iPad doesn't support multitasking

[jsh1120]

I have Xsysinfo, too, but thought it only "provided" info.

How do I use it to kill suspended apps? Or does that only work on the iPad2?

A recent update eliminated the option to kill apps. However, I just became aware that an even newer update reinstated the "kill" functionality. Pull down on the right side panel ("Usage") and (at least on the iPad 2), the inactive apps are killed.

 

[Mj663]

The ipad can play music and radio in the background while you surf the internet or get email. This is multitasking.
You can talk on the phone find a restaurant and email it to a friend if you are on the ATT network, what more would you want??

i do not think Verizon supports data and voice at the same time.

 

[jsh1120]

The ipad can play music and radio in the background while you surf the internet or get email. This is multitasking.
You can talk on the phone find a restaurant and email it to a friend if you are on the ATT network, what more would you want??

i do not think Verizon supports data and voice at the same time.

What more? Background processing from any app. Automatically updated widgets. Multiple windows. iOS does support multitasking. Apple has intentionally limited it in order to avoid overloading the hardware on which iOS runs. Your reference to talking and surfing simultaneously is not an example of "multitasking." It's a feature of the GSM network used by AT&T versus the CDMA network of Verizon. The former uses a "packet" technology to send/receive small packages of data or voice over the cellular network. The latter opens a circuit for either data or voice and maintains it until the call/data transmission is completed. Each approach has strengths and weaknesses but it is fundamentally different from "multitasking."

 

[thewitt]

Apple intentionally limits background tasks to preserve battery life.

 

[Yptcn]

I just read on iDownload that multi touch gestures we got would be remouved from iPad 1 :-(((((((

Sent from my iPad using iPF

 

[Mickey330]

Multigestures are included in iOS 5.

See here (scroll down almost to the bottom): Apple - iOS 5 - See new features included in iOS 5.

Marilyn

 

[Yptcn]

Thank you , at least I can reath a bit better while I downloading Lion ;-))))

Sent from my iPad using iPF

 

[Yptcn]

Yes, they are included in iOS5.

Just a few more days...

Marilyn

After updating last night , no more gestures on iPad 1:-((
I tried to reinstall via Xcode but that doesn't work anymore .

 

[Mickey330]

Yeah, I have to apologize for this. I had read on Apple's web site that multi-gestures would be available for the iPad on iOS5. What Apple neglected to mention was that it was only for the iPad2. And no, I don't know the reason why.

And, as you've noticed, Yptcn, the old "hack" of using xcode doesn't work anymore, either. Dang it...

I am sorry for posting misleading information. My bad.

Marilyn

 

[s2mikey]

While its true that the iPad 2 doesnt support full- muti-tasking, its easy enough IMO to just bring up the app I need if I need it. I tend to be doing just one thing on this unit at a time anyways. And, like others have said, you can play tunes in the background whie doing other stuff so thats good enough for me.

I DO wish though that when you "closed" an app that it fully closed down and didnt hang around in the quick-launch area or whatever you call it. Those apps must be taking up resources...right?

 

[jsh1120]

While its true that the iPad 2 doesnt support full- muti-tasking, its easy enough IMO to just bring up the app I need if I need it. I tend to be doing just one thing on this unit at a time anyways. And, like others have said, you can play tunes in the background whie doing other stuff so thats good enough for me.

I DO wish though that when you "closed" an app that it fully closed down and didnt hang around in the quick-launch area or whatever you call it. Those apps must be taking up resources...right?

Well, not really. At least not enough to matter. iOS DOES do multitasking (as others have mentioned.) It's just that it's limited to a few areas of functionality (music, as you note, is the most used.) When applications are "suspended," they consume some very limited memory slots (ram) but they don't impact cpu cycles. (processing.) I suppose it's possible to have so many suspended applications that the 512K of ram in the iPad 2 could not function, but I strongly suspect that (a) the memory footprint is so tiny that it's unlikely to occur and (b) Apple has a way to offload the oldest suspended app data to the storage of the iPad.

