Develop Reference

android studio emulator won't start/show up

I'm new to Android/Kotlin programming (not to programming in general) and I'm following the Kotlin Basics course on developer.android.com.
The very first lesson after having installed Android Studio is to create a Virtual Device and run an extremely basic app on it.
However I can't get the emulator to work. The very first time I tried, it opened a small window with a progress bar but it became unresponsive at around 1/4 progress and I had to eventually kill it.
Since then it just won't start/open.
After I click run, the code compiles and the Event Log within Android Studio says Executing tasks[...] then Gradle build finished[...] and that's it. Nothing happens beyond that and the Emulator window says "No emulators are currently running".
However:
Some emulator-related processes have been started. Those processes stay alive even after closing Android Studio..
If I try to start the AVD from within the device manager, I get an error message that the device is already running
I am unable to delete these .lock files without killing the aforementioned processes
What I could find:
The Windows Event Viewer shows an Application Error
The Android Studio log file also shows an Error
I don't know what to do with either of these messages, though
What I tried
Killing the emulator processes, removing the *.lock files and trying again.
Creating a different AVD (different device, different version of Android)
Completely reinstalling Android Studio and the SDK following the accepted answer to this question: How to completely uninstall Android Studio from windows(v10)?.
None of this had any effect.
I'm running Android Studio Arctic Fox (2020.3.1 Patch 4) on Windows 10 Pro (10.0.19042 Build 19042).
I am able to run the app on my actual phone but down the line I would like to be able to test apps on different types of devices or without having to always use my physical one.
All help would be greatly appreciated.

By running and emulator.exe command in a command prompt, I was able to see yet another error message, the same one as in this post: emulator: incompatible HAX module version 3 requirs minimum version 4, and the answer to that post from user Harold Sota (as well as the comment under it from Harun, more specific to my situation) solved the issue.

Emulator always crashes with error "Error While waiting for device: The emulator process for AVD has terminated"

I'm now stuck assuming its hardware, but wouldn't make too much sense as it used to work before, and just stopped out of nowhere.
Yesterday the whole day, when trying to open emulator on any device, in any api, in any app (including opening just the emulator by itself), I get This crash message.
I've tried uninstalling and installing android studio, and didn't work. I ended up fully formatting my pc, and installing AS again. The error persisted in the first 3 runs, and after creating a device running api 28, it shows This error (that I have had before). When I used to see it, I would still be able to run the app, but now it was just a black screen.
I found out that even though I installed the latest recommended version of AS, it didn't come with abd.exe. I downloaded the plstform-tools.zip, and when adding everything inside my sdk folder, avd stopped working. I decided to only add instead, the abd.exe file. Avd opened again, but the screen still stayed black.
I'm running amd Radeon 7500, so I decided to try an emulator running ARM64. The emulator just loads forever, but never opens up.
Right now, when I try to run api 29 or 30, instead of getting the same crash message as usual, I will just get a pop up saying the emulator was terminated, and shows in console log "error while waiting for the device: emulator proccess for avd was killed"
To add: for some random reason, all my installations today and yesterday, did not include an uninstall.exe
I tried opening emulator using CMD, and the error I get is
"cannot add library vulkan-1.dll: failed
cannot add library vulkan-1.dll: failed"
I have seen this error online, but seems like it usually shows an extra line saying "Emulator terminated with exit code" Mine does not have that.
I also have tried using Emulated performance in Software mode

Someone at Reddit was able to help me:
for anyone that gets stuck here in the future, try this:
open c:\Users(user name).Android and create a file called “advancedFeatures.ini”. In this file, write:
Vulkan = off
GLDirectMem = on

How can i fix android studio emulator run problem?

I have some trouble about android studio. if anybody know this program, please read description of my problem.
I created empty activity project android 5.0(lolipop) and just click run by emulator. I already tried different kind of devices, but the error is the same. My friends have no problem like that.
please tell me what to do.screenshot of emulator error message and photo of log error
updated event log after trying reinstall emulator devices

Do you have Bandicam installed like it's suggesting? It's complaining about your Vulkan drivers ( you could update those) and Bandicam messing with them (you could uninstall that).
Alternatively you can open your AVD Manager, edit the AVD you're using, and set Emulated Performance: Graphics to Software (can't do it on every image for some reason - my API 29 Pixel 3 image won't let me change it, my API 30 Pixel 3XL image will). It'll run worse, but it'll run (well it should anyway)

If you use the flatpak of android studio on linux, run "flatpak update" and that should resolve your issues.
If you don't use the flatpak on linux, try restarting your machine and if that doesn't work, do a clean reinstall of your graphics driver.
Don't know why people keep trying to recommend software rendering, it's horrible and not at all practical, it's a barely working workaround not a solution.

