Mixing
One time login in app - FirebaseAuth
4
I'm working on an app that uses Firebase authentication to sign in users through phone number. I want to add a functionality such that there is only one-time login for the user, i.e. even if the user kills the app and starts it again, he should be logged in. Also, I don't want to add a logout feature. What can be done for this?
java
android firebase firebase-authentication edited Jun 16 '18 at 10:05
Alex Mamo
44.6k82862
asked Jun 16 '18 at 7:28
Einzig7Einzig7
490418
add a comment |
4
I'm working on an app that uses Firebase authentication to sign in users through phone number. I want to add a functionality such that there is only one-time login for the user, i.e. even if the user kills the app and starts it again, he should be logged in. Also, I don't want to add a logout feature. What can be done for this?
java
android firebase firebase-authentication edited Jun 16 '18 at 10:05
Alex Mamo
44.6k82862
asked Jun 16 '18 at 7:28
Einzig7Einzig7
490418
add a comment |
4
4
4
2
I'm working on an app that uses Firebase authentication to sign in users through phone number. I want to add a functionality such that there is only one-time login for the user, i.e. even if the user kills the app and starts it again, he should be logged in. Also, I don't want to add a logout feature. What can be done for this?
java
android firebase firebase-authentication edited Jun 16 '18 at 10:05
Alex Mamo
44.6k82862
asked Jun 16 '18 at 7:28
Einzig7Einzig7
490418
I'm working on an app that uses Firebase authentication to sign in users through phone number. I want to add a functionality such that there is only one-time login for the user, i.e. even if the user kills the app and starts it again, he should be logged in. Also, I don't want to add a logout feature. What can be done for this?
java
android firebase firebase-authentication java
android firebase firebase-authentication edited Jun 16 '18 at 10:05
Alex Mamo
44.6k82862
asked Jun 16 '18 at 7:28
Einzig7Einzig7
490418
edited Jun 16 '18 at 10:05
Alex Mamo
44.6k82862
asked Jun 16 '18 at 7:28
Einzig7Einzig7
490418
edited Jun 16 '18 at 10:05
Alex Mamo
44.6k82862
edited Jun 16 '18 at 10:05
Alex Mamo
44.6k82862
edited Jun 16 '18 at 10:05
Alex Mamo
44.6k82862
44.6k82862
asked Jun 16 '18 at 7:28
Einzig7Einzig7
490418
asked Jun 16 '18 at 7:28
Einzig7Einzig7
490418
asked Jun 16 '18 at 7:28
Einzig7Einzig7
490418
490418
add a comment |
add a comment |
3 Answers
3
active
oldest
votes
6
The simplest way to achieve this is to use a listener. Let's assume you have two activities, the LoginActivity and the MainActivity. The listener that can be created in the LoginActivity should look like this:
FirebaseAuth.AuthStateListener authStateListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser firebaseUser = firebaseAuth.getCurrentUser();
if (firebaseUser != null) {
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
finish();
}
}
};
This basically means that if the user is logged in, skip the LoginActivity and go to the MainActivity.
Instantiate the FirebaseAuth object:
FirebaseAuth firebaseAuth = FirebaseAuth.getInstance();
And start listening for changes in your onStart() method like this:
@Override
protected void onStart() {
super.onStart();
firebaseAuth.addAuthStateListener(authStateListener);
}
In the MainActivity, you should do the same thing:
FirebaseAuth.AuthStateListener authStateListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser firebaseUser = firebaseAuth.getCurrentUser();
if (firebaseUser == null) {
Intent intent = new Intent(MainActivity.this, LoginActivity.class);
startActivity(intent);
}
}
};
Which basically means that if the user is not logged in, skip the MainActivity and go to the LoginActivity. In this activity you should do the same thing as in the LoginActivity, you should start listening for changes in the onStart().
