Escape From Alcatraz: The Brave New World of Xcode Extensions - iOSDevUK Aberystwyth, September 2016

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XCODE IS MY FRENEMY

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XCODE AUTO-BASHER

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XCODE GHOST !

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EXTENSIONS!

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EXTENSION GOOD NEWS

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OFFICIALLY SUPPORTED

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DOCUMENTED API

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DOCUMENTED API *SORT OF

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MAKING AN EXTENSION

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1. MAKE A HOST MAC APP

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2. ADD AN EXTENSION

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XCSourceEditorExtension

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XCSourceEditorCommand

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sudo /usr/libexec/xpccachectl THEN TURN IT OFF AND ON AGAIN (ONLY ON 10.11 EL CAPITAN, NOT NEEDED ON 10.12 SIERRA)

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TEMPTING THE DEMO GODS https://github.com/designatednerd/Xcode8ExtensionExample

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DISTRIBUTION: LIKE ANY OTHER MAC APP

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EXTENSION LIMITATIONS (ON A SCALE OF ! TO ")

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!: EXTENSIONS ARE SANDBOXED AND CODE-SIGNED

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!: NO DEFAULT KEY BINDINGS (USERS HAVE TO SET THEM UP INDIVIDUALLY)

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☹: MUST BE INVOKED BY THE USER

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!: NO ACCESS TO FILE OR PROJECT STRUCTURE

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!: CAN'T EMIT WARNINGS

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DUMB THINGS I DID WHICH YOU SHOULD NOT DO

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FORGOT TO UNINSTALL OLD PLUGIN TOOLS

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FORGOT TO ENABLE CODE SIGNING

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THOUGHT CHANGING THE BundleDisplayName WOULD CHANGE THE DISPLAYED NAME

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LAUNCHED THE WRONG VERSION OF XCODE

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OBLIGATORY SUMMARY SLIDE! ▸ Alcatraz is dead in Xcode 8. RIP. ▸ Xcode extensions are officially supported, and that's good. ▸ Xcode extensions must have a host macOS app, but that app doesn't actually have to do anything. ▸ Xcode extensions are pretty limited. File radars.

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QUESTION TIME!

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A FEW QUICK OVERVIEWS! http://www.russbishop.net/xcode-extensions https://littlebitesofcocoa.com/239-creating-an-xcode-source-editor- extension http://allblue.me/xcode/2016/06/28/Build-your-own-Xcode-8-source- editor-extension/ https://videos.raywenderlich.com/screencasts/ios-10-creating-an- xcode-8-extension [paid]

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LINKS! ▸ WWDC 2016 Session 414: Using and extending the Xcode Source Editor: https://developer.apple.com/videos/play/wwdc2016/414/ ▸ Roundup of extensions as of mid-August 2016: https:// theswiftdev.com/2016/08/17/xcode-8-extensions/ ▸ Xcode Ghost details: https://en.wikipedia.org/wiki/XcodeGhost

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RADARS TO DUPE! If you'd like any of this functionality, please dupe these radars: ▸ Allow callbacks anytime a file with a given extension is edited: http://www.openradar.me/26823522 ▸ No Default key bindings: http://www.openradar.me/28170032 ▸ Can't emit warnings: http://www.openradar.me/28170362