Problem with Git Repository in Xcode 4 - iphone

In my iPhone app, I am using the in-built Git repository of Xcode 4 so that all the team members can work on the same project.
Now the problem is that even after I commit my changes to the repository, It still shows modified (M) symbol in front of the committed file.
What could be wrong?
I want to ensure that once I commit the changes it should not show "M" for that file.
Is there any setting which I have to do to make it work fine?
What can be done?

The built-in Git repository is a local repository only. How do you share that with your team? If you hooked that repository to GitHub, for example, you will experience problems as the implementation is not 100% reliable. I would use the command line in this case and git add/commit/push the changes. There are discussions and tutorials in the GitHub Blog.

Without knowing what you're doing in Xcode, or how you have set up your repository all I can say is that you should check the status of your repository in the command line. Maybe your commit fails for some reason and you're not seeing the message in Xcode.
Try git status to see what state your repository is in.
Try git add <your files> and then git commit to see if you can actually commit your changes.

Did you stage your files before committing (git add)? Otherwise the commit will do nothing.

You would need to Push the changes in Xcode 4 to remove the "M" or modified status. If you don't have the command line mojo like most people, you can just use the functions built in as they were intended.
It won't solve your issue of sharing as it is only a local repo. I'm finding that even using Xcode 4 with an outside repo, you need to learn some command line stuff or it just isn't going to work, or at the very least kick your butt enough to make you consider giving it up.
*edit
Just to make it clear, the process for Xcode 4 is as follows:
File-->Source Control-->Commit
File-->Source Control-->Push

Related

How to correct «unable to merge unrelated histories»?

I use github desktop (https://desktop.github.com ) while developing the application with several other people, so, for some reason, when trying to merge two branches into one, the error "unable to merge unrelated histories" is displayed for one of the target branches.
What could be the problem?
First of all: You may also be able to find a solution using the search.
Potential reasons for the error message
From: https://komodor.com/learn/how-to-fix-fatal-refusing-to-merge-unrelated-histories-error
Here are some common scenarios where fatal: refusing to merge unrelated histories can occur.
You have a new Git repository with some commits. You then try to pull from an existing remote repo. The merge becomes incompatible because the histories for branch and remote pull are different. Git sees the situation as you trying to merge two completely unrelated branches, and it doesn’t know what to do.
There’s something wrong with the .git directory. It may have been accidentally deleted at some point or got corrupted. This can happen if you’ve cloned or cleaned a project. Here the error occurs because Git doesn’t have the necessary information about your local project’s history.
The branches are at different HEAD positions when you try to push or pull data from a remote repo and cannot be matched due to a lack of commonality.
Options to resolve the issue
The article describes two options on how to resolve/avoid such issues but targets command line /terminal users. I guess I would prefer option 2 over option 1 anyway, also using git in the terminal.
The article explains it like this:
The alternative (and longer) way of fixing refusing to merge unrelated histories issues is to unstage your current commits, stash them, clone your required remote repository, and then place your stashed branch contents into the new clone. This will ensure that any conflicts that you may encounter in the code are addressed before merging and prevent application errors from occurring.
How it (should) work in GitHub Desktop
In GitHub Desktop you should be able to use a modified version of option 2:
To unstage all the files in your last commit, double click staged files. This moves them to the unstaged area. Learn more in this GitHub issue.
To stash your unsaved files, right-click an unstaged file. Learn more about stashing files.
This will give you a clean working tree to pull your remote repository into. Once you’ve successfully pulled into your branch, you can:
unstash your files (see link above again) to reapply them to your current working copy.
commit them as a separate commit.
resolve any file conflicts that you may have.
I hope this explanation adds some clarity. Let me know if there are any wrong or misleading information in my text please.
This problem has several reasons.
But probably your project clone just differs from GitHub (main project).
First of all, save your project (because you probably don't want to code everything again).
Remove repo from GitHub desktop (not GitHub!!!)
Go to the project page in GitHub
Click code, open with GitHub Desktop, and code again.

How to view file changes before pulling through GitHub on RStudio?

I'm transitioning from using Subversion in Eclipse for code management to GitHub in RStudio. It's starting to make sense, but I can't seem to figure out how to pull effectively.
Specifically, if I use the Pull arrow in RStudio, every file change in the repository automatically updates my local files without warning. I can see how many files were updated, but not what changed!
Here are the questions I'm hoping to get help with:
1) Can I preview the repository file changes in RStudio before I pull them locally? With SVN in Eclipse, there was an indicator showing files with a difference, and the option to view side by side.
2) If multiple files have been changed on the repository, is it possible to pull just 1 locally?
3) How can I revert a local file to a previous version?
Right now I've been trying to do this all within RStudio for simplicity. I haven't used things like the GitHub desktop client.
I appreciate the help!
I would suggest you better get used to the git's own tools to stay informed about your repository.
For example you could do following.
Before you pull, check your current commit logs
git log
This should show you how your current commits stack up. Note the latest commit id (first 4-5 letters would usually do)
Now after pulling you can see the difference using following command
git diff --color your_previous_commit_id..HEAD
If you don't like the changes and want to go back,
you can just reset to your favorite commit with following command. BTW run "git stash save" to keep a copy of your uncommitted changes.
git reset --hard you_favorite_commit_id
Note: that this will delete all your uncommitted changes unless you stashed them and put your local branch behind the remote repo branch you are tracking again.
Wondering where to put these commands? Check https://git-scm.com/downloads.
What's good about using these git tools is that if you switch between IDEs you don't need to search for same functionalities you had in your earlier IDEs.