In both activities, don't forget to remove the listener in the moment in which is not needed anymore. So add the following line of code in your onStop() method:
@Override
protected void onStop() {
super.onStop();
firebaseAuth.removeAuthStateListener(authStateListener);
}
edited Nov 28 '18 at 14:50
Frank van Puffelen
238k29382408
answered Jun 16 '18 at 10:04
Alex MamoAlex Mamo
44.6k82862
Have you also tried my solution above?
– Alex Mamo
Jun 18 '18 at 5:22
Yes, it worked! But I think shared preferences too would be good to use.
– Einzig7
Jun 19 '18 at 12:32
It would be if don't care about app uninstall.SharedPreferencesdo not persist across app uninstall while Firebase keeps authentication data in a back-up even if the application is deleted. So in this case, if you uninstall the app, there will be no loss of informations. It's up to you to decide which solution is better for you.
– Alex Mamo
Jun 19 '18 at 12:43
Thanks a lot, Alex! Actually I'm making an app for visually impaired people, and using now I realize that using authStateListener will be the right decision.
– Einzig7
Jun 19 '18 at 12:54
Glad I could help @Einzig7 cheers!
– Alex Mamo
Jun 19 '18 at 12:57
|
show 10 more comments
2
You can save user login session in shared Preference
Do this when your login got Login Success
SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", Activity.MODE_PRIVATE);
Editor editor = pref.edit();
editor.putBoolean("key_name", true); // Storing boolean - true/false
editor.commit();
and When Your apps is Starts (like Splash or login Page) use this
SharedPreferences sp=this.getSharedPreferences("MyPref", Context.MODE_PRIVATE);
boolean b = sp.getBoolean("key_name", false);
if(b==true){
//User Already Logged in skip login page and continue to next process
}else{
//User is Not logged in, show login Form
}
It will works for you.
answered Jun 16 '18 at 8:10
Sandeep ParishSandeep Parish
1,1421214
what is the strFile parameter here?
– Einzig7
Jun 16 '18 at 8:25
It is the preference Name, i forget to change it ,now i updated answer @Einzig7
– Sandeep Parish
Jun 16 '18 at 8:28
Also, I'm getting an error here for the getBoolean function, it says that getBoolean has two parameters, a string and a boolean.
– Einzig7
Jun 16 '18 at 8:33
It wants a default value set it false
– Sandeep Parish
Jun 16 '18 at 8:40
It worked! Thanks :)
– Einzig7
Jun 16 '18 at 9:05
|
show 1 more comment
0
This is from my working code from logging class:
private void LoginUserAccount(String email, String password)
{
if (TextUtils.isEmpty(email))
{
Toast.makeText(ResponseStartPage.this, "Please write Your Email", Toast.LENGTH_SHORT).show();
}
if (TextUtils.isEmpty(password))
{
Toast.makeText(ResponseStartPage.this, "Please write Your password", Toast.LENGTH_SHORT).show();
}
else
{
loadingBar.setTitle("Login Account");
loadingBar.setMessage("Please wait for verification...");
loadingBar.show();
mAuth.signInWithEmailAndPassword(email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task)
{
if (task.isSuccessful())
{
String online_user_id = mAuth.getCurrentUser().getUid();
String DeviceToken = FirebaseInstanceId.getInstance().getToken();
usersReference.child(online_user_id).child("device_token").setValue(DeviceToken)
.addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid)
{
Intent mainIntent = new Intent(ResponseStartPage.this, ResponseMainActivity.class);
mainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(mainIntent);
finish();
}
});
}
else
{
Toast.makeText(ResponseStartPage.this, "Please Check your email and password", Toast.LENGTH_SHORT).show();
}
loadingBar.dismiss();
}
});
}
}
answered Jun 16 '18 at 8:17
JacekJacek
216
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
6
The simplest way to achieve this is to use a listener. Let's assume you have two activities, the LoginActivity and the MainActivity. The listener that can be created in the LoginActivity should look like this:
FirebaseAuth.AuthStateListener authStateListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser firebaseUser = firebaseAuth.getCurrentUser();
if (firebaseUser != null) {
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
finish();
}
}
};
This basically means that if the user is logged in, skip the LoginActivity and go to the MainActivity.
