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HankChow translating
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An Overview of Android Pie
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======
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Let’s talk about Android for a moment. Yes, I know it’s only Linux by way of a modified kernel, but what isn’t these days? And seeing as how the developers of Android have released what many (including yours truly) believe to be the most significant evolution of the platform to date, there’s plenty to talk about. Of course, before we get into that, it does need to be mentioned (and most of you will already know this) that the whole of Android isn’t open source. Although much of it is, when you get into the bits that connect to Google services, things start to close up. One major service is the Google Play Store, a functionality that is very much proprietary. But this isn’t about how much of Android is open or closed, this is about Pie.
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Delicious, nutritious … efficient and battery-saving Pie.
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I’ve been working with Android Pie on my Essential PH-1 daily driver (a phone that I really love, but understand how shaky the ground is under the company). After using Android Pie for a while now, I can safely say you want it. It’s that good. But what about the ninth release of Android makes it so special? Let’s dig in and find out. Our focus will be on the aspects that affect users, not developers, so I won’t dive deep into the underlying works.
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### Gesture-Based Navigation
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Much has been made about Android’s new gesture-based navigation—much of it not good. To be honest, this was a feature that aroused all of my curiosity. When it was first announced, no one really had much of an idea what it would be like. Would users be working with multi touch gestures to navigate around the Android interface? Or would this be something completely different.
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![Android Pie][2]
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Figure 1: The Android Pie recent apps overview.
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[Used with permission][3]
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The reality is, gesture-based navigation is much more subtle and simple than what most assumed. And it all boils down to the Home button. With gesture-based navigation enabled, the Home button and the Recents button have been combined into a single feature. This means, in order to gain access to your recent apps, you can’t simply tap that square Recents button. Instead, the Recent apps overview (Figure 1) is opened with a short swipe up from the home button.
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Another change is how the App Drawer is accessed. In similar fashion to opening the Recents overview, the App Drawer is opened via a long swipe up from the Home button.
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As for the back button? It’s not been removed. Instead, what you’ll find is it appears (in the left side of the home screen dock) when an app calls for it. Sometimes that back button will appear, even if an app includes its own back button.
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Thing is, however, if you don’t like gesture-based navigation, you can disable it. To do so, follow these steps:
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1. Open Settings
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2. Scroll down and tap System > Gestures
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3. Tap Swipe up on Home button
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4. Tap the On/Off slider (Figure 2) until it’s in the Off position
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### Battery Life
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AI has become a crucial factor in Android. In fact, it is AI that has helped to greatly improve battery life in Android. This new feature is called Adaptive Battery and works by prioritizing battery power for the apps and services you use most. By using AI, Android learns how you use your Apps and, after a short period, can then shut down unused apps, so they aren’t draining your battery while waiting in memory.
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The only caveat to Adaptive Battery is, should the AI pick up “bad habits” and your battery start to prematurely drain, the only way to reset the function is by way of a factory reset. Even with that small oversight, the improvement in battery life from Android Oreo to Pie is significant.
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### Changes to Split Screen
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Split Screen has been available to Android for some time. However, with Android Pie, how it’s used has slightly changed. This change only affects those who have gesture-based navigation enabled (otherwise, it remains the same). In order to work with Split Screen on Android 9.0, follow these steps:
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![Adding an app][5]
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Figure 3: Adding an app to split screen mode in Android Pie.
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[Used with permission][3]
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1. Swipe upward from the Home button to open the Recent apps overview.
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2. Locate the app you want to place in the top portion of the screen.
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3. Long press the app’s circle icon (located at the top of the app card) to reveal a new popup menu (Figure 3)
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4. Tap Split Screen and the app will open in the top half of the screen.
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5. Locate the second app you want to open and, tap it to add it to the bottom half of the screen.
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Using Split Screen and closing apps with the feature remains the same as it was.
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###
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![Actions][7]
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Figure 4: Android App Actions in action.
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[Used with permission][3]
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### App Actions
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This is another feature that was introduced some time ago, but was given some serious attention for the release of Android Pie. App Actions make it such that you can do certain things with an app, directly from the apps launcher.
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For instance, if you long-press the GMail launcher, you can select to reply to a recent email, or compose a new email. Back in Android Oreo, that feature came in the form of a popup list of actions. With Android Pie, the feature now better fits with the Material Design scheme of things (Figure 4).
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![Sound control][9]
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Figure 5: Sound control in Android Pie.
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[Used with permission][3]
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### Sound Controls
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Ah, the ever-changing world of sound controls on Android. Android Oreo had an outstanding method of controlling your sound, by way of minor tweaks to the Do Not Disturb feature. With Android Pie, that feature finds itself in a continued state of evolution.
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What Android Pie nailed is the quick access buttons to controlling sound on a device. Now, if you press either the volume up or down button, you’ll see a new popup menu that allows you to control if your device is silenced and/or vibrations are muted. By tapping the top icon in that popup menu (Figure 5), you can cycle through silence, mute, or full sound.
