How to exit from the application and show the home screen

Question

I have an application where on the home page I have buttons for navigation through the application   On that page I have a button  EXIT  which when clicked should take the user to the home screen on the phone where the application icon is   How can I do that

User · Answer

There is another option  to use the FinishAffinity method to close all the tasks in the stack related to the app    See  https   stackoverflow com a 27765687 1984636

User · Answer

System exit 0     Is probably what you are looking for  It will close the entire application and take you to the home Screen

User · Answer

When u call finish onDestroy   of that activity will be called and it will go back to previous activity in the activity stack    So   for exit do not call finish

User · Answer

Maybe my code can hepls  Main Activity java         Override     protected void onDestroy             super onDestroy            this finish            exit 0               Override     public boolean onKeyDown int keyCode  KeyEvent event             switch keyCode                   case KeyEvent KEYCODE BACK                  AlertDialog Builder builder   new AlertDialog Builder this                   builder setTitle  My application   setMessage  Keep playing    setIcon R drawable icon                      Go to backgroung                 builder setPositiveButton  OK   new DialogInterface OnClickListener                         public void onClick DialogInterface dialog  int which    moveTaskToBack true                                            Exit from app calling protected void onDestroy                   builder setNegativeButton  CLOSE APPLICATION   new DialogInterface OnClickListener                         public void onClick DialogInterface dialog  int which    onDestroy                                             Close this dialog                 builder setNeutralButton  CANCEL   new DialogInterface OnClickListener                         public void onClick DialogInterface dialog  int which    dialog cancel                                          AlertDialog dialog   builder create                    dialog show                    return true                    return false

User · Answer

If you want to exit from your application  Then use this code inside your button pressed event  like   public void onBackPressed         moveTaskToBack true       android os Process killProcess android os Process myPid         System exit 1

User · Answer

I did it with observer mode   Observer interface  public interface Observer   public void update Subject subject       Base Subject  public class Subject   private List lt Observer gt  observers   new ArrayList lt Observer gt      public void attach Observer observer       observers add observer      public void detach Observer observer       observers remove observer      protected void notifyObservers        for Observer observer   observers           observer update this               Child Subject implements the exit method  public class ApplicationSubject extends Subject   public void exit        notifyObservers          MyApplication which your application should extends it  public class MyApplication extends Application    private static ApplicationSubject applicationSubject   public ApplicationSubject getApplicationSubject                 if applicationSubject    null  applicationSubject   new ApplicationSubject        return applicationSubject         Base Activity  public abstract class BaseActivity extends Activity implements Observer    public MyApplication app    Override protected void onCreate Bundle savedInstanceState           TODO Auto-generated method stub     super onCreate savedInstanceState       app    MyApplication  this getApplication        app getApplicationSubject   attach this       Override public void finish            TODO Auto-generated method stub             app getApplicationSubject   detach this       super finish              exit the app     public void close         app getApplicationSubject   exit         Override public void update Subject subject           TODO Auto-generated method stub     this finish           let s test it  public class ATestActivity extends BaseActivity    Override protected void onCreate Bundle savedInstanceState           TODO Auto-generated method stub     super onCreate savedInstanceState       close      invoke  close

User · Answer

Some Activities actually you don t want to open again when back button pressed such Splash Screen Activity  Welcome Screen Activity  Confirmation Windows  Actually you don t need this in activity stack  you can do this using   open manifest xml file and add a attribute      android noHistory  true    to these activities    lt activity     android name  com example shoppingapp AddNewItems      android label         android noHistory  true  gt   lt  activity gt    OR   Sometimes you want close the entire application in certain back button press  Here best practice is open up the home window instead of exiting application  For that you need to override onBackPressed   method  usually this method open up the top activity in the stack    Override public void onBackPressed    Intent a   new Intent Intent ACTION MAIN   a addCategory Intent CATEGORY HOME   a setFlags Intent FLAG ACTIVITY NEW TASK   startActivity a        OR  In back button pressed you want to exit that activity and also you also don t want to add this in activity stack  call finish   method inside onBackPressed   method  it will not make  close the entire application  it will go for the previous activity in the stack    Override public void onBackPressed       finish

User · Answer

This works well for me  Close all the previous activities as follows       Intent intent   new Intent this  MainActivity class       intent setFlags Intent FLAG ACTIVITY CLEAR TOP       intent putExtra  Exit me   true       startActivity intent       finish      Then in MainActivity onCreate   method add this to finish the MainActivity      setContentView R layout main layout        if  getIntent   getBooleanExtra  Exit me   false            finish            return     add this to prevent from doing unnecessary stuffs

User · Answer

It is not recommended to exit your Android Application  See this question for more details    The user can always quit your app through the home button or in the first activity through the back button

User · Answer

Add following lines after finish    in onDestroy     android os Process killProcess android os Process myPid     super onDestroy

