Getting Started guide for windows/android is not working.

[mescalito]

Description

Getting Started guide for windows/android is not working.

I followed the guide exactly step by step many times. I even created a VM container with a fresh installed windows 7 and 10 version, and it didn't work in both cases and neither in my day-by-day windows 7 machine.

You need to fix this guide: https://facebook.github.io/react-native/docs/getting-started.html

Also, the screenshots are out of date for Android Studio.

What I ended up doing was to install Expo XDE and Genymotion and add ADB into my system path config variables.

But I can't use "react-native run-android", I have to command via Expo XDE, what sucks a little bit.

The Android Studio installation is NOT working as described in the Getting Started guide.

ERROR:
Running dex in-process requires build tools 23.0.2.
For faster builds update this project to use the latest build tools.
:app:transformClassesWithDexForDebug FAILED

FAILURE: Build failed with an exception.

• What went wrong:

D:\reactExpo\reactDefault\nico1>react-native run-android
Scanning 557 folders for symlinks in D:\reactExpo\reactDefault\nico1\node_modules (27ms)
Starting JS server...
Building and installing the app on the device (cd android && gradlew.bat installDebug)...
Incremental java compilation is an incubating feature.
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:checkDebugManifest
:app:preReleaseBuild UP-TO-DATE
:app:prepareComAndroidSupportAppcompatV72301Library
:app:prepareComAndroidSupportSupportV42301Library
:app:prepareComFacebookFbuiTextlayoutbuilderTextlayoutbuilder100Library
:app:prepareComFacebookFrescoDrawee101Library
:app:prepareComFacebookFrescoFbcore101Library
:app:prepareComFacebookFrescoFresco101Library
:app:prepareComFacebookFrescoImagepipeline101Library
:app:prepareComFacebookFrescoImagepipelineBase101Library
:app:prepareComFacebookFrescoImagepipelineOkhttp3101Library
:app:prepareComFacebookReactReactNative0440Library
:app:prepareComFacebookSoloaderSoloader010Library
:app:prepareOrgWebkitAndroidJscR174650Library
:app:prepareDebugDependencies
:app:compileDebugAidl
:app:compileDebugRenderscript
:app:generateDebugBuildConfig
:app:mergeDebugShaders
:app:compileDebugShaders
:app:generateDebugAssets
:app:mergeDebugAssets
:app:generateDebugResValues
:app:generateDebugResources
:app:mergeDebugResources
:app:bundleDebugJsAndAssets SKIPPED
:app:processDebugManifest
:app:processDebugResources
:app:generateDebugSources
:app:incrementalDebugJavaCompilationSafeguard
:app:compileDebugJavaWithJavac
:app:compileDebugJavaWithJavac - is not incremental (e.g. outputs have changed, no previous execution, etc.).
:app:compileDebugNdk UP-TO-DATE
:app:compileDebugSources
:app:transformClassesWithDexForDebug
Running dex in-process requires build tools 23.0.2.
For faster builds update this project to use the latest build tools.
:app:transformClassesWithDexForDebug FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:transformClassesWithDexForDebug'.
> com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: java.lang.UnsupportedOperationException

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 39.949 secs
Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/android-setup.html

D:\reactExpo\reactDefault\nico1>

[hramos]

Have you tried following the very latest version of the guide at http://facebook.github.io/react-native/releases/next/docs/getting-started.html ? I've recently gone through all the steps on Windows and did not run into the issue you presented. It sounds like you're having trouble connecting to the Android device.

[mescalito]

@hramos Hi Hector! nice to see you in here, I have many apps running on Parse Server ;)

Yes I did follow the very latest version of the guide and it didn't work. I even created a fresh VM on windows 7 and it didn't work either.

By the way, the screenshots in the windows guide are from iOS, that doesn't make sense as well.

Hector, you should give it a try again on a windows machine, or someone on your team.

[hramos]

I dedicated most of the afternoon today to look into this. After completely uninstalling Android Studio and the Android SDK as well as all AVDs from my machine, I went back through the current instructions, step by step, and I was able to run the starter RN app on Windows on an Android emulator.

I was unable to reproduce the issue brought up here. The logs you posted indicate that you may be missing the 23.0.1 SDK build tools. Can you double-check and make sure you did not miss a single step?

I've updated the instructions to use Windows screenshots when applicable.

[mescalito]

Gracias Hector, I'll make a video

[hramos]

Are you sure you have the 23.0.1 SDK build tools? The error indicates you're missing them. Did you install the JDK as well?

[mescalito]

Yes, many times. Take a look at this image:
http://prntscr.com/f8idfp

[hramos]

That image does not show the 23.0.1 SDK build tools as being installed. That option is under the "SDK Tools" tab.

[mescalito]

Hector, it is also there, check this other image: http://prntscr.com/f8j3vc

[oallouch]

Same here
And "adb devices" shows me my emulator, of course.

[hramos]

Like I said above, I just went through all the steps on a clean machine and had no issues. If anyone can pinpoint if there's a step that is missing, or an assumption that the guide makes about the user's machine, that could help.

[oallouch]

Ok, I found my problem.
I was running it from the conemu terminal and I was getting error messages with black text on a black background.
For me, the issue was a bad JAVA_HOME env var.

Hope that helps.

[Kontra21]

JAVA_HOME env var missing has been causing a lot of issues. As an extra precaution I also put %JAVA_HOME% in my PATH env var as well after creating the appropriate JAVA_HOME var. React worked without issues after adding that. You will also need to restart your CMD or other CLI you are using.