Instantiate the FirebaseAuth object:
FirebaseAuth firebaseAuth = FirebaseAuth.getInstance();
And start listening for changes in your onStart() method like this:
@Override
protected void onStart() {
super.onStart();
firebaseAuth.addAuthStateListener(authStateListener);
}
In the MainActivity, you should do the same thing:
FirebaseAuth.AuthStateListener authStateListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser firebaseUser = firebaseAuth.getCurrentUser();
if (firebaseUser == null) {
Intent intent = new Intent(MainActivity.this, LoginActivity.class);
startActivity(intent);
}
}
};
Which basically means that if the user is not logged in, skip the MainActivity and go to the LoginActivity. In this activity you should do the same thing as in the LoginActivity, you should start listening for changes in the onStart().
In both activities, don't forget to remove the listener in the moment in which is not needed anymore. So add the following line of code in your onStop() method:
@Override
protected void onStop() {
super.onStop();
firebaseAuth.removeAuthStateListener(authStateListener);
}
edited Nov 28 '18 at 14:50
Frank van Puffelen
238k29382408
answered Jun 16 '18 at 10:04
Alex MamoAlex Mamo
44.6k82862
Have you also tried my solution above?
– Alex Mamo
Jun 18 '18 at 5:22
Yes, it worked! But I think shared preferences too would be good to use.
– Einzig7
Jun 19 '18 at 12:32
It would be if don't care about app uninstall.SharedPreferencesdo not persist across app uninstall while Firebase keeps authentication data in a back-up even if the application is deleted. So in this case, if you uninstall the app, there will be no loss of informations. It's up to you to decide which solution is better for you.
– Alex Mamo
Jun 19 '18 at 12:43
Thanks a lot, Alex! Actually I'm making an app for visually impaired people, and using now I realize that using authStateListener will be the right decision.
– Einzig7
Jun 19 '18 at 12:54
Glad I could help @Einzig7 cheers!
– Alex Mamo
Jun 19 '18 at 12:57
|
show 10 more comments
6
The simplest way to achieve this is to use a listener. Let's assume you have two activities, the LoginActivity and the MainActivity. The listener that can be created in the LoginActivity should look like this:
FirebaseAuth.AuthStateListener authStateListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser firebaseUser = firebaseAuth.getCurrentUser();
if (firebaseUser != null) {
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
finish();
}
}
};
This basically means that if the user is logged in, skip the LoginActivity and go to the MainActivity.
Instantiate the FirebaseAuth object:
FirebaseAuth firebaseAuth = FirebaseAuth.getInstance();
And start listening for changes in your onStart() method like this:
@Override
protected void onStart() {
super.onStart();
firebaseAuth.addAuthStateListener(authStateListener);
}
In the MainActivity, you should do the same thing:
FirebaseAuth.AuthStateListener authStateListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser firebaseUser = firebaseAuth.getCurrentUser();
if (firebaseUser == null) {
Intent intent = new Intent(MainActivity.this, LoginActivity.class);
startActivity(intent);
}
}
};
Which basically means that if the user is not logged in, skip the MainActivity and go to the LoginActivity. In this activity you should do the same thing as in the LoginActivity, you should start listening for changes in the onStart().
In both activities, don't forget to remove the listener in the moment in which is not needed anymore. So add the following line of code in your onStop() method:
@Override
protected void onStop() {
super.onStop();
firebaseAuth.removeAuthStateListener(authStateListener);
}
edited Nov 28 '18 at 14:50
Frank van Puffelen
238k29382408
answered Jun 16 '18 at 10:04
Alex MamoAlex Mamo
44.6k82862
Have you also tried my solution above?
– Alex Mamo
Jun 18 '18 at 5:22
Yes, it worked! But I think shared preferences too would be good to use.
