I currently am using Ruby and want to run the iphone simulator to run a particular program that one of our developers built.
Has anyone tried running an iphone simulator to run a particular program.
Take a look at the ios-sim project on GitHub.
It does exactly what you are looking for but is written in Objective-C. However, if you are familiar with Objective-C (and I'm assuming you are since you're talking about iOS apps) then it should be pretty trivial to port if it's essential you need to use Ruby. Otherwise you could just use as is.
I was just wondering if anyone knows of any articles relating to upgrading an iPhone application from 3.0 to iOS4. (Thanks for this iWasRobbed).
While the application still runs on iOS4, it will not run on the iPhone 4, but does on my iPhone 3G.
When I deploy the app on the iPhone 4, the Default screen loads and it will sit there hanging. The only inclination towards a problem I get is this warning:
warning: UUID mismatch detected with the loaded library - on disk is:
/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.0.sdk/System/Library/Frameworks/UIKit.framework/UIKit
warning: UUID mismatch detected with the loaded library - on disk is:
/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.0.sdk/System/Library/PrivateFrameworks/DataAccessExpress.framework/DataAccessExpress
Thanks
James
James,
Apple has provided this checklist: http://developer.apple.com/iphone/checklist/
It generally should not be that big of an issue. Typically, you just set the baseline SDK as 4.0 and the deployment target as either 4.0 or something 3.0+.
If it is not running on an iPhone 4, you may wish to explain further what specifically it is doing or not doing when you attempt to run it on that device. Keep in mind that all apps (for the most part) that were designed to run on 3.0 and above will typically run well on an iPhone 4.
There might be some issues with deprecated methods, so make sure you resolve those prior to installing and running the app. You should get a compiler warning for any of those, if not check your target settings and there should be a checkbox for it.
Other than that, I'm not sure what else would prevent you without understanding further details of your project.
As additional information, you should really look into the WWDC 2010 video called "Future Proofing Your Applications" (watching it now :)
That is most likely a mismatch between what iOS your iPhone 4 is running and what SDK you're using in Xcode. The UUIDs are mismatched because the iPhone 4 is using a different version SDK to what you've coded in.
Solution, install the latest SDK and make sure your iPhone matches this. The latest out is 4.1
I had the same problem and think I have solved it because the problem has gone away.
Firstly I deleted the build folder. Then I Installed the latest version of ios (4.1 in this case) onto my iphone through itunes. Afterwards i installed the latest xcode and iphone sdk package from the apple devlopers site.
This in itself probably fixed the problem but just to be sure I added a new provisioning profile for the phone on my computer and everything worked great afterwards.
Hope that helps
I recently inherited an iPhone app. The original developer did not understand memory management and well the app works in simlulator but not in on old iPhone (lots of crashses). Do you have any thoughts on the process by which I can save the app?
Can I utilize or create any unittest to find memory leaks and make the process 'scientific'?
Thanks
Yes! Use Clang! Here is a good tutorial showing the benefits: http://iphonedevelopment.blogspot.com/2009/02/clang-static-analyzer.html
However, it should be installed if you have a newer SDK.
Since the Clang Static Analyzer is now built-in to Xcode on Snow Leopard, it's trivial to use it. Select Build -> Build & Analyze to see any memory problems Clang detects (hint: it will find pretty much all of them).
I know there is no official SDK for Windows, which is very annoying. Is there any way to develop applications on a Windows computer, other than somehow running a Mac OS in VMware? I know you can do it with Xcode, but that is also only for Mac OS X. Google searches have revealed absolutely nothing.
If I cannot use the SDK or Xcode, is there any way I can just check syntax or something and just make my code in Notepad and save it with the proper extension? I have no idea whether or not I would be able to do that, probably because I have never even tried the SDK and probably never will without buying a Mac.
I looked into this before buying a Mac Mini. The answer is, essentially, no. You pretty much have to buy a Leopard Mac to do iPhone SDK development for apps that run on non-jailbroken iPhones.
Not that it's 100% impossible, but it's 99.99% unreasonable. Like changing light bulbs with your feet.
