dgates

Now that I'm downloading apps from the app store, I have a few
questions that I'm hoping someone can help me with.


1. If an app isn't running, then just having it installed on my iPhone
won't do anything to affect some app I'm currently running, will it?

I ask because I downloaded 3 or 4 new apps yesterday, didn't run any
of them, but noticed that a couple other programs (reQall and
BeeJiveIM) froze on me this morning.


2. When I leave an app to go to the Home screen, have I compeletely
closed that app? Or is it in some way still running "in the
background?" What if it was in the middle of sending or receiving
data when I closed it?


3. If an app freezes or behaves badly and I close it -- either with a
quick push to the Home button or a 6-second push to the Home button --
is that app now safely out of my memory? Am I now "clean," or should
I restart the whole iPhone to make sure everything is "clean?"

I don't know exactly what I mean by "clean" -- presumably that I'm
100% back to the state I was in before I ran the app that froze --
that it hasn't left any processes running in the background, etc.


Thanks in advance.


By the way, is this newsgroup the best place to ask questions like
this? Or is there some Apple-related forum or website that would be
better for some reason?

nospam

In article <1d1ui417fr33ipqt6kdgjod0h396paun2f@4ax.com>, dgates
<dgates@somedomain.com> wrote:

> Now that I'm downloading apps from the app store, I have a few
> questions that I'm hoping someone can help me with.
>
> 1. If an app isn't running, then just having it installed on my iPhone
> won't do anything to affect some app I'm currently running, will it?

nope, it just takes up space.

> 2. When I leave an app to go to the Home screen, have I compeletely
> closed that app? Or is it in some way still running "in the
> background?" What if it was in the middle of sending or receiving
> data when I closed it?

pressing home is basically a quit message to the app. depending on how
it's written, it may finish what it's doing before quitting.

> 3. If an app freezes or behaves badly and I close it -- either with a
> quick push to the Home button or a 6-second push to the Home button --
> is that app now safely out of my memory? Am I now "clean," or should
> I restart the whole iPhone to make sure everything is "clean?"

it's 'clean', however, a reboot might solve the crashing problem.
without actually seeing crash logs, it's just a guess why it froze and
if the app is buggy, it may crash again.

> By the way, is this newsgroup the best place to ask questions like
> this? Or is there some Apple-related forum or website that would be
> better for some reason?

there's a discussion forum at apple as well as iphone related web sites.

4phun

On Nov 27, 3:47*pm, dgates <dga...@somedomain.com> wrote:
> Now that I'm downloading apps from the app store, I have a few
> questions that I'm hoping someone can help me with.
>
> 1. If an app isn't running, then just having it installed on my iPhone
> won't do anything to affect some app I'm currently running, will it?
>
> I ask because I downloaded 3 or 4 new apps yesterday, didn't run any
> of them, but noticed that a couple other programs (reQall and
> BeeJiveIM) froze on me this morning.
>
> 2. When I leave an app to go to the Home screen, have I compeletely
> closed that app? *Or is it in some way still running "in the
> background?" *What if it was in the middle of sending or receiving
> data when I closed it?
>
> 3. If an app freezes or behaves badly and I close it -- either with a
> quick push to the Home button or a 6-second push to the Home button --
> is that app now safely out of my memory? *Am I now "clean," or should
> I restart the whole iPhone to make sure everything is "clean?"
>
> I don't know exactly what I mean by "clean" -- presumably that I'm
> 100% back to the state I was in before I ran the app that froze --
> that it hasn't left any processes running in the background, etc.
>
> Thanks in advance.
>
> By the way, is this newsgroup the best place to ask questions like
> this? *Or is there some Apple-related forum or website that would be
> better for some reason?

I submitted a lengthy post today to apple-iphone @yahoogroups.com that
answers your question.

Look for ....

TIP: iPhone Application Crashes: Preventing & Fixing

dgates

On Thu, 27 Nov 2008 16:00:50 -0800 (PST), 4phun <vic.healey@gmail.com>
wrote:

>On Nov 27, 3:47*pm, dgates <dga...@somedomain.com> wrote:
>> Now that I'm downloading apps from the app store, I have a few
>> questions that I'm hoping someone can help me with.
>>
>> 1. If an app isn't running, then just having it installed on my iPhone
>> won't do anything to affect some app I'm currently running, will it?
>>
>> I ask because I downloaded 3 or 4 new apps yesterday, didn't run any
>> of them, but noticed that a couple other programs (reQall and
>> BeeJiveIM) froze on me this morning.
>>
>> 2. When I leave an app to go to the Home screen, have I compeletely
>> closed that app? *Or is it in some way still running "in the
>> background?" *What if it was in the middle of sending or receiving
>> data when I closed it?
>>
>> 3. If an app freezes or behaves badly and I close it -- either with a
>> quick push to the Home button or a 6-second push to the Home button --
>> is that app now safely out of my memory? *Am I now "clean," or should
>> I restart the whole iPhone to make sure everything is "clean?"
>>
>> I don't know exactly what I mean by "clean" -- presumably that I'm
>> 100% back to the state I was in before I ran the app that froze --
>> that it hasn't left any processes running in the background, etc.
>>
>> Thanks in advance.
>>
>> By the way, is this newsgroup the best place to ask questions like
>> this? *Or is there some Apple-related forum or website that would be
>> better for some reason?
>
>I submitted a lengthy post today to apple-iphone @yahoogroups.com that
>answers your question.
>
>Look for ....
>
>TIP: iPhone Application Crashes: Preventing & Fixing


You've posted good replies in the past, so I won't complain too much
about this one, but it didn't really answer my questions. It answered
a question I didn't ask, which was "If my iPhone freezes or has
problems, what are some things I can try?" But it didn't really
answer the questions above.

