6/17/2023 0 Comments Xcode download ios 14 simulator![]() Things like that can happen any time we cross a major iOS version boundary. ![]() Nevertheless, every once in a while, Apple does something in a new system version that breaks your existing app that’s compiled for an older version.įor example, here are a few things in my iOS 12 apps that broke when running under iOS 13:ĭeselecting all of a segmented control’s segments by setting its selectedSegmentIndex to UISegmentedControl.noSegment stopped working.Ĭustomizing a navigation bar’s back indicator with setBackIndicatorImage(_:transitionMaskImage:) broke because Apple accidentally swapped the image with the mask.Ī bar button item’s background image stopped being resized vertically to fit the bar button item, causing a lot of my bar button items to look terrible. If they didn’t, a huge proportion of existing apps could break overnight when a new iOS version is released. Apple tries not to impose new features on your older app. That’s because new versions of iOS try to host those older apps so that things behave pretty much as they did when those apps were compiled. On my personal iPhone, there are apps that haven’t been updated in years. It doesn’t get as much attention as backward compatibility, which can be a hard problem and can involve you in all kinds of difficulties but forward compatibility is a real thing too, and it presents problems of its own.Īpple tries pretty hard to provide forward compatibility. ![]() I call this kind of problem forward compatibility. Eventually, users are going to upgrade their devices to iOS 14 when they do that, what will happen to your app? Forward Compatibility is a Thing The one that’s on users’ devices right now. The one that’s in the App Store right now. Some folks are busy recompiling their apps against the iOS 14 SDK and maybe even adopting some of its cool new features.īut others have a different problem they’re asking: “How will iOS 14 affect my existing app that’s already been compiled against iOS 13 in Xcode 11?” You probably have an app like that. If you’ve got existing apps, there are various ways to prepare for that moment. ![]() At the time of this writing, we are in that betwixt-and-between period leading up to the release of iOS 14 Xcode 12, Big Sur, and iOS 14 itself are still in beta, but things could start to go final any day now.
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