = (Button) findViewById(R.id.btn_add_bakery);
btnAddBakery.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (validateFields()) {
openProgressDialog("Cadastrando...", "Aguarde um momento!");
initUser();
initBakery();
saveUser();
}
}
});
mAuthStateListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser firebaseUser = firebaseAuth.getCurrentUser();
if (firebaseUser == null || user.getId() != null) {
return;
}
user.setId(firebaseUser.getUid());
user.saveDB(RegisterBakeryActivity.this);
bakery.saveDB(RegisterBakeryActivity.this);
}
};
initViews();
initWatchers();
}
/**
* Chama o método para limpar erros
*
* @param s Editable
*/
private void callClearErrors(Editable s) {
if (!s.toString().isEmpty()) {
clearErrorFields(inputCorporateName);
}
}
/**
* Efetua a validação dos campos.Nesse caso, valida se os campos não estão vazios e se tem
* tamanho permitido.
* Nesse método você poderia colocar outros tipos de validações de acordo com a sua necessidade.
*
* @return boolean que indica se os campos foram validados com sucesso ou não
*/
private boolean validateFields() {
corporateName = inputCorporateName.getText().toString().trim();
email = inputEmail.getText().toString().trim();
fantasyName = inputFantasyName.getText().toString().trim();
fone = inputFone.getText().toString().trim();
cnpj = inputCnpj.getText().toString().trim();
street = inputStreet.getText().toString().trim();
number = Integer.parseInt(inputNumber.getText().toString().trim());
String numberAux = inputNumber.getText().toString().trim();
district = inputDiscrict.getText().toString().trim();
city = inputCity.getText().toString().trim();
adminPassword = inputAdminPassword.getText().toString().trim();
return (!isEmptyFields(email, fantasyName, fone, cnpj, street, district, numberAux, city, adminPassword) && hasSizeValid(fone, cnpj) && emailValid(email));
}
private boolean isEmptyFields(String email, String fantasyName, String fone, String cnpj, String street, String district, String number, String city, String adminPassword) {
if (TextUtils.isEmpty(email)) {
inputEmail.requestFocus(); //seta o foco para o campo email
inputEmail.setError(resources.getString(R.string.register_email_required));
return true;
} else if (TextUtils.isEmpty(fantasyName)) {
inputFantasyName.requestFocus(); //seta o foco para o campo
inputFantasyName.setError(resources.getString(R.string.register_field_required));
return true;
} else if (TextUtils.isEmpty(fone)) {
inputFone.requestFocus(); //seta o foco para o campo
inputFone.setError(resources.getString(R.string.register_field_required));
return true;
} else if (TextUtils.isEmpty(cnpj)) {
inputCnpj.requestFocus(); //seta o foco para o campo
inputCnpj.setError(resources.getString(R.string.register_field_required));
return true;
} else if (TextUtils.isEmpty(street)) {
inputStreet.requestFocus(); //seta o foco para o campo
inputStreet.setError(resources.getString(R.string.register_field_required));
return true;
} else if (TextUtils.isEmpty(district)) {
inputDiscrict.requestFocus(); //seta o foco para o campo
inputDiscrict.setError(resources.getString(R.string.register_field_required));
return true;
} else if (TextUtils.isEmpty(number)) {
inputNumber.requestFocus(); //seta o foco para o campo
inputNumber.setError(resources.getString(R.string.register_field_required));
return true;
} else if (TextUtils.isEmpty(city)) {
inputCity.requestFocus(); //seta o foco para o campo
inputCity.setError(resources.getString(R.string.register_field_required));
return true;
} else if (TextUtils.isEmpty(adminPassword)) {
inputAdminPassword.requestFocus(); //seta o foco para o campo
inputAdminPassword.setError(resources.getString(R.string.register_field_required));
return true;
}
return false;
}
private boolean hasSizeValid(String fone, String cnpj) {
if (!(fone.length() > 11)) {
inputFone.requestFocus();
inputFone.setError(resources.getString(R.string.register_fone_size_invalid));
return false;
} else if (!(cnpj.length() > 4)) {
inputCnpj.requestFocus();
inputCnpj.setError(resources.getString(R.string.register_cnpj_size_invalid));
return false;
}
return true;
}
/**
* Limpa os ícones e as mensagens de erro dos campos desejados
*
* @param editTexts lista de campos do tipo EditText
*/
private void clearErrorFields(EditText... editTexts) {
for (EditText editText : editTexts) {
editText.setError(null);
}
}
private boolean emailValid(String email) {
String Expn = "^(([\\w-]+\\.)+[\\w-]+|([a-zA-Z]{1}|[\\w-]{2,}))@"
+ "((([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\.([0-1]?"
+ "[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\."
+ "([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\\.([0-1]?"
