Apple broke an essential presentation feature of iPads
Apple broke an essential presentation feature of iPads
A brief digression from my usual teaching posts to complain about a devastating regression in iPadOS 27.
暂时偏离我平时的教学文章，来吐槽一下 iPadOS 27 中一个破坏性的倒退。
If you’ve followed my work up until now, you’ll know that I rely heavily on writing on handouts from my iPad, projected via AirPlay to an external screen that my students can see. When I’m doing this, my iPad is also doing many other things: controlling a PowerPoint presentation on my Mac, showing me notes that I’ve taken on points I want to mention and students I want to call on, and showing me the results of polls before I reveal them to the class. This ability to do other things on your iPad while the audience just sees your presentation or handout is an essential part of a variety of pedagogical moves that I use in my teaching.
如果你一直关注我的工作，就会知道我非常依赖在 iPad 上对讲义进行书写，并通过 AirPlay 投屏到学生可见的外部屏幕上。在进行此操作时，我的 iPad 还要处理许多其他任务：控制 Mac 上的 PowerPoint 演示文稿、查看我记录的要点和想点名提问的学生名单，以及在向全班公布前查看投票结果。这种在观众只能看到演示文稿或讲义的同时，在 iPad 上进行其他操作的能力，是我教学中多种教学手段的重要组成部分。
Unfortunately, Apple just completely broke it.
不幸的是，苹果刚刚彻底破坏了这一功能。
As of iPadOS 27, if you have multiple windows open while AirPlaying (whether or not Stage Manager is on), tapping on anything other than the presenting app will snap the external display into showing your whole iPad screen. This means that my students see all my notes on who I want to call on, or poll results that should be hidden from them. They also get distracted from what we’re learning by all these jarring windows popping up and disappearing. If you’re presenting at a big conference, it’s extremely embarrassing.
在 iPadOS 27 中，如果你在进行 AirPlay 投屏时打开了多个窗口（无论是否开启台前调度），点击演示应用之外的任何内容，外部显示器都会瞬间切换为显示你的整个 iPad 屏幕。这意味着我的学生会看到我所有关于想点名谁的笔记，或者本应向他们隐藏的投票结果。这些突兀弹出的窗口也会让他们从学习内容中分心。如果你是在大型会议上进行演示，这会非常尴尬。
In GoodNotes, the presenter view will return once you tap back on the app. In Keynote, it will just exit the presentation entirely. In PowerPoint, it will put the app in a limbo where you have to restart the presentation to proceed. Here’s a Reddit post illustrating the behavior in GoodNotes. But don’t just take my word for it; try it at home!
在 GoodNotes 中，当你点回该应用时，演示者视图会恢复。在 Keynote 中，它会直接退出演示。在 PowerPoint 中，它会让应用陷入一种尴尬的状态，你必须重启演示才能继续。这里有一篇 Reddit 帖子展示了 GoodNotes 中的这种行为。但别只听我的一面之词，你自己在家试试就知道了！
I sort of understand why Apple did this. In iPadOS 26, which app could “control” the external display was hard to identify. Essentially, you had to swipe up as though going to the home screen, then tap on the app you wanted in the dock, and that app would take over the external display if it had a presentation mode. This was weird and hard to understand, but Apple’s solution is to just make it so that whatever is the most recently tapped app takes over, which is much, much worse.
我多少能理解苹果为什么要这样做。在 iPadOS 26 中，很难确定哪个应用可以“控制”外部显示器。本质上，你必须像回到主屏幕那样向上滑动，然后在程序坞中点击你想要的应用，如果该应用有演示模式，它才会接管外部显示器。这很奇怪且难以理解，但苹果的解决方案是让最近点击的应用直接接管，这反而变得更糟了。
As for what the behavior should be, I’m not a developer, but here’s a proposal: if you’re using an app that is in presenter mode (e.g., PowerPoint playing a presentation, or a GoodNotes document open), it should always get precedence on the external display, until that presentation gets stopped, the document is closed, or the app is quit. Period.
至于应该是什么样的行为，我不是开发者，但我有一个建议：如果你正在使用处于演示模式的应用（例如正在播放演示的 PowerPoint，或打开的 GoodNotes 文档），它应该始终在外部显示器上拥有优先权，直到演示停止、文档关闭或应用退出为止。就是这样。
I talked/griped/whined/begged about this on an episode of Mac Power Users in early September (here’s a link to the video), and as of now this behavior hasn’t changed, including in the latest betas. I’m hoping that this post can get the word out, or that maybe someone has figured out a workaround. I’ve also filed a feedback report with Apple and encourage you to do the same (click here and mention my feedback code FB23615646).
我在九月初的一期《Mac Power Users》节目中谈论/抱怨/哀求过这件事（这是视频链接），截至目前，这种行为还没有改变，包括在最新的测试版中也是如此。我希望这篇文章能让更多人知道，或者也许有人已经找到了变通方法。我也向苹果提交了反馈报告，并鼓励大家也这样做（点击这里并提及我的反馈代码 FB23615646）。
I’ll update this post if anything changes, but for now, I can’t recommend this operating system to anyone using their iPad to teach or present.
如果有任何变化，我会更新这篇文章，但目前，我无法向任何使用 iPad 进行教学或演示的人推荐这个操作系统。