How can I create custom modules in React Native?

How can I create custom modules in React Native?

To create custom modules in React Native, you need to write native code for iOS and Android. Would you like a step-by-step guide?

Yes, please provide the steps for both iOS and Android.

For iOS, create a new Objective-C or Swift file, implement your module, and expose it to React Native. For Android, create a new Java class, implement your module, and register it in the package. Do you need code examples?

Yes, code examples would be great!

Sure! For iOS, here's a simple example:

#import <React/RCTBridgeModule.h>

@interface MyModule : NSObject <RCTBridgeModule>
@end

@implementation MyModule
RCT_EXPORT_MODULE();

RCT_EXPORT_METHOD(myMethod:(NSString *)param) {
  // Your code here
}
@end

And for Android:

package com.mymodule;

import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;

public class MyModule extends ReactContextBaseJavaModule {
  public MyModule(ReactApplicationContext reactContext) {
    super(reactContext);
  }

  @Override
  public String getName() {
    return "MyModule";
  }

  @ReactMethod
  public void myMethod(String param) {
    // Your code here
  }
}