User · Answer

if you want to exit application  put this code under your function  public void yourFunction     finishAffinity       moveTaskToBack true           For an instance  if you want to exit an application on double click of a    button then the following code can be used   Override public boolean onKeyDown int keyCode  KeyEvent event         if  keyCode    KeyEvent KEYCODE BACK  amp  amp  event getRepeatCount      2               do something on back          From Android 16  you can use the following           finishAffinity            moveTaskToBack true              return super onKeyDown keyCode  event

User · Answer

I tried previous answers but they lacks in some points  For example if you don t do a return  after finishing activity  remaining activity code runs  Also you need to edit onCreate with return  If you doesn t run super onCreate   you will get a runtime error   Say you have MainActivity and ChildActivity   Inside ChildActivity add this   Intent intent   new Intent ChildActivity this  MainActivity class   intent setFlags Intent FLAG ACTIVITY CLEAR TOP   intent putExtra  EXIT   true   startActivity intent   return true    Inside MainActivity s onCreate add this    Override public void onCreate Bundle savedInstanceState         mContext   getApplicationContext         super onCreate savedInstanceState        if  getIntent   getBooleanExtra  EXIT   false             finish            return               your current codes        your current codes

User · Answer

Here s what i did   SomeActivity java    Override     public void onBackPressed                 Intent newIntent   new Intent this QuitAppActivity class               newIntent addFlags Intent FLAG ACTIVITY CLEAR TOP Intent FLAG ACTIVITY CLEAR TASK   Intent FLAG ACTIVITY NEW TASK               startActivity newIntent               finish            QuitAppActivity java   Override protected void onCreate Bundle savedInstanceState          super onCreate savedInstanceState         finish        Basically what you did is cleared all activities from the stack and launch QuitAppActivity  that will finish the task

User · Answer

Android s design does not favor exiting an application by choice  but rather manages it by the OS  You can bring up the Home application by its corresponding Intent   Intent intent   new Intent Intent ACTION MAIN   intent addCategory Intent CATEGORY HOME   intent setFlags Intent FLAG ACTIVITY NEW TASK   startActivity intent

User · Answer

May be you can try something like this  Suppose in our application  we have a number of activities say ten  and we need to exit directly from this activity  What we can do is  create an intent and go to the root activity and set flag in the intent as  intent setFlags Intent FLAG ACTIVITY CLEAR TOP     also  add some extra like boolean to the intent  intent putExtra  EXIT   true     Then in root activity  check the value of the boolean and according to that call finish    in the onCreate   of the root activity  if  getIntent   getBooleanExtra  EXIT   false      finish

User · Answer

If you want to end an activity you can simply call finish    It is however bad practice to have an exit button on the screen

User · Answer

I tried exiting application using following code snippet  this it worked for me  Hope this helps you   i did small demo with 2 activities   first activity  public class MainActivity extends Activity implements OnClickListener      private Button secondActivityBtn      private SharedPreferences pref      private SharedPreferences Editor editer        Override     public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main            secondActivityBtn  Button  findViewById R id SecondActivityBtn           secondActivityBtn setOnClickListener this            pref   this getSharedPreferences  MyPrefsFile   MODE PRIVATE           editer   pref edit             if pref getInt  exitApp   0     1               editer putInt  exitApp   0               editer commit                finish                         Override     public void onClick View v            switch  v getId              case R id SecondActivityBtn              Intent intent  new Intent MainActivity this  YourAnyActivity class               startActivity intent               break          default              break                      your any other activity  public class YourAnyActivity extends Activity implements OnClickListener       private Button exitAppBtn      private SharedPreferences pref      private SharedPreferences Editor editer        Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity any            exitAppBtn    Button  findViewById R id exitAppBtn           exitAppBtn setOnClickListener this            pref   this getSharedPreferences  MyPrefsFile   MODE PRIVATE           editer   pref edit                Override     public void onClick View v            switch  v getId              case R id exitAppBtn              Intent main intent   new Intent YourAnyActivity this                      MainActivity class               main intent addFlags Intent FLAG ACTIVITY CLEAR TOP               startActivity main intent               editer putInt  exitApp  1               editer commit                break          default              break

User · Answer

100  works fine  this is code for Exit your app onClick  Method       Button exit    Button findViewById R id exitbutton        exit setOnClickListener new View OnClickListener               Override          public void onClick View view                 finish                android os Process killProcess android os Process myPid                 System exit 1               Toast makeText getApplicationContext     Closed Completely and Safely   Toast LENGTH LONG  show

User · Answer

You can just add moveTaskToBack true  in your exit button s onClickedListener to minimize the application   Hope it helps

User · Answer

first finish your application using method finish     and then add below lines in onDestroy for Removing Force close  android os Process killProcess android os Process myPid     super onDestroy

[android] How to exit from the application and show the home screen?

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