Generally when you launch the Android Studio for the first time, it will open the Android SDK Manager window, to prompt you to install the required packages for android development. But if that does not happen, you can open the SDK Manager by going to Tools → Android → SDK Manager or click on the icon in the Android Studio toolbar.

If you want early access to the next version of Android Studio, you don't have to replace yourexisting stable version. You can install the Android Studio preview side by side with the stableversion and work on the same app projects in both.

This is possible because Android Studio stores its settings for each install in version-specificfolders. For example, if you have the stable version of Android Studio 2.3and a preview version of Android Studio 3.0 installed on Windows, the settings for eachare saved in directories such as the following:

On Mac, these directories are in ~/Library/Preferences/ and~/Library/Application Support/. On Linux, they're in your home directory.

By default, all Android Studio installations share the same Android SDK tools location asspecified in the SDK Manager, so updates to your otherSDK tools are available in all versions of Android Studio.

• The following packages are not available: - Package id lldb;3.0 - Android Studio 3.0. Ask Question 8. Switch to Canary, update lldb via SDK Manager without updating Android Studio itself, then switch back to your preferred channel (stable or beta). Share improve this answer. Answered Oct 26 '17 at 10:31. 160 8 8 bronze badges.
• Browse - shows packages available from the selected package source. 已安装 - 显示解决方案中安装的包，或项目（如果是管理单个项目的包）。Installed - shows packages installed in the solution, or project if managing packages for a single project.

If you don't already have it, download Android Studio stable here. It's good to havejust in case you encounter a new bug in the preview version.

Install alongside your stable version

After you download an Android Studio preview, simply save the applicationalongside any other version of Android Studio as described below.

Windows:

1. Unpack the ZIP file.
2. Rename the resulting folder to something unique like 'Android Studio Preview.'
3. Move it to a permanent location, such as next to your existing Android Studio installin C:Program FilesAndroid.
4. Inside C:Program FilesAndroidAndroid Studio Previewbin, launch studio64.exe (or ifyou're on a 32-bit machine, launch studio.exe).
5. To make the preview version available in your Start menu, right-click studio64.exe and clickPin to Start Menu.

Mac:

1. Unpack the ZIP file.

   Note:If you download version 2.3 or lower, the application name does notinclude the version number, so you must first rename it before movingthe new version into your apps directory. Otherwise, you might override yourexisting version of Android Studio.

2. Drag the app file into your Applications folder.
3. Now launch it.

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Linux:

1. Unpack the ZIP file.
2. Rename the resulting folder to something unique like 'android-studio-preview.'
3. Move it to wherever you have your stable version, such as within /usr/local/ for youruser profile, or /opt/ for shared users.
4. Open a terminal, navigate into android-studio-preview/bin/ and execute studio.sh.

Change your update channel

By default, each Android Studio installation receives updates corresponding to the channelyou originally downloaded (Canary, Beta, or Stable). If you want to change the update channelfor a given install, follow these steps:

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1. In Android Studio, select File > Settings (or Android Studio > Preference on Mac).
2. In the left pane, select Appearance & Behavior > System Settings > Updates.
3. Be sure that Automatically check for updates is checked, and then select a channelfrom the drop-down list.
4. Click OK.

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When a new version of Android Studio is available for your channel, you'll receive a bubblenotification in the IDE. If you chose to ignore it at first, you can check for updates later byclicking Help > Check for Update (or Android Studio > Check for Updates on Mac).

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For more information about update channels and updating the various SDK tool packages, readUpdate the IDE and SDK Tools.