– Einzig7
Jun 19 '18 at 12:32
It would be if don't care about app uninstall.SharedPreferencesdo not persist across app uninstall while Firebase keeps authentication data in a back-up even if the application is deleted. So in this case, if you uninstall the app, there will be no loss of informations. It's up to you to decide which solution is better for you.
– Alex Mamo
Jun 19 '18 at 12:43
Thanks a lot, Alex! Actually I'm making an app for visually impaired people, and using now I realize that using authStateListener will be the right decision.
– Einzig7
Jun 19 '18 at 12:54
Glad I could help @Einzig7 cheers!
– Alex Mamo
Jun 19 '18 at 12:57
|
show 10 more comments
6
6
6
The simplest way to achieve this is to use a listener. Let's assume you have two activities, the LoginActivity and the MainActivity. The listener that can be created in the LoginActivity should look like this:
FirebaseAuth.AuthStateListener authStateListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser firebaseUser = firebaseAuth.getCurrentUser();
if (firebaseUser != null) {
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
finish();
}
}
};
This basically means that if the user is logged in, skip the LoginActivity and go to the MainActivity.
Instantiate the FirebaseAuth object:
FirebaseAuth firebaseAuth = FirebaseAuth.getInstance();
And start listening for changes in your onStart() method like this:
@Override
protected void onStart() {
super.onStart();
firebaseAuth.addAuthStateListener(authStateListener);
}
In the MainActivity, you should do the same thing:
FirebaseAuth.AuthStateListener authStateListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser firebaseUser = firebaseAuth.getCurrentUser();
if (firebaseUser == null) {
Intent intent = new Intent(MainActivity.this, LoginActivity.class);
startActivity(intent);
}
}
};
Which basically means that if the user is not logged in, skip the MainActivity and go to the LoginActivity. In this activity you should do the same thing as in the LoginActivity, you should start listening for changes in the onStart().
In both activities, don't forget to remove the listener in the moment in which is not needed anymore. So add the following line of code in your onStop() method:
@Override
protected void onStop() {
super.onStop();
firebaseAuth.removeAuthStateListener(authStateListener);
}
edited Nov 28 '18 at 14:50
Frank van Puffelen
238k29382408
answered Jun 16 '18 at 10:04
Alex MamoAlex Mamo
44.6k82862
The simplest way to achieve this is to use a listener. Let's assume you have two activities, the LoginActivity and the MainActivity. The listener that can be created in the LoginActivity should look like this:
FirebaseAuth.AuthStateListener authStateListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser firebaseUser = firebaseAuth.getCurrentUser();
if (firebaseUser != null) {
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
finish();
}
}
};
This basically means that if the user is logged in, skip the LoginActivity and go to the MainActivity.
Instantiate the FirebaseAuth object:
FirebaseAuth firebaseAuth = FirebaseAuth.getInstance();
And start listening for changes in your onStart() method like this:
@Override
protected void onStart() {
super.onStart();
firebaseAuth.addAuthStateListener(authStateListener);
}
In the MainActivity, you should do the same thing:
FirebaseAuth.AuthStateListener authStateListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser firebaseUser = firebaseAuth.getCurrentUser();
if (firebaseUser == null) {
Intent intent = new Intent(MainActivity.this, LoginActivity.class);
startActivity(intent);
}
}
};
Which basically means that if the user is not logged in, skip the MainActivity and go to the LoginActivity. In this activity you should do the same thing as in the LoginActivity, you should start listening for changes in the onStart().
