I've tried out many times, still couldn't display current logged in data of a user. I would like to fetch the data from Firestore database to the user's profile page but it keep blank.
Here's my register.java:
public class Register extends AppCompatActivity {
//Variables
TextInputLayout username, email, PhoneNo, password;
RadioGroup radioGroup;
RadioButton selectedElderly, selectedGuardian;
Button regBtn, regToLoginBtn;
FirebaseAuth fAuth;
FirebaseFirestore fStore;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
fAuth = FirebaseAuth.getInstance();
fStore = FirebaseFirestore.getInstance();
//Hooks to all xml elements in activity_register.xml
username = findViewById(R.id.reg_username);
email = findViewById(R.id.reg_email);
PhoneNo = findViewById(R.id.reg_phoneNo);
password = findViewById(R.id.reg_password);
regBtn = findViewById(R.id.reg_btn);
regToLoginBtn = findViewById(R.id.reg_login_btn);
radioGroup = findViewById(R.id.radio_type);
selectedGuardian = findViewById(R.id.radioGuardian);
selectedElderly = findViewById(R.id.radioElderly);
regToLoginBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(Register.this, Login.class);
startActivity(intent);
}
});
regBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (validateUsername() && validateEmail() && validatePhoneNo() && validateUserType() && validatePassword() == true) {
Intent intent = new Intent(Register.this, Login.class);
startActivity(intent);
} else {
validateUsername();
validateEmail();
validatePhoneNo();
validateUserType();
validatePassword();
}
fAuth.createUserWithEmailAndPassword(email.getEditText().getText().toString(), password.getEditText().getText().toString()).addOnSuccessListener(new OnSuccessListener<AuthResult>() {
#Override
public void onSuccess(AuthResult authResult) {
FirebaseUser user = fAuth.getCurrentUser();
Toast.makeText(Register.this, "Account Created", Toast.LENGTH_SHORT).show();
DocumentReference df = fStore.collection("Users").document(user.getUid());
Map<String, Object> userInfo = new HashMap<>();
userInfo.put("Username", username.getEditText().getText().toString());
userInfo.put("Email", email.getEditText().getText().toString());
userInfo.put("phoneNo", PhoneNo.getEditText().getText().toString());
userInfo.put("Password",password.getEditText().getText().toString());
//specify the user is elderly
if (selectedElderly.isChecked()) {
userInfo.put("isElderly", "1");
}
if (selectedGuardian.isChecked()) {
userInfo.put("isGuardian", "1");
}
df.set(userInfo);
if (selectedElderly.isChecked()) {
startActivity(new Intent(getApplicationContext(), Login.class));
finish();
}
if (selectedGuardian.isChecked()) {
startActivity(new Intent(getApplicationContext(), Login.class));
finish();
}
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
Toast.makeText(Register.this, "Failed to Create Account", Toast.LENGTH_SHORT).show();
}
});
}
Here's profile.java:
public class profileGuardian extends AppCompatActivity {
TextInputLayout username, email, PhoneNo, password, address;
TextView usernameLabel, emailLabel;
Button save;
FirebaseAuth fAuth;
FirebaseFirestore fStore;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_profile_guardian);
//Hooks
username = findViewById(R.id.full_name_profile);
email = (TextInputLayout) findViewById(R.id.email_profile);
PhoneNo = (TextInputLayout) findViewById(R.id.phoneNo_profile);
password = (TextInputLayout) findViewById(R.id.password_profile);
address = (TextInputLayout) findViewById(R.id.address_profile);
emailLabel = (TextView) findViewById(R.id.email_field);
usernameLabel = (TextView) findViewById(R.id.username_field);
save = findViewById(R.id.save_btn);
getData();
}
private void getData() {
fStore = FirebaseFirestore.getInstance();
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
final String current = user.getUid();//getting unique user id
fStore.collection("Users")
.whereEqualTo("uId", current)//looks for the corresponding value with the field
// in the database
.get()
.addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
#Override
public void onComplete(#NonNull Task<QuerySnapshot> task) {
if (task.isSuccessful()) {
for (DocumentSnapshot document : task.getResult()) {
emailLabel.setText((CharSequence) document.get("Email"));
usernameLabel.setText((CharSequence) document.get("Username"));
username.getEditText().setText((CharSequence) document.get("Username"));
email.getEditText().setText((CharSequence) document.get("Email"));
PhoneNo.getEditText().setText((CharSequence) document.get("phoneNo"));
password.getEditText().setText((CharSequence) document.get("Password"));
}
}
}
});
}
Here's my database structure:
I've tried multiple solution on Youtube but keep failed..
In the presented code get method returns results of type QuerySnapshot (reference). I think that task.getResult() will get QuerySnapshot object not list of documents, so the loop is not working properly.
