I'm currently using xCode 5.1 and Objective-C to learn how to make apps and I'm wondering what would happen to my projects if I update from 5.1 to 6. Will my projects still run or will I have to code everything in Swift?
Your projects should still run if they were running in previous versions. What will most likely happen is that you will be bombarded by warnings and alerts about deprecated code and syntax. You're going to get a lot of them with an upgrade that big.
For the most part, XCode should tell you exactly what needs to be upgraded. It shouldn't change any of your code. But it's always good practice to back up your project.
Good luck!
See also : https://stackoverflow.com/a/24005402/4329655
Related
so I build up an app with React Native (v 0.64). And I made up ios build using Xcode (version 12.3). The app gets build and works without any crash or bug - on simulator and also on real iPhone (latest iOS versions 14.3).
Despite working everything fine, I get during buildtime a LOT of warnings (196). Mostly they are of a two kinds- Nullability issue or Deprecations.
I got all my node modules updated to latest versions and I think the podfile is okay too. But the warnings appear at almost every library I am using, so it makes me assume that I am missing some more general point (maybe wrong podfile or something like that). What I am missing?
I am about to publish on App store in next days (after working several weeks on this project) and this makes me worried so much. I attach screen from the Xcode of mentioned errors (part of those). Any help would be much appreciated in advance. Thank you.
I never had a problem building with Meteor and XCode before, but after upgrading to Meteor 1.4.2.3 with React I'm getting a whole lot of build issues. XCode has asked me if I wanted to upgrade to Swift, but I've been reluctant afraid that it may stop previous builds from other projects from working.
I converted to swift, but I still am having many errors although less then before. Is there an easy fix for this?
Apple have upgraded to xcode 8 now and that has caused all kinds of problems with new versions of swift which are not compatible. This is the case in many areas not just meteor projects. The meteor webapp has been updated to allow for this so I would recommend that you go to xcode 8 as well.
Given that meteor generates all of the code you shouldn't need to worry about compatibility
We have latest Xcode(7.2) having Swift(2.1.1) installed in few mac systems. Here developer didn't find any errors in his code which was checked in, but the same code used at other end were observing errors(most of them related unwrapping variables).
verified all settings and version details not able to find any difference. Any help or suggestions will be appreciated. Thanks
Most likely the machine "at the other end" is not running Xcode 7.2. There is a tool for converting Swift 1.x to 2.x, but not the other direction. But without code sample illustrating the problem, we can't help you much. In addition to shifting unwrapping conventions, there is new syntax later versions of Swift (e.g. guard, error throwing, etc.).
But, if you're going to share a Swift project amongst multiple developers, you probably just want to make sure everyone is using the same version of Xcode. And with Swift progressing as quickly as it is, you might want to encourage everyone to use the latest production version of Xcode.
In one project I'm using I can't set breakpoints in Swift code, Xcode always crashes when reaching one of them, doesn't matter if it's a "manual" or an exception breakpoint.
In other projects everything works as expected, only for one project Xcode 6.4 (6E35b) always crashes.
I tried cleaning, deleting derived data, resetting simulator, restarting Xcode/Mac - nothing helped at all.
Anyone else experiencing this problem and hopefully knows what helps?
EDIT
Seems only to be the case on one machine (Xcode 6.4, 10.10.5), but not on the other (Xcode 6.4, El Capitan). But as I mentioned in the comments, reinstalling Xcode didn't help, are there some other preferences I could reset/delete?
EDIT2
Here's the Xcode crash log file:
https://dl.dropboxusercontent.com/u/119600/Xcode_2015-08-12-074655_Stefans-iMac.crash
I would try uninstalling and reinstalling Xcode to see if it helps... I've heard of successes with this technique for similar issues.
Just delete the entire Xcode.app from /Applications, and reinstall from the .dmg. If you're not certain of the binaries and have time / bandwidth, consider re-downloading the .dmg.
If that doesn't work, try the following source control tricks (substitute "your favorite revision control" for "git"):
Try purging all objects not in source code control
Another approach: Check out the app again into a fresh repository (this will get even the files that may have been committed but ignored later).
If not under source code control, grab a .gitignore from here and add it to git, then check out into another directory (this will leave everything but source, interface builder, project files and resources/assets behind).
