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取消Home键的苹果手机进化过程

如果Iphone取消Home键,带来的焦点问题是:让它更易于使用,还是让用户不习惯。用UI工具模拟取消Home键后的使用体验带来了一些思考。苹果一直保留Home键的目的是两个,一是回到可以选择其他App的地方,二是关闭现在正使用的App。取消它,那么会更好的实现这两个功能吗?或者可以带来更酷的新功能?

对于习惯极简UI的用户来说,取消Home键是美学上的进步,同时通过滑动,点击屏幕的不同部位实现不同功能,也更加易用和直观。但是,回到主屏幕却多了一步点击,更增加了在主屏幕上查找类似应用的复杂程度(多一步操作,其实是多一倍操作)。毋庸置疑,取消它是必然的趋势,而苹果新的应用切换器(App Switcher)更加智能,应该可以克服前面所说的缺点,让我们拭目以待。

原文链接:https://medium.com/

抄录:

Homeless iPhone

By Fabrice Dubois, fab.dubois August 11th, 2017
So, apparently the next iPhone won’t have a physical Home button. There’s been much speculation already about what that means for the user. The bottom area of the device, for some, will be used to host the navigation bar items, as well as a virtual Home button.

This article describes another possibility.

Some recent findings in some leaked code may invalidate what I’m about to write below, but anyway.

Why a Home button?
To address a design problem it’s good to start with the right questions. We seem to use the Home button for two dominant reasons:

To go to a place where we can choose another app
To ‘close’ the current app because we’re done with it
Of course, several other functions rely on the current Home button too (Siri users, shoot me!) but for now please allow me to simplify a bit and assume an alternative can be found for every edge case.

When I tried the first iOS 11 beta on iPad, what struck me most was the new app switcher. Swiping from the bottom edge not only reveals the control centre as it did in previous iOS versions; now it comes with the favorite apps dock and the app switcher too, all on the same screen.

 

The new app switcher on iPad
Photo by: as of iOS 11 Beta 5
From there, it’s interesting to note that tapping anywhere on the blurred background instantly takes you back to the home screen. After a while I realized I wasn’t pressing the Home button that much anymore. The deck plus all my favorites apps, along with the list of recent apps, seemed sufficient for me to continue my workflow — at least most of the time. And my subconscious need for ‘closing’ the current app seemed fulfilled too.

I began to wonder if this new interface, triggered with a simple swipe, could be Apple’s secret weapon to replace the Home button for good.

What would it take to adapt it for the iPhone? That’s what I tried to do.

The concept
That’s it. Let’s decompose the movie into separate clips to discuss the different states.

Dock state

The favorite apps bar, as on iPad and on macOS, is called Dock and can be revealed (alone, without transitioning to the full app switcher) on top of any app. There may even be room to include an extra suggestion in the right part of it. This is your level-1 cache to switch to your next app.

App switcher state

The level-2 cache, that you access if you continue swiping up. I nickname it level-2 cache because it has more apps to offer than the dock, but still less than the home screen. Here the current app has been ‘parked’ temporarily. And this is key. That’s basically what we have in mind when (we think that) we close an app. I assume most people are now aware the app isn’t killed, it’s just parked. The concept is consistent with that of the iPad (I really invented nothing here), except that the iPhone version would use two separate rows due to the elongated display ratio.

Dismissing the app switcher

Here the design relies on a common reflex: if we can’t find what we’re looking for in a view, we tend to look for a way to escape the view. And if we can’t find any concrete affordance to escape, then we tend to tap where we can! I may be over-simplifying, granted. But over-simplification is often more manageable than over-complication.

Once again, this is what the iPad implementation does anyway. In order to ensure a comfortable dismiss zone at the bottom, however, the dock doesn’t persist in the app switcher state (on iPad it does because there’s enough room for it). I’m not too happy with that aspect though, it would deserve refinement.

Opening an app

 

Once the app is open, the dock goes away so the app can make the most of the available real estate, which is apparently massive on the upcoming iPhone; but as you can see it is taken down with a slight delay. This is to improve discoverability of the app switcher. Maybe overkill, maybe not.

Now let’s discuss issues and advantages.

Issues
Discoverability, as well as two steps to go to home screen, may still be a problem in the eyes of many. I personally find it surprisingly smooth to use, having tried and tweaked the proto on a real device, but I appreciate it may not be convincing at first sight.

How to access the other Home reliant functions? Touch ID is strongly expected to be replaced with a better authentication method, such as advanced face recognition. I haven’t thought through all needed workarounds — that’s a full time job — and indeed, that‘s problematic. Accessibility, Siri, screenshot: any idea anyone?

The recents app carousel is not as good as the existing one: it’s smaller. And the Control Centre isn’t as good as the existing one either: it easily needs to be scrolled. That is the cost of simplification.

The proposed approach may disappoint those who expect some kind of rich function bar at the bottom, possibly along the lines of the Macbook’s Touch Bar, or other deep functions that Apple would want to bring right under our thumb. But isn’t the iPhone a Touch Bar already? Apps have always been able to use the bottom of the screen to provide contextual functionalities. As to system functions, there’s a reasonable place for them: Control Centre. So yes, the solution proposed here is about simplification (at least in terms of mental model), not about adding function.

Advantages
First, the elegance of not having a Home button at all. This is more striking, purer, than virtualizing it. Removing the button completely would be the ultimate refinement.

Overlay based solutions such as a virtual button have their own issues: how to make sure the button will contrast well with the app view behind it? How to manage touch conflicts with app? Can we move it around? etc. Getting rid of it completely removes these concerns.

The metaphor used here is more consistent with what really happens in the phone: when you ‘close’ an app, what really happens is that you push it in the background. That’s precisely what the new app switcher UI shows. Literally: You can see and feel that you’re pushing the app on a background.

No impact on the app UI level. Apps remain unaware of any button or whatever rumored function bar and therefore shouldn’t need to adapt their behaviour or layout in any way. When an app is brought to the foreground, the entire floor is its.

Software complexity is kept low. Again, my experiment simply reuses what they’ve already built for iPad. We’re not talking about yet another mechanism made just for the new iPhone. For the user, that guarantees a certain level of familiarity, too.

The design could work surprisingly well in landscape. The layout wouldn’t rotate or reconfigure itself. Only each individual item may have to rotate 90 degrees. Think camera UI, what rotates and what doesn’t, and you’ll see what I mean immediately. The new Control Centre grid looks flexible enough for the required item rotations. And since we would still swipe up from the bottom, the dock would still appear at the bottom, but with such a massive width, I imagine it could offer more app suggestions than in portrait mode.

 

In landscape you would just scroll vertically instead of horizontally, with a nice dismiss area under the right thumb
Summary
The main takeaway is that the new app switcher in iOS 11 for iPad may be even smarter than we think. There is a possibility they didn’t design it specifically for iPad, after all. If perfectly tuned, it makes for a compelling way to switch contexts, and can be seen as an efficient cache between the current app and the home screen.

And, how coincidental, it doesn’t rely on a Home button.

My point with this article is not to speculate; I don’t really care how Apple tackles the removal of the physical Home button, I trust it will be good. And some speculations around have good points too, in their own way. I just saw a very interesting and irresistible design exercise here.

For the prototypes, made with Principle, I used realistic proportions, for both the display (expected 375 * 812 pt resolution) and known components such as the Control Centre items.

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