GitHub client cannot sync after changes made to some files

I have a git repository in which I work in collaboration with some people but I cannot sync anymore. I am using the GitHub Windows client application on Windows 7:
Last time I synced, the operation succeeded and I ended up with a perfect copy of the latest code.
Next, I made some simple changes to a few files, but did not commit anything yet.
In the meantime, someone else made changes to some other files.
In order to see the changes of the repository, I'm trying to sync again.
GitHub client reports "Sync failed".
Now I am wondering if this is normal behavior or if there is something wrong with my repository ? Shouldn't I be able to sync the repository and get latest files even though I am making some changes that are still not committed ?
Thanks.
When you got this kind of error just try to open a git shell and type git status into your working directory. You will have some infos that could help you like which files are in conflict.
It must be one of the other collaborators that updated and pushed a file you just updated. If so, you will have to choose which version you want to keep in your local files.

How can I copy an git repository in Xcode to github?

Every time a try to use github I get tangled in a series of errors that seem to have no solution and I give up. This time I thought I'd try to get help.
I have a local repository created and managed with Xcode. All the local git functions in Xcode work with no problem. Now I want to put this project on github so others can see it. I logged into github and created a repository. It's this one:
lummis/CS193P-2015-Assignment-5
I added a .gitignore file but then deleted it again because I thought it was causing an error. I tried adding a readme file but wasn't able to. I got some error that didn't make sense to me so I gave up on that. So at this point the github repository is empty so far as I can tell.
My local repository has many commits and is currently up-to-date. IOW there is nothing to commit. But when I do "Source Code / Push" I get the following error:
Working copy out of date. Try pulling from the remote to get the
latest changes then push again.
So I try to do that in Xcode by doing "Source Control / Pull". But then I get this error:
"github/master" is not a valid remote branch to pull from. Please
choose a different remote branch.
But there is only one branch. There is no other branch (local or remote) to choose. So I'm stuck in a Xcode-github error loop again. I searched for information about this but didn't find anything relevant. I have the Pro Git book and read and understood it at least thru chapter 2. But that doesn't help on interacting with Xcode.
Can anybody say what I need to do? I thought of deleting the remote repository and starting over but apparently there's no way to do that either!
I know lots of people use github so it must work once you know how to use it but it's a big source of frustration for me.
You have a local repository with "many commits". Let's imagine that we have three:
A---B---C
^
master
Your remote repository on GitHub also contains commits, but they are different ones from what you have locally, e.g.
Y---Z
^
master
At least one of these remote commits was created through the GitHub web interface, which creates a new commit each time you use it.
Because the two repositories contain no common history, Git can't figure out how to handle a push from your local repository to the remote one. It will refuse to accept such a push rather than making any remote commits inaccessible, which is what you usually want.
In this case, commits Y and Z in the remote repository can be discarded. They simply add and then remove a .gitignore file, and you want the remote to reflect what you have locally. The solution is to force push.
Force pushing should generally be avoided, since it can cause commits to be discarded (like Y and Z will be in this case) or to have their hashes changed, which causes major problems with shared repositories. In this instance I don't see any danger in force pushing, which can be accomplished with the -f or --force argument to git push.
(There's nothing fundamentally wrong with force pushing, and in some situations it makes perfect sense, but it should be done with care for the reasons listed above.)

Replacing the working directory with an earlier git commit

Here is the context:
I am using egit within Eclipse
I made a number of commits that I have not pushed to the remote repository
I suddenly notice a bug with my app that wasn't there before
How can I quickly update my working directory with earlier git commits until I find the first commit that introduced the bug? How do I then get back to my latest local commit?
I used hard git resets to do this recently and would have lost my last set of git commits if I hadn't found this answer so there must be another, safer way to achieve the same result.
I am running into a bug in my latest version of the code and want to go back in time until the bug no longer shows up.
That is called git bisect, and is not implemented in Egit.
You should consider using git in command-line, in order to launch a bisect session.
I just figured out the answer to my own question.
It's actually quite simple:
Do git checkout of earlier versions until identifying the last version that does not exhibit the bug and the first one that does
Then do a git switch to the master version to go back to the latest committed version
The checkouts are not intended to make further changes to the code but are quick and useful for updating the working directory without messing with the git directory, which is all what's needed to quickly pin-point the appearance of a new bug in the git tree.