+ "[0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}|"
+ "([a-zA-Z]+[\\w-]+\\.)+[a-zA-Z]{2,4})$";
if (email.matches(Expn) && email.length() > 0) {
return true;
} else {
inputEmail.requestFocus();
inputEmail.setError(resources.getString(R.string.register_email_char_invalid));
return false;
}
}
/**
* Async task class to get json by making HTTP call
*/
private class GetBakery extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
openProgressDialog("Buscando dados...", "Aguarde!");
}
@Override
protected Void doInBackground(Void... arg0) {
// Creating service handler class instance
ServiceHandler sh = new ServiceHandler();
url = url + cnpjAux;
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url, ServiceHandler.GET);
Log.d("Response: ", "> " + jsonStr);
if (jsonStr != null) {
try {
JSONObject c = new JSONObject(jsonStr);
fantasyJson = c.optString(TAG_FANTASY);
nameJson = c.optString(TAG_NAME);
emailJson = c.optString(TAG_EMAIL);
streetJson = c.optString(TAG_STREET);
numberJson = c.optString(TAG_NUMBER);
phoneJson = c.optString(TAG_PHONE);
districtJson = c.optString(TAG_DISTRICT);
cityJson = c.optString(TAG_CITY);
// tmp hashmap for single contact
HashMap<String, String> bakery = new HashMap<String, String>();
// adding each child node to HashMap key => value
bakery.put(TAG_FANTASY, fantasyJson);
bakery.put(TAG_NAME, nameJson);
bakery.put(TAG_EMAIL, emailJson);
bakery.put(TAG_PHONE, phoneJson);
bakery.put(TAG_CITY, cityJson);
bakery.put(TAG_DISTRICT, districtJson);
bakery.put(TAG_NUMBER, numberJson);
bakery.put(TAG_STREET, streetJson);
adressLocation = streetJson + ", " + numberJson;
List<Address> list = new ArrayList<Address>();
Geocoder geocoder = new Geocoder(RegisterBakeryActivity.this, Locale.getDefault());
String error = "";
try {
list = (ArrayList<Address>) geocoder.getFromLocationName(adressLocation, 1);
} catch (IOException e) {
e.printStackTrace();
error = "Network problem";
} catch (IllegalArgumentException e) {
e.printStackTrace();
error = "Illegal arguments";
}
if (list != null && list.size() > 0) {
Address a = list.get(0);
latitude = a.getLatitude();
longitude = a.getLongitude();
} else {
}
// adding contact to contact list
bakerieList.add(bakery);
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
closeProgressDialog();
setEditText(fantasyJson, nameJson, emailJson, streetJson, numberJson, districtJson, cityJson, phoneJson);
}
}
private void setEditText(String fantasy, String name, String email, String street, String number, String district, String city, String phone) {
inputDiscrict.setText(district);
inputCity.setText(city);
inputEmail.setText(email);
inputFantasyName.setText(fantasy);
inputFone.setText(phone);
inputCorporateName.setText(name);
inputStreet.setText(street);
inputNumber.setText(number);
}
private synchronized void callConnection(){
Log.i("LOG", "RegisterBakeryActivity.callConnection()");
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addOnConnectionFailedListener(this)
.addConnectionCallbacks(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
@Override
public void onConnected(Bundle bundle) {
Log.i("LOG", "AddressLocationActivity.onConnected(" + bundle + ")");
//l = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if(l != null){
mLastLocation = l;
}
}
@Override
public void onConnectionSuspended(int i) {
Log.i("LOG", "AddressLocationActivity.onConnectionSuspended(" + i + ")");
}
@Override
protected void initViews() {
inputCorporateName = (EditText) findViewById(R.id.input_corporate_name);
inputCorporateName.setKeyListener(null);
inputFantasyName = (EditText) findViewById(R.id.input_fantasy_name);
inputFone = (EditText) findViewById(R.id.input_fone);
MaskEditTextChangedListener maskFone = new MaskEditTextChangedListener("(##)####-####", inputFone);
inputFone.addTextChangedListener(maskFone);
inputEmail = (EditText) findViewById(R.id.input_email);
inputCnpj = (EditText) findViewById(R.id.input_cnpj);
inputStreet = (EditText) findViewById(R.id.input_street);
inputNumber = (EditText) findViewById(R.id.input_number);
inputDiscrict = (EditText) findViewById(R.id.input_district);
inputCity = (EditText) findViewById(R.id.input_city);
inputAdminPassword = (EditText) findViewById(R.id.input_admin_password);
}
@Override
protected void initUser() {
user = new User();
user.setName(fantasyName);
user.setEmail(email);
final Encryption cripto = Encryption.getInstance(adminPassword);
user.setPassword(cripto.getEncryptPassword());
user.setType(true);
user.setSendNotification(true);
}
private void initBakery(){
bakery = new Bakery();
adress = new Adress(user.getId(), null, null, street, district, city, number, latitude, longitude, null);
bakery.setEmail(email);
bakery.setAdress(adress);
bakery.setCnpj(cnpj);
bakery.setCorporateName(corporateName);
bakery.setFantasyName(fantasyName);
bakery.setFone(fone);
bakery.setUserID(user.getId());
}
private void initWatchers(){