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### Screenshots
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Because I write about Android, I tend to take a lot of screenshots. With Android Pie came one of my favorite improvements: sharing screenshots. Instead of having to open Google Photos, locate the screenshot to be shared, open the image, and share the image, Pie gives you a pop-up menu (after you take a screenshot) that allows you to share, edit, or delete the image in question.
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![Sharing ][11]
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Figure 6: Sharing screenshots just got a whole lot easier.
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[Used with permission][3]
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If you want to share the screenshot, take it, wait for the menu to pop up, tap Share (Figure 6), and then share it from the standard Android sharing menu.
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### A More Satisfying Android Experience
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The ninth iteration of Android has brought about a far more satisfying user experience. What I’ve illustrated only scratches the surface of what Android Pie brings to the table. For more information, check out Google’s official [Android Pie website][12]. And if your device has yet to receive the upgrade, have a bit of patience. Pie is well worth the wait.
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--------------------------------------------------------------------------------
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via: https://www.linux.com/learn/2018/10/overview-android-pie
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作者：[Jack Wallen][a]
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选题：[lujun9972][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://www.linux.com/users/jlwallen
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[b]: https://github.com/lujun9972
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[1]: /files/images/pie1png
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[2]: https://www.linux.com/sites/lcom/files/styles/floated_images/public/pie_1.png?itok=BsSe8kqS (Android Pie)
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[3]: /licenses/category/used-permission
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[4]: /files/images/pie3png
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[5]: https://www.linux.com/sites/lcom/files/styles/floated_images/public/pie_3.png?itok=F-NB1dqI (Adding an app)
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[6]: /files/images/pie4png
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[7]: https://www.linux.com/sites/lcom/files/styles/floated_images/public/pie_4.png?itok=Ex-NzYSo (Actions)
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[8]: /files/images/pie5png
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[9]: https://www.linux.com/sites/lcom/files/styles/floated_images/public/pie_5.png?itok=NMW2vIlL (Sound control)
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[10]: /files/images/pie6png
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[11]: https://www.linux.com/sites/lcom/files/styles/floated_images/public/pie_6.png?itok=7Ik8_4jC (Sharing )
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[12]: https://www.android.com/versions/pie-9-0/
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Android 9.0 概览
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======
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我们来谈论一下 Android。尽管 Android 只是一款内核经过修改的 Linux，但经过多年的发展，Android 开发者们（或许包括正在阅读这篇文章的你）已经为这个平台的演变做出了很多值得称道的贡献。当然，可能很多人都已经知道，但我们还是要说，Android 并不完全开源，当你使用 Google 服务的时候，就已经接触到闭源的部分了。Google Play 商店就是其中之一，它不是一个开放的服务，不过这与 Android 是否开源没有太直接的联系，而是为了让你享用到美味、营养、高效、省电的馅饼（注：Android 9.0 代号为 Pie）。
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我在我的 Essential PH-1 手机上运行了 Android 9.0（我真的很喜欢这款手机，也很了解这家公司的境况并不好）。在我自己体验了一段时间之后，我认为它是会被大众接受的。那么 Android 9.0 到底好在哪里呢？下面我们就来深入探讨一下。我们的出发点是用户的角度，而不是开发人员的角度，因此我也不会深入探讨太底层的方面。
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### 手势操作
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Android 系统在新的手势操作方面投入了很多，但实际体验却不算太好。这个功能确实引起了我的兴趣。在这个功能发布之初，大家都对它了解甚少，纷纷猜测它会不会让用户使用多点触控的手势来浏览 Android 界面？又或者会不会是一个完全颠覆人们认知的东西？
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实际上，手势操作比大多数人设想的要更加微妙和简单，因为很多功能都浓缩到了 Home 键上。打开手势操作功能之后，Recent 键的功能就合并到 Home 键上了。因此，如果需要查看最近打开的应用程序，就不能简单地通过 Recent 键来查看，而应该从 Home 键向上轻扫一下。（图1）
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![Android Pie][2]
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图 1：Android 9.0 中的”最近的应用程序“界面。
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另一个不同的地方是 App Drawer。类似于查看最近打开的应用，需要在 Home 键向上滑动才能打开 App Drawer。
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而后退按钮则没有去掉。在应用程序需要用到后退功能时，它就会出现在屏幕的左下方。有时候即使应用程序自己带有后退按钮，Android 的后退按钮也会出现。
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当然，如果你不喜欢使用手势操作，也可以禁用这个功能。只需要按照下列步骤操作：
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1. 打开”设置“
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2. 向下滑动并进入 系统 > 手势
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3. 从 Home 键向上滑动
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4. 将 On/Off 滑块（图2）滑动至 Off 位置
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图 2：关闭手势操作。
