What Does Deployment Target Mean

What does deployment target mean?

Lets say you have set minimum deployment target to iOS 9.
This means your application is compatible for iOS 9 and above devices.

The application won't run on below 9.0 devices but can run on any iOS version greater than iOS 9.0.

Xcode target Deployment Target vs. project Deployment Target

Target settings override project settings. Project settings are valid for all targets whose settings haven't been overridden.

How to change deployment target in Xcode 12.3?

Search for IPHONEOS_DEPLOYMENT_TARGET in the search bar: you'll see that the human readable version (non-raw) string is iOS deployment target. So this is not about setting the simulator's target, this is about setting the iOS one. But you think you've already set the correct value for iOS deployment target.

Perhaps you are looking at the wrong target? Or looking at the project instead of the target?: See the picture below, select the target under TARGETS not PROJECT. This is because the target configuration overrides the project one:

What's the meaning of Base SDK, iOS deployment target, Target, and Project in xcode

The base SDK is what you build your app against (i.e. include and library files and frameworks). As you say, it doesn't affect the deployment target, except that base sdk >= deployment target.

You specify build settings on 2 levels as each project can have multiple targets and you might not want the same settings for all targets. The project-level settings override the default settings and the target-level settings override the project-level settings.

For example I have projects with both OSX and iOS targets and some are ARC and some are MRR. I'd have to have different projects for each if I was unable to specify build settings with the level of granularity that Xcode allows.

The iOS deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, in Flutter How can I change the minimum IOS Deploying Target

I solve it with this code, thanks!
At the end of the PodFile

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings.delete 'IPHONEOS_DEPLOYMENT_TARGET'
    end
  end
end

When starting a new react-native project do I have to change my Deployment Target to iOS 14 as per Apple?

The iOS SDK and Deployment Target are two different things in XCode and lowering the deployment target in XCode 12 does not change the fact that you're using iOS 14.

All that changing the deployment target means is you're lowering the minimum supported iOS version for your app.

iOS deployment target

They won't be able to install and run the app (until they upgrade the OS on their device to that of the Deployment Target or above). But they might be able to buy and download the app using iTunes on their Mac or PC.

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