Finish all previous activities

Question

My application  has the following flow screens    Home- gt screen 1- gt screen 2- gt screen 3- gt screen 4- gt screen 5  Now I have a common log out  button in each screens   Home  screen 1   screen 2  screen 3  screen 4   screen 5    I want that when user clicks on the log out button from any screen   all the screens will be finished and a new screen Log in will open     I have tried nearly all FLAG ACTIVITY to achieve this  I also go through some answers in stackoverflow  but not being able to solve the problem  My application is on Android 1 6 so not being able to use FLAG ACTIVITY CLEAR TASK   Is there any way to solve the issue

User · Answer

Best way to close all the previous activities and clear the memory  finishAffinity   System exit 0

User · Answer

I found this way  it ll clear all history and exit  Intent startMain   new Intent Intent ACTION MAIN   startMain addCategory Intent CATEGORY HOME   startMain setFlags Intent FLAG ACTIVITY NEW TASK   startActivity startMain   Intent intent   new Intent getApplicationContext    SplashScreen class   intent addFlags Intent FLAG ACTIVITY CLEAR TOP   startActivity intent    finish    System exit 0

User · Answer

When the user wishes to exit all open activities  they should press a button which loads the first Activity that runs when your application starts  clear all the other activities  then have the last remaining activity finish  Have the following code run when the user presses the exit button  In my case  LoginActivity is the first activity in my program to run   Intent intent   new Intent getApplicationContext    LoginActivity class   intent setFlags Intent FLAG ACTIVITY CLEAR TOP   intent putExtra  EXIT   true   startActivity intent     The above code clears all the activities except for LoginActivity  Then put the following code inside the LoginActivity s onCreate       to listen for when LoginActivity is recreated and the  EXIT  signal was passed   if  getIntent   getBooleanExtra  EXIT   false         finish          Why is making an exit button in Android so hard   Android tries hard to discourage you from having an  exit  button in your application  because they want the user to never care about whether or not the programs they use are running in the background or not    The Android OS developers want your program to be able to survive an unexpected shutdown and power off of the phone  and when the user restarts the program  they pick up right where they left off  So the user can receive a phone call while they use your application  and open maps which requires your application to be freed for more resources    When the user resumes your application  they pick up right where they left off with no interruption  This exit button is usurping power from the activity manager  potentially causing problems with the automatically managed android program life cycle

User · Answer

On a side note  good to know This answer works  https   stackoverflow com a 13468685 7034327   Intent intent   new Intent getApplicationContext    LoginActivity class   intent setFlags Intent FLAG ACTIVITY CLEAR TASK Intent FLAG ACTIVITY NEW TASK   startActivity intent   this finish      whereas this doesn t work  Intent intent   new Intent getApplicationContext    LoginActivity class   intent setFlags Intent FLAG ACTIVITY CLEAR TASK   intent setFlags Intent FLAG ACTIVITY NEW TASK   startActivity intent      setFlags   replaces any previous flags and doesn t append any new flags while  addFlags   does   So this will also work  Intent intent   new Intent getApplicationContext    LoginActivity class   intent addFlags Intent FLAG ACTIVITY CLEAR TASK   intent addFlags Intent FLAG ACTIVITY NEW TASK   startActivity intent

User · Answer

I guess I am late but there is simple and short answer  There is a finishAffinity   method in Activity that will finish the current activity and all parent activities  but it works only in Android 4 1 or higher   For API 16   use  finishAffinity     For below 16  use  ActivityCompat finishAffinity YourActivity this    Hope it helps   shareedit answered May 27  18 at 8 03  Akshay Taru

User · Answer

for API    15 to API 23 simple solution    Intent nextScreen   new Intent currentActivity this  MainActivity class    nextScreen addFlags Intent FLAG ACTIVITY NEW TASK   IntentCompat FLAG ACTIVITY CLEAR TASK    startActivity nextScreen    ActivityCompat finishAffinity currentActivity this

User · Answer

Simply  when you go from the login screen  not when finishing the login screen   And then in all forward activities  use this for logout   final Intent intent   new Intent getBaseContext    LoginScreen class   intent setFlags Intent FLAG ACTIVITY CLEAR TOP   context startActivity intent     It works perfectly

User · Answer

I guess I am late but there is simple and short answer  There is a finishAffinity   method in Activity that will finish the current activity and all parent activities  but it works only in Android 4 1 or higher   For API 16   use  finishAffinity     For below 16  use  ActivityCompat finishAffinity YourActivity this    Hope it helps

User · Answer

If you are using startActivityForResult   in your previous activities  just override OnActivityResult   and call the finish    method inside it in all activities   This will do the job

User · Answer

Before launching your new Activity  simply add the following code   finishAffinity      Or if you want it to work in previous versions of Android   ActivityCompat finishAffinity this

