First post--be gentle. Can't find any posts on Android Studio 4.0, so I hope this isn't a repeat. I updated Android Studio from 3.6.3 to 4.0 on Windows 10 (1909). Had created a couple of virtual devices in 3.6.3 (a Pixel 2 running API 28 and a Pixel 3 running API 29)--both worked great in AS-3.6.3 and I could develop apps, compile, load, and run them with no problem.
After the update to AS-4.0, the virtual devices no longer appear in the devices box at the top of the GUI--it just says "No Devices". When I open the AVD Manager, I can see them, and I can start them (although when I start them I get a pop-up saying "AVD Manager: Unable to locate adb"), but I can't get any code to download and execute on it. On the Pixel 3 emulator, I also get another pop-up saying "Detected ADB: Could not automatically detect an ADB binary.", and it gives instructions to resolve it, which don't make any difference (jump into extended controls and toggle "Use detected ADB location").
When I try to open a past project and run it, I get the same behavior--no devices found.
I've also tried making new emulators, hoping the new setup would recognize them, but to no avail. Tried starting and restarting AS, as well as the computer, also to no avail. I have Android SDK Build-Tools 30-rc4, the latest Android SDK Command-line Tools, Android Emulator 30.0.12 Android SDK Platform-Tools 30.0.1, and the Intel x86 Emulator Accelerator all installed.
I've Googled and spoken words of fierce power over this for several days now. Any suggestions for how to get AS-4.0 to recognize the emulators? I've resisted uninstalling everything and starting over--was hoping it was just a configuration thing.
Thanks in advance,
Uber
After some more Googling, I found the answer here (I think my constraint of wanting an answer for AS-4.0 specifically kept me from finding it):
Could not automatically detect an ADB binary - Android Studio
I had to redownload the SDK platform-tools zip file and reinstall it. I don't know why the old one got messed up with the migration from AS-3.6.3 to 4.0, but there you go--such is life with complicated software.
As soon as I replaced the old platform-tools directory with the new one, all my old emulators showed up and I was back in business.
Thanks anyway!
Uber
I am using Windows 10 and when I launch the Virtual Device Emulator in Android Studio I keep getting the message which reads:
"The ADB binary at C:\Users\siviw\AppData\Local\Android\Sdk\platform-tools\adb.exe is obsolete and has serious performance problems with the Android Emulator. Please update to a newer version to get significantly faster app / file transfer".
I am a new developer with little experience. What do I need to update to a newer version so that message is no longer shown?
I am new to android as well. dkalev's answer is correct but not very descriptive for a new user. I have outlined the steps below.
Double Shift to open the search box
Type SDK Manager
In the results shown click "SDK Manager"
In the window that opens click the second tab "SDK Tools". You should see that there is an update available for SDK Build-Tools on the first line
Check "Show Package Details" in the lower right hand corner
Scroll to the last (latest version) item under "SDK Build-Tools" and check the box. (Mine was 28.0.1)
Click "Apply"
In the dialogue box that pops up, click "OK"
When the installer finishes, click "Finish"
Uncheck "Show Package Details" and look at "Android SDK Build-Tools" (first line). There should be no update available and it should say "Installed"
Click "OK" to close the SDK Manager
For me, update SDK doesn't help. I solve this problem by unchecking the emulator option "Use detected ADB location". Give it a try.
I had the same problem and solved it by updating the Android SDK Build-Tools. Open the SDK manager in Android studio (double shift and type SDK manager). Then on the second tab (SDK Tools) update the Android SDK Build-Tools and the error message should go away.
This is an years old bug.
Check your adb version like this : (the adb path is given with the error itself)
C:\Users\<your_user_name_>\AppData\Local\Android\Sdk\platform-tools\adb.exe --version
output :
Android Debug Bridge version 1.0.41
Version 29.0.4-5871666
Installed as C:\Users\sunil\AppData\Local\Android\Sdk\platform-tools\adb.exe
It means this adb comes from the latest sdk platform tools 29.0.4.
Check the latest version from official site here.
If you already have the latest version of ADB installed, and still getting the error, this is a known issue. Google hasn't yet provided any other ADB. Click on the "never show again" option and continue.
17-01-2019
This works for me.
Just opened Android SDK Manager Then it showed 4 Updates Available. So I just Updated it and No more above warning.
Had the same issue but in my case the fix was slightly different, as no updates were showing for the Android SDK Tools. I opened the Virtual Device Manager and realised my emulator was running API 27. Checked back in the SDK Manager and I didn't have API 27 SDK Tools installed at all. Installing v 27 resolved the issue for me.
In my case what removed this message was (After updating everything) deleting the emulator and creating a new one.
Manually updating the adb didn't solved this for. Nor updating via the Android studio Gui.
In my case it seems that since the emulator was created with "old" components it keep showing the message. I had three emulators, just deleted them all and created a new one. For my surprise when it started the message was no more.
Cannot tell if performance is better or not. The message just didn't came up. Also I have everything updated to the latest (emulators and sdk).
This happened to me. And, in my case I need Android SDK Platform 29 because I am using react native 0.63 and Android 10 (Q). I had to uninstall Android SDK Platform 28 because it was the one that caused the warning.
I found this video See Here explaining the process.
Open Android Studio then click on configure
Go to SDK Manager
Go to SDK Tools and click show package details
Uncheck Android SDK Platform 28 (OBS: for me) and Apply
Click OK and Finish.
With this I was able eliminate the warning.
I had the same problem and solved it by updating the Android SDK Build-Tools in Android Studio.
step 1 - Double shift and type SDK manager, this will open the SDK manager
step 2 - Then on the second tab (SDK Tools), update the Android SDK Build-Tools and the error message should go away.
if this does not resolve check the option in Setting tab,use detected Adb tool in Setting tab
(You mentioned you are new to Android Studio) so I recommend pressing the Android Studio > Help > Check for updates... button that will update your environment.
