How to finish current activity in Android

Question

I have an Android application   I am making a loading screen with a progress bar   I entered a delay in the onCreate method   When the timer finishes  I want to finish the current activity and start a new one     It just gives me an exception when it calls the finish   method   public class LoadingScreen extends Activity      private LoadingScreen loadingScreen      Intent i   new Intent this  HomeScreen class        Override     public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout loading            CountDownTimer timer   new CountDownTimer 10000  1000    10 second Timer                       public void onTick long l                                              Override             public void onFinish                                  loadingScreen finishActivity 0                   startActivity i                            start              How can I change the code so that it ends when the progress bar is done

User · Answer

What I was doing was starting a new activity and then closing the current activity  So  remember this simple rule   finish   startActivity lt     gt      and not  startActivity lt     gt    finish

User · Answer

You can also use  finishAffinity       Finish this activity as well as all activities immediately below it in the current task that have the same affinity

User · Answer

You need to call finish   from the UI thread  not a background thread  The way to do this is to declare a Handler and ask the Handler to run a Runnable on the UI thread  For example   public class LoadingScreen extends Activity      private LoadingScreen loadingScreen      Intent i   new Intent this  HomeScreen class       Handler handler       Override     public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           handler   new Handler            setContentView R layout loading            CountDownTimer timer   new CountDownTimer 10000  1000    10seceonds Timer                         Override              public void onTick long l                                                 Override              public void onFinish                                    handler post new Runnable                          public void run                              loadingScreen finishActivity 0                            startActivity i                                                                         start

User · Answer

I tried using this example but it failed miserably  Every time I use to invoke finish    finishactivity   inside a handler  I end up with this menacing java lang IllegalAccess Exception  i m not sure how did it work for the one who posed the question    Instead the solution I found was that create a method in your activity such as   void kill activity          finish        Invoke this method from inside the run method of the handler  This worked like a charm for me  Hope this helps anyone struggling with  how to close an activity from a different thread

User · Answer

Just call the finish   method   context finish

User · Answer

If you are doing a loading screen  just set the parameter to not keep it in activity stack  In your manifest xml  where you define your activity do    lt activity android name   LoadingScreen  android noHistory  true        gt    And in your code there is no need to call  finish   anymore  Just do startActivity i    There is also no need to keep a instance of your current activity in a separate field  You can always access it like LoadingScreen this doSomething   instead of private LoadingScreen loadingScreen

User · Answer

I found many answers but not one is simple    I hope this will help you     try      Intent intent   new Intent CurrentActivity this  NewActivity class       startActivity intent     finally       finish        so  Very simple logic is here  as we know that in java we write code that has some chances of exception in a try block and handle that exception in catch block but in finally block we write code that has to be executed in any cost  Either the exception comes or not

User · Answer

When you want start a new activity and finish the current activity you can do this   API 11 or greater  Intent intent   new Intent OldActivity this  NewActivity class   intent setFlags Intent FLAG ACTIVITY NEW TASK   Intent FLAG ACTIVITY CLEAR TASK   startActivity intent     API 10 or lower  Intent intent   new Intent OldActivity this  NewActivity class   intent setFlags IntentCompat FLAG ACTIVITY NEW TASK   IntentCompat FLAG ACTIVITY CLEAR TASK   startActivity intent     I hope this can help somebody

[android] How to finish current activity in Android

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