User · Answer

For logout button on last screen of app  use this code on logout button listener to finish all open previous activities  and your problem is solved         Intent intent   new Intent this  loginScreen class   ntent setFlags Intent FLAG ACTIVITY NEW TASK   Intent FLAG ACTIVITY CLEAR TASK   startActivity intent

User · Answer

Intent intent   new Intent this  classObject   intent addFlags Intent FLAG ACTIVITY NEW TASK   IntentCompat FLAG ACTIVITY CLEAR TASK   startActivity intent     This Will work for all Android versions  Where IntentCompat the class added in Android Support library

User · Answer

In my case I use finishAffinity   function in last activity like   finishAffinity   startHomeActivity     Hope it ll be useful

User · Answer

i have same problem you can use IntentCompat   like this    import android support v4 content IntentCompat  intent setFlags Intent FLAG ACTIVITY NEW TASK  IntentCompat FLAG ACTIVITY CLEAR TASK       this code work for me    Android api 17

User · Answer

When user click on the logout button then write the following code   Intent intent   new Intent this  LoginActivity class   intent addFlags Intent FLAG ACTIVITY CLEAR TOP   startActivity intent     And also when after login if you call new activity do not use finish

User · Answer

If your application has minimum sdk version 16 then you can use finishAffinity    Finish this activity as well as all activities immediately below it in the current task that have the same affinity   This is work for me In Top Payment screen remove all back-stack activits    Override public void onBackPressed              finishAffinity            startActivity new Intent PaymentDoneActivity this Home class             http   developer android com reference android app Activity html finishAffinity 28 29

User · Answer

You may try Intent FLAG ACTIVITY CLEAR TASK Intent FLAG ACTIVITY NEW TASK  It will totally clears all previous activity s  and start new activity

User · Answer

Use    Intent intent   new Intent getApplicationContext    Home class   intent addFlags Intent FLAG ACTIVITY CLEAR TOP   startActivity intent     This will clear all the activities on top of home    Assuming you are finishing the login screen when the user logs in and home is created and afterwards all the screens from 1 to 5 on top of that one  The code i posted will return you to home screen finishing all the other activites  You can add an extra in the intent and read that in the home screen activity and finish it also  maybe launch login screen again from there or something    I am not sure but you can also try going to login with this flag  I don t know how the activities will be ordered in that case  So don t know if it will clear the ones below the screen you are on including the one you are currently on but its definitely the way to go   Hope this helps

User · Answer

Use the following for activity  intent addFlags Intent FLAG ACTIVITY CLEAR TOP   Intent FLAG ACTIVITY CLEAR TASK   Intent FLAG ACTIVITY NEW TASK     remove CLEAR TASK flag for fragment use   I hope this may use for some people

User · Answer

Log in- Home- screen 1- screen 2- screen 3- screen 4- screen 5  on screen 4  or any other  -  StartActivity Log in  with FLAG ACTIVITY CLEAR TOP

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Intent i1 new Intent getApplicationContext   StartUp Page class   i1 setAction Intent ACTION MAIN   i1 addCategory Intent CATEGORY HOME   i1 setFlags Intent FLAG ACTIVITY CLEAR TOP   i1 setFlags Intent FLAG ACTIVITY CLEAR TASK   i1 setFlags Intent FLAG ACTIVITY NEW TASK   Intent FLAG ACTIVITY CLEAR TASK   startActivity i1   finish

User · Answer

instead of using finish   just use finishAffinity

User · Answer

I found this solution to work on every device despite API level  even for  lt  11   Intent intent   new Intent getApplicationContext    LoginActivity class   ComponentName cn   intent getComponent    Intent mainIntent   IntentCompat makeRestartActivityTask cn   startActivity mainIntent

User · Answer

From developer android com    public void finishAffinity          Added in API level 16   Finish this activity as well as all activities immediately below it in the current task that have the same affinity  This is typically used when an application can be launched on to another task  such as from an ACTION VIEW of a content type it understands  and the user has used the up navigation to switch out of the current task and in to its own task  In this case  if the user has navigated down into any other activities of the second application  all of those should be removed from the original task as part of the task switch   Note that this finish does not allow you to deliver results to the previous activity  and an exception will be thrown if you are trying to do so

User · Answer

If you log in the user in screen 1 and from there you go to the other screens  use   Intent intent   new Intent this  Screen1 class   intent addFlags FLAG ACTIVITY CLEAR TOP   startActivity intent

User · Answer

A solution I implemented for this  I think I found it on Stack nbsp Overflow somewhere  but I don t remember  so thanks to whoever did that in the first place    From any of your activities do this      Clear your session  remove preferences  etc  Intent intent    new Intent getBaseContext    LoginActivity class   intent setFlags Intent FLAG ACTIVITY CLEAR TOP   startActivity intent     Then in your LoginActivity  overwrite onKeyDown   public boolean onKeyDown int keyCode  KeyEvent event        if  keyCode    KeyEvent KEYCODE BACK            moveTaskToBack true           return true            return super onKeyDown keyCode  event

[java] Finish all previous activities

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