Android Studio: Unable to obtain result of 'adb version'

I am trying to start development on an Android app using Android Studio, but whenever I try to run the app I get the error Unable to obtain result of 'adb version' I have tried uninstalling and reinstalling Android Studio multiple times on different computers (both running Windows 10) and every time I get the same error. I have researched the problem and have been unable to find a consistent solution. (or one that actually works) I am very new to Android development and am slightly at a loss as to what to do; any help on solving this problem would be much appreciated.

Found the solution thanks to #user3109468, Android Studio had the directory for the Android SDK wrong. In File>Project Structure make sure the directory for the SDK is correct; mine was C:\Users\[user]\AppData\Local\Android\sdk (Google had given sdk a capital "S" for some reason...)

Uncheck: enable adb integration from Tools>Android and re-enable it.
This worked for me.

This might be because of windows virtual memory problem.
Try running adb from command line. something like
adb version BTW, platform-tools would be located in
c:\Users\<your userid>\AppData\Local\Android\sdk\platform-tools
How much it takes from you firing a command and actually gets an answer ?
if it takes more than 5 seconds, then android studio times out waiting for an answer and throws up an error.
How to fix ?
close all your program ( Process ? )
and go to control panel -> System->advance System settings-> Advanced tab->performance->settings->Advance->Virtual memory change
Try to reduce virtual memory size. Fr e.g. If it's 4096Mb make it 2048Mb ( both initial and maximum) It will ask to restart, so restart and get yourself a cup of coffee, because it will take a while. Then, once your system is up , try running adb version. Does it run quickly ? If yes, problem is fixed. Go back to virtual memory and increase it's size to the one before, and that's it.
BTW, I noticed in my case that simple hello world program was taking 20 sec to execute on my machine before fixing virtual memory problem.

Make sure Android SDK location and Android NDK location is correct.
Go to File -> Project Structure.
Set the Android SDK location and Android NDK location.

"There is not enough storage space on the device to store package" when starting Android emulator

I have just updated Xamarin in Visual Studio 2015 (it was a suggested update from Visual Studio).
After the update, when I start debugging with the emulator AVD_GalaxyNexus_ToolsForApacheCordova (Android 4.4 - API 19), the following error occurs:
The "InstallPackageAssemblies" task failed unexpectedly.
System.AggregateException: One or more errors occurred. ---> Xamarin.AndroidTools.AndroidDeploymentException: InternalError ---> Mono.AndroidTools.InsufficientSpaceException: There is not enough storage space on the device to store package: /data/local/tmp/Mono.Android.Platform.ApiLevel_23.apk. Free up some space or use an SD card and try again.
This did not occur just minutes before the update, and the project remained untouched during the update. I am quite sure about that.
The Xamarin documentation has this error documented here, and says:
There is not enough storage space on the device to deploy the package
This occurs when you don't start the emulator from within Visual Studio. When starting the emulator outside of Visual Studio, you need to pass the -partition-size 512 options, e.g.
emulator -partition-size 512 -avd MonoDroid
But I did start the emulator from within Visual Studio.

Check the internal storage size and available storage of your emulator. Default configuration is often not very large.

On MAC if your getting error make sure you increase your dataPartition to 1024M
disk.dataPartition.size : 1024M
On Mac current config: Feel free to add more bytes if you have a better potato(MacBook pro) than mine

Emulator memory issue
increase heap size ( make it 2*x).
in my case before it was 256 , then after i made it 512 , now its working fine.
posted by venkat Yanamandala

Cobus answer didn't help for me. Checking the device's storage, I saw that there should be more than enough space left to deploy my app. My only solution so far is to create new device in the emulator every time this happens. It keeps happening after I deployed my app several times (like 50+ deploys).

I just clean solution and rebuild again it.

I encountered with the same issue and managed to resolve it by simply uninstall the previous versions from ADB emulator. To uninstall:
.run the emulator.
.Drag&Drop the application's icon to the trash.

These following steps work for me
Increase Data diskpartition size 1024MB
Clean and rebuild again

I solved this question by cleaning the android system cache, there are several tools in the playstore for it, im my case i was debbuging with a attached device, so there was nothing to do with the emulator settings.