In both activities, don't forget to remove the listener in the moment in which is not needed anymore. So add the following line of code in your onStop() method:
@Override
protected void onStop() {
super.onStop();
firebaseAuth.removeAuthStateListener(authStateListener);
}
edited Nov 28 '18 at 14:50
Frank van Puffelen
238k29382408
answered Jun 16 '18 at 10:04
Alex MamoAlex Mamo
44.6k82862
edited Nov 28 '18 at 14:50
Frank van Puffelen
238k29382408
edited Nov 28 '18 at 14:50
Frank van Puffelen
238k29382408
edited Nov 28 '18 at 14:50
Frank van Puffelen
238k29382408
238k29382408
answered Jun 16 '18 at 10:04
Alex MamoAlex Mamo
44.6k82862
answered Jun 16 '18 at 10:04
Alex MamoAlex Mamo
44.6k82862
answered Jun 16 '18 at 10:04
Alex MamoAlex Mamo
44.6k82862
44.6k82862
Have you also tried my solution above?
– Alex Mamo
Jun 18 '18 at 5:22
Yes, it worked! But I think shared preferences too would be good to use.
– Einzig7
Jun 19 '18 at 12:32
It would be if don't care about app uninstall.SharedPreferencesdo not persist across app uninstall while Firebase keeps authentication data in a back-up even if the application is deleted. So in this case, if you uninstall the app, there will be no loss of informations. It's up to you to decide which solution is better for you.
– Alex Mamo
Jun 19 '18 at 12:43
Thanks a lot, Alex! Actually I'm making an app for visually impaired people, and using now I realize that using authStateListener will be the right decision.
– Einzig7
Jun 19 '18 at 12:54
Glad I could help @Einzig7 cheers!
– Alex Mamo
Jun 19 '18 at 12:57
|
show 10 more comments
Have you also tried my solution above?
– Alex Mamo
Jun 18 '18 at 5:22
Yes, it worked! But I think shared preferences too would be good to use.
– Einzig7
Jun 19 '18 at 12:32
It would be if don't care about app uninstall.SharedPreferencesdo not persist across app uninstall while Firebase keeps authentication data in a back-up even if the application is deleted. So in this case, if you uninstall the app, there will be no loss of informations. It's up to you to decide which solution is better for you.
– Alex Mamo
Jun 19 '18 at 12:43
Thanks a lot, Alex! Actually I'm making an app for visually impaired people, and using now I realize that using authStateListener will be the right decision.
– Einzig7
Jun 19 '18 at 12:54
Glad I could help @Einzig7 cheers!
– Alex Mamo
Jun 19 '18 at 12:57
Have you also tried my solution above?
– Alex Mamo
Jun 18 '18 at 5:22
Have you also tried my solution above?
– Alex Mamo
Jun 18 '18 at 5:22
Yes, it worked! But I think shared preferences too would be good to use.
– Einzig7
Jun 19 '18 at 12:32
Yes, it worked! But I think shared preferences too would be good to use.
– Einzig7
Jun 19 '18 at 12:32
It would be if don't care about app uninstall.
SharedPreferences do not persist across app uninstall while Firebase keeps authentication data in a back-up even if the application is deleted. So in this case, if you uninstall the app, there will be no loss of informations. It's up to you to decide which solution is better for you.– Alex Mamo
Jun 19 '18 at 12:43
It would be if don't care about app uninstall.
SharedPreferences do not persist across app uninstall while Firebase keeps authentication data in a back-up even if the application is deleted. So in this case, if you uninstall the app, there will be no loss of informations. It's up to you to decide which solution is better for you.– Alex Mamo
Jun 19 '18 at 12:43
Thanks a lot, Alex! Actually I'm making an app for visually impaired people, and using now I realize that using authStateListener will be the right decision.
– Einzig7
Jun 19 '18 at 12:54
Thanks a lot, Alex! Actually I'm making an app for visually impaired people, and using now I realize that using authStateListener will be the right decision.
– Einzig7
Jun 19 '18 at 12:54
Glad I could help @Einzig7 cheers!
– Alex Mamo
Jun 19 '18 at 12:57
Glad I could help @Einzig7 cheers!