For example:

1. If an app isn't running, then just having it installed on my iPhone
won't do anything to affect some app I'm currently running, will it?

2. When I leave an app to go to the Home screen, have I compeletely
closed that app? Or is it in some way still running "in the
background?"

etc.


Still, the answer you posted is full of enough tips that I'll see if I
can paste it here.


And thanks for the tips.


============================

I found an interesting bit of knowledge related to why apps crash on
the iPhone. It is below in 'my tip'. BTW when you install any type of
new program on the iPhone it is very desirable to power the iPhone off
completely and then reboot. A lot of future problems go away if you do
that. Now the tip.

TIP

A number of users report crashes from various iPhone applications,
both Apple-supplied and third-party. The most common iPhone crash is
one where the application you are working in suddenly ceases
operation, the screen momentarily turns black, then the iPhone home
screen appears. In a slightly more serious manifestation, the crash
will result in a complete freeze where the iPhone is unresponsive.

Sometimes, when an application crashes, it will refuse to properly
launch thenceforth, crashing immediately after its icon is tapped.

Generally, one of the three following procedures will resolve this
issue. Try them in order.

Full reboot Perform a hard reboot of your iPhone as follows: Turn the
iPhone off completely, by pressing and holding the Sleep/Wake button
(on top of the device) for a few seconds then slide the red slider.
Turn it back on by holding the Sleep/Wake button until the Apple logo
appears. This can clear potentially problematic data, preventing some
crash-types.

Restore the iPhone Try performing a restore of your iPhone. Connect it
to your Mac or PC and, in iTunes, click the Restore button under the
Summary tab. Restoring the phone will erase contacts, calendars,
photos and other data on the phone, but will restore automatically
backed-up information including text messages, notes, call history,
contact favorites, sound settings, widget settings, etc.

Reinstall the application

* Touch and hold any application icon the icons begin to shake.
* Tap the "x" in the corner of the application you want to delete.
* Tap Delete.
* Press the Home button.
* Download the application again, either from your iPhone or your
desktop computer (there will be no additional charge for the
re-download)

If an application freezes or becomes unresponsive, force-quit it by
holding down the home button for several seconds. This can eliminate
problematic or hung processes that might be draining the battery.

To prevent future crashes, keep adequate free space on the iPhone's
internal memory. Like its desktop relative Mac OS X, the iPhone's OS X
operating system needs some head-room on the internal flash memory in
order to operateproperly. Try keeping at least 10% of the total space
free to potentially prevent some crashes in applications, freezes and
other problems. (That would be 1.6GB FREE on a 16GB iPhone)

As a last resort, go to the Settings application, tap General then
select the Erase All Content and Settings. This will delete all media
and data on the iPhone, as well as recent calls, etc., and all other
settings. If you perform this operation and stop experiencing crashes,
you might have problematic data being synchronized to the iPhone that
is automatically put back when the phone is restored. In this case,
you might want to go to iTunes, select Preferences from the File menu,
then iPhone and delete your backed up iPhone settings — this includes
text messages, notes, call history, contact favorites, sound settings,
widget settings. Again, one or more of these data might be
problematic.

Finding out what caused crashes Just like Mac OS X, the iPhone
generates crash reports when things go wrong. These files are sent
back to your computer whenever the iPhone is connected and
synchronized with iTunes. In Mac OS X, they're located in
/Library/Logs/Crashreporter/MobileDevice/.

dgates

On Thu, 27 Nov 2008 14:35:50 -0800, nospam <nospam@nospam.invalid>
wrote:

>In article <1d1ui417fr33ipqt6kdgjod0h396paun2f@4ax.com>, dgates
><dgates@somedomain.com> wrote:
>
>> Now that I'm downloading apps from the app store, I have a few
>> questions that I'm hoping someone can help me with.
>>
>> 1. If an app isn't running, then just having it installed on my iPhone
>> won't do anything to affect some app I'm currently running, will it?
>
>nope, it just takes up space.
>
>> 2. When I leave an app to go to the Home screen, have I compeletely
>> closed that app? Or is it in some way still running "in the
>> background?" What if it was in the middle of sending or receiving
>> data when I closed it?
>
>pressing home is basically a quit message to the app. depending on how
>it's written, it may finish what it's doing before quitting.
>
>> 3. If an app freezes or behaves badly and I close it -- either with a
>> quick push to the Home button or a 6-second push to the Home button --
>> is that app now safely out of my memory? Am I now "clean," or should
>> I restart the whole iPhone to make sure everything is "clean?"
>
>it's 'clean', however, a reboot might solve the crashing problem.
>without actually seeing crash logs, it's just a guess why it froze and
>if the app is buggy, it may crash again.

