Develop Reference

Android studio won't start (Unable to create JVM error)

Android studio was working fine till today morning but when I opened studio today it shows can't start. Shows error:
Searched the internet and SO, but couldn't find the answer. any suggestion will be appreciated.
i have set the JAVA_HOME path correctly. i have used studio and developed projects also using it.

Try this also
Delete this file : (Tested on Windows)
%USERPROFILE%\.AndroidStudiox.x\studio64.exe.vmoptions
(Keeping a backup of this file is recommended)
replace x.x with your Android studio version
The file is used to manually set java virtual machine parameters for android studio.
Faulty configuration might cause the software not to start.

You have to try to rename .AndroidStudio2.x.
please refer to topic - JDK error when trying to start Android Studio

Very simple trick worked for me.Though JAVA_HOME was set, it was giving an error.
To make it correct, close the error message window first, then go to environment variable settings of the system, say Edit JAVA_HOME, do not edit just say save/ok. and restart the Android Studio.
Tada... its happily working ever after :) !

Android Studio cannot use secure connection for update, complaining the use of Java 6

In Android Studio's Preferences -> Appearance & Behavior -> System Settings -> Updates, I tried to enable the Use secure connection option:
But when I clicked the Apply button, the error "Secure connection is not supported on Java 6" showed up:
I checked the JDK location setting in Project Structure, and it's /Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home:
It seems that I'm using Java 7, not Java 6. Then why the secure connection setting complains about not supported by Java 6?
In case needed, below is the installed JDKs on my machine:
The first one 1.6.0.jdk is from Apple, and the other 3 are from Oracle.

This problem occurs on Mac OS.
The project JDK (the JDK used for compiling your code) is different from the IDE JDK (the JDK used to run the IDE)
Your project JDK is 7, but your IDE JDK is 6.
For your case, you can add an environment variable for the IDE (by Terminal) as below:
export STUDIO_JDK=/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk
Check these documents for more information:
http://tools.android.com/tech-docs/configuration/osx-jdk
http://tools.android.com/tech-docs/configuration
Happy coding!

Exporting environment variable didn't work for me. Editing plist file did.
nano /Applications/Android\ Studio.app/Contents/Info.plist
And find this line:
<key>JVMVersion</key>
<string>1.6*</string>
Change the value from 1.6* to 1.7+

Its seems to be a bug that has already been documented by project members (link). This bug has been there for quite sometime it seems. The screenshot attached in the thread in which this issue is being discussed is definitely of an older version than Android Studio 2.0
At this stage I'm unable to find anything related to changing JRE for Android Studio or Intellij. You can change the JDK, but that has no effect on this error warning.
Will update this thread as more information becomes available on tackling this issue.

Visual Studio 2015 Xamarin deploy fail without any error message

I just installed VS 2015, the installation was finish (after some fail time caused by the slow network, I run setup again).
I create a project as Android > Android blank project
When I press F5, the build is seem to by success but the deploy is fail, there isn't error message. Tried set Tool->Option->Build->Diagnostic, no result. VS 2015 is pretty new, is anyone met this? How can I fix this?

I bumped into the same, but I started VS2015 as Administrator and solved the problem.

Is any Android Virtual Device running?
Open AVD menu
Launch the device
Wait for it to fully load
Build and deploy
Find your app in device's menu and execute it

Visual Studio gets stuck trying to deploy the app to the emulator or the emulator does not appear as a debug target in other IDEs
If the emulator is running, but it does not appear to be connected to ADB (Android Debug Bridge) or it does not appear in Android tools that make use of ADB (for example, Android Studio or Eclipse), you may need to adjust where the emulator looks for ADB.
The emulator uses a registry key to identify the base location of your Android SDK, and looks for the \platform-tools\adb.exe file under that directory. To modify the Android SDK path used by the emulator:
Open Registry Editor by selecting Run from the Start buttons context menu, typing regedit in the dialog box, and choosing OK.
Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Android SDK Tools in the folder tree on the left.
Modify the Path registry variable to match the path to your Android SDK.
Restart the emulator and you should now be able to see the emulator connected to ADB and associated Android tools.

