Android Studio 2.0 (2016 年 4 月)

注意：如果您正在开发 N 开发者预览版，则应使用 Android Studio 2.1 预览版。Android Studio 2.0 不支持针对 N 预览版所需的所有功能。

Instant Run:

  • Android Studio 现在比以往任何时候都更快地部署干净的构建。此外，将增量代码更改推送到模拟器或物理设备现在几乎是即时的。在无需重新部署新的调试构建或在许多情况下无需重新启动应用的情况下，查看您的更新。

    • <li>Instant Run supports pushing the following changes to a running app:
  <ul>
    <li>Changes to the implementation of an existing instance method or
    static method
    </li>
    <li>Changes to an existing app resource
    </li>
    <li>Changes to structural code, such as a method signature or a static
    field (requires a target device running API level 21 or higher).
    </li>
  </ul>
</li>

<li>Read the documentation to learn more <a href=
"/tools/building/building-studio.html#instant-run">about Instant
Run</a>.
  <p class="note">
    <strong>Note:</strong> Instant Run is supported only when you deploy the
    debug build variant, use <a href=
    "/tools/revisions/gradle-plugin.html#revisions">Android plugin for
    Gradle version 2.0.0</a> or higher, and configure your app's module-level
    <code>build.gradle</code> file for <code>minSdkVersion 15</code> or higher.
    For the best performance, configure your app for <code>minSdkVersion
    21</code> or higher.
  </p>
</li>

Lint 的新增功能

  • 检查使用 @IntDef 注释的整数的 switch 语句，以确保处理所有常量。要快速添加任何缺少的语句，请使用意图操作下拉菜单并选择添加缺少的 @IntDef 常量。
  • 标记在 build.gradle 文件中使用字符串插值插入版本号的错误尝试。
  • 标记扩展 Fragment 类的匿名类。
  • 标记不安全位置（例如 res/ 和 asset/ 文件夹）中的原生代码。此标记鼓励将原生代码存储在 libs/ 文件夹中，然后在安装时安全地打包到应用程序的 data/app-lib/ 文件夹中。 AOSP：#169950
  • 标记对 Runtime.load() 和 System.load() 调用的不安全调用。 AOSP：#179980
  • 通过从菜单栏中选择重构 > 删除未使用资源来查找并删除任何未使用的资源。未使用资源检测现在支持仅由未使用资源引用的资源、原始文件中（例如 .html 图像引用）中的引用以及 Gradle 资源压缩程序使用的 tools:keep 和 tools:discard 属性，同时考虑非活动源集（例如在其他构建风格中使用的资源）并正确处理静态字段导入。
  • 检查隐式 API 引用是否在 minSdkVersion 针对的所有平台上都受支持。
  • 标记 RecyclerView 和 Parcelable 的不正确用法。
  • @IntDef、@IntRange 和 @Size 检查现在也针对 int 数组和可变参数进行检查。

其他改进

:

  • 针对 Android 模拟器 2.0 进行了优化，速度比以往任何时候都快，支持更广泛的虚拟设备，并具有大幅改进的用户界面。要了解有关新模拟器的更多信息，请阅读SDK 工具发行说明。

    • <li>Improvements to the <a href=
"/tools/devices/managing-avds.html">Android Virtual Device
Manager</a>:
  <ul>
    <li>System images are now categorized under the following tabs:
    <em>Recommended</em>, <em>x86</em>, and <em>Other</em>.
    </li>
    <li>Under advanced settings, you can enable multi-core support and
    specify the number of cores the emulator can use.
    </li>
    <li>Under advanced settings, you can determine how graphics are rendered
    on the emulator by selecting one of the following options:
      <ul>
        <li>
          <strong>Hardware:</strong> use you computer's graphics card for
          faster rendering.
        </li>
        <li>
          <strong>Software:</strong> use software-based rendering.
        </li>
        <li>
          <strong>Auto:</strong> let the emulator decide the best option. This
          is the default setting.
        </li>
      </ul>
    </li>
  </ul>
</li>

<li>Improved AAPT packaging times by specifying deploy target before the app
is built. This allows Android Studio to efficiently package only the
resources required by the specified device.
</li>

<li>Added Cloud Test Lab integration to provide on-demand app testing with
the convenience and scalability of a cloud service. Learn more about how you
can <a href="/training/testing/start/index.html#run-ctl">use Cloud
Test Lab with Android Studio</a>.
</li>

<li>Added a preview of the new <a class="external-link" href=
"//tools.android.com/tech-docs/gpu-profiler">GPU Debugger</a>. For graphics
intensive applications, you can now visually step through your OpenGL ES code
to optimize your app or game.
</li>

<li>Added Google App Indexing Test. Add support for URLs, app
indexing, and search functionality to your apps to help drive more
traffic to your app, discover which app content is used most, and attract
new users. Test and validate URLs in your app all within Android
Studio. See <a href=
"/tools/help/app-link-indexing.html">Supporting URLs and App
  Indexing in Android Studio</a>.
</li>

<li>Upgrades from the latest IntelliJ 15 release, including improved code
analysis and performance. See <a class="external-link" href=
"https://www.jetbrains.com/idea/whatsnew">What's New in IntelliJ</a> for a
complete description of the new features and enhancements.
</li>

<li>XML editor auto-complete now adds quotations marks when completing
attributes. To check if this option is enabled, open the <b>Setting</b> or
<b>Preferences</b> dialogue, navigate to <b>Editor &gt; General &gt; Smart
Keys</b>, and check the box next to <b>Add quotes for attribute value on
attribute completion</b>. <a class="external-link" href=
"//b.android.com/195113">Issue: 195113</a>
</li>

<li>The XML editor now supports code completion for <a href=
"/topic/libraries/data-binding/index.html#layout_details">data binding</a>
expressions.
</li>