– Alex Mamo
Jun 19 '18 at 12:57
|
show 10 more comments
2
You can save user login session in shared Preference
Do this when your login got Login Success
SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", Activity.MODE_PRIVATE);
Editor editor = pref.edit();
editor.putBoolean("key_name", true); // Storing boolean - true/false
editor.commit();
and When Your apps is Starts (like Splash or login Page) use this
SharedPreferences sp=this.getSharedPreferences("MyPref", Context.MODE_PRIVATE);
boolean b = sp.getBoolean("key_name", false);
if(b==true){
//User Already Logged in skip login page and continue to next process
}else{
//User is Not logged in, show login Form
}
It will works for you.
answered Jun 16 '18 at 8:10
Sandeep ParishSandeep Parish
1,1421214
what is the strFile parameter here?
– Einzig7
Jun 16 '18 at 8:25
It is the preference Name, i forget to change it ,now i updated answer @Einzig7
– Sandeep Parish
Jun 16 '18 at 8:28
Also, I'm getting an error here for the getBoolean function, it says that getBoolean has two parameters, a string and a boolean.
– Einzig7
Jun 16 '18 at 8:33
It wants a default value set it false
– Sandeep Parish
Jun 16 '18 at 8:40
It worked! Thanks :)
– Einzig7
Jun 16 '18 at 9:05
|
show 1 more comment
2
You can save user login session in shared Preference
Do this when your login got Login Success
SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", Activity.MODE_PRIVATE);
Editor editor = pref.edit();
editor.putBoolean("key_name", true); // Storing boolean - true/false
editor.commit();
and When Your apps is Starts (like Splash or login Page) use this
SharedPreferences sp=this.getSharedPreferences("MyPref", Context.MODE_PRIVATE);
boolean b = sp.getBoolean("key_name", false);
if(b==true){
//User Already Logged in skip login page and continue to next process
}else{
//User is Not logged in, show login Form
}
It will works for you.
answered Jun 16 '18 at 8:10
Sandeep ParishSandeep Parish
1,1421214
what is the strFile parameter here?
– Einzig7
Jun 16 '18 at 8:25
It is the preference Name, i forget to change it ,now i updated answer @Einzig7
– Sandeep Parish
Jun 16 '18 at 8:28
Also, I'm getting an error here for the getBoolean function, it says that getBoolean has two parameters, a string and a boolean.
– Einzig7
Jun 16 '18 at 8:33
It wants a default value set it false
– Sandeep Parish
Jun 16 '18 at 8:40
It worked! Thanks :)
– Einzig7
Jun 16 '18 at 9:05
|
show 1 more comment
2
2
2
You can save user login session in shared Preference
Do this when your login got Login Success
SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", Activity.MODE_PRIVATE);
Editor editor = pref.edit();
editor.putBoolean("key_name", true); // Storing boolean - true/false
editor.commit();
and When Your apps is Starts (like Splash or login Page) use this
SharedPreferences sp=this.getSharedPreferences("MyPref", Context.MODE_PRIVATE);
boolean b = sp.getBoolean("key_name", false);
if(b==true){
//User Already Logged in skip login page and continue to next process
}else{
//User is Not logged in, show login Form
}
It will works for you.
answered Jun 16 '18 at 8:10
Sandeep ParishSandeep Parish
1,1421214
You can save user login session in shared Preference
Do this when your login got Login Success
SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", Activity.MODE_PRIVATE);
Editor editor = pref.edit();
editor.putBoolean("key_name", true); // Storing boolean - true/false
editor.commit();
and When Your apps is Starts (like Splash or login Page) use this
SharedPreferences sp=this.getSharedPreferences("MyPref", Context.MODE_PRIVATE);
boolean b = sp.getBoolean("key_name", false);
if(b==true){
//User Already Logged in skip login page and continue to next process
}else{
//User is Not logged in, show login Form
}
It will works for you.
answered Jun 16 '18 at 8:10
Sandeep ParishSandeep Parish
1,1421214
edited Oct 6 '18 at 5:50
answered Jun 16 '18 at 8:10
Sandeep ParishSandeep Parish
1,1421214
answered Jun 16 '18 at 8:10
Sandeep ParishSandeep Parish
1,1421214
answered Jun 16 '18 at 8:10
Sandeep ParishSandeep Parish
1,1421214
1,1421214
what is the strFile parameter here?