According to reference for statement should be something like this instead:
for (DocumentSnapshot document : task.getResult().getDocuments())
than it should be possible to iterate over list of documents included in QuerySnapshot.
Related
so I'm making a chatting app, I'm facing the problem where I'm trying to add the user details to my Realtime database, and it's just not working so I can later on show them to the logged in user
this is my Register Activity
public class RegisterActivity extends AppCompatActivity {
EditText username;
EditText email;
EditText password;
Button registerButton;
TextView oldMember;
FirebaseAuth auth;
DatabaseReference myRef;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
username = findViewById(R.id.usernameEditText);
email = findViewById(R.id.emailEditText);
password = findViewById(R.id.passwordEditText);
registerButton = findViewById(R.id.RegisterButton);
oldMember = findViewById(R.id.LoginTextView);
auth = FirebaseAuth.getInstance();
myRef = FirebaseDatabase.getInstance().getReference("MyUsers");
registerButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String usernameText = username.getText().toString();
String emailText = email.getText().toString();
String passwordText = password.getText().toString();
if(TextUtils.isEmpty(usernameText) || TextUtils.isEmpty(emailText) || TextUtils.isEmpty(passwordText)){
Toast.makeText(RegisterActivity.this, "Please Fill the Required Info", Toast.LENGTH_SHORT).show();
} else {
Register(usernameText, emailText, passwordText);
}
}
});
oldMember.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(), LoginActivity.class);
startActivity(intent);
finish();
}
});
}
private void Register(String username, String email, String password){
auth.createUserWithEmailAndPassword(email, password)
.addOnCompleteListener(new OnCompleteListener<AuthResult>() {
#Override
public void onComplete(#NonNull #org.jetbrains.annotations.NotNull Task<AuthResult> task) {
if(task.isSuccessful()){
FirebaseUser firebaseUser = auth.getCurrentUser();
String userid = firebaseUser.getUid();
myRef = FirebaseDatabase.getInstance()
.getReference("MyUsers")
.child(userid);
HashMap<String, String> hashMap = new HashMap<>();
hashMap.put("id", userid);
hashMap.put("username", username);
hashMap.put("imageURL", "default");
myRef.setValue(hashMap).addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull #NotNull Task<Void> task) {
if(task.isSuccessful()){
Intent intent = new Intent(getApplicationContext(), MainHomeActivity.class);
//intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
finish();
}
}
});
} else {
Toast.makeText(RegisterActivity.this, "Invalid Email or Password", Toast.LENGTH_SHORT).show();
}
}
});
}
}
this is how my realtime database looks like
and these are my realtime database rules
"rules": {
".read": true,
".write": true
}
}
I would appreciate any help!
Instead of using HashMap for adding data to firebase realtime database
myRef = FirebaseDatabase.getInstance()
.getReference("MyUsers")
.child(userid);
HashMap<String, String> hashMap = new HashMap<>();
hashMap.put("id", userid);
hashMap.put("username", username);
hashMap.put("imageURL", "default");
Create a model class for the information
Example model class for the given information
public class userRegisteration(){
Sting id;
String username;
String imageURL;
//to add details it needs an empty constructor
userRegisteration(){}
userRegisteration(String id,String username,String imageURL){
this.id = id;
this.username = username;
this.imageURL = imageURL;
}
public void setID(String id){this.id = id}
public void setUsername(String username){this.username= username}
public void setImgeURL(String imageURL){this.imageURL = imageURL}
public String getID(){return id}
public String getUsername(){return username}
public String getImageURL(){return imageURL}
}
Trust me it'll work
I am trying to sync my Realtime Firebase database with my code.
I currently have Firebase Auth working, and I am able to get user ids, but my Realtime database stays on null. My Firebase Realtime database rules are currently set to true.
Is there something wrong with my code? I am trying to pull in the user id, first name, and last name into the Firebase Database.