I'd suggest moving the breakpoint code to another location (such as making a function call and breaking either before or inside the function). However, if all Swift code has this problem, that may not work.
Finally, after making an interim commit (to roll back to), try it in Xcode 7 beta. Bit of a hassle because you have to upgrade to Swift 2.0, but if you keep the deployment target the same no iOS target changes are needed.
If this really is a burden and/or it's a small project, you could try creating a new project and migrating the files and storyboard over, but likely this is too much effort.
Either way, since you note it's pretty much all breakpoints in Swift code, file a bug with Apple's bug reporter. They really need to hear about issues such as this, since you don't seem to be alone in having this issue.
EDIT: Where are others seeing this issue?
Maybe we can see commonality -- since this is only reported in Swift projects (so far). A colleague has seen this problem with breakpoints (as well as stepping through code) in Xcode 6.4 on 10.10.4. (I've seen Xcode 6.4 crashes in the past as well).
I see OS version 10.10.5 mentioned as a target where this happens (#swalkner); is this a beta? If OS 10.10.4/5 is the only place we see this, it might be significant. If it's a project/OS interaction, it might be tricky to reproduce / fix, but I'd encourage everyone to submit detailed bug reports to Apple (maybe even link this post).
Some points to note if you're seeing this:
Operating System Version
Hardware
Target: Simulator vs. Hardware; iOS vs WatchKit app.
Target SDK version(s)
Swift only? Or on an Objective-C only project? Mixed?
Only one project, or several?
It's a longshot, but let me know if it's working:
uncheck the "Always show Dissasembly" check
Debug > Debug Workflow > Always Show Disassembly
In older versions of Xcode (<6.1):
Product > Debug Workflow > Show Disassembly When Debugging
I've just spent the past few hours trying to solve exactly the same issue.
I thought at first, it had started due to installing Xcode 7 on the same machine as Xcode 6.4. The problem certainly coincided.
However, due to having version control, I could look and see what files had changed since opening the project with Xcode 7.
The images.xcassets file had changed. Reverting this file back has stopped Xcode from crashing each time it hit a breakpoint.
I'm not sure whether this helps at all, but definitely look at images.xcassets and if needs be, delete it, recreate it and ensure it's setup 100%. It certainly fixed my issue.
I wonder whether I should start development of a new iOS project in Xcode 4 or 3.2 - on one hand, I know 3.2 (a little), there is lots of info about it out there, and it's stable and proven. On the other hand, Xcode 4 brings some improvements as well. Are the newer previews of Xcode 4 ready for prime time, or are they still too buggy?
I'm especially interested in issues with (and recommendations of) externally hosted repositories, as I was not very happy with how Xcode 3.2 played with the Subversion repository in my last project.
Which one to choose, and which (preferably free and externally hosted) repository to match?
Today (3rd Feb 2011) Apple released the GM-Seed of xcode4. It's now ready for usage and you can compile your apps and release to the app-store. So if you are new with xcode, I would suggest using xcode4.
Why?
The new compiler has a lot of optimizations done. The compiler (as far as I can see the results) generates faster code. It's big fun!
The new Userinterface is more reliable. It makes your development a lot faster!
2a. Interface builder is now integrated. You can "drag and drop" your userinterface Item using the "ctrl"-key into your code and xcode creates the source for you! This accelerates creation of userinterfaces a lot!
git support has been added to sourcecontrol, which makes development in teams easier
The new LLVM compiler shows errors immediately while coding. And it displays errors, which xcode3 never mentioned
In xcode4 Apple changed a lot! So if you start with xcode3, you will have a new learning curve with xcode 4. For newbs I suggest: Download the xcode4 goldmaster and get startet with xcode4!
I second JackPearse's endorsement of Xcode 4, with one caveat. Been using Xcode 4 for a couple of days and am really starting to like it. Particularly like the way it shows the changes in each file as you commit. Unfortunately, when you delete a file, it forgets that it will need to be deleted in the repository as well. But the big BUT right now is that Xcode 4 will immediately crash the moment you try to do any Core Data modeling. See also XCode 4 Data Model Versioning bug? here on Stack Overflow. So, if you plan to use Core Data, you'll need to keep Xcode 3 around as well until they fix this.