[android-beginners] Re: onDestroy() caused "application stopped unexpectedly"
Thanks! I finally get it.
For those who are referring to this thread, I unregistered location
listener under the main Activity:
@Override
public void onDestroy(){
super.onDestroy();
//unregister location listener
locationManager.removeUpdates(locationListener);
}
On Jan 8, 10:22 pm, TreKing wrote:
> > It does stop retrieving GPS signals after I exit the app.
>
> If this is why you're doing this, you're going about this the wrong way. Use
> finish() on your activity, not System.exit(), and if you have a location
> listener set up that is using the GPS make sure to unregister it in your
> onPause() / onStop() / onDestroy() methods, depending on what functionality
> you need.
>
> ---
> --
> TreKing - Chicago transit tracking app for Android-powered
> deviceshttp://sites.google.com/site/rezmobileapps/treking
>
> On Fri, Jan 8, 2010 at 1:50 AM, Justin Anderson
> wrote:
>
>
>
> > Any particular reason you are using System.exit() as opposed to finish()???
>
> > finish() gives Android the opportunity to do any cleanup that it needs to
> > when your app gets done... I would imaging that System.exit() bypasses this.
>
> > --
> > There are only 10 types of people in the world...
> > Those who know binary and those who don't.
> > --
>
> > On Thu, Jan 7, 2010 at 11:27 PM, ZhouSu wrote:
>
> >> Thanks Justin and TreKing!
> >> I haven't found the error for onDestroy after looking at the log
> >> but I've managed to close the application using JAVA System.exit()
> >> instead.
> >> It does stop retrieving GPS signals after I exit the app.
>
> >> On Jan 7, 2:20 am, TreKing wrote:
> >> > > BTW, if i change onDestroy() to finish(), the application works fine
> >> so
> >> > > other parts should have no problem. How can I end the application
> >> lifecycle
> >> > > successfully?
>
> >> > Um ... call finish() instead of onDestroy?
>
> >> > Look at the logs like Justin said. My guess: you're not supposed to call
> >> > onDestroy() and the system is throwing an exception because you've done
> >> so
> >> > (I believe I've seen it also throw if you don't call super.onDestroy()
> >> in
> >> > your overwritten method ... so *it knows* .
>
> >> ---
> >> --
> >> > TreKing - Chicago transit tracking app for Android-powered
> >> deviceshttp://sites.google.com/site/rezmobileapps/treking
>
> >> --
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> >> Groups "Android Beginners" group.
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>
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Re: [android-beginners] Re: onDestroy() caused "application stopped unexpectedly"
> > It does stop retrieving GPS signals after I exit the app. If this is why you're doing this, you're going about this the wrong way. Use finish() on your activity, not System.exit(), and if you have a location listener set up that is using the GPS make sure to unregister it in your onPause() / onStop() / onDestroy() methods, depending on what functionality you need. - TreKing - Chicago transit tracking app for Android-powered devices http://sites.google.com/site/rezmobileapps/treking On Fri, Jan 8, 2010 at 1:50 AM, Justin Anderson wrote: > Any particular reason you are using System.exit() as opposed to finish()??? > > finish() gives Android the opportunity to do any cleanup that it needs to > when your app gets done... I would imaging that System.exit() bypasses this. > > > -- > There are only 10 types of people in the world... > Those who know binary and those who don't. > -- > > > On Thu, Jan 7, 2010 at 11:27 PM, ZhouSu wrote: > >> Thanks Justin and TreKing! >> I haven't found the error for onDestroy after looking at the log >> but I've managed to close the application using JAVA System.exit() >> instead. >> It does stop retrieving GPS signals after I exit the app. >> >> >> >> On Jan 7, 2:20 am, TreKing wrote: >> > > BTW, if i change onDestroy() to finish(), the application works fine >> so >> > > other parts should have no problem. How can I end the application >> lifecycle >> > > successfully? >> > >> > Um ... call finish() instead of onDestroy? >> > >> > Look at the logs like Justin said. My guess: you're not supposed to call >> > onDestroy() and the system is throwing an exception because you've done >> so >> > (I believe I've seen it also throw if you don't call super.onDestroy() >> in >> > your overwritten method ... so *it knows* . >> > >> > >> --- >> -- >> > TreKing - Chicago transit tracking app for Android-powered >> deviceshttp://sites.google.com/site/rezmobileapps/treking >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Android Beginners" group. >> >> NEW! Try asking and tagging your question on Stack Overflow at >> http://stackoverflow.com/questions/tagged/android >> >> To unsubscribe from this group, send email to >> android-beginners+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/android-beginners?hl=en >> >> > > -- > You received this message because you are subscribed to the Google > Groups "Android Beginners" group. > > NEW! Try asking and tagging your question on Stack Overflow at > http://stackoverflow.com/questions/tagged/android > > To unsubscribe from this group, send email to > android-beginners+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/android-beginners?hl=en > > -- You received this message because you are subscribed to the Google Groups "Android Beginners" group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
Re: [android-beginners] Re: onDestroy() caused "application stopped unexpectedly"
Any particular reason you are using System.exit() as opposed to finish()??? finish() gives Android the opportunity to do any cleanup that it needs to when your app gets done... I would imaging that System.exit() bypasses this. -- There are only 10 types of people in the world... Those who know binary and those who don't. -- On Thu, Jan 7, 2010 at 11:27 PM, ZhouSu wrote: > Thanks Justin and TreKing! > I haven't found the error for onDestroy after looking at the log > but I've managed to close the application using JAVA System.exit() > instead. > It does stop retrieving GPS signals after I exit the app. > > > > On Jan 7, 2:20 am, TreKing wrote: > > > BTW, if i change onDestroy() to finish(), the application works fine so > > > other parts should have no problem. How can I end the application > lifecycle > > > successfully? > > > > Um ... call finish() instead of onDestroy? > > > > Look at the logs like Justin said. My guess: you're not supposed to call > > onDestroy() and the system is throwing an exception because you've done > so > > (I believe I've seen it also throw if you don't call super.onDestroy() in > > your overwritten method ... so *it knows* . > > > > > --- > -- > > TreKing - Chicago transit tracking app for Android-powered deviceshttp:// > sites.google.com/site/rezmobileapps/treking > > -- > You received this message because you are subscribed to the Google > Groups "Android Beginners" group. > > NEW! Try asking and tagging your question on Stack Overflow at > http://stackoverflow.com/questions/tagged/android > > To unsubscribe from this group, send email to > android-beginners+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/android-beginners?hl=en > > -- You received this message because you are subscribed to the Google Groups "Android Beginners" group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: onDestroy() caused "application stopped unexpectedly"
Thanks Justin and TreKing! I haven't found the error for onDestroy after looking at the log but I've managed to close the application using JAVA System.exit() instead. It does stop retrieving GPS signals after I exit the app. On Jan 7, 2:20 am, TreKing wrote: > > BTW, if i change onDestroy() to finish(), the application works fine so > > other parts should have no problem. How can I end the application lifecycle > > successfully? > > Um ... call finish() instead of onDestroy? > > Look at the logs like Justin said. My guess: you're not supposed to call > onDestroy() and the system is throwing an exception because you've done so > (I believe I've seen it also throw if you don't call super.onDestroy() in > your overwritten method ... so *it knows* . > > --- > -- > TreKing - Chicago transit tracking app for Android-powered > deviceshttp://sites.google.com/site/rezmobileapps/treking -- You received this message because you are subscribed to the Google Groups "Android Beginners" group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
