I have an application with two different types of users one as Teacher and the Second a normal user. if a normal member logs in, he will go to normal_memberActivity and if he's a Teacher member, he'll go to Teacher_memberActivity. How do I do this in loginActivity?
My Firebase structure:
this is database firebase rules
{
"rules": {
".read": true,
".write":true}
}
i have been solving this problem for a week. I'm sorry to say the solution proposed above is kinda misleading. Thus, i have a better solution for this, and its 101% workable !
First, this is my real-time database in Firebase: I created a child "type" for each type of users created. Then, i set seller's account as 1 and buyer's account as 2 inside the "type" child's value.
Second, after i successfully verified the login details. At that particular moment, i use the firebase real-time datasnapshot to pull the type value based on the current user's UID, then i verified whether is the value is equal to 1 or 2. Finally i able to start the activity based on the type of user.
Account Create code:
private void registerUser() {
progressDialog = new ProgressDialog(this);
String email = editTextEmail.getText().toString().trim();
String password = editTextPassword.getText().toString().trim();
if (TextUtils.isEmpty(email)) {
Toast.makeText(this, "Please Enter Emailsss", Toast.LENGTH_SHORT).show();
return;
}
if (TextUtils.isEmpty(password)) {
Toast.makeText(this, "Please Enter Your PASSWORDS", Toast.LENGTH_SHORT).show();
return;
}
progressDialog.setMessage("Registering User Statement..");
progressDialog.show();
//Firebase authentication (account save)
firebaseAuth.createUserWithEmailAndPassword(email, password)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()) {
//user already logged in
//start the activity
finish();
onAuthSuccess(task.getResult().getUser());
// startActivity(new Intent(getApplicationContext(), MainActivity.class));
} else {
Toast.makeText(signupActivity.this, "Could not registered , bullcraps", Toast.LENGTH_SHORT).show();
}
progressDialog.dismiss();
}
});
}
private void onAuthSuccess(FirebaseUser user) {
//String username = usernameFromEmail(user.getEmail());
// Write new user
writeNewUser(user.getUid(), toggle_val, user.getEmail());
// Go to MainActivity
startActivity(new Intent(signupActivity.this, MainActivity.class));
finish();
}
private void writeNewUser(String userId, int type, String email) {
User user = new User(Integer.toString(type), email);
if (type == 1){
mDatabase.child("users").child(userId).setValue(user);
}
else {
mDatabase.child("users").child(userId).setValue(user);
}
}
if (toggleBut.isChecked()){
toggle_val = 2;
//Toast.makeText(signupActivity.this, "You're Buyer", Toast.LENGTH_SHORT).show();
}
else{
toggle_val = 1;
//Toast.makeText(signupActivity.this, "You're Seller", Toast.LENGTH_SHORT).show();
}
Sign in Account code:
private void userLogin () {
String email = editTextEmail.getText().toString().trim();
String password = editTextPassword.getText().toString().trim();
if(TextUtils.isEmpty(email)){
Toast.makeText(this, "Please Enter Emailsss", Toast.LENGTH_SHORT).show();
return;
}
if(TextUtils.isEmpty(password)){
Toast.makeText(this, "Please Enter Your PASSWORDS", Toast.LENGTH_SHORT).show();
return;
}
progressDialog.setMessage("Login....");
progressDialog.show();
firebaseAuth.signInWithEmailAndPassword(email,password)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
progressDialog.dismiss();
if(task.isSuccessful()){
onAuthSuccess(task.getResult().getUser());
//Toast.makeText(signinActivity.this, "Successfully Signed In", Toast.LENGTH_SHORT).show();
}
else {
Toast.makeText(signinActivity.this, "Could not login, password or email wrong , bullcraps", Toast.LENGTH_SHORT).show();
}
}
});
}
private void onAuthSuccess(FirebaseUser user) {
//String username = usernameFromEmail(user.getEmail())
if (user != null) {
//Toast.makeText(signinActivity.this, user.getUid(), Toast.LENGTH_SHORT).show();
ref = FirebaseDatabase.getInstance().getReference().child("users").child(user.getUid()).child("type");
ref.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
String value = dataSnapshot.getValue(String.class);
//for(DataSnapshot snapshot : dataSnapshot.getChildren()){
// Toast.makeText(signinActivity.this, value, Toast.LENGTH_SHORT).show();
if(Integer.parseInt(value) == 1) {
//String jason = (String) snapshot.getValue();
//Toast.makeText(signinActivity.this, jason, Toast.LENGTH_SHORT).show();
startActivity(new Intent(signinActivity.this, MainActivity.class));
Toast.makeText(signinActivity.this, "You're Logged in as Seller", Toast.LENGTH_SHORT).show();
finish();
} else {
startActivity(new Intent(signinActivity.this, BuyerActivity.class));
Toast.makeText(signinActivity.this, "You're Logged in as Buyer", Toast.LENGTH_SHORT).show();
finish();
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
}
I suggest you have this kind of structure in your database
users
---details...
---type
The type key would now contain whether your user is normal or a teacher. Now using FirebaseAuthentication which I think you already have integrated in your app, you could use:
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
to get the currently logged in user. With that, you can now use:
String uid = user.getUid();
in order to get the UID of the currently logged in user which I think you have used as the key for your users.
Now with the UID ready, you could use a Firebase query to get the type of that specific user and go to the specific Activity based on their type.
Query userQuery = FirebaseDatabase.getInstance().getReference()
.child("users").orderByKey().equalTo(uid);
userQuery.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
String type = dataSnapshot.child("type").getValue().toString();
if(type.equals("Teacher"){
//Go to TeacherMemberActivity
} else {
//Go to NormalMemberActivity
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
You can verify what group a user belongs(teacher or user) by attaching an event listener inside the FirebaseAuth.AuthStateListener and redirecting the user to the appropriate activity as follows
private FirebaseAuth.AuthStateListener mAuthListener;
private DatabaseReference ref;
mAuthListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null) {
ref = FirebaseDatabase.getInstance().getReference().child("hire-teachers").child("teachers");
ref.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
for(DataSnapshot snapshot : dataSnapshot.getChildren()){
if(FirebaseAuth.getInstance().getCurrentUser().getUid().equals(snapshot.getKey())){
startActivity(new Intent(SignInActivity.this, Teacher_memberActivity.class));
}
}
startActivity(new Intent(SignInActivity.this, Normal_memberActivity.class));
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
} else {
// User is signed out
}
// ...
}
};
In the above implementation of the Firebase API, I am checking to see if the user is a teacher. if true then start the Teacher_memberActivity if not, start the Normal_memberActivity.
Here is the new code:
private FirebaseAuth.AuthStateListener mAuthListener;
private DatabaseReference ref;
mAuthListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null) {
ref = FirebaseDatabase.getInstance().getReference().child("hire-teachers").child("teachers");
ref.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
Boolean boolean = false;
for(DataSnapshot snapshot : dataSnapshot.getChildren()){
if(FirebaseAuth.getInstance().getCurrentUser().getUid().equals(snapshot.getKey())){
boolean = true;
}
}
if(boolean){
startActivity(new Intent(SignInActivity.this, Teacher_memberActivity.class));
}else{
startActivity(new Intent(SignInActivity.this, Normal_memberActivity.class));
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
} else {
// User is signed out
}
// ...
}
};