public class Add_Info_After_Registration extends AppCompatActivity {
private EditText FirstName, LastName;
private ImageButton RegisterInfoButton;
private FirebaseAuth mAuth;
private DatabaseReference UsersReference;
//Firebase Things//
String currentUserID;
//Firebase Things//
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add__info__after__registration);
//this is referring to storing username information in firebase//
mAuth = FirebaseAuth.getInstance();
currentUserID = mAuth.getCurrentUser().getUid();
UsersReference = FirebaseDatabase.getInstance().getReference().child("Users").child(currentUserID);
//this is referring to storing username information in firebase//
FirstName = (EditText) findViewById(R.id.add_info_first_name);
LastName = (EditText) findViewById(R.id.add_info_last_name);
RegisterInfoButton = (ImageButton) findViewById(R.id.register_submit_button);
mAuth = FirebaseAuth.getInstance();
RegisterInfoButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v)
{
SaveAccountSetUpInformation();
SendUserToMainActivity();
}
});
}
private void SaveAccountSetUpInformation()
{
String firstname = FirstName.getText().toString();
String lastname = LastName.getText().toString();
if(TextUtils.isEmpty(firstname))
{
Toast.makeText(this, "Please insert first name", Toast.LENGTH_SHORT).show();
}
if(TextUtils.isEmpty(lastname))
{
Toast.makeText(this, "Please insert last name", Toast.LENGTH_SHORT).show();
}
else
{
HashMap userMap = new HashMap();
userMap.put("firstname", firstname);
userMap.put("lastname", lastname);
//this is referring to storing username information in firebase//
UsersReference.updateChildren(userMap).addOnCompleteListener(new OnCompleteListener() {
#Override
public void onComplete(#NonNull Task task)
{
if(task.isSuccessful())
{
SendUserToMainActivity();
Toast.makeText(Add_Info_After_Registration.this, "Your Account is Created Sucessfully", Toast.LENGTH_LONG).show();
}
else
{
String message = task.getException().getMessage();
Toast.makeText(Add_Info_After_Registration.this, "Error Occured:"+ message, Toast.LENGTH_SHORT).show();
}
}
});
}
}
private void SendUserToMainActivity()
{
Intent setupIntent = new Intent(Add_Info_After_Registration.this, MainActivity.class);
setupIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(setupIntent);
finish();
}
}
I am trying to keep the user logged into my chat app even after they close the app. So the only way they will be logged out of their account is if they click the log out button.
So far the user does stayed logged in but when I click the log out button, the app crashes. This is the error I get
Attempt to invoke virtual method 'java.lang.String com.google.firebase.auth.FirebaseUser.getUid()' on a null object reference
at com.example.chatterbox.ChatsFragment.onCreateView(ChatsFragment.java:54)
the problem is that that error is from a different file. Can someone please help me ?
public class LoginActivity extends AppCompatActivity {
private FirebaseAuth mAuth;
private ProgressDialog loadingBar;
private Button LoginButton ;
private EditText UserEmail, UserPassword;
private TextView NeedNewAccountLink, ForgetPasswordLink;
private DatabaseReference UsersRef;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
RelativeLayout relativeLayout = findViewById(R.id.layout);
AnimationDrawable animationDrawable = (AnimationDrawable) relativeLayout.getBackground();
animationDrawable.setEnterFadeDuration(5000);
animationDrawable.setExitFadeDuration(5000);
animationDrawable.start();
mAuth = FirebaseAuth.getInstance();
UsersRef = FirebaseDatabase.getInstance().getReference().child("Users");
InitializeFields();
if (UsersRef != null) {
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
finish();
}
NeedNewAccountLink.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
SendUserToRegisterActivity();
}
});
LoginButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
AllowUserToLogin();
}
});
}
private void AllowUserToLogin () {
String email = UserEmail.getText().toString();
String password = UserPassword.getText().toString();
if (TextUtils.isEmpty(email)) {
Toast.makeText(this, "Please enter your email", Toast.LENGTH_SHORT).show();
}
if (TextUtils.isEmpty(password)) {
Toast.makeText(this, "Please enter your password", Toast.LENGTH_SHORT).show();
} else {
loadingBar.setTitle("Logging In");
loadingBar.setMessage("Please wait...");
loadingBar.setCanceledOnTouchOutside(true);
loadingBar.show();
mAuth.signInWithEmailAndPassword(email, password)
.addOnCompleteListener(new OnCompleteListener<AuthResult>() {
#Override
public void onComplete(#NonNull Task<AuthResult> task) {
if (task.isSuccessful()) {
String currentUserId = mAuth.getCurrentUser().getUid();
String deviceToken = FirebaseInstanceId.getInstance().getToken();
UsersRef.child(currentUserId).child("device_token")
.setValue(deviceToken)
.addOnCompleteListener(new OnCompleteListener<Void>() {
#Override
public void onComplete(#NonNull Task<Void> task) {
if (task.isSuccessful()) {
SendUserToMainActivity();
Toast.makeText(LoginActivity.this, "Logged in successfully", Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
}
});
} else {
String message = task.getException().toString();
Toast.makeText(LoginActivity.this, "Error:" + message, Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
}
});
}
}
private void InitializeFields () {
LoginButton = (Button) findViewById(R.id.login_button);
UserEmail = (EditText) findViewById(R.id.login_email);
UserPassword = (EditText) findViewById(R.id.login_password);
NeedNewAccountLink = (TextView) findViewById(R.id.need_new_account_link);
ForgetPasswordLink = (TextView) findViewById(R.id.forget_password_link);
loadingBar = new ProgressDialog(this);
}
private void SendUserToMainActivity () {
Intent mainIntent = new Intent(LoginActivity.this, MainActivity.class);
mainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(mainIntent);
finish();
}
private void SendUserToRegisterActivity () {
Intent registerIntent = new Intent(LoginActivity.this, RegisterActivity.class);
startActivity(registerIntent);
}
Error line :
currentUserID = mAuth.getCurrentUser().getUid();
This is how I check if the user is logged in. If they are I send them to the MainActivity. If they are not they stay on the LoginActivity
if (UsersRef != null) {
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
finish();
}
You call
mAuth = FirebaseAuth.getInstance();
UsersRef = FirebaseDatabase.getInstance().getReference().child("Users");
and then
if (UsersRef != null) {
//do something
}
It's a bit odd because you need to know if there's currently a valid user logged in Firebase. This snippet maybe can be useful:
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
if (user != null) {
// User is signed in
} else {
// No user is signed in
}
But you're checking if the variable UsersRef (that is a DatabaseReference, i guess) is null or not... Indeed you just gived it a value!!!
