Pass react-native UI Component to Android - Stack Overflow

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For my React Native Android, I have created a Custom Camera Module which uses Camera2 API that I want to use in RN. For the UI part of it, I want to pass it from the react-native side, but how can I pass it to my Android?

I created a separate UI module for this but I think this is a little overkill.

For my React Native Android, I have created a Custom Camera Module which uses Camera2 API that I want to use in RN. For the UI part of it, I want to pass it from the react-native side, but how can I pass it to my Android?

I created a separate UI module for this but I think this is a little overkill.

• android
• react-native
• android-camera2

Share Improve this question Follow asked Nov 22, 2024 at 5:03 meanDevelopermeanDeveloper 1133 bronze badges

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1. Create a React native View Component.

   // It Is CameraOverlay Component 
   import React from 'react';
   import { View, Text, StyleSheet } from 'react-native';
   
   const CameraOverlay = () => {
     return (
       <View style={styles.overlay}>
         <Text style={styles.text}>Camera Overlay</Text>
       </View>
     );
   };
   
   const styles = StyleSheet.create({
     overlay: {
       position: 'absolute',
       top: 0,
       left: 0,
       right: 0,
       bottom: 0,
       justifyContent: 'center',
       alignItems: 'center',
       backgroundColor: 'rgba(0, 0, 0, 0.5)',
     },
     text: {
      color: 'white',
      fontSize: 20,
     },
   });
   export default CameraOverlay; 
   

2. Need to setup and create Native Module File.

   // CustomCameraModule.java
   import android.content.Context;
   import android.view.View;
   import com.facebook.react.ReactApplication;
   import com.facebook.react.ReactInstanceManager;
   import com.facebook.react.ReactNativeHost;
   import com.facebook.react.ReactRootView;
   import com.facebook.react.bridge.ReactContext;
   import com.facebook.react.bridge.ReactContextBaseJavaModule;
   import com.facebook.react.bridge.ReactMethod;
   import com.facebook.react.uimanager.ThemedReactContext;
   
   public class CustomCameraModule extends ReactContextBaseJavaModule {
     private final ReactApplication reactApplication;
   
     public CustomCameraModule(ReactApplication reactApplication) {
        super(reactApplication.getApplicationContext());
        this.reactApplication = reactApplication;
     }
   
     @Override
     public String getName() {
        return "CustomCameraModule";
     }
   
     @ReactMethod
     public void showCameraOverlay() {
        // Create a new ReactRootView
        ReactRootView reactRootView = new ReactRootView(getCurrentActivity());
        reactRootView.startReactApplication(
            ((ReactNativeHost) reactApplication).getReactInstanceManager(),
            "CameraOverlay", //React Native component
            null // Initial properties
        );
   
        // Add the ReactRootView to your camera layout
        // Assuming you have a layout to which you want to add this view
        View cameraLayout = getCurrentActivity().findViewById(R.id.camera_layout);
        cameraLayout.addView(reactRootView);
     }
   }
   

3. The created model should be registered to the mainapplication.java.

   import com.yourpackage.CustomCameraModule; // Import your module
   
    @Override
    protected List<ReactPackage> getPackages() {
      return Arrays.<ReactPackage>asList(
        new MainReactPackage(),
        new CustomCameraPackage() // Register your custom package
      );
    } 
   

4. It's time to use the native module when you've finished the three stages.

   import { NativeModules } from 'react-native';
   
   const { CustomCameraModule } = NativeModules;
   
   // Call the method to show the camera overlay
   CustomCameraModule.showCameraOverlay();
   

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