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### 电池寿命
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人工智能已经在 Android 得到了充分的使用。现在，Android 使用人工智能大大提供了电池的续航时间，这样的新技术称为自适应电池。自适应电池可以根据用户的个人使用习惯来决定各种应用和服务的耗电优先级。通过使用人工智能技术，Android 可以分析用户对每一个应用或服务的使用情况，并适当地关闭未使用的应用程序，以免长期驻留在内存中白白消耗电池电量。
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对于这个功能的唯一一个警告是，如果人工智能出现问题并导致电池电量过早耗尽，就只能通过恢复出厂设置来解决这个问题了。尽管有这样的缺陷，在电池续航时间方面，Android 9.0 也比 Android 8.0 有所改善。
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### 分屏功能
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分屏对于 Android 来说不是一个新功能，但在 Android 9.0 上，它的使用方式和以往相比略有不同，而且只对于手势操作有影响，不使用手势操作的用户不受影响。要在 Android 9.0 上使用分屏功能，需要按照下列步骤操作：
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![Adding an app][5]
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图 3：在 Android 9.0 上将应用添加到分屏模式中。
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[Used with permission][3]
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1. 从 Home 键向上滑动，打开“最近的应用程序”。
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2. 找到需要放置在屏幕顶部的应用程序。
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3. 长按应用程序顶部的图标以显示新的弹出菜单。（图 3）
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4. 点击分屏，应用程序会在屏幕的上半部分打开。
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5. 找到要打开的第二个应用程序，然后点击它添加到屏幕的下半部分。
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使用分屏功能关闭应用程序的方法和原来保持一致。
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### 应用操作
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这个功能在早前已经引入了，但直到 Android 9.0 发布，人们才开始对它产生明显的关注。应用操作功能可以让用户直接从应用启动器来执行应用里的某些操作。
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例如，长按 GMail 启动器，就可以执行回复最近的邮件、撰写新邮件等功能。在 Android 8.0 中，这个功能则以弹出动作列表的方式展现。在 Android 9.0 中，这个功能更契合 Google 的<ruby>材料设计<rt>Material Design</rt></ruby>风格（图 4）。
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![Actions][7]
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图 4：Android 应用操作。
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### 声音控制
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在 Android 中，声音控制的方式经常发生变化。在 Android 8.0 对“请勿打扰”功能进行调整之后，声音控制已经做得相当不错了。而在 Android 9.0 当中，声音控制再次进行了优化。
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Android 9.0 这次优化针对的是设备上快速控制声音的按钮。如果用户按下音量增大或减小按钮，就会看到一个新的弹出菜单，可以让用户控制设备的静音和震动情况。点击这个弹出菜单顶部的图标（图 5），可以在完全静音、静音和正常声音几种状态之间切换。
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![Sound control][9]
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图 5：Android 9.0 上的声音控制。
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### 屏幕截图
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由于我要撰写关于 Android 的文章，所以我会常常需要进行屏幕截图。而 Android 9.0 有意向我最喜欢的更新，就是分享屏幕截图。Android 9.0 可以在截取屏幕截图后，直接共享、编辑，或者删除不喜欢的截图，而不需要像以前一样打开 Google 相册、找到要共享的屏幕截图、打开图像然后共享图像。
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![Sharing ][11]
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图 6：共享屏幕截图变得更加容易。
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如果你想分享屏幕截图，只需要在截图后等待弹出菜单，点击分享（图 6），从标准的 Android 分享菜单中分享即可。
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### 更令人满意的 Android 体验
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Android 9.0 带来了更令人满意的用户体验。当然，以上说到的内容只是它的冰山一角。如果需要更多信息，可以查阅 Google 的官方 [Android 9.0 网站][12]。如果你的设备还没有收到升级推送，请耐心等待，Android 9.0 值得等待。
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--------------------------------------------------------------------------------
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via: https://www.linux.com/learn/2018/10/overview-android-pie
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作者：[Jack Wallen][a]
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选题：[lujun9972][b]
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译者：[HankChow](https://github.com/HankChow)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://www.linux.com/users/jlwallen
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[b]: https://github.com/lujun9972
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[1]: /files/images/pie1png
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[2]: https://www.linux.com/sites/lcom/files/styles/floated_images/public/pie_1.png?itok=BsSe8kqS "Android Pie"
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[3]: /licenses/category/used-permission
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[4]: /files/images/pie3png
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[5]: https://www.linux.com/sites/lcom/files/styles/floated_images/public/pie_3.png?itok=F-NB1dqI "Adding an app"
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[6]: /files/images/pie4png
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[7]: https://www.linux.com/sites/lcom/files/styles/floated_images/public/pie_4.png?itok=Ex-NzYSo "Actions"
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[8]: /files/images/pie5png
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[9]: https://www.linux.com/sites/lcom/files/styles/floated_images/public/pie_5.png?itok=NMW2vIlL "Sound control"
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[10]: /files/images/pie6png
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[11]: https://www.linux.com/sites/lcom/files/styles/floated_images/public/pie_6.png?itok=7Ik8_4jC "Sharing "
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[12]: https://www.android.com/versions/pie-9-0/
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