Use addOnSuccessListener instead of addOnCompleteListener
auth.signInWithEmailAndPassword(mEmail, mPassword)
.addOnSuccessListener(LoginActivity.this, new OnSuccessListener<AuthResult>(){
#Override
public void onsuccess(#NonNull AuthResult authResult){
//your code goes here
}
});
I enter my main activity, inside the MainActivity I have registration, after the registartion accure I want to log out from firebase so that he doesn't remember me.
Because when I retured to the MainActivity after the signout he still remembers the previous user when I register as a new user. This occurs only after logging and logout immediately. Btw, if I run the app its working fine. The problem is only when I signout and then going to RegistrationActivity to register another user.
Here is the MainActivity code:
public class MainActivity extends AppCompatActivity {
private SignInButton signIn;
private int RC_SIGN_IN=1;
private GoogleSignInClient mGoogleSignInClient;
private String TAG = "MainActivity";
private FirebaseAuth mAuth;
private Button registration;
private EditText email;
private EditText password;
private Button login;
private BottomNavigationView bottomNavigationItemView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
signIn = (SignInButton)findViewById(R.id.sign_in_button);
mAuth = FirebaseAuth.getInstance();
registration = (Button) findViewById(R.id.registrate);
email = (EditText)findViewById(R.id.email);
password = (EditText)findViewById(R.id.password);
login = (Button)findViewById(R.id.login);
bottomNavigationItemView = (BottomNavigationView)findViewById(R.id.navB) ;
bottomNavigationItemView.getMenu().getItem(0).setChecked(true);
bottomNavigationItemView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.register_menu: {
Intent intent = new Intent(MainActivity.this, RegistrationActivity.class);
startActivity(intent);
break;
}
}
return true;
}
});
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken(getString(R.string.default_web_client_id))
.requestEmail()
.build();
mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
signIn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
signIn();
}
});
registration.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, RegistrationActivity.class);
startActivity(intent);
}
});
login.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String email_text = email.getText().toString().trim();
String password_text = password.getText().toString().trim();
if(TextUtils.isEmpty(email_text) || TextUtils.isEmpty(password_text))
{
Toast.makeText(MainActivity.this, "One or more fields are empty", Toast.LENGTH_LONG).show();
}
else
{
mAuth.signInWithEmailAndPassword(email_text, password_text).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
#Override
public void onComplete(#NonNull Task<AuthResult> task) {
if(!task.isSuccessful())
{
Toast.makeText(MainActivity.this, "Sign in problem", Toast.LENGTH_LONG).show();
}
else
{
Intent intent = new Intent(MainActivity.this, AccountActivity.class);
startActivity(intent);
}
}
});
}
}
});
}
private void signIn() { /*Sign in to the app with Google Account*/
Intent signInIntent = mGoogleSignInClient.getSignInIntent();
startActivityForResult(signInIntent, RC_SIGN_IN);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// Result returned from launching the Intent from GoogleSignInClient.getSignInIntent(...);
if (requestCode == RC_SIGN_IN) {
// The Task returned from this call is always completed, no need to attach
// a listener.
Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
try{
GoogleSignInAccount account = task.getResult(ApiException.class);
firebaseAuthWithGoogle(account);
}
catch(ApiException e){
Log.w(TAG, "Google Sin in Failed");
}
}
}
private void firebaseAuthWithGoogle(GoogleSignInAccount acct)
{
Log.d(TAG, "firebaseAuthWithGoogle:" + acct.getId());
AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
mAuth.signInWithCredential(credential)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>()
{
#Override
public void onComplete(#NonNull Task<AuthResult> task)
{
if(task.isSuccessful())
{
Log.d(TAG, "signInWithCredential: success");
FirebaseUser user = mAuth.getCurrentUser();
updateUI(user);
}
else
{
Log.w(TAG, "signInWithCredential: failure", task.getException()); /*In case of unsuccessful login*/
Toast.makeText(MainActivity.this, "You are not able to log in to Google", Toast.LENGTH_LONG).show();
//updateUI(null);
}
}
});
}
private void updateUI(FirebaseUser user) /*In case of successful registration*/
{
GoogleSignInAccount acct = GoogleSignIn.getLastSignedInAccount(getApplicationContext());
if (acct != null) {
String personName = acct.getDisplayName();
String personGivenName = acct.getGivenName();
String personFamilyName = acct.getFamilyName();
String personEmail = acct.getEmail();
String personId = acct.getId();
Uri personPhoto = acct.getPhotoUrl();
Toast.makeText(this, "Name of User : " + personName + "UserId is : " + personId, Toast.LENGTH_LONG);
Intent intent = new Intent(this, AccountActivity.class);
intent.putExtra("personPhoto", personPhoto.toString());
startActivity(intent);
}
}
Here is the AccountActivity code:
public class AccountActivity extends AppCompatActivity {
private GoogleSignInClient mGoogleSignInClient;
private FirebaseAuth mAuth;
private FirebaseAuth.AuthStateListener mAuthStateListener;
private CardView signOut;
private CardView ratingTable;
private CardView settings;
private CardView map;
private CardView favoritePlaces;
DatabaseReference databaseReference;
FirebaseDatabase database;
List<User> users;
CollapsingToolbarLayout collapsingToolbarLayout;
String photoString="No photo";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_account);
mAuth = FirebaseAuth.getInstance();
signOut = (CardView) findViewById(R.id.logout);
ratingTable = (CardView) findViewById(R.id.rating);
settings = (CardView)findViewById(R.id.settings);
map = (CardView) findViewById(R.id.map);
favoritePlaces = (CardView)findViewById(R.id.favorite);
database = FirebaseDatabase.getInstance();
databaseReference = database.getReference();
users = new ArrayList<User>();
collapsingToolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.collaps);
if(mAuth.getCurrentUser().getDisplayName()!=null)
{
Intent i = getIntent();
photoString = i.getStringExtra("personPhoto");
}
databaseReference.child("user").addValueEventListener(new ValueEventListener() { /*A new user is registered in the database*/
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
Iterable<DataSnapshot> children = dataSnapshot.getChildren();
for (DataSnapshot child : children) {
User user = child.getValue(User.class);
users.add(user);
}
if (!findUser()) /*If the user is not found, this is a new user and must be registered*/
addUser();
showName(); /*A user-specific message*/
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken(getString(R.string.default_web_client_id))
.requestEmail()
.build();
mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
signOut.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(mAuth.getCurrentUser().getDisplayName()!=null)
{
mGoogleSignInClient.signOut();
//Intent intent = new Intent(AccountActivity.this, MainActivity.class);
// startActivity(intent);
Intent i = getBaseContext().getPackageManager().getLaunchIntentForPackage(getBaseContext().getPackageName());
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
}
else
{
mAuth.signOut();
Intent i = getBaseContext().getPackageManager().getLaunchIntentForPackage(getBaseContext().getPackageName());
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
}
}
});
settings.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(AccountActivity.this, SettingsActivity.class);
startActivity(intent);
}
});
map.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(AccountActivity.this, MapsActivity.class);
startActivity(intent);
}
});
favoritePlaces.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(AccountActivity.this, favoritePlacesActivity.class);
startActivity(intent);
}
});
ratingTable.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(AccountActivity.this, RatingTableActivity.class);
startActivity(intent);
}
});
}
private void showName() /*A user-specific message*/
{
String name = "";
String userId = mAuth.getUid();
for (User tmpUser : users) {
if (userId.equals(tmpUser.getUserId()))
