I have an iPhone 3GS, which I am using for testing etc. Unfortunately its Power button (the one on top right) stopped working, thanks to my son's attempts at baseball pitching practice. Now, if I have to reboot the phone, all I can do is let the battery drain out and then reconnect power. Is it possible to do something programmatically (I will not, of course, submit this as an iPhone App!) without jailbreaking, so I can restart the iPhone when needed? I have an Apple membership so I can write and run these apps on the phone. Any suggestions are appreciated.
I am running iOS 5.1.1 on it currently.
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I would like you to help me here.
I'm developing an app that works in the background. It's a location-based app and I think I'm going crazy because when I'm debugging the app in the device it works perfectly, I make it sleep I wake it up and I works as expected. Then I unplug the device from the computer and I put in my pocket and whenever I open it, it sometimes works and other it doesn't, I'm talking about several hours in the background.
Are there any known issues about this? My device is running iOS 5.0 and I'm developing for iOS 4.0
Thanks
Applications in the background are handled by iOS. Therefore if iOS "thinks" that it needs memory it maybe frees some of the memory your app needs to run.
Have you tried to look into it with Instruments?
I've written a fairly basic app for the iPhone, which I would like to test on at least one device and then get it onto the market place.
I don't need a data plan, so I'm considering buying an iPod touch, but I understand it doesn't have a camera, video, compass. While I don't need those for my current app, I might for a future one, nothing for sure there.
My concern about purchasing an iPhone, used or new, is that I believe I won't be able to use it without a sim card unless I jailbreak it. I'd prefer not to get involved with jailbreaking, as I'm unclear how it would my efforts to test the app on the device and/or get the app onto the app store.
If I get a new iPhone, I would have to cancel the contract immediately, and my same concern about the lack of a sim card would apply.
I'd be interested in people's experience with this issue, e.g. starting out with iPhone apps and not having an iPhone, is with this issue.
The newest iPod Touch does have a camera: http://www.apple.com/ipodtouch/
You should be able to test nearly everything you'd need to test on an iPod Touch.
Also, if you want to support older devices, it might be a good idea to also pick up a used, older, iPod Touch on eBay or somewhere, so you can test on a non-Retina display.
I have development going on without an iPhone but is preferred to develop with a device cause you could test your codes once in awhile. iPod Touch 4 does have camera. Anyway i think iPhone would still be able to function properly without a sim card just that you can't call. Otherwise getting an iPad is not that bad, since you can run both iPad and iPhone apps in iPad.
You may want to get the oldest slowest model of device running the oldest version of iOS on which you want you apps to be compatible. This may also be a low cost way to get into testing on devices. If your apps are commercially successful, you will be able to afford acquiring more newer test devices, but the old one may be the most valuable one for app testing purposes.
I have been using my old iPhone 3G for developement, mostly because it allows me to see how my code runs on one of the slowest devices out there.
The phone is not currently signed up with AT&T and it still works fine for development. For data access the wifi works fine without a carrier account. It also has the camera and (basic) GPS/mapping.
I could probably pick up a used iPhone 3G off one of the auction site relatively cheaply.
So, is it possible to simulate the iPhone (arguably future iPad) camera in Xcode using the built in camera on my MacBook?
I read some similar posts, but from the answers I feel it was left up in the air if it can or can not...
Thanks in advance!
No, you cannot. There is no camera app installed, and calling the camera related classes normally creates a crash. You can however sync photos to it.
Short answer: Never use the simulator. It's a joke. I think the only reason they put it in there is so that people can fiddle with stuff before they pay 100 dollars for the developer program.
You cannot simulate the camera using just iOS SDK frameworks while staying within the app sandbox.
However, on the Mac Simulator, you CAN reach outside the sandbox and connect to another camera server Mac application or process, which you would have to develop. So it's technically possible using Mac frameworks and processes outside of the iOS environment for debug purposes to get a camera view inside a Simulated but-non-pure iOS app. Not for dummies though...
I'm thinking of upgrading my iPhone 3G and was wondering if I can continue to use it for appstore application development & testing after I do so. I don't want to continue to pay for an additional line and data plan, and I wouldn't be interested in using is as a phone. Would I be able to provision and debug on it? Would it have to be jailbroken?
You definitely can. I'm currently using my deactivated 2G for development. Aside from the 100 Ad-Hoc devices you can test on, you are also allowed to provision a number of phones that you can build directly to, and it doesn't matter if they are deactivated.
as I think, your phone would function the same as iPod Touch (plus Camera). And since you can use iPod Touch for development, so you can also use your deactivated iPhone.
I'm interested in developing software for the iPhone camera, but I don't currently own an iPhone and don't really want to pay for service. If I were just doing general app development, I'd probably just pick up an iPod Touch, but the Touch doesn't have a camera.
I know I can walk into the AT&T store, buy an iPhone and immediately cancel service. But what can I do with the resulting iPhone? Can I:
... develop apps for it using the native SDK?
... download apps from the app store (over wifi)?
... use it for everything that I can do with an iPod Touch?
More generally, is this just a bad idea for some other reason?
You could jailbreak it and use it on a non-standard plan and pay less money.
You can still develop on a phone after it's jailbroken. You can also still develop on a phone after it has been unlocked. The difference is important:
Jailbreak: You can install applications not available in the app store.
Unlock: you can run the phone on other networks besides it's default carrier (AT&T when in the USA).
Note that you cannot at this time unlock an iPhone 3g running 2.2.1, which it almost definitely will be if you buy it new. You can jailbreak both iPhone and iPhone 3G.
Also be aware that if you buy a new phone, AT&T will charge you $200 to get OUT of your new contract. I think that goes down by 10 or 20$ each month, so that after a year, it's considerably less costly to get out of the plan.
What I suggest is buying a first generation iPhone on ebay or craigslist. First generation iPhones can all be unlocked, irrespective of whether the previous owner put 2.2.1 on them. Also they are much cheaper, have the camera and are totally fine for software development. I was able to find decent first generation iPhones in Seattle just 2 months ago for about $250 - $350 dollars depending on details. Unlocking/Jailbreaking takes a matter of minutes with QuickPwn, and the phone works great as a development platform.
I believe your iPhone must be activated to be used as a target device in xcode. While it would be activated after purchase you would have problems if you cancelled your account and then needed to restore it at somepoint.
If you do wish to support the camera its possible to develop on an iPod Touch - the mechanism for taking a photo is identical to selecting a picture from the library, you specify the source (camera/library) and the rest is handled by the OS with your code receiving the final picture.
If your app is going to be very camera-centric you should invest in an iPhone, but if it's for minor functionality you can probably get by with a touch.
I believe your iPhone must be
activated to be used as a target
device in xcode. While it would be
activated after purchase you would
have problems if you cancelled your
account and then needed to restore it
at somepoint.
No it does not. You can jailbreak to start and it will work fine.