And yet another recipe of fixing this:
clean projects
remove all bin, obj folders
mark your android-project
as startup
then try to deploy again
As for me, in some cases, if visual studio stucked on project building, it requires pc reboot.

I had the same annoying issue. Going to Options -> Xamarin -> Android Setting and checking Preserve application data/cache on device between deploys solved my problem.

I was facing same issue.
Just reopen visual studio and rebuild your project..and then try to deploy.
Its worked for me!

According to Magnus Grindal Bakken's comment, I found the solution.
1) The installation must have an internet connection to be completed.
Any interruption may cause components to be excluded.
2) You need android emulator. Installing the Android SDK and Visual Studio 2015, is not sufficient, You either need the Microsoft emulator, the android one or another third party emulator (like Genymotion). You also need to ensure that the Xamarin plugins for Visual Studio are installed.
Xamarin for Visual Studio can be downloaded here. Once it is installed Visual Studio will be able to create and run Xamarin projects. Xamarin for VS includes the Xamarin Player for emulation. I think it's even better than Genymotion.

Start emulator via AVD manger ... [start] button (as user m93a suggested).
And next option contains check option "wipe user data". Check it !
It helps me solve this problem. Then deploy or debug the application and all process will works as expected.

I had the same problem with my XF App, it didn't deploy and just one message saying Deployment Failed, internal error....
I solved it. Working on Mac with Xamarin Studio, make sure that the ABI of your simulator is supported by your app.
Xamarin Studio Android project Options

Just run your Visual studio as Administrator mode.

Sometimes the physical Android device gets confused about versions.
On the device, to go settings | Applications Manager | All applications.
Manually delete your application.
Manually delete "Mono Shared Runtime" (don't worry it will reinstall during deploy)
Make any change in your project so it is seen as altered and needing to be recompiled: Add a new blank-line to a .cs file or something.
Build
Debug/deploy

I faced that problem couple hours ago, I tried to deactivate hyper-V and it worked for me.

In the Android App project Properties in Visual Studio I had to go to Android Options>Advanced and make sure the Support architectures had the architecture of my AVD checked.
In my case this was x86_64 (which, by the way, does not have a particularly discovereable method of installation - took me days).

First of all, we can find the error in "Details" when we click "Start" button on "AVD Manager" for "Android_Accelerated_x86". If the error is as follows :
Please ensure Intel HAXM is properly installed and usable. CPU
acceleration status: HAXM is not installed on this machine
So, in this case we need to install "Intel® Hardware Accelerated Execution Manager". It can be downloaded from following link :
haxm-windows_v6_0_6.zip (6.0.6)
Note: After installing Xamarin for the first time in visual studio 2015 i had the same error to run "Android_Accelerated_x86". After installing this accelerated emulator is now up and running.

If the emulator does not even lauch, maybe deploy is skipped.
You cas see this in the output console.
If so, you may have to activate the deploy by checking it in the solution's (not project) parameters.
If the emulator launches but the deploy won't end after minutes, with no error, try the steps described here : https://stackoverflow.com/a/32564067/7505268
That solved it for me.

I had Xamarin Android Player opened while trying to deploy the Android project. This steps worked for me:
Closed Xamarin Android Player
Ran Android project again

in my case I had this problem because "Solution Configuration" was set to Release. I change it back to Debug and I solve the problem

Try one of the following and see if you can get the app to deploy to your device.
Clean and build project/solution
Make sure you have updated all the NuGet packages (Right click on solution and click on Manage NuGet Packages.... Then check in Updates section whether there are any updates)
Make sure you have installed all the necessary SDKs from the Android SDK Manager
Check whether you have selected the correct project as the startup
Check if you have set the correct path for Android SDK and NDK locations
Make sure you have checked Deploy for your selected project from Build -> Configuration Manager

Well there can be many reasons,one of them could be that from the Build section in your toolbar,if you check the configuration manager there will be project names that are available in your current solution all you have to check is if the deploy checkbox is checked or not.If not kindly check it and things will work just fine

