iOS deployment on specific devices only - objective-c

I was developing a game targeting iPhone 4/iPad and above....
My question is, can I "somehow" set the deployment target so that it won't be able to run on 3GS or older devices?
All my textures are for HD (iPhone 4 resolution), if it runs on 3GS, all the positions will be wrong and all the images are oversized.
Is there any suggestions on how can I solve this problem?

Require a front-facing camera from the SDK. The 3GS will be excluded.
Check here for steps on doing this.

Related

ios app lags and freezing iphone 6s/7/8 in iOS 13

We have an iOS native app developed with Objective C and using auto-layout with Storyboard for UIs.
It is working fine in iOS 12.4.1 in all devices and it is not
working now in the iOS 13 on iPhone 6s/7/8 only.
Only this screen size has the issue.
Other than that all other iphone screens are supporting upto to
iPhone 11 Pro Max.
And this issue is not there in the iPhone 6s/7/8 simulators. Only in
the real device.
When it is installed on iPhone 7 and run the app it lags very much
and freeze the app occasionally, I have to close it, But the iphone is also gets laggy.
I am not getting any errors.
I thought this is layout issue, so I've Removed constraints of all first showing screens and re-added the constraints. And tried to debug with XCode Instruments to test performance but that didnt show me any issue also(I am not much familiar with using XCode Instruments).
I am stuck with this issue for several days.
And I couldnt find anyone having the same issue.
I appreciate any help regarding this.
What could cause this?
I was facing a similar issue and found out that SearchDisplayController which is deprecated, was being used in the code and storyboard as well. That was causing my app to crash on real device, but not on simulator with iOS 13.1.2. After removing the SearchDisplayController, things worked fine for me.

iOS Simulator "Inner" Resolution

I saw the resolution questions:
iOS simulator for iPhone 5- 1136 x 640 resolution
I have done
react-native run-ios --simulator 'iPad Pro (9.7 inch)'
I even went to "Hardware" menu and selected the device again.
My app launches in dimensions of tablet, however the contents within are not rightly sized, it is hugely zoomed. I fixed this accidentally before but I cannot figure it out now. Here is a screenshot of my situation:
It seems like you are running a zoomed in iPhone app (which is possible to do on iPad, so the simulator does what it's supposed to do). You need to set the app from iPhone to Universal in Xcode to tell it that your app is targeted for iPad as well.

Do I need OSX to test IOS applications

I'm looking for a new testautomation tool to test our responsive web application for different devices (Windows Phone, Android, Iphone, Ipad etc). Maybe it is a misunderstanding, but do I need a Mac computer to test a web application through a Ipad or Iphone. For a tool like SilkMobile this is not necessary.
See:
http://appium.io/slate/en/v1.1.0/?ruby#running-appium-on-mac-os-x
I hope you can help me out.
You can use virtual machine to run OS X and iOS emulator.
To test ios applications on IPad or Iphone through appium, Mac ios x 10.7 or higher is required.
you may not need real devices like iphone or ipad, you can use simulators, But Mac PC or Book is required. [Or can be virtually installed in VMware workstation]
See the requirements, Appium requirments

Using iOS 8 device for testing iOS 7 apps

I wonder if I update my primary testing device to iOS8, will this have a negative effect on testing iOS apps compiled with iOS7 SDK on this device? For example bugs related specifically to iOS8, which would not appear on device running iOS7. What problems should I expect?
Ideally, you should have one device to test each operating system version you are targeting. Once you upgrade, you will not be able to catch any issues that relate to iOS7.

Can I dump my non-Retina Images for a iOS7 only app?

The next update of my iPhone app will be targeted for iOS7 only. A couple of questions?
Does this mean I can delete all the non-retina images from my app?
If I have only retina images left do I still need to mark them #2x?
Does Apple keep older iOS versions of my app on the store so those running older versions of iOS who have bought or want to buy can still access it?
Any help would be most appreciated.
Yes you still need to have the #2x at the end. Yes you can drop all the non-retina images but could affect performance as even the newer devices will use some none-retina images but the main performance hit was to iPhone 3GS and below but as iOS 7 will not run on iPhone 3GS or below it isn't a requirement you'll just have to handle the performance issues. No Apple do not keep hold of older versions of your app on the app store, if you drop support for it then it is gone.
To answer the second part of your question YES, Apple does indeed store older versions for download.
For my app Parkable I created one for iOS5/6 then when 7 came about I specifically targeted it and dropped support for older iOS builds, now if you're not on 7+ you can still download the old version (instead of the old error telling the user to update their OS). This happens automatically as I recall, simply change your deployment target in both your project and target under the info tab.
Feel free to test if you have a pre-7 device (iPhone or iPad) and 7+ device https://itunes.apple.com/us/app/parkable/id577954935?mt=8&uo=4