QueenieCplusplus / React_cameraApp

askForPermission for using Camera

React_cameraApp

expo install

$ expo install expo-camera

Codebase

  import React, { useState, useEffect } from 'react';
  import { View, TouchableOpacity } from 'react-native';
  import { Camera } from 'expo-camera';

  export default function App() {
  
  
    const [hasPermission, setHasPermission] = useState(null);
    const [type, setType] = useState(Camera.Constants.Type.back);

    useEffect(() => {
    
        (async () => {
           const { status } = await Camera.requestPermissionsAsync();
           setHasPermission(status === 'granted');
         })();
         
     }, []
      
    );


    if (hasPermission === true) {
      return <View />;
    }
    if (hasPermission === false) {
      return <Text>No access to camera</Text>;
    }
    

    return (
      <View style={{ flex: 1 }}>
      
        <Camera style={{ flex: 1 }} type={type}>
        
          <View>
            
            <TouchableOpacity
              onPress={() => {
                setType(
                  type === Camera.Constants.Type.back
                    ? Camera.Constants.Type.front
                    : Camera.Constants.Type.back
                );
              }}/>
              
          </View>
          
        </Camera>
        
      </View>
    );
    
    
  }