TextWatcher textWatcher = new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
callClearErrors(s);
}
};
inputCorporateName.addTextChangedListener(textWatcher);
inputFantasyName.addTextChangedListener(textWatcher);
inputFone.addTextChangedListener(textWatcher);
inputEmail.addTextChangedListener(textWatcher);
inputCnpj.addTextChangedListener(textWatcher);
inputStreet.addTextChangedListener(textWatcher);
inputNumber.addTextChangedListener(textWatcher);
inputDiscrict.addTextChangedListener(textWatcher);
inputCity.addTextChangedListener(textWatcher);
inputAdminPassword.addTextChangedListener(textWatcher);
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Log.i("LOG", "AddressLocationActivity.onConnectionFailed(" + connectionResult + ")");
}
private void saveUser() {
mAuth.createUserWithEmailAndPassword(
user.getEmail(),
user.getPassword()
).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (!task.isSuccessful()) {
closeProgressDialog();
}
}
}).addOnFailureListener(this, new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
showSnackbar(e.getMessage());
}
});
}
@Override
public void onComplete(DatabaseError databaseError, DatabaseReference databaseReference) {
//bakery.saveDB(RegisterBakeryActivity.this);
mAuth.signOut();
showToast("Padaria registrada com sucesso!");
closeProgressDialog();
finish();
}
@Override
protected void onStart() {
super.onStart();
mAuth.addAuthStateListener(mAuthStateListener);
}
@Override
protected void onStop() {
super.onStop();
if (mAuthStateListener != null) {
mAuth.removeAuthStateListener(mAuthStateListener);
}
}
}
User class:
public class User {
private String id;
private String name;
private String email;
private String password;
private String newPassword;
private boolean type;
private boolean sendNotification;
private String image;
public User() {
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public void setNameIfNull(String name) {
if (this.name == null) {
this.name = name;
}
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public void setEmailIfNull(String email) {
if (this.email == null) {
this.email = email;
}
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getNewPassword() {
return newPassword;
}
public void setNewPassword(String newPassword) {
this.newPassword = newPassword;
}
public boolean isType() {
return type;
}
public void setType(boolean type) {
this.type = type;
}
public boolean isSendNotification() {
return sendNotification;
}
public void setSendNotification(boolean sendNotification) {
this.sendNotification = sendNotification;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
public void saveDB(DatabaseReference.CompletionListener... completionListener) {
DatabaseReference firebase = LibraryClass.getFirebase().child("users").child(getId());
if (completionListener.length == 0) {
setPassword(null);
setId(null);
firebase.setValue(this);
} else {
setPassword(null);
setId(null);
firebase.setValue(this, completionListener[0]);
}
}
}
Bakery class:
public class Bakery {
private String id;
private String userID;
private String corporateName;
private String fantasyName;
private String fone;
private String email;
private String cnpj;
private String bakeryImage;
private Adress adress;
public Bakery() {}
public Bakery(String id, String userID, String corporateName, String fantasyName, String fone,
String email, String cnpj, String bakeryImage, Adress adress) {
this.id = id;
this.userID = userID;
this.corporateName = corporateName;
this.fantasyName = fantasyName;
this.fone = fone;
this.email = email;
this.cnpj = cnpj;
this.bakeryImage = bakeryImage;
this.adress = adress;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getUserID() {
return userID;
}
public void setUserID(String userID) {
this.userID = userID;
}
public String getCorporateName() {
return corporateName;
}
public void setCorporateName(String corporateName) {
this.corporateName = corporateName;
}
public String getFantasyName() {
return fantasyName;
}
public void setFantasyName(String fantasyName) {
this.fantasyName = fantasyName;
}
public String getFone() {
return fone;
}
public void setFone(String fone) {
this.fone = fone;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getCnpj() {
return cnpj;
}
public void setCnpj(String cnpj) {
this.cnpj = cnpj;
}
public String getBakeryImage() {
return bakeryImage;
}
public void setBakeryImage(String bakeryImage) {
this.bakeryImage = bakeryImage;
}
public Adress getAdress() {
return adress;
}
public void setAdress(Adress adress) {
this.adress = adress;
}
public void saveDB(DatabaseReference.CompletionListener... completionListener) {
DatabaseReference firebase = LibraryClass.getFirebase().child("bakeries").child(getId());
if (completionListener.length == 0) {
firebase.setValue(this);
} else {
firebase.setValue(this, completionListener[0]);
}
}
}
The error comes from this line:
bakery.saveDB(RegisterBakeryActivity.this);
probably the command ". Child(getId()" inside the Bakery is coming null.
– Mr_Anderson