Clearing activity stack is not working

Question

I have the following setup for my activities:

A (noHistory) -> B -> C -> D -> E

So when I start activity E from activity D I want E to become the root activity and clear the rest of the back stack.

I followed the solution mentioned in many posts here which is to add the following flags to my Intent:

final Intent explicitIntent = new Intent(this,
                E.class);
        explicitIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
        explicitIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        this.startActivity(explicitIntent);

However, Activity E (which was not running before) does not become the root of the back stack. Instead, just Activity D is deleted from the back stack, C and B are still there if I press the back button.

So is what I want to achieve really impossible in SDK < 11 as described here: Clear the entire history stack and start a new activity on Android ?

Check the below link, a similar question. It may help you. [How to clear the Android Stack of activities?](http://stackoverflow.com/questions/4190429/how-to-clear-the-android-stack-of-activities) — Yugandhar Babu, Mar 30 '12 at 09:18
@Rasel No, I want to leave the application when I go back from E — Display name, Mar 30 '12 at 09:59

score 1 · Answer 1 · answered Mar 30 '12 at 09:36

Start your activities like this..

this in activity B

 int k=1;
        Intent i=new Intent(B.this,C.class);
        startActivityForResult(i,k);

this in activity C

int j=1;
        Intent i=new Intent(C.this,D.class);
        startActivity(i,j);

this in activity D

 int j=1;
        Intent i=new Intent(D.this,E.class);
         startActivityForResult(i,j);
         setResult(RESULT_OK, null);
        finish();

and put this in activity C

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
   if (requestCode ==1) {
      if (resultCode == RESULT_OK) {

        setResult(RESULT_OK, null);
     finish();

      }
   }

this in activity B

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
   if (requestCode ==1) {
      if (resultCode == RESULT_OK) {

        setResult(RESULT_OK, null);
     finish();

      }
   }

score 0 · Answer 2 · edited Mar 30 '12 at 09:49

0

In your code just replace the below line:

explicitIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
explicitIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

with these line:

explicitIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

Try this code.

edited Mar 30 '12 at 09:49

Natali

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answered Mar 30 '12 at 09:34

Ishu

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Didn't work either (I guess because the activity E is not running yet) – Display name Mar 30 '12 at 10:13

score 0 · Accepted Answer · answered Mar 30 '12 at 10:19

0

In the end I just did as Rasel advised (in the comments to my question) When entering activity E i called finish on activities B,C,D to get them off the stack.

answered Mar 30 '12 at 10:19

Display name

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Clearing activity stack is not working

3 Answers3

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