运行react-native run-android时，在MainActivity.java上出错

Question

I'm running react-native run-android and I'm getting this error when compiling.

:app:compileDebugJavaWithJavac - is not incremental (eg outputs have changed, no previous execution, etc.)

MainActivity.java:37: error: method does not override or implement a method from a supertype @Override ^ 1 error :app:compileDebugJavaWithJavac FAILED

FAILURE: Build failed with an exception.

I really don't know how to proceed so any suggestion is really welcome.

I have installed:

• javac 1.8.0_101
• react-native-cli: 1.0.0
• react-native: 0.32.0

EDIT

This is the MainActivity.java

public class MainActivity extends ReactActivity {

    /**
     * Returns the name of the main component registered from JavaScript.
     * This is used to schedule rendering of the component.
     */
    @Override
    protected String getMainComponentName() {
        return "netbeast";
    }

    /**
     * Returns whether dev mode should be enabled.
     * This enables e.g. the dev menu.
     */
    @Override
    protected boolean getUseDeveloperSupport() {
        return BuildConfig.DEBUG;
    }

    /**
     * A list of packages used by the app. If the app uses additional views
     * or modules besides the default ones, add more packages here.
     */
    @Override  **//This is the line 37 where the error occurs**
    protected List<ReactPackage> getPackages() {
        return Arrays.<ReactPackage>asList(
            new MainReactPackage(),
            new VectorIconsPackage(),
            new UdpSocketsModule(),
            new RNNetworkInfoPackage()
        );
    }
}

Answer 1

尝试运行react-native upgrade，这将更新mainActivity.java。