I cannot resolve the issue. When application loads react native throw warnings.
new NativeEventEmitter() was called with a non-null argument without the required addListener method.
WARN new NativeEventEmitter() was called with a non-null argument without the required removeListeners method.
This is likely due to the newest version of react-native. A lot of libraries still haven't released a new version to handle these warnings (or errors in some case). Examples include https://github.com/react-navigation/react-navigation/issues/9882 and https://github.com/APSL/react-native-keyboard-aware-scroll-view/pull/501. If it bothers you, you can hide the warning for now (source):
import { LogBox } from 'react-native';
LogBox.ignoreLogs(['new NativeEventEmitter']); // Ignore log notification by message
LogBox.ignoreAllLogs(); //Ignore all log notifications
I just add two function to main java module:
// Required for rn built in EventEmitter Calls.
@ReactMethod
public void addListener(String eventName) {
}
@ReactMethod
public void removeListeners(Integer count) {
}
Example: for fix warning in react-native-fs add functions to android/src/main/java/com/rnfs/RNFSManager.java file.
For Kotlin use this code:
@ReactMethod
fun addListener(type: String?) {
// Keep: Required for RN built in Event Emitter Calls.
}
@ReactMethod
fun removeListeners(type: String?) {
// Keep: Required for RN built in Event Emitter Calls.
}
same error.
change
const eventEmitter = new NativeEventEmitter(NativeModules.CustomModule);
to
const eventEmitter = new NativeEventEmitter();
works