This worked for me:
Making sure that Define DEBUG constant is checked.
Using Log.Info("yourTag-AnyString", "Error before/after ");
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
// Set our view from the "main" layout resource
Log.Info(tag, "Error before Layout");
SetContentView(Resource.Layout.Main);
// Get our button from the layout resource,
// and attach an event to it
//Button button = FindViewById<Button>(Resource.Id.MyButton);
//button.Click += delegate { button.Text = string.Format("{0} clicks!", count++); };
Log.Info(tag, "Error before variables");
userName = FindViewById<EditText>(Resource.Id.editTextUsername);
password = FindViewById<EditText>(Resource.Id.editTextPassword);
btnInsert = FindViewById<Button>(Resource.Id.btnInsert);
Log.Info(tag, "Error after variables");
btnInsert.Click += BtnInsert_Click;
}
changing emulators or exporting the signed .apk instead
For android apps, using android device logging

There is actually a connection between running Visual Studio as administrator and setting the registry path.
I followed the instructions here but it only worked after running VS as admin because my Android SDK path is in "C:\Program Files (x86)". So in order to add or change files there you need admin rights. Alternatively you can change the permissions of the "Android" folder so that the group "Users" as full access. This worked for me as well.
Or you make sure you don't even install the Android SDK in "C:\Program Files (x86)".
By the way I found that restarting VS, or even the Emulator again wasn't necessary after I added the registry key. It picks it up when it needs to.

Android Studio freezes on startup

I searched all day but haven't find a solution yet.
Today I installed Android Studio without any problems.
I added the correct path.
JAVA_HOME to C:\Program Files\Java\jdk1.8.0_20
and
JDK_HOME to C:\Program Files\Java\jdk1.8.0_20
But, when I start the program it freezes on the loading screen. (The gray picture with the green android logo and text Android Studio)
It does create a process that I can't close, but after waiting for 20 minutes it's still on that screen.
I tried a clean install, also I tried the 32bit version without any success because it complained about the jvm that I could not fix for some reason.
I also did an update for it, but without success.
I have no idea what else I can try to fix this, but I also don't see myself going back to eclipse.

What worked for me was to disconnect my android phone which was connected to the computer(in the debugging mode).

I went from 1.5 to 2.0 and after updating it wouldn't load (hung at the startup screen). I had to delete the .android folder, the android.15 folder and the .AndroidStudioPreview2.0 folder under user. I also had to rename the SDK folder and after it started up I rename it back to what it was. Which means I had to add the path back to android studio. This was the only way I got it to work.

The same issue. "Run as administrator" helped me.

Another possible solution comes from JLund (from the comments):
I did this from the command line:
adb kill-server
adb start-server
and that unfroze Android Studio at startup for me.

Make sure there is no ANDROID_SDK_HOME, ANDROID_HOME or the like defined as you environment variable. You might need to uninstall any Android SDK previously installed manually after removing those environment variable.

My Android Studio auto loads the last worked-on project.
I cancelled the loading project before the IDE hung.
The Android Studio launcher comes up. Select the "Open an existing..." option.
Windows 10
Java 1.8.0_131
Android Studio 3.2.1

Android Studio kept getting hung up on a white screen before the IDE loaded any buttons. I renamed the project that it was trying to load, restarted Android Studio, and selected another project and it loaded correctly.

I had to revamp all manually installed 'HOME' environments and start it again-

Android studio isn't opening on Windows

I just downloaded and installed Android Studio. For whatever reason, it won't open. I've tried running it as administrator, but that doesn't seem to work either. I've also tried uninstalling and reinstalling, but I'm still having this same problem.

