React Native Library for scan Bluetooth using BLE

This project will give you information about available bluetooth devices.

Getting started

Installing it as a library in your main project

npm i rn-ble-scan
	or
yarn add rn-ble-scan

Add permissions for android in AndroidManifest.xml:

```xml
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:required="true" android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:required="true" android:name="android.permission.CHANGE_WIFI_STATE"/>    
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>  
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
```

1. Simply import it by the name defined in your library's package.json:

   import ScanBLE from 'rn-ble-scan'; 

   Example:

   import React, { useEffect, useState } from 'react';
   import { View, Text, StyleSheet, Button, NativeModules } from 'react-native';
   import ScanBLE from 'rn-ble-scan';
   
   const App = () => {
   
       const [uid, setUid] = useState(null);
   
       const persmission = async () => {
           try {
           // permission to access location to set wifi connection
           const granted = await PermissionsAndroid.request(PermissionsAndroid.PERMISSIONS.ACCESS_FINE_LOCATION)
               .then(res => {
               if (res === "granted") {
                   console.log("Permission granted!");
               } else {
                   console.log("Please provide location permission to scan BT devices");
               }
               });
           } catch (err) {
           console.warn(err)
           }
       }
   
       useEffect(() => {
           permission();
           UUIDGenerator.getRandomUUID((newUid) => {
           setUid(newUid);
           });
       }, [setUid, UUIDGenerator,permission])
   
       <!-- start scanning devices -->
       const startScanning = async () => {
           console.log("StartScanning -> uid", uid)
           await samplecall.advertise(uid);
           await samplecall.discover(uid, (value) => {
           console.log("Device", value)
           });
       }
   
       return (
           <View>
           <Text>UUID: {uid}</Text>
           <Button
           title="Scan Bluetooth"
           onPress={startScanning}/>
           </View>
       )
   };
   
   const styles = StyleSheet.create({
       screen: {
           flex: 1,
           justifyContent: 'center',
           alignItems: 'center'
       }
   });
   export default App;