Challenge online Xcode [closed] - ios

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I'm ready for made my second app whit Xcode.
For the first I used cocos2d, a simple game. Now I want create an app where two players can challenge, like RUZZLE for example.
The player register whit my app and play whit other players.
Can I do that? Do I need a server? Do i need to use api code of the app or apple?
Can I use facebook? Can i use my web site?
So, I don't know how start. Is there a plugin in cocos2d which I can use?
I don't find any tutorial about this.
PS: I don't want to use game center.

That's what GameKit and Game Center is for.
Players can login with Game Center, and you can use GameKit for match making, sending challenges to other players and managing leaderboards or achievements.

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A question about iOS app payment architecture [closed]

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everyone. I'm building an iOS app which is a platform for users and influencers.
They can exchange their experience and knowledge. Users can buy gems for book chatting with influencers and influencers will get some gems after finishing users' requests.
The app provides messaging and video call for books.
So, seems to must use in-app purchase to let users buy gems.
The main issue is how the influencers will convert gems to real money.
I've checked stripe connect and I'm a newbie for it.
Already checked Airbnb and twitch model and not sure I'm on the right way.
Is there any better way of it?
What am I missing now? Any help will be welcomed!. Thanks.
I'm pretty sure but not certain if you're selling 'gems' in the app, you'll have to use Apple's In-App Payments which means you won't be able to use Stripe in the way you expect.
You probably should reach out to Support and ask them for guidance, and confirm this is something Stripe can support.

How to push notification to devices that are around -my location - ios? [closed]

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I'm new to the IOS (swift) world. If someone can give me an idea it would be wonderful.
I'm trying to push notifications to all users within a radius. For example, if I'm in a park I want to send a notification to the people using my app in that specific park. If I move the notification is sent to devices on my new location.
I understand that "UNLocationNotificationTrigger" triggers notifications if a user enters in a determinate region, but that's not really what I want.
Thank you for your help
This should be done on the server side. You must track the location of all devices. And when necessary, you calculate the distance of each user to a particular device and send them a notification. You should not load one device with such logic.

MUST iOS live video use HLS? [closed]

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I'd like to make an app that can play live video and start to learn hls, rtmp, rtsp.But documentation of Apple require developer use hls for live video, or will be rejected for distribution.Does any one use rtmp in your app and success to sale in AppStore?
Facebook uses RTMP. So assuming your user base is about a billion people you should be good to go. Otherwise stick to HLS.

iOS - Will Apple like Firebase? [closed]

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I created an iPhone app that is a guide for a local event. The app also shows the schedule of the event. I am using Firebase to retrieve the latest version of the schedule as text and display it in a table view. I am done with the app! I will submit it to the App Store in a few days, but I wanted to know:
(1) if Apple will have any problems or reject my app because I am using Firebase?
(2) If there's any special code I should add to my app in the Firebase code to make it secure?
PS: I set my Firebase rules so that it's read only. This is my first app and I would be really grateful to hear your answers
Best,
A
Using firebase is perfectly fine, just make sure that if your app needs a log in to have a test user for Appstore Review. And put the username and password in the box for test account when you submit. Put some demo data in it to let them know how the app feels to end users.

Is there any way to simulate something similar Nintendo's Streepass functionality in iOS? [closed]

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Closed 8 years ago.
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Essentially is there any way to have an app run at all times in the background and sense other iOS devices around it running the same app?
you can have an app monitor your current location in the background. When you get location updates, you could talk to a web server that would tell you if other people are nearby.
You can't make apps that run as services on iOS though. There are only a handful of things they're allowed to do in the background like monitor location and play music.

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