【今から使える】 チームメンバーの反応がよかった tips集 #wwdctokyo

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June 28, 19

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ヤフーで開催したWWDCのライブビューイングイベントで行われたLTの登壇資料です。
iOS アプリ開発で役立つXodeの使い方やデバッグ方法などのtipsを紹介します。

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2023年10月からSpeaker Deckに移行しました。最新情報はこちらをご覧ください。 https://speakerdeck.com/lycorptech_jp

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【今から使える】 チームメンバーの反応がよかった tips集 WWDC Extended Tokyo 2019 Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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•大西智也 @ヤフー •Yahoo!メール •iOS •ヤフオク! •iOS, ライブオークション, Webフロント技術 •Holiday (副業) •iOS •キーワード • iOS, LeanXP, TDD, ペアプロ, Web, React.js, Python Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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•アウトプット • http://tomoyaonishi.hatenablog.jp • https://github.com/TomoyaOnishi • https://www.slideshare.net/ssuser9c7e21/ presentations • https://www.slideshare.net/techblogyahoo/a6ctocios-xp-yjtc Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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WWDC 2019 個人的予想 • marzipan • Web関連の発表 • PWA, AMP • App Storeの強化 • 完全なリリース制御 Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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IB上でUIViewの boundsを表示する Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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Editor > Canvas > Show Bounds Rectangles Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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IB上でoptionを押す と距離がわかる Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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IB上で階層選択 Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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shift+右クリック or force touch Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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一時的にViewを動かすと きはtransformを使う Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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if animationView.transform == .identity { animationView.transform.ty = 100 } else { animationView.transform = .identity } Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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var originalCenter: CGPoint? var originalFrame: CGRect? 🙅 Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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UIView. performWithoutAnimation() Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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UIView.performWithoutAnimation { tableView.beginUpdates() tableView.endUpdates() } CATransaction kCATransactionDisableActions Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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UserDefaults synchronize不要 Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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😱 Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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/*! -synchronize is deprecated and will be marked with the NS_DEPRECATED macro in a future release. ... open func synchronize() -> Bool Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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/*! -synchronize is deprecated and will be marked with the NS_DEPRECATED macro in a future release. -synchronize blocks the calling thread until all in-progress set operations have completed. This is no longer necessary. Replacements for previous uses of -synchronize depend on what the intent of calling synchronize was. If you synchronized... - ...before reading in order to fetch updated values: remove the synchronize call - ...after writing in order to notify another program to read: the other program can use KVO to observe the default without needing to notify - ...before exiting in a non-app (command line tool, agent, or daemon) process: call CFPreferencesAppSynchronize(kCFPreferencesCurrentApplication) - ...for any other reason: remove the synchronize call */ open func synchronize() -> Bool Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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AutoLayoutな UITableViewCellで縦方向の 謎ワーニングが出るときは一 番下をpriority 999 にする Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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UIView.animate() 🙅 UIViewPropertyAnimator 🙆 Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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@available(iOS 10.0, *) open class UIViewPropertyAnimator let animator = UIViewPropertyAnimator() animator.addAnimations({ _ in }) animator.addCompletion({ _ in }) animator.startAnimation(afterDelay: 2) animator.stopAnimation(false) Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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didSetの補完が出る ようになったが、 didSet {} 内の補完が 出なくなった Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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didSetの補完が出るようになった Xcode10.2〜 Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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didSet {} 内の補完が出なくなった Xcode10.2〜 Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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guard let self = self else { } を書くとpoできない Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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UITextView. textContainerInsets Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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textView.textContainerInset.left = 100 Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.

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Write code. Blow minds. Copyright 2019 Yahoo Japan Corporation. All Rights Reserved.