{
name = tmpUser.getUserName();
break;
}
}
collapsingToolbarLayout.setTitle("Hi " + name);
}
private boolean findUser() /*Check if a logged-on user is already registered in the database*/
{
FirebaseUser user = mAuth.getCurrentUser();
String userId = mAuth.getUid();
for (User tmpUser : users) {
if (userId.equals(tmpUser.getUserId())) {
return true;
}
}
return false;
}
private void addUser() /*In case of registration from Google Account*/
{
String userId = mAuth.getUid();
if(mAuth.getCurrentUser().getDisplayName()!=null) /*In case of registration not from Google Account*/
{
databaseReference = FirebaseDatabase.getInstance().getReference("user");
FirebaseUser user = mAuth.getCurrentUser();
String userName = user.getDisplayName();
User newUser = User.getInstance(userId, userName, photoString);
databaseReference.child(userId).setValue(newUser);
}
else /*If the user is not registered the function registers it in the database*/
{
databaseReference = FirebaseDatabase.getInstance().getReference("user");
Intent i = getIntent();
String firstName = i.getStringExtra("firstName");
String lastName = i.getStringExtra("lastName");
User newUser = User.getInstance(userId, firstName + " " + lastName, photoString);
databaseReference.child(userId).setValue(newUser);
}
}
RegistrationActivity code:
public class RegistrationActivity extends AppCompatActivity {
EditText email_text;
EditText pass1;
EditText pass2;
EditText first;
EditText last;
Button registrate;
FirebaseAuth mAuth;
private ProgressDialog progressDialog;
private BottomNavigationView bottomNavigationItemView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_registration);
mAuth = FirebaseAuth.getInstance();
progressDialog = new ProgressDialog(this);
email_text = (EditText)findViewById(R.id.email);
pass1 = (EditText)findViewById(R.id.password1);
pass2 = (EditText)findViewById(R.id.password2);
first = (EditText)findViewById(R.id.first_name);
last = (EditText)findViewById(R.id.last_name);
registrate = (Button)findViewById(R.id.registrate);
bottomNavigationItemView = (BottomNavigationView)findViewById(R.id.navB) ;
bottomNavigationItemView.getMenu().getItem(1).setChecked(true);
bottomNavigationItemView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.Signin_menu: {
Intent intent = new Intent(RegistrationActivity.this, MainActivity.class);
startActivity(intent);
break;
}
}
return true;
}
});
registrate.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
final String email = email_text.getText().toString().trim();
String password1 = pass1.getText().toString().trim();
String password2 = pass2.getText().toString().trim();
final String first_name = first.getText().toString().trim();
final String last_name = last.getText().toString().trim();
boolean correctFlag=true;
/*All tests for input integrity*/
if(!password1.equals(password2))
{
Toast.makeText(RegistrationActivity.this, "The password does not match", Toast.LENGTH_LONG).show();
correctFlag=false;
}
if(password1.equals("") && password2.equals(""))
{
Toast.makeText(RegistrationActivity.this, "No password entered", Toast.LENGTH_LONG).show();
correctFlag=false;
}
if(email.equals("") || first_name.equals("") || last_name.equals(""))
{
Toast.makeText(RegistrationActivity.this, "One or more of the parameters are incorrect", Toast.LENGTH_LONG).show();
correctFlag=false;
}
if(correctFlag) /*There is no problem filling the fields*/
{
progressDialog.setMessage("Registrating user...");
progressDialog.show();
mAuth.createUserWithEmailAndPassword(email, password1).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
#Override
public void onComplete(#NonNull Task<AuthResult> task) {
if(task.isSuccessful())
{
Toast.makeText(RegistrationActivity.this, "Registered Succesfully", Toast.LENGTH_SHORT).show();
progressDialog.cancel();
Intent intent = new Intent(RegistrationActivity.this, AccountActivity.class);
intent.putExtra("firstName", first_name);
intent.putExtra("lastName", last_name);
startActivity(intent);
}
else
{
Toast.makeText(RegistrationActivity.this, "could not register. please try again", Toast.LENGTH_SHORT).show();
progressDialog.cancel();
}
}
});
}
}
});
}
You need to log out of GoogleSignInClient :
public void signOut() {
signOutBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestEmail()
.build();
GoogleSignInClient mGoogleSignInClient = GoogleSignIn.getClient(getContext(), gso);
mGoogleSignInClient.signOut();
FirebaseAuth.getInstance().signOut();
startActivity(new Intent(getContext(), LoginActivity.class));
}
});
}
I made an app that can let user log in and set marker on the google map and the marker connect to a chatroom that belongs to the user who set it.
I use firebase mail authentication ,the problem is that i can't get the uid and it's null,i tried a lot of ways,but it still didn't work.
