Android Question [SOLVED] Close activity and remove from stack.

Serge Bertet · Jul 15, 2022

Hi all, an easy question but no way to find an answer ...

When the user receive a notification and clicks on it the app jumps in an activity.
This breaks the normal cycle of activities.
Is there a way to remove this activity from the stack?

B4X:

Sub Activity_Pause(UserClosed As Boolean)
    if starter.Notified And UserClosed then B4XPages.ClosePageAndRemove(Me) ' or something like that ...
End Sub

Thank you.

Serge.

Alexander Stolte · Jul 15, 2022

You can't remove a B4XPage from the stack, the only thing that works is to close a page B4XPages.ClosePage(Me)

Serge Bertet · Jul 15, 2022

Alexander Stolte said:
B4XPages.ClosePage(Me)

Really bad news

This has the same effect as the user click on back button I suppose.

Alexander Stolte · Jul 15, 2022

Exactly, but why is that a problem?

Serge Bertet · Jul 15, 2022

Alexander Stolte said:
Exactly, but why is that a problem?

You are right, I think I manage that case the wrong way, my fault...

B4X:

Private Sub Activity_KeyPress(KeyCode As Int) As Boolean 'Return True to consume the event
    If KeyCode = KeyCodes.KEYCODE_BACK Then
        StartActivity(Main) ' I should not do that, just close the current activity
        Return True
    End If
    Return False
End Sub

Thank you to point that ... sometimes your are looking for problem where there is no.

Alexander Stolte · Jul 15, 2022

Serge Bertet said:
StartActivity(Main) ' I should not do that, just close the current activity

You should not do this with B4XPages in general, because there is only 1 main activity in B4A which is already open.

Serge Bertet · Jul 15, 2022

OK, I found a way to go back to my previous activity (before notification click):

B4X:

Private Sub Activity_KeyPress(KeyCode As Int) As Boolean 'Return True to consume the event
    If KeyCode = KeyCodes.KEYCODE_BACK Then
        Activity.Finish
        Return True ' don't know if needed
    End If
    Return False ' don't know if needed
End Sub

without this sub the back button does nothing.

Android Question [SOLVED] Close activity and remove from stack.

Serge Bertet

Active Member

Alexander Stolte

Expert

Serge Bertet

Active Member

Alexander Stolte

Expert

Serge Bertet

Active Member

Alexander Stolte

Expert

Serge Bertet

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