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Questions tagged [react-native-native-module]

137 questions
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Native Modules Bridges React Native

I have an issue when i try to bridge an Native Modules. I have a function in Java , the function will calculate the progress when i write a byte , i have a while loop at there. The problem is whenever i return the value inside of loop , the loop is…
code iam07
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Can I access data stored in React Native's async storage from native modules of ios

Generally we created custom keyboard like https://developer.apple.com/documentation/uikit/keyboards_and_input/creating_a_custom_keyboard and we need to store data in async storage and fetch also. its works in android perfectly after adding…
Jaydip Sharma
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Reduce time for calling native module methods in react-native application

I implemented a native module which navigates to a camera activity. But while calling the camera from nativeModules, it takes 1500-2000ms to open(excluding ui updation in camera). The native module class that extends ReactContextBaseJavaModule is…
suvodipMondal
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How to use 3rd party library in react native expo

Im total noob in RN and Expo. I'v generated new project expo init test, then cd test, then npm install --save react-native-ble-plx and started expo by npm start. In my code I added following lines: import { BleManager } from…
Andrei V
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My custom native module is not present inside NativeModules object

So, i wanted to create a native module which will detect, if the app is running on emulator/simulator or an actual device. Everything works fine on android, but i'm facing issue on iOS. I have create a AbcModule.h and a AbcModule.m file #import…
Manoj Yadav
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Making React Native iOS Native Module to use Garmin SDK

So I'am trying to implement the Garmin iOS SDK in a native module to connect a Garmin watch to my react native app. I have done all what the docs say for creating a native module and I'am able to initialize and start scanning (this does not throw…
Francisco Giancarelli
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Can not add Android Native Module to React Native project

I have a task where I need to add a Native functionality to the React Native project for Android devices. I have followed this [tutorial][1], which is pretty straight-forward. But unfortunately, I still can not access my Native functionality from JS…
Eugene Alexeev
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React native RecordScreen Native Module is null

I want to use RecordScreen NativeModule in my react native app. import {NativeModules} from 'react-native' console.log(NativeModules) // This is empty {} console.log(NativeModules.RecordScreen) // This is null Currently I'm testing on android…
John Stuart
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Display red screen error in react native from a native module

I implemented a native module and I would like to display an error for a developer using the redbox error screen from the native module. This error will inform about obsolete values. Does anyone know, how to display this kind of screen with a custom…
Piotr Badura
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How to show progress bar in react native for a long running android native task?

I have a react native app and I'm using an android native module to run a long task. While this task is going on, I would like to show a progress bar in my react native screen while this task is going on. How do i do this? I'm currently only able to…
Jeff P Chacko
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React-native Native Modules Official Guide not working

I've tried following this guide 10 times today: https://reactnative.dev/docs/native-modules-android I just tried on a clean project following the guidelines exactly. No matter what I do I always get null is not an object (evaluating…
UnknownFrequency
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Create own dependency in react native for iOS

I'm creating first react-native dependency for both android and iOS. I have done coding part for android but now I'm stuck in iOS. Where to write code for my library and how to test.
user7537695
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At what point are Native Modules compiled in a React Native app (with Expo)?

Are the underlying Native Modules compiled when they are installed from NPM, or are they compiled when the App is run (i.e. bundled)? I don't think it's likely that they are compiled when they are installed from NPM as that would require you to have…
Fearnbuster
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Objective C - Call Method defined from a Macro

I'm trying to call a Method from Objective-C that has been defined using a Macro which wraps a Swift function. I'm getting the compilation error No visible @interface for 'NearbyMessages' declares the selector '__rct_export__disconnect' in Xcode…
mrousavy
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React Native Module, Cocoapod file not found

I am building a module for React Native, as a part of this, there is some native iOS code that is wrapped in a cocoapod. I have this working fine, and I can install the cocoapod and see the native classes from the RN side no problem. One of the…
David Karasek
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