[android-developers] Re: Actionbar.DISPLAY_HOME_AS_UP causes activity to not call destroy, is this by design?

That's what I get for coding at night. I had forgotten that I had
created my own base activity that had implemented starting a new
Intent and no finish call.

Sorry about that, and thanks for responding :-)

-Christer

On Jun 5, 1:31 am, Mark Murphy <mmur...@commonsware.com> wrote:
> AFAIK, the top left icon has no effect, other than whatever effect you
> apply yourself. Just marking it as "up enabled" does not cause Android
> to somehow magically know how to handle that. Instead, you have to
> override onOptionsItemSelected() and watch for android.R.id.home and
> do something there.
>
> For example, in one of my activities that uses
> setDisplayHomeAsUpEnabled(), I have:
>
>         @Override
>         public boolean onOptionsItemSelected(MenuItem item) {
>                 switch (item.getItemId()) {
>                         case android.R.id.home:
>                                 finish();
>
>                                 return(true);
>                 }
>
>                 return(super.onOptionsItemSelected(item));
>         }
>
> In this case, the flow is much like yours -- "up" equates to "back",
> so I just finish() the current activity to make it happen.
>
> If you are using startActivity() with FLAG_ACTIVITY_REORDER_TO_FRONT
> to go "home", that's not going to immediately destroy your original
> activity, any more than any other startActivity() call does.
>
> So... what are you doing in onOptionsItemSelected()?
>
>
>
>
>
>
>
>
>
> On Sat, Jun 4, 2011 at 7:22 PM, Christer Nordvik <cnord...@gmail.com> wrote:
> > I have two activities.
>
> > 1. Home
> > 2. Details
>
> > In the details activity I set:
> >  ActionBar actionBar = this.getActionBar();
> >  actionBar.setDisplayHomeAsUpEnabled(true);
>
> > and this causes the top left icon to act as a home button.
>
> > But what I hadn't anticipated was that the details activity isn't
> > destroyed when pressing the home button. If I press the back button
> > then the activity is destroyed.
>
> > Can anyone explain why the details activity isn't destroyed? Do I need
> > to intercept the user clicking the home button and destroy the
> > activity myself since I want to cleanup the image resources it uses...
>
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> Mark Murphy (a Commons Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy
>
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