– Einzig7
Jun 16 '18 at 8:25
It is the preference Name, i forget to change it ,now i updated answer @Einzig7
– Sandeep Parish
Jun 16 '18 at 8:28
Also, I'm getting an error here for the getBoolean function, it says that getBoolean has two parameters, a string and a boolean.
– Einzig7
Jun 16 '18 at 8:33
It wants a default value set it false
– Sandeep Parish
Jun 16 '18 at 8:40
It worked! Thanks :)
– Einzig7
Jun 16 '18 at 9:05
|
show 1 more comment
what is the strFile parameter here?
– Einzig7
Jun 16 '18 at 8:25
It is the preference Name, i forget to change it ,now i updated answer @Einzig7
– Sandeep Parish
Jun 16 '18 at 8:28
Also, I'm getting an error here for the getBoolean function, it says that getBoolean has two parameters, a string and a boolean.
– Einzig7
Jun 16 '18 at 8:33
It wants a default value set it false
– Sandeep Parish
Jun 16 '18 at 8:40
It worked! Thanks :)
– Einzig7
Jun 16 '18 at 9:05
what is the strFile parameter here?
– Einzig7
Jun 16 '18 at 8:25
what is the strFile parameter here?
– Einzig7
Jun 16 '18 at 8:25
It is the preference Name, i forget to change it ,now i updated answer @Einzig7
– Sandeep Parish
Jun 16 '18 at 8:28
It is the preference Name, i forget to change it ,now i updated answer @Einzig7
– Sandeep Parish
Jun 16 '18 at 8:28
Also, I'm getting an error here for the getBoolean function, it says that getBoolean has two parameters, a string and a boolean.
– Einzig7
Jun 16 '18 at 8:33
Also, I'm getting an error here for the getBoolean function, it says that getBoolean has two parameters, a string and a boolean.
– Einzig7
Jun 16 '18 at 8:33
It wants a default value set it false
– Sandeep Parish
Jun 16 '18 at 8:40
It wants a default value set it false
– Sandeep Parish
Jun 16 '18 at 8:40
It worked! Thanks :)
– Einzig7
Jun 16 '18 at 9:05
It worked! Thanks :)
– Einzig7
Jun 16 '18 at 9:05
|
show 1 more comment
0
This is from my working code from logging class:
private void LoginUserAccount(String email, String password)
{
if (TextUtils.isEmpty(email))
{
Toast.makeText(ResponseStartPage.this, "Please write Your Email", Toast.LENGTH_SHORT).show();
}
if (TextUtils.isEmpty(password))
{
Toast.makeText(ResponseStartPage.this, "Please write Your password", Toast.LENGTH_SHORT).show();
}
else
{
loadingBar.setTitle("Login Account");
loadingBar.setMessage("Please wait for verification...");
loadingBar.show();
mAuth.signInWithEmailAndPassword(email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task)
{
if (task.isSuccessful())
{
String online_user_id = mAuth.getCurrentUser().getUid();
String DeviceToken = FirebaseInstanceId.getInstance().getToken();
usersReference.child(online_user_id).child("device_token").setValue(DeviceToken)
.addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid)
{
Intent mainIntent = new Intent(ResponseStartPage.this, ResponseMainActivity.class);
mainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(mainIntent);
finish();
}
});
}
else
{
Toast.makeText(ResponseStartPage.this, "Please Check your email and password", Toast.LENGTH_SHORT).show();
}
loadingBar.dismiss();
}
});
}
}
answered Jun 16 '18 at 8:17
JacekJacek
216
add a comment |
0
This is from my working code from logging class:
private void LoginUserAccount(String email, String password)
{
if (TextUtils.isEmpty(email))
{
Toast.makeText(ResponseStartPage.this, "Please write Your Email", Toast.LENGTH_SHORT).show();
}
if (TextUtils.isEmpty(password))
{
Toast.makeText(ResponseStartPage.this, "Please write Your password", Toast.LENGTH_SHORT).show();
}
else
{
loadingBar.setTitle("Login Account");