That makes sense, but will the fact that it crashed, and I had to shut
it down, leave my iPhone in a state that will cause *other* apps to
also have problems?

Let's say I run some app called CrappyMazeVoicePuzzle and it crashes,
so I force it to shut. Should I be worried that a few minutes later
BeeJiveIM or Pandora will have problems because I didn't restart after
the trouble with CrappyMazeVoicePuzzle?


>> By the way, is this newsgroup the best place to ask questions like
>> this? Or is there some Apple-related forum or website that would be
>> better for some reason?
>
>there's a discussion forum at apple as well as iphone related web sites.


Thanks for all the info.

Jon Ribbens

On 2008-11-28, dgates <dgates@somedomain.com> wrote:
> 1. If an app isn't running, then just having it installed on my iPhone
> won't do anything to affect some app I'm currently running, will it?
>
> 2. When I leave an app to go to the Home screen, have I compeletely
> closed that app? Or is it in some way still running "in the
> background?"

The answer to both your questions is "it really shouldn't".
Apple decided, with good reason, that 3rd party apps should not be
allowed to run in the background, so pressing the Button quits such
apps completely. Theoretically there could be some sort of bug such
that running a previous app could affect a subsequent app, but I'd
be slightly surprised to be honest.

JKconey

"dgates" <dgates@somedomain.com> wrote in message
news:1d1ui417fr33ipqt6kdgjod0h396paun2f@4ax.com...
>
> Now that I'm downloading apps from the app store, I have a few
> questions that I'm hoping someone can help me with.
>
>
> 1. If an app isn't running, then just having it installed on my iPhone
> won't do anything to affect some app I'm currently running, will it?
>


A far as I know our IPhones can only do one thing at a time. That goes
for running an app, or installing another one. Once you DL an app, the one
currently running closes.



--
"Money Won is Twice as Sweet as Money Earned" ... Fast Eddie Felson

JK
www.MyConeyIslandMemories.com

nospam

In article <98iui4drmrgs4u0c9rei9ff22cdsioe9b9@4ax.com>, dgates
<dgates@somedomain.com> wrote:

> That makes sense, but will the fact that it crashed, and I had to shut
> it down, leave my iPhone in a state that will cause *other* apps to
> also have problems?

every app is sandboxed, so whatever it does will not affect other apps
or the phone itself.

> Let's say I run some app called CrappyMazeVoicePuzzle and it crashes,
> so I force it to shut. Should I be worried that a few minutes later
> BeeJiveIM or Pandora will have problems because I didn't restart after
> the trouble with CrappyMazeVoicePuzzle?

no.

NightStalker

In article <492f77dc$0$14310$607ed4bc@cv.net>, spam@aol.com says...
>
> "dgates" <dgates@somedomain.com> wrote in message
> news:1d1ui417fr33ipqt6kdgjod0h396paun2f@4ax.com...
> >
> > Now that I'm downloading apps from the app store, I have a few
> > questions that I'm hoping someone can help me with.
> >
> >
> > 1. If an app isn't running, then just having it installed on my iPhone
> > won't do anything to affect some app I'm currently running, will it?
> >
>
>
> A far as I know our IPhones can only do one thing at a time. That goes
> for running an app, or installing another one. Once you DL an app, the one
> currently running closes.
>
>
>
>

With the exception of iPod of course. When playing music on the iPod
app, it will continue to play in the background while doing some other
things. Mainly with things that don't require access to the sound chip.

So you need to remember to hit the pause before quitting iPod or else it
WILL continue to play in the background, and if you have the volume
right down, you may be unaware of it running (or earphones plugged in
and scrunched up in the pocket, like I did). One flat battery
later.....

--

NightStalker

dgates

On Fri, 28 Nov 2008 00:16:51 -0800, nospam <nospam@nospam.invalid>
wrote:

>In article <98iui4drmrgs4u0c9rei9ff22cdsioe9b9@4ax.com>, dgates
><dgates@somedomain.com> wrote:
>
>> That makes sense, but will the fact that it crashed, and I had to shut
>> it down, leave my iPhone in a state that will cause *other* apps to
>> also have problems?
>
>every app is sandboxed, so whatever it does will not affect other apps
>or the phone itself.
>
>> Let's say I run some app called CrappyMazeVoicePuzzle and it crashes,
>> so I force it to shut. Should I be worried that a few minutes later
>> BeeJiveIM or Pandora will have problems because I didn't restart after
>> the trouble with CrappyMazeVoicePuzzle?
>
>no.


That's what I thought. That's why I was surprised, when I installed
and launched iPhlix today, to read this message:

=================================

Low Memory

Your device's memory is running
low, which may cause iPhlix to
crash. Restarting your device can
help with this problem.

=================================

Any thoughts on that?