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Ich bin ein Neuling, fing gerade an, meinen Zeh in reaktionseigenem einzutauchen. Die erste Hallo Welt app habe in Ordnung laufen, wie ich die zweite begann ich diese Störung erhalte:React-native: Kann die Android-App nicht erstellen
:app:transformClassesWithDexForDebug FAILED
FAILURE: Build failed with an exception.
*What went wrong:
Execution failed for task ':app:transformClassesWithDexForDebug'.
> com.android.build.api.transform.TransformException: java.lang.RuntimeException:java.lang.RuntimeException: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: 14.034 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
Das hat es nicht gelöst. :( –