[null,null,["最后更新时间 (UTC)：2025-08-21。"],[],[],null,["# Get 12L\n\nYou can get the 12L feature drop in any of the following ways:\n\n- [Download the 12L emulator image through Android Studio](#set-up-avd)\n- [Get 12L on a partner device](#on_partner)\n- [Get 12L on a Google Pixel device](#on_pixel)\n- [Get a generic system image (GSI)](#on_gsi)\n\nComplete instructions are below. Setup is fast and you can try your apps on a\nvariety of screen sizes.\n\nFor ideas on what to test, see [Get your apps\nready](/about/versions/12/12L/summary#get-apps-ready).\n\nSet up a 12L virtual device\n---------------------------\n\nTo set up a 12L virtual device, follow these steps:\n\n1. Install [Android Studio Chipmunk \\| 2021.2.1 or higher](/studio).\n\n2. In Android Studio, click **Tools \\\u003e SDK Manager**.\n\n3. In the **SDK Tools** tab, select the latest version of **Android Emulator** ,\n and click **OK**. This action installs the latest version if it isn't\n already installed.\n\n4. In Android Studio, click **Tools \\\u003e Device Manager** , then click **Create\n device** in the **Device Manager** panel.\n\n5. Select a device definition with a large screen, such as the **Pixel C** in\n the **Tablet** category or the **7.6\" Fold-in with outer display** in the\n **Phone** category, then click **Next**.\n\n6. Find the 12L system image, called **Android API 32** , and click **Download**\n to get it. After the download completes, select this system image and click\n **Next**.\n\n7. Finalize other settings for your virtual device, then click **Finish**.\n\n8. After returning to the list of virtual devices in the Device Manager, find\n your 12L virtual device and click **Launch**\n to\n start it.\n\nRepeat these steps to create a variety of large screen device definitions that\nyou can use to test your app in a variety of large screen scenarios.\n\n### Resizable emulator\n\nIn addition to large screen virtual devices that you can configure for 12L, you\ncan try the resizable device configuration that's included in Android Studio\nChipmunk \\| 2021.2.1 or higher. When you're using a resizable device definition\nwith a 12L system image, the Android Emulator lets you quickly toggle between\nthe four reference devices: phone, foldable, tablet, and desktop. When using the\nfoldable reference device, you can also toggle between folded and unfolded\nstates.\n\nThis flexibility makes it easier to both validate your layout at design time and\ntest the behavior at runtime, using the same reference devices. To create a new\nresizable emulator, use the Device Manager in Android Studio to create a new\nvirtual device and select the **Resizable** device definition.\nUse the new resizable device definition for the Android Emulator to test 12L with variety of large screen scenarios.\n\nGet 12L on a partner device\n---------------------------\n\nWe've partnered with Lenovo to make 12L available for you to try on the Lenovo\nP12 Pro.\n\nYou can learn how to install 12L on the Lenovo P12 Pro by visiting [Lenovo's\n12L preview site](https://dev.lenovo.com/home/puahAndroid12).\n\nLenovo provides 12L updates on its own timeline and provides its own channel for\nreporting issues found on their devices. We highly recommend using Lenovo's\nfeedback channels to report bugs and feedback that are specific to their\ndevices.\n\n\n[Go to Lenovo's preview site](https://dev.lenovo.com/home/puahAndroid12)\n\nGet 12L on a Google Pixel device\n--------------------------------\n\nIf you have a supported Google Pixel device, you can [check and update your\nAndroid version](https://support.google.com/pixelphone/answer/7680439) to\nreceive 12L over the air.\n\nIn most cases, you don't need to do a full reset of your data to move to 12L,\nbut it's recommended that you back up data before installing 12L on your device.\n\n12L OTAs and downloads are available for the following Google Pixel\ndevices:\n\n- Pixel 3a and 3a XL\n- Pixel 4 and 4 XL\n- Pixel 4a and 4a (5G)\n- Pixel 5 and Pixel 5a\n- Pixel 6 and 6 Pro\n\n| **Note:** Future Android 12 platform updates might not be available for some of these devices if the device's support window has passed.\n\n### Flash or manually install a system image\n\nAlternatively, if you'd rather flash your device, we recommend using the\n[Android Flash Tool](https://flash.android.com/release/12.1.0).\n\n\n[Flash 12L to a supported device](https://flash.android.com/release/12.1.0)\n\nIf you need to flash your device manually for some other reason, you can get the\n12L system image for your device on the [Pixel downloads\npage](https://developers.google.com/android/images). Read the general\ninstructions for how to [flash a system\nimage](https://developers.google.com/android/images#instructions) to your\ndevice. This approach can be useful when you need more control over testing,\nsuch as for automated testing or regression testing.\n\nGet a generic system image (GSI)\n--------------------------------\n\nAndroid [Generic System Image (GSI)](/topic/generic-system-image) binaries\nare available to developers for app testing and validation purposes on supported\nTreble-compliant devices. You can use these images to address any compatibility\nissues with 12L as well as discover and report OS and framework issues\nbefore 12L is officially released.\n\nSee the [GSI documentation](/topic/generic-system-image) for device\nrequirements, flashing instructions, and information on choosing the right image\ntype for your device. Once you're ready to download a GSI binary, see the\n[Android 12 GSI section](/topic/generic-system-image/releases#android-gsi-12) on\nthe GSI releases page.\n\nNext steps\n----------\n\nAfter you have a device configured for 12L, here are some things to do next:\n\n- [Learn more about what's in 12L](/about/versions/12/12L/summary)\n- [Learn what to look for and test in your app](/about/versions/12/12L/summary#what-to-test)\n- [Optimize your app for large screens](/large-screens)\n- [Set up the 12L SDK](/about/versions/12/12L/setup-sdk)"]]
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