On windows open task manager and check if android studio is there.
End the task and start the app again it works like a charm

Figured it out! I'm sure someone will run into this in the future, so here goes.
Even though it found my JDK during installation, it wasn't able to find it when I was trying to open it, for some reason. Simple fix. Add a JDK_HOME environment variable to your system variables. It should contain the path to your JDK's ROOT directory. i.e. c:\Program Files\Java\jdk1.7.0_21\

For me this technique works
Hover on icon, then hover on app
Press right click and select maximize

This link http://tools.android.com/knownissues lists another cause for the launcher malfunctioning.
I quote the link here:
"
On some systems the launcher script does not find where Java is installed. Workaround is to set a variable indicating the location of Java [b/55281]:
Open Start menu > computer > System Properties > Advanced System Properties
In the Advanced tab > Environment Variables, add new system variable JAVA_HOME that points to your JDK folder, for example C:\Program Files\Java\jdk1.7.0_21.
Another issue we found is that the launcher script uses an option that is unknown to Java on some system [b/55267]
Open the installation folder of Android Studio (e.g. C:\Programs Files\Android\android-studio, or C:\Users\\AppData\Local\Android\android-studio) and find the "bin" directory in there.
Open a "cmd.exe" (command prompt), cd to the android-studio\bin folder and run "studio.bat". You will most likely see an error: for example b/55267 is about the option -XX:+UseCodeCacheFlushing not being recognized. Report the error, remove the line from the studio.exe.vmoptions or studio64.exe.vmoptions and it should now work.
Apologies for this weak launcher."

OS: Windows 10 64bit
Need to delete below folder and try launch Android Studio again.
C:\Users\your_user_name\AppData\Roaming\Google\AndroidStudio4.1
Source: developer android

I am Installing Android Studio 4.1.1 in my Windows 10 and trying to open as normal as well run as administration both ways but did not open as regular.
When I saw in Task Manager then it was run as a background process then simply I was Endtask it in that background process and re-open. It works for me...!!!

Just add a JDK_HOME variable with the path of your JDK as value and start the IDE again. That's the only thing to do, hope this closes the other questions.

Windows 7 user:
I tried all the above ideas ( adding JDK_HOME, JAVA_HOME environment variables), but the final trick was to run as admin.
If that fails, try "where java" in cmd.exe.
If it lists c:\system32\java.exe first, then rename the file.

(i) Open the folder where android-studio is installed. (C:\Program Files (x86)\Android\android-studio)
(ii)- Right click on the android-studio folder and scroll to properties.
(iii)While in Properties window, click on Security.
(iv)Click the Edit Button
(v) Select User/Admin...or others
(vi)Check "Allow" in front of "Full control"
(vii) Either Apply or Press OK
....At this point you have to wait for it to install....Enjoy!!!
And I use Window 8...!!! So same thing applies to Window 7...wonder why the security on it...

I am on Windows 8 64 bit machine.
I already had JDK installed and jdk.1.7.0 folder was present in C:\Program Files\Java. But path for that folder didn't work. You must have jdk.1.7.xxx folder present on your machine and give that folder as JDK_HOME in Environment variable.
You can take latest JDK version from here
Make sure to choose Windows x64 version. Install JDK and then set your path. For those who are not sure how to set path in Windows 8, I have got following screenshots.
Go to bottom right corner. Click on Settings. Click on PC Info.
Click on Advanced System Setting link on left side.
Click on Environment Variables button. A Winodw will open with 2 listboxes. Click on New button below System variables listbox. New Window will pop up. Provide name as JDK_HOME and path as your path like "C:\Program Files\Java\jdk1.7.0_55". No need to take bin folder into the path.

None of the above mentioned solution worked for me. And there is no studio.bat file in bin directory.
So, I downloaded a 32-bit android-studio for my system (as it is 32bit) from here (official website) and it worked!
PS: The link might be broken in the future, just google for the 32 bit android studio.

(After wasting half a day on it, finally, I got it running)
I am running it on Windows 8.1. Also, I had JDK 1.7.0_13.
I tried the following:
Open Start menu > Computer > System Properties > Advanced System Properties In the Advanced tab > Environment Variables
Add new system variable JAVA_HOME that points to JDK folder, C:\Program Files\Java\jdk1.7.0_13\
Just to be on the safer side, also add new system variable JDK_HOME that points to JDK folder, for example, C:\Program Files\Java\jdk1.7.0_13\
Append new PATH in system variable that points to JDK folder, C:\Program Files\Java\jdk1.7.0_13\
But still it didn't work. Then it struck me that might be, my Java version is old. I downloaded the latest version from here.
I uninstalled JDK 1.7.0_13 and installed version 8 i.e. JDK 1.8.0_131.
Now do all the above steps but, replace the path with C:\Program Files\Java\jdk1.8.0_131\ OR whichever your latest version is.
Success!! Now it works.