Actually I can sotre my account data in firebase in createActivity with uid and it work,but when I switch to other activity ,the uid became null,I ask this before and someone told me to use this code:
Intent intent = new Intent(CreateActivity.this, MainActivity.class);
intent.putExtra("uid", currentUid);
startActivity(intent);
But it doesn't work.
can someone please help me find where is the problem ,here is my relative code:
LoginActivity:
public void login(View v){
final EditText edUserid = (EditText) findViewById(R.id.eduser);
final EditText edPass = (EditText) findViewById(R.id.edpass);
final String email = edUserid.getText().toString();
final String password = edPass.getText().toString();
if (TextUtils.isEmpty(email)) {
Toast.makeText(getApplicationContext(), "請輸入電子郵件!", Toast.LENGTH_SHORT).show();
return;
}
if (TextUtils.isEmpty(password)) {
Toast.makeText(getApplicationContext(), "請輸入密碼", Toast.LENGTH_SHORT).show();
return;
}
//authenticate user
auth.signInWithEmailAndPassword(email, password)
.addOnCompleteListener(LoginActivity.this, new OnCompleteListener<AuthResult>() {
#Override
public void onComplete(#NonNull Task<AuthResult> task) {
// If sign in fails, display a message to the user. If sign in succeeds
// the auth state listener will be notified and logic to handle the
// signed in user can be handled in the listener.
if (!task.isSuccessful()) {
// there was an error
if (password.length() < 6) {
edUserid.setError("密碼太短，請輸入超過6個字元!");
} else {
Toast.makeText(LoginActivity.this, "登入失敗", Toast.LENGTH_LONG).show();
}
} else {
Toast.makeText(getApplicationContext(),"登入成功",Toast.LENGTH_LONG).show();
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
auth = FirebaseAuth.getInstance();
FirebaseUser user = auth.getCurrentUser();
String currentUid = user.getUid();
intent.putExtra("uid", currentUid);
startActivity(intent);
finish();
}
}
});
}
CreateActivity:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_create);
auth = FirebaseAuth.getInstance();
FirebaseDatabase database = FirebaseDatabase.getInstance();
final DatabaseReference myRef = database.getReference();
myRef.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
public void create(View v){
EditText Edcount = (EditText)findViewById(R.id.edcount);
EditText Edpass = (EditText)findViewById(R.id.edpass);
EditText Eduser = (EditText)findViewById(R.id.userid);
EditText Edpassag = (EditText)findViewById(R.id.edpassag);
final String email = Edcount.getText().toString().trim();
final String id = Eduser.getText().toString().trim();
final String password = Edpass.getText().toString().trim();
String password2 = Edpassag.getText().toString();
if (TextUtils.isEmpty(email)) {
Toast.makeText(getApplicationContext(), "請輸入電子郵件!", Toast.LENGTH_SHORT).show();
return;
}
if (TextUtils.isEmpty(id)) {
Toast.makeText(getApplicationContext(), "請輸入用戶名!", Toast.LENGTH_SHORT).show();
return;
}
if (TextUtils.isEmpty(password)) {
Toast.makeText(getApplicationContext(), "請輸入密碼!", Toast.LENGTH_SHORT).show();
return;
}
if (password.length() < 6) {
Toast.makeText(getApplicationContext(), "密碼太短，請輸入超過6個字元!", Toast.LENGTH_SHORT).show();
return;
}
if(!password.equals(password2)){
Toast.makeText(getApplicationContext(), "密碼前後不符!", Toast.LENGTH_SHORT).show();
return;
}
auth.createUserWithEmailAndPassword(email, password)
.addOnCompleteListener(CreateActivity.this, new OnCompleteListener<AuthResult>() {
public void onComplete( Task<AuthResult> task) {
Toast.makeText(CreateActivity.this, "創建成功，歡迎使用SeeDate", Toast.LENGTH_SHORT).show();
// If sign in fails, display a message to the user. If sign in succeeds
// the auth state listener will be notified and logic to handle the
// signed in user can be handled in the listener.