I solved this error by uninstalling two older SDK build tools versions, leaving only the most recent one.
The solution that worked for me -
I closed my Android Studio.
I visited this site - https://androidstudio.io/downloads/tools/download-the-latest-version-of-adb.exe.html
From there I downloaded the latest adb.zip file
I unzipped the folder and copied the 3 files -
adb.exe
AdbWinApi.dll
AdbWinUsbApi.dll
I went to the folder - C:\Users\PayelSenapati\AppData\Local\Android\Sdk\platform-tools
There I replaced the old files by the new files. (Paste followed by replace the existing files)
Then I reopened my Android Studio, opened my virtual android device. Everything went fine. The error was no more.
In the SDK Manager, in the SDK Tools tab, check if you have any updates, if not, deselect "Hide Obsolete Packages" and check if you have something marked as (obsolete) if so, deselect the item and apply. In my case, it was the Android SDK Tools.
First you need to check which SDK your Emulator is using and as #kuya suggested you need to follow those steps and install the latest version of that SDK Build Tool. Suppose your Emulator uses SDK 27 then you need to install latest in that series. For me it was 27.0.3. After that the error was gone.
Try factory reset to virtual device from Android Device Manager
None of the top-voted answers worked for me, except when I unchecked "Use detected ADB location" as mentioned above by #褚阳光. Fortunately, in my case though, the message didn't show up, even when I turned it back on. In other words, the problem might be resolved by restarting "Use detected ADB location" :)
Try update your SDK Tools items, and then delete all currently created emulator and recreate again. it works for me
This might sound normal but I was getting the same error but just updated it and it worked now without any error. I suggests anyone to try for updates first.
If you are stuck after following each of the steps outlined in above, I will suggest you combine more than one answers. The answers of #Kuya and #褚阳光 worked for me. Try them out. I can explain more if the steps are yielding results for you.
This can also be an issue with hyper-v settings on Windows 10 pro. Because with this error I was facing BSOD - https://www.techclassy.com/fix-hypervisor-error-bsod/
I faced the same issue, and I tried following things, which didn't work:
Deleting the existing AVD and creating a new one.
Uninstall latest-existing and older versions (if you have) of SDK-Tools and SDK-Build-Tools and installing new ones.
What worked for me was uninstalling and re-installing latest PLATFORM-TOOLS, where adb actually resides.
I got this error and I tried all the possible solutions that I found on every site, nothing worked.
I was working with flutter, and the command flutter doctor showed me that I need to accept a few agreements
I did that and ADB started to work
So conclusion:
If nothing works, install flutter, run flutter doctor, execute the commands that flutter doctor suggests to you. This should solve your problem
the command was: flutter doctor --android-licenses
I followed the answer, but the magic final step was deleting the existing virtual environment and creating a new one.
I downloaded Android Studio 3.1 and created a project. I did nothing in it and ran the project. Do I need to install any image?
Initial Screen - API version
Below screen comes when i click on run
I had Android version 2.2.2. I uninstalled it and installed version 3. After this, I was unable to download image for emulator.
I finally had to format the drive to get everything done again in first time.
you need to set your console to developer mode (i'm windows 10 user)
if you windows 10 user go to setting - update&security - for developers -
choose developer mode at use developer features
You need an emulator if you do not want to run your app directly in an physical android device. However, check if your PC supports or have libraries to run an emulator
NO, just check your PC config to run an emulator. Or you can download an emulator to run your app on Pc.There are many emulators with fewer config requirements.
You need the image to use simulator, besides, you may also need to change BIOS setting to enable virtualization if you are using Windows OS
I recently upgraded Android Studio to 2.0 (Windows) which broke the emulator.
The symptom is that the emulator starts a (single thread) process that takes about 100% of its CPU. Nothing shows on the screen.
Of course, this worked like a charm before the update.
Few things I tried:
Used an AVD created before and after the update
Increased AVD memory to 1G
Delete / Install Android Studio
Used different CPU Architecture (Arm & x86)
Used different versions of API (21 & 23)
I had the same problem I had to reinstall android studio all over again, After that open your SDK monitor press on launch stand alone SDK manager, There scroll down and check if the emulator is installed properly if not install it.
I hope this answer helped you since that's what I did and it works.
A temporary solution:
Go into the AVD Manager, select the Virtual device, and click "Edit"
Find "Emulated Performance" -> Graphics, and switch that from auto (or hardware) to Software.
It won't have quite the performance, but this worked for me. Seems to be that Android Studio 2.0 doesn't play well with certain graphics cards or something.
hey guys im not new to java but this android studio thing, im definitely not used to it,
so i just want to know what packages/tools i need to download from the sdk manager to get me started (im currently dev' apps to be run on api 2.3 gingerbread devices )
From the sdk manager this is what i did,
i downloaded and installed all the latest android sdk build tools,sdk platiform for 4.4 and 5.0
then i also downloaded the whole 2.3 api 10 since its what i was developing for....
after that when i start android studio,just right in the work space where you see the 'package' menu
i get nothing displaying,i mean even all the api i installed i still get nothing.
anybody who been using this tool can gimme help.thx
kind regards C.B!
When you open SDK manager, right click on the .exe and select
"Run As Administrator".
Don't open it from within android studio, find the exe file on your machine. Worked for me when I ran into that problem.
EDIT: You may need to download the sdk separately form here: https://developer.android.com/sdk/index.html?hl=i
Click VIEW ALL DOWNLOADS and pick the appropriate 'sdk only' download for your machine.