Not only do you have to be in Xcode, but you have to get certificates into the Keychain manager to be able to have Xcode and the iPhone communicate. And you have to set all kinds of setting in Xcode just right.
You could easily build an app using PhoneGap or Appcelerators Titanium Mobile.
Both of these essentially act as a WebKit wrapper, so you can build your application with HTML/CSS/JavaScript. It's a pretty portable solution, too, but you are somewhat limited in what you can make - i.e, no intensive rendering or anything. It really all depends on what you're looking to do.
You could do what saurik of Cydia does, and write your code on a PC then build it on the iPhone itself (it is a Mac, technically!) after you jailbreak it. However, you don't get Interface Builder, so you're basically creating UIs in code by hand. It'd also be pretty tough to actually submit your app without a Mac.
No, you must have an Intel Mac of some sort. I went to Best Buy and got a 24" iMac with 4G RAM for $1499 using their 18 month no interest promotion. I pay a minimum payment of something like $16 a month. As long as I pay the entire thing off within 18 months - no interest. That was the only way I was getting into iPhone development.
There is another solution if you want to develop in C/C++. http://www.DragonFireSDK.com will allow you to build iPhone applications in Visual Studio on Windows. It's worth a look-see for sure.
Technically you can write code in a .NET language and use the Mono Framework (http://www.mono-project.com/) to run it on the iPhone. I haven't ever seen someone do this from scratch, but the folks that write the Unity Game Development platform (http://unity3d.com/) use it to make their games iPhone-compatible. The game itself is written in .NET, and then they provide an iPhone shell with the Mono frameworks that allows everything to run on the iPhone. I don't know whether they've contributed all of their modifications to Mono back to the open-source repository, but if you're serious about writing iPhone apps outside the Mac environment, it might be possible.
That said, I think you could dump weeks into getting that to work, and it might be best to invest in a Mac instead :-)
This really comes down to how much you value your time. As the other posters have mentioned, there are a couple of ways you can build iPhone apps without a Mac. However, you are jumping through serious hoops, and it'll be much more difficult and take longer than it would with the proper development chain.
You can buy a second-hand Mac Mini for a couple of hundred bucks on eBay. If you're serious about doing iPhone development you'll make this back in saved time very quickly.
No one has brought up the hackintosh. If you have supported hardware it might be the best option.
There are two ways:
If you are patient (requires Ubuntu corral pc and Android SDK and some heavy terminal work to get it all set up). See Using the 3.0 SDK without paying for the priviledge.
If you are immoral (requires Mac OS X Leopard and virtualization, both only obtainable through great expense or pirating) - remove space from the following link.
htt p://iphonewo rld. codinghut.com /2009/07/using-the-3-0-sdk-without-paying-for-the-priviledge/
I use the Ubuntu method myself.
http://maniacdev.com/2010/01/iphone-development-windows-options-available/
check this website they have shown many solutions .
Phonegap
Titanium etc.
I'm writing an iPhone app that needs direct access to the camera. Since it is in-house, I have no qualms about using the full set of headers and private frameworks.
I included and the PhotoLibrary framework in the application. It compiles for the 2.0 firmware, and I can put it on the device and run it. As soon as it is started, however, it quits and returns to the home screen.
I think that the PhotoLibrary framework is somehow not being loaded or something similar.
I would post some debugging output, but I don't actually have the phone yet.
Thanks!
That might or might not be the problem. The iPhone simulator lets you get away with a lot of stuff that doesn't work on an actual device-- there's any number of classes that a simulator app can use that don't exist on the phone (e.g. NSXMLDocument, available on Mac OS X and iPhone simulator but not actual iPhones). Get the phone, run the app, and use Xcode to look at the phone's system console to see why it's crashing.
Thanks for all the help.
It turns out that I was trying to use classes from the iPhone 2.0 SDK with an iPhone that has 2.2.1. Thus, it would compile correctly when I set the device to 2.0 in Xcode, but would fail on the iPhone because the old classes were no longer there.
I fixed my problem by getting the classes from the 2.2.1 SDK. Now my program runs fine on the iPhone.