In my case, I have existing projects and during trying the opening Android Studio, it just showed me the name of the project.
The thing I did was changing the name of that project and forcing Android Studio to ask me to choose which project at the beginning.

In my case, it was a windows related bug. Android Studio was configured properly and working like a charm, but it was opening in the second disconnected windows.
My solution was to press [Win] + Tab and then choose Android Studio on half of the screen so that it readjusts. Finally, I maximized it and it opened it in the correct screen.

I was able to resolve the same issue by refer to the solution provided in Android Developer Portal,
Studio doesn't start after upgrade
If Studio doesn't start after an upgrade, the problem may be due to an invalid Android Studio configuration imported from a previous version of Android Studio or an incompatible plugin. As a workaround, try deleting (or renaming, for backup purposes) the directory below, depending on the Android Studio version and operating system, and start Android Studio again. This will reset Android Studio to its default state, with all third-party plugins removed.
For Android Studio 4.1 and later:
Windows: %APPDATA%\Google\AndroidStudio Example: C:\Users\your_user_name\AppData\Roaming\Google\AndroidStudio4.1
macOS: ~/Library/Application Support/Google/AndroidStudio Example: ~/Library/Application Support/Google/AndroidStudio4.1
Linux: ~/.config/Google/AndroidStudio and ~/.local/share/Google/AndroidStudio Example: ~/.config/Google/AndroidStudio4.1 and ~/.local/share/Google/AndroidStudio4.1

In my case executing these in the command line worked after ending the Android Studio process in the task manager:
net stop winnat
net start winnat

Check the log file in :
C:\Users\<yourid>\.AndroidStudio<version>\system\log\idea.log
It might give you some clue.

You don't have to reinstall the Android Studio. In my case, I just deleted "C:\Users\User.AndroidStudio3.5" folder. Then Android Studio is opened. The folder contains just personel settings such as your ide theme darcula etc.

I invalidated cache and restartI deleted the Android studio version folder which was C:\Users\User.AndroidStudio3.5 for me and it worked like charm.

What worked for me was simply rebooting the computer. I'm certain that logging off and logging in will work to so the environment variables can refresh on profile level after installation.

Change the JAVA_HOME system environment variable to C:\Program Files\Android\Android Studio\jre
The direct path to installed java may not work sometimes due to version conflict.

I had Android studio crash on my machine crying about ram. Then it just wouldn't start again. Restarting th ecomputer wouldn't help and I know it has nothing to do with Java.
What ended up fixing it was runing Android Studio trough the Start Menu, or the instalation folder and not the pinned icon ...

Make sure you are not using two Languages (Hindi + English) as input method because android studio install required some time stamp and suppose you are using Hindi language that time and letters will not match at the time of opening
Solution is - select primary Language as English while installing Android Studio.
To change steps
press Windows
search word language
remove Hindi Language
then install Android Studio

I edited studio.bat file.
I added actual jdk placement to SET JDK= line at the beginning of file:
SET JDK=C:\\\Program Files\\\Java\\\jdk1.8.0_151

You must upgrade to 4.0.1 version!

The same problem happened with me. Actually my C drive wasn't full still I wanted to install android studio in D drive. The problem was resolved when I deleted it and again installed android studio.
Install it in C drive (You don't have to do anything for that. Actually, just click next...next.. next.. while installing and you are done.
)

Zuhair Naqi's solution is good, but in my case I don't have the option to maximize. So I found another method, because in my case the Android Studio (Bumblebee) does not open every time the windows was updated.
Select right click on the android studio icon, and open some recent project.
A new window will open with the recent project correctly.
You close the window that you couldn't see, and from there you can open projects normally.

I was able to solve it by going to control panel and uninstalling android studio, then restarting the computer so that any running instances would close. Next I deleted the folder
C:\Program Files\Android\Android Studio
Re-installed everything, and everything was working fine.