Make sure you have an Android emulator running or a device connected and have

Question

I tried to run the react-native run-android through my React Project. After that, I got an error like the following.

  Starting JS server... Building and installing the app on the device (cd android && gradlew.bat installDebug...  FAILURE: Build failed with an exception.  * What went wrong: A problem occurred configuring project ':app'. > Could not resolve all dependencies for configuration ':app:_debugCompile'.    > Could not find com.android.support:appcompat-v7:23.0.1.      Searched in the following locations:          file:/C:/Users/DELL/.m2/repository/com/android/support/appcompat-v7/23.0.1/appcompat-v7-23.0.1.pom          file:/C:/Users/DELL/.m2/repository/com/android/support/appcompat-v7/23.0.1/appcompat-v7-23.0.1.jar          https://jcenter.bintray.com/com/android/support/appcompat-v7/23.0.1/appcompat-v7-23.0.1.pom          https://jcenter.bintray.com/com/android/support/appcompat-v7/23.0.1/appcompat-v7-23.0.1.jar          file:/F:/Android/react/AwesomeProject/node_modules/react-native/android/com/android/support/appcompat-v7/23.0.1/appcompat-v7-23.0.1.pom          file:/F:/Android/react/AwesomeProject/node_modules/react-native/android/com/android/support/appcompat-v7/23.0.1/appcompat-v7-23.0.1.jar      Required by:          AwesomeProject:app:unspecified          AwesomeProject:app:unspecified > com.facebook.react:react-native:0.27.2    > Could not find com.android.support:recyclerview-v7:23.0.1.      Searched in the following locations:          file:/C:/Users/DELL/.m2/repository/com/android/support/recyclerview-v7/23.0.1/recyclerview-v7-23.0.1.pom          file:/C:/Users/DELL/.m2/repository/com/android/support/recyclerview-v7/23.0.1/recyclerview-v7-23.0.1.jar          https://jcenter.bintray.com/com/android/support/recyclerview-v7/23.0.1/recyclerview-v7-23.0.1.pom          https://jcenter.bintray.com/com/android/support/recyclerview-v7/23.0.1/recyclerview-v7-23.0.1.jar          file:/F:/Android/react/AwesomeProject/node_modules/react-native/android/com/android/support/recyclerview-v7/23.0.1/recyclerview-v7-23.0.1.pom          file:/F:/Android/react/AwesomeProject/node_modules/react-native/android/com/android/support/recyclerview-v7/23.0.1/recyclerview-v7-23.0.1.jar      Required by:          AwesomeProject:app:unspecified > com.facebook.react:react-native:0.27.2    > Could not find com.android.support:support-v4:23.1.1.      Searched in the following locations:          file:/C:/Users/DELL/.m2/repository/com/android/support/support-v4/23.1.1/support-v4-23.1.1.pom          file:/C:/Users/DELL/.m2/repository/com/android/support/support-v4/23.1.1/support-v4-23.1.1.jar          https://jcenter.bintray.com/com/android/support/support-v4/23.1.1/support-v4-23.1.1.pom          https://jcenter.bintray.com/com/android/support/support-v4/23.1.1/support-v4-23.1.1.jar          file:/F:/Android/react/AwesomeProject/node_modules/react-native/android/com/android/support/support-v4/23.1.1/support-v4-23.1.1.pom          file:/F:/Android/react/AwesomeProject/node_modules/react-native/android/com/android/support/support-v4/23.1.1/support-v4-23.1.1.jar      Required by:          AwesomeProject:app:unspecified > com.facebook.react:react-native:0.27.2 > com.facebook.fresco:fresco:0.10.0 > com.facebook.fresco:drawee:0.10.0          AwesomeProject:app:unspecified > com.facebook.react:react-native:0.27.2 > com.facebook.fresco:fresco:0.10.0 > com.facebook.fresco:imagepipeline:0.10.0          AwesomeProject:app:unspecified > com.facebook.react:react-native:0.27.2 > com.facebook.fresco:fresco:0.10.0 > com.facebook.fresco:imagepipeline:0.10.0 > com.facebook.fresco:imagepipeline-base:0.10.0  * 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: 17.502 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 

I installed Android SDK and set Android Home and Path Environmental Variable successfully. But I am still getting the same error.

I also installed Gennymotion on my pc for creating virtual android device.

Answer 1

You might check the permissions on Android/Gradlew They should be 755 not 644.

Run chmod 755 android/gradlew inside your app root folder.

Then run react-native run-android.

And it should work again.