Error connecting Android sdk to Unity.

I am trying to learn AR and vuforia. As I have learned on a course online, i have followed following steps,

1. Download sdk and jdk
2. specify path in Edit>Preferences>External Tools
3. go to build setting and click build

I am facing following errors.

1)
Error:Invalid command android

UnityEditor.HostView:OnGUI()

2)
CommandInvokationFailure: Unable to list target platforms. Please make sure the android sdk path is correct. See the Console for more details.
C:/Program Files/Android/Android Studio1/jre\bin\java.exe -Xmx2048M -Dcom.android.sdkmanager.toolsdir="C:/Users/Tirth/AppData/Local/Android/sdk\tools" -Dfile.encoding=UTF8 -jar "C:\Program Files\Unity\Editor\Data\PlaybackEngines\AndroidPlayer/Tools\sdktools.jar" -

stderr[
Error:Invalid command android
]
stdout[

]
exit code: 64
UnityEditor.Android.Command.Run (System.Diagnostics.ProcessStartInfo psi, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommandInternal (System.String javaExe, System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 memoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommandSafe (System.String javaExe, System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 memoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.HostView:OnGUI()

3)

Error building Player: CommandInvokationFailure: Unable to list target platforms. Please make sure the android sdk path is correct. See the Console for more details.
C:/Program Files/Android/Android Studio1/jre\bin\java.exe -Xmx2048M -Dcom.android.sdkmanager.toolsdir="C:/Users/Tirth/AppData/Local/Android/sdk\tools" -Dfile.encoding=UTF8 -jar "C:\Program Files\Unity\Editor\Data\PlaybackEngines\AndroidPlayer/Tools\sdktools.jar" -

stderr[
Error:Invalid command android
]
stdout[

]
exit code: 64

4)

UnityEditor.BuildPlayerWindow+BuildMethodException: Build failed with errors.
at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (BuildPlayerOptions options) [0x001b9] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:162
at UnityEditor.BuildPlayerWindow.CallBuildMethods (Boolean askForBuildLocation, BuildOptions defaultBuildOptions) [0x00050] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:83
UnityEditor.HostView:OnGUI()

Can anyone please help on where did I go wrong?

 

I had a similar issue recently I fixed it by getting an older version of a couple of them. I have it working just fine now and here are the versions I'm using.

You can check the versions you have in the SDK files themselves.

To check the JDK version open the release file in a text editor
To check NDK version open the source.properties file in a text editor
To

JDK: Java SE 8u144
NDK: 13.1.3345770

Not sure if this was what fixed it or not as I tried a bunch of stuff I found online to fix it.

 

I feel like JDK SE 9 was the problem for me I don't remember though.

 

It just shows error: Please check SDK path and for details check the console. I have mentioned console error above.

 

Those were the same issues I was having as well.

 

Tirth which versions of Vuforia and Unity are you using, and did you install Android Build Support from the download assistant or are you using an existing Android build environment?

 

Unity 2017.1.2f1
Vuforia SDK v6.2.10
I have tried both downloading fresh new support after uninstalling and using existing environment.

Both show the same error.

 

Hi Tirth_,
2017.1 is not a supported version of Vuforia 6.2.10. If you plan on using 6.2.10, please download Unity 5.6. Going forward, we recommend going with Unity 2017.2 with the native version of Vuforia (6.5).
Thanks!

 

I'll try upgrading both unity and vuforia and will let you know if it works.

 

Same problem again. With versions I was asked to install and run.

 

Do you have the latest Android SDKs installed? Which version are you targeting in your app?

 

yes, I have lastest SDK installed. Targetting 7.0 Nougat

 

Which version of the JDK do you have installed? Are you using the Android NDK?

 

JDK: 8.0.1410 and no I haven't installed NDK. The error shows please provide correct path for SDK so I didn't bother about NDK much.

 

Do you only see this issue when you are building with Vuforia included? Or do you see this issue when you try to build to Android regardless of Vuforia inclusion?

 

let me give it a try with a normal game , excluding vuforia

 

Ya! So facing the same problem while building for android. Hence , now I will try reinstalling applications and try installing and running older versions and let you guys know if it works.

 

Chiming in on this one. Experiencing the same problems with
Unity 2017.2.0b11
Android Studio 2.2.3 with all necessary packages (building an example app to phone works like a charm)
JDK 9 and 7. Same error on both.
Tested both with my project and the sample cores.
I've also tested with the SDK installed on two diferent locations to be sure Unity can access the folder.
If a reinstall is needed this will be the 3rd time in less than a month. Not really wanting to do that.
Excited to see if you find a solution, Tirth_!

 

Did you two download the SDKs through Unity's External Tools menu?

 

I have the same error. I never had this problem with an older version of Unity and an older version of well, everything.

I guess that is what happens when we try to fix something that isn't broken.

 

I downloaded Unity 2017.2, selected to install everything from the Unity installer. There was no Android SDK, so I downloaded Android studio 2.3.3, and used the download manager to install the SDK, and then downloaded JDK 9.0.1

Doesn't work. Perhaps they'll fix everything so it will work with the most up to date SDK's soon.

 

yes

 

I found a way to make it work.
Apparently it is a problem with unity they are working to fix together with google. Java 9 is messing things up and need to be completely removed. Java 8 is the one to stick with.
Uninstall all other Java installs and it should work fine.
Tested today with Unity 2017.2.0f3

https://forum.unity.com/threads/java-9-jdk-9-support-by-unity-android.499354/#post-3258536

 

Great that you found the solution, but I would still give it a try with older versions to make sure that I am doing it right.

 

I'm fairly certain android SDK is the culprit.
I tried downgrading the JDK to 8, and it doesn't do anything different.

 

If anyone else comes up with this problem, the new SDK Manager would not allow me to download anything. So I uninstalled it, and retrieved an older version of the SDK from my other computer. Version 23.
It now always tells me I don't have the most up to date version, I click proceed anyways, and it works. Hope this helps someone.