After the macOS Big Sur, 11.0.1 update, the Android emulator began to display image rendering issues.
Issue
The emulator display window is repeating the device image. An issue has been documented in Android's IssueTracker.
Conditions
- Re-sizing: When the emulator window is resized, increased or decreased
- Orientation change: Portrait to landscape, and vice-versa
Attempted Solutions
- Clear the emulator with Wipe Data from the Android Device Manager.
- Create a new emulator instance.
Configuration
Android Studio
- Android Studio 4.1.1
- Build #AI-201.8743.12.41.6953283, built on November 4, 2020
- Runtime version: 1.8.0_242-release-1644-b3-6915495 x86_64
- VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
- macOS 10.16
- GC: ParNew, ConcurrentMarkSweep
- Memory: 1979M
- Cores: 16
- Registry: ide.new.welcome.screen.force=true, external.system.auto.import.disabled=true
Non-Bundled Plugins: com.android.tool.sizereduction.plugin, com.thoughtworks.gauge, org.jetbrains.kotlin, cn.wjdghd.unique.plugin.id, mobi.hsz.idea.gitignore, com.developerphil.adbidea
Emulator
- Name: Pixel_3a_API_29
- CPU/ABI: Google Play Intel Atom (x86)
- Path: /Users/adamhurwitz/.android/avd/Pixel_3a_API_29.avd
- Target: google_apis_playstore [Google Play] (API level 29)
- Skin: 1080x2220
- SD Card: 512M
- fastboot.chosenSnapshotFile:
- runtime.network.speed: full
- hw.accelerometer: yes
- hw.device.name: pixel_3a
- hw.lcd.width: 1080
- hw.initialOrientation: Portrait
- image.androidVersion.api: 29
- tag.id: google_apis_playstore
- hw.mainKeys: no
- hw.camera.front: emulated
- avd.ini.displayname: Pixel 3a API 29
- hw.gpu.mode: auto
- hw.ramSize: 1536
- PlayStore.enabled: true
- fastboot.forceColdBoot: no
- hw.cpu.ncore: 4
- hw.keyboard: yes
- hw.sensors.proximity: yes
- hw.dPad: no
- hw.lcd.height: 2220
- vm.heapSize: 256
- skin.dynamic: yes
- hw.device.manufacturer: Google
- hw.gps: yes
- skin.path.backup: _no_skin
- hw.audioInput: yes
- image.sysdir.1: system-images/android-29/google_apis_playstore/x86/
- showDeviceFrame: no
- hw.camera.back: virtualscene
- AvdId: Pixel_3a_API_29
- hw.lcd.density: 440
- hw.arc: false
- hw.device.hash2: MD5:0e6953ebf01bdc6b33a2f54746629c50
- fastboot.forceChosenSnapshotBoot: no
- fastboot.forceFastBoot: yes
- hw.trackBall: no
- hw.battery: yes
- hw.sdCard: yes
- tag.display: Google Play
- runtime.network.latency: none
- disk.dataPartition.size: 6442450944
- hw.sensors.orientation: yes
- avd.ini.encoding: UTF-8
- hw.gpu.enabled: yes
Why is my android emulator so laggy?
Running multiple programs at once on your PC can cause performance issues. While running Android emulator for playing heavy games, you should always avoid using up the RAM of your computer. This will cause severe lag to your PC. You can close unwanted programs by going to "Task Manager".
How do I update Android emulator on Mac?
Open the Preferences window by clicking File > Settings (on Mac, Android Studio > Preferences). In the left panel, click Appearance & Behavior > System Settings > Updates. Be sure that Automatically check for updates is checked, then select a channel from the drop-down list (see figure 1). Click Apply or OK.
I am having the same problem, after upgrade for Big Sur.
I find out a workaround... after resize, click twice on magnifying glass.
On some emulators this don't work. In this cases try Settings/Show window frame around device - turn off/turn on. This works for me.
I think I have found a temporary solution. If you are using another monitor with your computer just move the emulator between displays after resizing it. It is adjusting itself in this way
It seems that upgrading android studio (4.1.2), the emulator, and SDK tools fixes the issue since 2021.
After updating Android Studio, go to the preferences for Android Studio > Appearance & Behavior > System Settings > Android SDK > SDK Tools (tab) and select Android Emulator (I used 30.3.5), Android SDK Tools (26.1.1), and maybe the Android SDK Build-tools.
Disclaimer: These steps solved it for me. It might well be that only updating the "Android Emulator" SDK tool would have been enough.
A simple workaroud is to just hide and show it again.
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