loadingBar.setMessage("Please wait for verification...");
loadingBar.show();
mAuth.signInWithEmailAndPassword(email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task)
{
if (task.isSuccessful())
{
String online_user_id = mAuth.getCurrentUser().getUid();
String DeviceToken = FirebaseInstanceId.getInstance().getToken();
usersReference.child(online_user_id).child("device_token").setValue(DeviceToken)
.addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid)
{
Intent mainIntent = new Intent(ResponseStartPage.this, ResponseMainActivity.class);
mainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(mainIntent);
finish();
}
});
}
else
{
Toast.makeText(ResponseStartPage.this, "Please Check your email and password", Toast.LENGTH_SHORT).show();
}
loadingBar.dismiss();
}
});
}
}
answered Jun 16 '18 at 8:17
JacekJacek
216
add a comment |
0
0
0
This is from my working code from logging class:
private void LoginUserAccount(String email, String password)
{
if (TextUtils.isEmpty(email))
{
Toast.makeText(ResponseStartPage.this, "Please write Your Email", Toast.LENGTH_SHORT).show();
}
if (TextUtils.isEmpty(password))
{
Toast.makeText(ResponseStartPage.this, "Please write Your password", Toast.LENGTH_SHORT).show();
}
else
{
loadingBar.setTitle("Login Account");
loadingBar.setMessage("Please wait for verification...");
loadingBar.show();
mAuth.signInWithEmailAndPassword(email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task)
{
if (task.isSuccessful())
{
String online_user_id = mAuth.getCurrentUser().getUid();
String DeviceToken = FirebaseInstanceId.getInstance().getToken();
usersReference.child(online_user_id).child("device_token").setValue(DeviceToken)
.addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid)
{
Intent mainIntent = new Intent(ResponseStartPage.this, ResponseMainActivity.class);
mainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(mainIntent);
finish();
}
});
}
else
{
Toast.makeText(ResponseStartPage.this, "Please Check your email and password", Toast.LENGTH_SHORT).show();
}
loadingBar.dismiss();
}
});
}
}
answered Jun 16 '18 at 8:17
JacekJacek
216
This is from my working code from logging class:
private void LoginUserAccount(String email, String password)
{
if (TextUtils.isEmpty(email))
{
Toast.makeText(ResponseStartPage.this, "Please write Your Email", Toast.LENGTH_SHORT).show();
}
if (TextUtils.isEmpty(password))
{
Toast.makeText(ResponseStartPage.this, "Please write Your password", Toast.LENGTH_SHORT).show();
}
else
{
loadingBar.setTitle("Login Account");
loadingBar.setMessage("Please wait for verification...");
loadingBar.show();
mAuth.signInWithEmailAndPassword(email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task)
{
if (task.isSuccessful())
{
String online_user_id = mAuth.getCurrentUser().getUid();
String DeviceToken = FirebaseInstanceId.getInstance().getToken();
usersReference.child(online_user_id).child("device_token").setValue(DeviceToken)
.addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid)
{
Intent mainIntent = new Intent(ResponseStartPage.this, ResponseMainActivity.class);
mainIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(mainIntent);
finish();
}
});
}
else
{
Toast.makeText(ResponseStartPage.this, "Please Check your email and password", Toast.LENGTH_SHORT).show();
}
loadingBar.dismiss();
}
});
}
}
answered Jun 16 '18 at 8:17
JacekJacek
216
answered Jun 16 '18 at 8:17
JacekJacek
216
answered Jun 16 '18 at 8:17
JacekJacek
216
answered Jun 16 '18 at 8:17
JacekJacek
216
216
add a comment |
add a comment |
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