if (!task.isSuccessful()) {
Toast.makeText(CreateActivity.this, "認證失敗或帳號已存在" ,
Toast.LENGTH_SHORT).show();
} else {
FirebaseDatabase database = FirebaseDatabase.getInstance();
FirebaseUser user = auth.getCurrentUser();
String currentUid = user.getUid();
DatabaseReference myRef = database.getReference("Contacts/" + currentUid);
ContactInfo contact1 = new ContactInfo(email,id,password);
myRef.setValue(contact1);//將會員資料寫入FIREBASE
Intent intent = new Intent(CreateActivity.this, MainActivity.class);
intent.putExtra("uid", currentUid);
startActivity(intent);
finish();
}
}
});
}
}
MainActivity:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
auth = FirebaseAuth.getInstance();
//get current user
authListener = new FirebaseAuth.AuthStateListener() {
#Override
public void onAuthStateChanged(#NonNull FirebaseAuth firebaseAuth) {
auth = FirebaseAuth.getInstance();
FirebaseUser user = auth.getCurrentUser();
if (user != null) {
// user auth state is changed - user is null
// launch login activity
userUID = getIntent().getStringExtra("uid");
}
else{
startActivity(new Intent(MainActivity.this, LoginActivity.class));
finish();
}
}
};
}
public void onStart() {
super.onStart();
auth.addAuthStateListener(authListener);
}
#Override
public void onStop() {
super.onStop();
if (authListener != null) {
auth.removeAuthStateListener(authListener);
}
}
}
MapFragment(store the marker part):
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (FirebaseAuth.getInstance().getCurrentUser() == null) {
Intent intent = new Intent(getActivity(),LoginActivity.class);
startActivity(intent);
}
else{
MainActivity a ;
a = (MainActivity)getActivity();
a.userUID = userUID1;
Log.d("TAG", userUID1);
// userUID = (String) getActivity().getIntent().getExtras().get("uid");
}
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
mview = inflater.inflate(R.layout.fragment_map, container, false);
return mview;
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mMapView = (MapView)mview.findViewById(R.id.mapView);
if(mMapView != null){
mMapView.onCreate(null);
mMapView.onResume();
mMapView.getMapAsync(this);
mFirebaseDatabase = FirebaseDatabase.getInstance();
mFirebaseRef = mFirebaseDatabase.getReference("Map/" + userUID1);
mFirebaseRef.addChildEventListener(new ChildEventListener() {
#Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
LatLng myLatLon = dataSnapshot.getValue(FirebaseMarker.class).toLatLng();
// stash the key in the title, for recall later
Marker myMarker = mgoogleMap.addMarker(new MarkerOptions()
.position(myLatLon).draggable(true).icon(BitmapDescriptorFactory.fromResource(R.drawable.seedloc2)).title(dataSnapshot.getKey()));
// cache the marker locally
markers.put(dataSnapshot.getKey(), myMarker);
}
#Override
public void onChildChanged(DataSnapshot dataSnapshot, String s) {
LatLng myLatLon = dataSnapshot.getValue(FirebaseMarker.class).toLatLng();
// Move markers on the map if changed on Firebase
Marker changedMarker = markers.get(dataSnapshot.getKey());
changedMarker.setPosition(myLatLon);
}
#Override
public void onChildRemoved(DataSnapshot dataSnapshot) {
}
#Override
public void onChildMoved(DataSnapshot dataSnapshot, String s) {
Marker deadMarker = markers.get(dataSnapshot.getKey());
deadMarker.remove();
markers.remove(dataSnapshot.getKey());
Log.v(TAG, "moved !" + dataSnapshot.getValue());
}
#Override
public void onCancelled(DatabaseError databaseError) {
Log.v(TAG, "canceled!" + databaseError.getMessage());
}
});
}
}
#Override
public void onMapReady(final GoogleMap googleMap) {
MapsInitializer.initialize(getContext());
mgoogleMap = googleMap;
googleMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
#Override
public boolean onMarkerClick(Marker marker) {
// Remove map markers from Firebase when tapped
FirebaseDatabase.getInstance().getReference();
// String user = ContactInfo.getAccount();
CustomInfoWindowAdapter adapter = new CustomInfoWindowAdapter(MapFragment.this);
googleMap.setInfoWindowAdapter(adapter);
marker.setTitle("的種子");
marker.setSnippet("點選聊天");
marker.showInfoWindow();
// Intent intent = new Intent(getActivity(),ChatActivity.class);
// startActivity(intent);
return true;
}
});
googleMap.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
#Override
public void onMapClick(final LatLng latLng) {
// Taps create new markers in Firebase
// This works because jackson can figure out LatLng
mFirebaseRef.push().setValue(new FirebaseMarker(latLng));
}
});
mgoogleMap.setOnMarkerDragListener(new GoogleMap.OnMarkerDragListener() {
#Override
public void onMarkerDragStart(Marker marker) {
// not implemented
}
#Override
public void onMarkerDrag(Marker marker) {
// not implemented
}
#Override
public void onMarkerDragEnd(Marker marker) {
mFirebaseRef.child(marker.getTitle()).setValue(new FirebaseMarker(marker.getPosition()));
}
});
}
}
If you need more information,I'll update it.
You need to change this line:
userUID = getIntent().getStringExtra("uid");
with this line:
String userUID = user.getUid();
Log.d("TAG", userUID);
Hope it helps.
If I donot miss understand, the MapFragment is a part of your MainActivity. Your problem comes from this:
authListener = new FirebaseAuth.AuthStateListener() {
#Override
public void onAuthStateChanged(#NonNull FirebaseAuth firebaseAuth) {
auth = FirebaseAuth.getInstance();
FirebaseUser user = auth.getCurrentUser();
if (user != null) {
userUID = getIntent().getStringExtra("uid");
}
else{
startActivity(new Intent(MainActivity.this, LoginActivity.class));
finish();
}
}
};
As I can see, your userUID is null until there's an onAuthStateChanged changed. To sovlve it, I suggest to move this line to the onCreate of MainActiviy as your uid is passed to Intent in previous activity.