react-native run-android

[mhdbnz]

hi i have problem when use react-native run-android:

JS server already running. Building and installing the app on the device (cd android && gradlew.bat installDebug)… Support for running Gradle using Java 7 has been deprecated and is scheduled to be removed in Gradle 5.0. Please see https://docs.gradle.org/4.4/userguide/java_plugin.html#sec:java_cross_compilation for more details.

FAILURE: Build failed with an exception.

• Where: Build file ‘E:\mehdi\react-native-project\test\android\app\build.gradle’ line: 1

• What went wrong: A problem occurred evaluating project ‘:app’.

  java.lang.UnsupportedClassVersionError: com/android/build/gradle/AppPlugin : Unsupported major.minor version 52.0

• Try: Run with –stacktrace option to get the stack trace. Run with –info or –debug option to get more log output. Run with –scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 1s 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/getting-started.html

E:\mehdi\react-native-project\test> what should i do?

[ashokkumar88]

It seems mismatched react native version. Delete the app from the device/emulator and run again.