You'll note that you cannot, for example, watch a video and edit a document at the same time. That's partly because streaming audio is a relatively light load but streaming and displaying video would be a much heavier load on the processor. But it's also because without separate resizable windows you can't do that anyway. And even if you could, it would make very little sense on a 9" screen.

I strongly suspect you don't need to worry about suspended apps taking up resources on an iPad 2. You'd know if your iPad's response slows (suggesting swapping) or an app closes unexpectedly. But if you want to keep as much ram free as possible you can get an app like Xsysinfo that will "clear" memory manually (without having to work your way down the line marking the little "x" on each app you've run.) Likewise, of course, rebooting the iPad will clear your memory (ram).

P.S. This whole discussion is needlessly confused by the fact that Apple does not distinguish (or talk much about) ram versus storage. They call the entire data storage of an iPad "memory" when in fact, only 512K is "rapid access memory." (RAM). The rest is the equivalent of a hard disk or an SSD.

 

[stevnim]

Background information for the discussion. Multitasking services defined when iPhone 4, iOS 4 came out.

http://www.tipb.com/2010/04/08/apple-announces-multitasking-iphone-40/

Excerpted from the article:

Inside, Apple’s SVP of iPhone Software, Scott Forstall explained they looked at existing apps and distilled 7 services those apps needed to run in background, then provided them via API.

According to Apple, these are:
Background audio – Allows your app to play audio continuously. So customers can listen to your app while they surf the web, play games, and more.

Voice over iP – Your VoIP apps can now be even better. Users can now receive VoIP calls and have conversations while using another app. Your users can even receive calls when their phones are locked in their pocket.

Background location – Navigation apps can now continue to guide users who are listening to their iPods, or using other apps. iPhone OS 4 also provides a new and battery efficient way to monitor location when users move between cell towers. This is a great way for your social networking apps to keep track of users and their friends’ locations.

Push notifications – Receive alerts from your remote servers even when your app isn’t running.

Local notifications – Your app can now alert users of scheduled events and alarms in the background, no servers required.

Task finishing – If your app is in mid-task when your customer leaves it, the app can now keep running to finish the task.

Fast app switching – All developers should take advantage of this. This will allow users to leave your app and come right back to where they were when they left – no more having to reload the app.

 

[s2mikey]

Well, not really. At least not enough to matter. iOS DOES do multitasking (as others have mentioned.) It's just that it's limited to a few areas of functionality (music, as you note, is the most used.) When applications are "suspended," they consume some very limited memory slots (ram) but they don't impact cpu cycles. (processing.) I suppose it's possible to have so many suspended applications that the 512K of ram in the iPad 2 could not function, but I strongly suspect that (a) the memory footprint is so tiny that it's unlikely to occur and (b) Apple has a way to offload the oldest suspended app data to the storage of the iPad.

You'll note that you cannot, for example, watch a video and edit a document at the same time. That's partly because streaming audio is a relatively light load but streaming and displaying video would be a much heavier load on the processor. But it's also because without separate resizable windows you can't do that anyway. And even if you could, it would make very little sense on a 9" screen.

I strongly suspect you don't need to worry about suspended apps taking up resources on an iPad 2. You'd know if your iPad's response slows (suggesting swapping) or an app closes unexpectedly. But if you want to keep as much ram free as possible you can get an app like Xsysinfo that will "clear" memory manually (without having to work your way down the line marking the little "x" on each app you've run.) Likewise, of course, rebooting the iPad will clear your memory (ram).

P.S. This whole discussion is needlessly confused by the fact that Apple does not distinguish (or talk much about) ram versus storage. They call the entire data storage of an iPad "memory" when in fact, only 512K is "rapid access memory." (RAM). The rest is the equivalent of a hard disk or an SSD.

Thanks for the informative post. I might take a look at that app you mentioned - I tend to be anal about things like open apps hanging around. Id rather them go away if Im done with them. Its too bad there wasnt a way to either truly shut down an app or leave it suspended. There are times when I DO want the app left in the state it was in when I killed it and times when you just want it gone. Maybe a future feature? Memory/App Management

 

[iMama]

The multitasking feature in iPad/iPhone still very limited (ex. could not get an accelerometer in background)