Generating QR code in iOS app - objective-c

In my app I am looking to generate a QR code. Now I have already looked at a couple of classes online but none of them seem to work, including this one https://github.com/myang-git/QR-Code-Encoder-for-Objective-C which seems to have problems (I am getting an error every time I try to run it).
What is an easy straight forward way to make QR codes? I am really desperate here and have been looking online for hours now.

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Several of my end users keep getting error 910 on play store

Several of my end users cannot install my app due to them getting the 910 error message. I have already tried asking them to delete their cache and other similar solutions I have found on several websites, none of them have been able to download my app after trying this. I was wondering if there is a chance this is a programming error on my part and if so what can I do?
I believe there is very little chance this is a programming error on your part. Unfortunately this is a pretty rare error code. There are a few things you can do if you have good communication with the users:
Find out what version of the Play Store they are on, and if it is not the latest encourage them to update
if they seem reasonably good at doing slightly technical things you could get them to take a bug report and then you contact Google Play developer support using the contact button on the help menu with that bug report.

Reversing the subtract algorithm (Jailbreak App Flex 3)

I recently started using flex 3 to patch games and get more aware of coding and what certain things do.
I made a patch for this app called Highrise and was successful in getting it to operate by giving the user +3,000 bubbles when their profile is liked instead of the programmed +2 bubbles.
The only problem now is that it gives the user the amount but it disappears once you leave the room or close the app and it doesn't process when going to purchase something in the games store.
I received one suggestion so far which was to try "Reversing the subtract algorithm" but I don't understand what that means. I'm fairly new to coding and have a lot more knowledge to gain.
Can anyone help? I posted pictures from my patch below.
Thanks!
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That's because the app you're trying to Hack is server-sided. Flex 3 isn't that useful anymore when it comes to hacking iOS applications unless you're trying to modify a basic offline non server-sided game.
To be a bit more clear, when you're trying to modify how much "Bubbles" you receive in Highrise with Flex 3, it doesn't work because those "Bubbles" are stored on a server. When they're being used, the game will fetch them from the server.
The only problem now is that it gives the user the amount but it disappears
That's because Flex 3 only changes the Visual number of the "Bubbles" and not the actual server-sided stored amount.
I received one suggestion so far which was to try "Reversing the subtract algorithm" but I don't understand what that means.
This is a bit of a more Advanced way to hack an application. You basically load the application's binary in a disassembler program like IDA Pro find the algorithm that subtracts the "Bubbles". This is a very long subject to understand to I suggest you go on this website https://www.iosgods.com and learn how to hack games using a disassembler + debugger. They have nice tutorials on how to get started.

Apple Watch on react-native

I want to get react-native working for the Apple Watch, but I'm not sure where to start
I started reading the code for the iOS implementation to figure out how they did it there.
My question is: are there any resources or guidelines for help to actually implement react-native (do they ever talk about this aspect of it) or do I need to just read through the code and figure it out on my own?
It would be nice if the react-native team made a document on how they got it up and running on iOS (or Android), though they may already have that out there which is what I'm looking for.
Thanks in advance for any advice and/or help
I was looking into this, too. I will share my findings.
According to this comment from the React Native team back in 2015, the team doesn't have resources to support it, yet.
Right now, we're focused on normal iOS and Android. We still a very small team and don't have the resources to target a different support right now. However, we open sourced React Native in the hope that we get help from the community to build those :)
Someone tried to build one with a lot of reverse engineering, but there are still unsolved issues causing crashes.

Is anyone using or working on the Skeleton Framework?

I'm wondering if anyone is working on or using the Skeleton Framework (http://www.getskeleton.com) any more? The GitHub site does show a little activity from time to time but I'm wondering if there is a way for me to chat with people that know what's going on with it.
I've been using the framework at work one all of my recent projects and I want to get a little more involved with it's development.
Thanks
I'm currently using it to build my portfolio site. Haven't seen any recent changes to it but it does seem to be getting used quite a bit from what I've researched. I enjoy how it's bare bones, simple to use and ready to go with your own custom code. You have something you need help with?

FrontRow tutorial for Xcode

I was wondering if there was a basic tutorial to get me started on coding a FrontRow plug-in / add-on using Xcode.
I searched Google a couple of times, but I haven't found a tutorial on this subject so far.
After some more searching, I found this Wiki-page about creating an app for the Apple TV.
As far as I can tell now, it's a good base to start a FrontRow app too.
If someone else may find a better tutorial, please let me know.
http://wiki.awkwardtv.org/wiki/FRAppliance_101
Edit:
Doesn't really seem to work on my system.